Page 1 Control Icons HONEYWELL EXCEL 5000 OPEN SYSTEM USER GUIDE 74-5577-33 (US) EN2B-0184 GE51 R0518 (Europe)
Page 2 V. 10.08.01 USER GUIDE Software License Advisory This document supports software that is proprietary to Honeywell Inc. and/or to third party software vendors. Before software delivery, the end user must execute a software license agreement that governs software use. Software...
Page 3: Table Of Contents
EXCEL CARE CONTROL ICONS CONTENTS INTRODUCTION ..................................Applicable Literature ................................10 Control Icon Operation ................................11 Control Icon Table ....................Control Icon Table (Excel Web / Excel Web II) ............ Datapoints ......................ALPHABETIC REFERENCE ..............................21 Absolute (Excel Web / Excel Web II) ..............Addition / ADD .....................
Page 4 CONTENTS EXCEL CARE CONTROL ICONS J-K Flip Flop (Excel Web / Excel Web II) ............. 123 Last Value (Excel Web / Excel Web II) ..............124 Linear Converter (Excel Web II) ................124 Limit (Excel Web / Excel Web II) ................125 Ln (Excel Web / Excel Web II) ................
Page 5 EXCEL CARE CONTROL ICONS CONTENTS XOR Table (Excel Web / Excel Web II) ............... 237 Zero Energy Band / ZEB ..................238 Examples ....................................244 Attenuator ......................246 Average Value Calculation .................. 247 Floating Limits and Alarm Suppression ............... 251 Operating Pump Switchover ................
Page 7: Introduction
EXCEL CARE CONTROL ICONS INTRODUCTION Purpose This manual provides descriptions and application examples for control icons in Excel Computer Aided Regulation Engineering (CARE) software. You use control icons in the CARE Control Strategy function. The control strategy for a plant consists of control loops that monitor the environment and adjust equipment operation to maintain comfort levels.
Page 8: Applicable Literature
INTRODUCTION EXCEL CARE CONTROL ICONS APPLICABLE LITERATURE Form No. Title 74-5587 (US) Excel CARE User Guide EN2B-0182 (Europe) Detailed description of Excel CARE software 74-3556 (US) Excel Live CARE User Guide EN2B-0183 (Europe) Instructions for using Live CARE software to access controller files on-line and simulate operation EN2B-162 RACL Editor User Guide...
Page 9: Control Icon Operation
EXCEL CARE CONTROL ICONS INTRODUCTION CONTROL ICON OPERATION Each control icon has an I/O dialog box that defines its input(s) and output(s). In addition, some control icons have an internal parameters dialog box that defines parameter values that govern the function of the control icon. Internal Parameters Dialog Box When you first place a control icon in the Control Strategy work space, the internal parameters dialog box, if any, displays.
Page 10: Control Icon Table
INTRODUCTION EXCEL CARE CONTROL ICONS The two blank rectangles in the dialog box are editing fields where you can enter values instead of point or icon connections. For example, in the PID dialog box, you can type an engineering unit table ID and value for the W variable, instead of connecting W to a point or control icon.
Page 11 EXCEL CARE CONTROL ICONS INTRODUCTION Function Name Control Icon Icon Name Description Heating Curve with Use a heating curve to calculate discharge Adaptation air temperature setpoint from the room temperature setpoint and outdoor air temperature. Humidity and Enthalpy Calculate enthalpy and absolute humidity. Mathematical Editor Mathematical editor to modify inputs to other control icons.
Page 12: Control Icon Table (Excel Web / Excel Web Ii)
INTRODUCTION EXCEL CARE CONTROL ICONS Control Icon Table (Excel Web / Excel Web II) This chapter lists icons alphabetically by function name and includes function names, the previous function name, in which folder it can be found, and short descriptions. Function name is usually the same as the icon name. Function Name Previous Function name Folder...
Page 13 EXCEL CARE CONTROL ICONS INTRODUCTION Function Name Previous Function name Folder Description Differential Controller Calculates the derivative output signal, which changes in proportion to changes of the input signal. Y = 0 if the input is unchanged since the last cycle. Y > 0 if the deviation is increasing.
Page 14 INTRODUCTION EXCEL CARE CONTROL ICONS Function Name Previous Function name Folder Description Misc Copies the input to all outputs. Integral Controller Calculate the integral (sum) of the input signal. J-K flip-flop (Excel Web II with OS Misc Toggles an output depending to the set, clear 3.01.00 or higher only) command and clock conditions Last Value...
Page 15 EXCEL CARE CONTROL ICONS INTRODUCTION Function Name Previous Function name Folder Description Odd Parity Logic Compares binary values and returns TRUE (1), if the number of TRUE (1) elements are odd. On-Board DI Misc Read on-board digital input. On-Board DO Misc Write on-board digital output.
Page 16 INTRODUCTION EXCEL CARE CONTROL ICONS Function Name Previous Function name Folder Description Sinus Arithmetic Calculate the sinus function of X in rad. Split Misc Splits the input into multiple outputs. Result for a split into 3 outputs: Y3 = (((X-Y1) / P1) - Y2) / P2) modulo P3.
Page 17: Datapoints
EXCEL CARE CONTROL ICONS INTRODUCTION Datapoints Datapoints Datapoints are a technique of transferring information between XFMs when there are not enough of the regular inputs and outputs. Datapoints are pseudopoints that can be written to or read by other XFMs. Create datapoint points by clicking on the Datapoint button after the XFM has been displayed.
Page 18 INTRODUCTION EXCEL CARE CONTROL ICONS For detailed information see XFMs section in the CONTROL STRATEGY chapter of the CARE USER GUIDE. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)
Page 19: Alphabetic Reference
EXCEL CARE CONROL ICONS ALPHABETIC REFERENCE Chapter Contents This chapter describes each control icon as follows: Function Statement of control icon purpose. Formula Formula related to icon, if any. I/O Dialog Box Reproduction of the I/O dialog box that displays in the control strategy work space for selection of control icon inputs and outputs.
Page 20: Absolute (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Absolute (Excel Web / Excel Web II) Function Returns the absolute value and the algebraic sign of an analog value. I/O Dialog Box Input One analog input. Output One analog output (Abs = Absolute value of input) One digital output (Sign = sign (TRUE(1) if input is negative).
Page 21: Adh2 (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Internal Parameters None. Example See the Examples chapter for a description of how to use the ADD icon in a floating limits and alarm suppression application. Also see the Data Transfer (IDT) section for examples that show how to use ADD with IDT.
Page 22: Analog Switch / Swi
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Analog Switch / SWI Function Switch an analog value depending on a digital value. For example: If XD1 = 1, set output Y to X2. If XD1 = 0, set output Y to X3. Formula Y = X2, if XD1 = 1.
Page 23: And (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE AND (Excel Web / Excel Web II) Function AND output becomes TRUE(1) if all inputs are TRUE(1). NAND output is the inverted AND output. I/O Dialog Box Inputs Two through thirty two digital inputs (1 through 32). Output Two digital outputs.
Page 24: Arcus Tangens (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Arcus Tangens (Excel Web / Excel Web II) Function Calculates the arcus tangens function of X. Output value will be returned in radian. I/O Dialog Box ∞ ∞. Input One analog input. Range: – π...
Page 25: Cascade / Cas
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Cascade / CAS Function Provide both a master Proportional-Integral (PI) controller and a secondary PI controller to handle difficult control sections. The master PI manages the setpoint for the secondary (cascade) PI. The secondary PI provides the setpoint reset schedule which, because of the PI function, can be nonlinear.
Page 26 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Master controller Proportional band Xp Number type: decimal, Unit: same as the controlled variable (X) Default: 2.0, Range: 0 through 100.0 Proportional band value is equivalent to the throttling range. Integral action time Tn Number type: whole number, Unit: seconds Default 1000 sec, Range: 0 through 7200 sec If Integral action time is less than 15 seconds, integral control is disabled.
Page 27 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The next diagram illustrates the use of a Cascade controller to perform the same functions. The CAS controller contains two PI controllers in a “cascade” arrangement. The X variable reads the master-controlled variable (room temperature).
Page 28 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Min output = 68F (20C) Max output = 95F (35C) W = 65F (18C) X = ROOM_TEMP Parameters for the cascade controller are: Min output = 0 percent Max output = 100 percent XH = discharge temperature Equipment diagram: Cascade operation: Direct vs Reverse Acting...
Page 29: Cascade Plus / Cas
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Cascade Plus / CAS Function Cascade controller that acts as a PI controller with a master and cascade controller. Cascade Differences This cascade controller (CAS Plus) acts just like the previous cascade controller except that it has an integral action enable/disable input. This new function requires an additional digital input (XD) and two new parameter registers for temporary storage.
Page 30 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Internal Parameters Master controller Proportional band Xp Number type: decimal, Unit: same as controlled variable (X) Default: 2.0, Range: 0 through 100.0 Proportional band value is equivalent to the throttling range. Integral action time Tn Number type: whole number, Unit: seconds Default 1000 sec, Range: 0 through 7200 sec If Integral action time is less than 15 seconds, integral control is disabled.
Page 31 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE P4 Tn (in seconds, integral action time of the master controller) P5* Min (minimum limit of the cascade controller) P6* Max (maximum limit of the cascade controller) P7 Xp (proportional band of the cascade controller) P8 Tn (in seconds, integral action time of the cascade controller) P9 Min (minimum limit of the positioning signal, in percent) P10 Max (maximum limit of the positioning signal, in percent)
Page 32: Changeover Switch / Cha
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS XH is the supply air temperature (auxiliary controled variable) W is the room temperature setpoint ( reference variable). The switching table sets the digital software point Enable_I_comp according to the following rules: • Enable the I component 15 minutes after the negative transition of user address STARTUP.
Page 33: Compare 2 (Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE CHA Example Control operating hours for two continually controller pumps. You can alternate between two pumps as the following diagram shows: The application programs for speed control and pump switching are control loops with one or more switching tables. Compare 2 (Excel Web II) Prerequisite Controller OS 3.01.00 or higher...
Page 34: Cosinus (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Formula A>B >TRUE(1) if A > B A=B >TRUE(1) if A = B ATRUE(1) if A < B I/O Dialog Box Input Two analog inputs (A and B) Output Three digital outputs where: A>B >TRUE(1) if A >...

Page 35 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Outputs One output (Y) counter value. Number of input X value changes since the last Reset. Internal Parameters None 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 36: Cycle / Cyc
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Cycle / CYC Function Puts out a digital value (0 or 1) on a cyclic basis. I/O Dialog Box Excel Web / Excel Web II Input One digital input (XD, Excel Web / Excel Web II: X), required. Output One digital output (YD, Excel Web / Excel Web II: Y).

Page 37 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Descriptions P3 On time (seconds) P4 Off time (seconds) CYC Operation On time establishes the duration of the high level while Off time establishes the duration of the low level. Software sends the sequence to Output Y as long as a signal greater than or equal to 1 is present in Input X.

Page 38 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Cycle Trend Example In many cases, trend logs include points whose values change frequently. Over a lengthy time interval, these frequent variations in signal exhaust the capacity of the trend buffer. See the Examples chapter for details on the use of the CYC icon in controlling output to the trend log (Trend Buffer Control example).

Page 39: Data Transfer / Idt
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Data Transfer / IDT Function Transfer a value from one control icon to other icons or points. Copies the input to all outputs. I/O Dialog Box Excel Web / Excel Web II Input One input, required. Any input point type or control icon can be an input. Output One to five outputs (Excel Web / Excel Web II: one to 32 outputs), one required.

Page 40 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS IDT Example 1 In applications with multiple pumps, you can use IDT to determine the number of currently running pumps. You cannot use the MAT editor or the ADD icon since they do not process digital points. The following diagram shows how to connect the digital points for the pump relays to IDT icons.

Page 41 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE IDT Example 2 In Example 1, there may be an additional requirement to send the ADD output signal not only to one analog point, but also to several analog and digital points. The digital pseudopoints should show if at least one pump is running.

Page 42: Decimal Places (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Decimal Places (Excel Web / Excel Web II) Function Returns the value of the decimal places part of the input value (X=3.175 becomes Y=0.175) I/O Dialog Box Input One analog input (X). Output One analog output (Y). Internal Parameters None.

Page 43: Dewpoint (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Dewpoint (Excel Web / Excel Web II) Function Calculates the dewpoint temperature from the absolute humidity. I/O Dialog Box Inputs two analog inputs HAbs: absolute humidity PAir: air pressure Outputs One output TDew: dewpoint temperature Internal Parameter None 74-5577–33 (US)

Page 44: Differential (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Differential (Excel Web / Excel Web II) Function Calculates the derivative output signal, which changes in proportion to changes of the input signal. Y = 0 if the input is unchanged since the last cycle. Y > 0 if the deviation is increasing.

Page 45 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Internal Parameters Hysteresis. To add a hysteresis value to the control icon, you must enter it when you define the 2PT control icon. If you leave it at 0.0, there is no on-line function later that you can use to enter a hysteresis value.

Page 46 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Y1 = 1 if X ≥ W, Y1 = 0 if X < W − hysteresis Formulas (Excel Web / Excel Web II) W - hysteresis hysteresis Y2 = 1 if X <= W, Y2 = 0 if X > W + hysteresis W + hysteresis hysteresis 2PT Example...

Page 47 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE An additional condition is that the common flow temperature of the heat generators is larger than the setpoint plus an increase. This condition is necessary to compensate for piping losses and to prevent the service water storage tank from cooling down because of an excessively low flow temperature, instead of being charged (summer case).

Page 48: Division (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Division (Excel Web / Excel Web II) Function Divides input A by input B. I/O Dialog Box Input Two analog inputs. Output One analog output (A divided by B). Internal Parameters None. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 49: Duty Cycle / Duc
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Duty Cycle / DUC Function Switch HVAC systems on and off at variable intervals to save energy while maintaining room conditions. For example, during normal occupancy, the DUC command switches the building's air conditioning and ventilating systems off at variable intervals, provided that required room conditions exist.

Page 50 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The highest zone temperature indicates a need for cooling. For example, X1 (TMax) can be a selection of the maximum of all room temperatures in a zone (MAX icon). X2 (Excel Web / Excel Web II: TMin) = Lowest zone temperature The lowest zone temperature indicates a need for heating.

Page 51 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Maximum off time Number type: Decimal, Unit: percent Default: 50.0 percent, Range: 25 through 80.0 percent Select a Maximum off time for the output (YD1 or YD2, for example, a supply fan) that guarantees an adequate air change (minimum outdoor air rate per person). This value refers to cycle duration.

Page 52 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Off Time Calculation DUC calculates off time by comparing zone temperatures X1 and X2 with the comfort range (P3). DUC calculates the comfort limits around the setpoint (X4) with the following formulas: Upper comfort limit = X4 + P3 (setpoint plus comfort range) Lower comfort limit = X4 - P3 (setpoint minus comfort range)

Page 53 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE When zone temperature is within the comfort zone limits, DUC continuously calculates off time. Off time is inversely proportional to the deviation of a zone temperature from the setpoint. Off time reaches its maximum (P4) when zone temperature is equal to the setpoint, that is, X1 = X2 = X4.

Page 54 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The following diagram illustrates off-time calculation for heating systems: Cooling System Off Time Calculation In cooling-only systems, DUC calculates off time exclusively on highest zone temperature (X1) because cooling is only required at the high end of the temperature range.

Page 55 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The following diagram illustrates off-time calculation for cooling systems: Heating/Cooling System Off Time Calculation In combined heating/cooling systems, if room temperature is outside the comfort range, DUC does not switch off the system. If room temperature is within the comfort range, DUC calculates two off times. One calculation is the same as for heating-only systems.

Page 56: Economizer / Eco
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Economizer / ECO Function Legacy RACL function: Decide on the most economical system operation for full and partial air conditioning systems. For a full air conditioning plant, it calculates the control signal (Y output) for energy recovery on the basis of actual outdoor air enthalpy, return air enthalpy, and demand.

Page 57 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Internal Parameters Excel Web / Excel Web II Economy operation range Number type: decimal, Unit: percent Default: 30.0 percent, Range: 0 through 100.0 percent The operation range of the ECO icon is located symmetrically around the zero point of the basic controller (50 percent).

Page 58 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS P4 Min. FA/wheel speed P5 Heating costs less than cooling costs (1) Heating costs greater than cooling costs (0) ECO Operation The following diagram illustrates the ECO function within a control loop: The ECO control icon is composed of six internal modules: 1.

Page 59 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The following diagram illustrates the relationships between the modules. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 60 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Module 1 Heating/Cooling Based on the positioning signal from the basic temperature controller (X1), this module decides whether there is a need for heating or cooling. To ensure stability for smaller deviations as well, the module establishes a hysteresis symmetrically around the zero point of the basic controller (50 percent).

Page 61 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Module 2 Humidify/Dehumidify Based on the positioning signal from the basic humidity controller (X2), this module decides whether there is a need to humidify or dehumidify. To ensure stability for smaller deviations as well, the module establishes a hysteresis symmetrically around the zero point of the basic controller (50 percent).

Page 62 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Module 3 Characteristic Curve This module calculates the position of the characteristic curve of the ECO icon on the basis of outdoor air enthalpy and return air enthalpy in full air conditioning systems, or on the basis of outdoor air temperature and return air temperature in partial air conditioning systems.

Page 63 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Module 4 Temperature Recovery This module calculates a continuous positioning signal (YT) from the basic temperature controller (X1). If there are no limitations (that is, P4 is zero), the module outputs a positioning signal (YT) from 0 to 100 percent. If there is a limitation, the module converts it into a maximum limitation with mixed air damper operation and into a minimum limitation with regenerative transfer operation.

Page 64 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Maximum limitation with mixed air damper operation: Direct acting signal has a solid line. Reverse-acting signal has a dashed line. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 65 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Minimum limitation with regenerative transfer operation: Module 5 Moisture Recovery This module functions the same as Module 4 except that it calculates a signal from the humidity controller (X2). The module outputs continuous positioning signal YF. Module 6 Selection Logic This module evaluates the results from Modules 1 through 5 and decides whether to transmit positioning signal YT or YF to output Y of the ECO control icon.

Page 66 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS (hAL > hAbL) MAX Humidity Controller (hAL > hAbL) MIN Temperature Controller (hAL < hAbL) MIN Humidity Controller (hAL < hAbL) 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 67: Eql (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE ECO Example The following diagram illustrates the use of the ECO control icon in a complete control loop. Note that the control loop must reverse the outputs from the temperature and humidity controllers before they connect to the ECO icon. The PID controllers reverse the outputs with the reversed connection of the controlled and reference variable.

Page 68: Event Counter / Evc
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Event Counter / EVC Similar to “Counter (Excel Web / Excel Web II)” Function Register counted values. I/O Dialog Box Inputs Two digital inputs, XD1 and XD2, where: XD1 = Event input XD2 = Reset One analog output, Y (Counter value within the limits of 0 to 10 37 ).

Page 69: Factorial (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Factorial (Excel Web / Excel Web II) Function Calculates the factorial of the input (e.g. 5!=1*2*3*4*5). I/O Dialog Box Input One analog input (X). Output One analog output (X!). Internal Parameters None. Fixed Applications (XFM) Function Extended Function Modules (XFMs) are applications (or subprograms) that can combine with other control icons, subprograms, or points to provide additional...

Page 70 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS ramp.csd UP-DOWN RAMP As an input varies between a minimum value and a maximum value, the output follows on a time-delayed basis. ratio.csd RATIO As an input varies between two input bounds, output varies between two output bounds.

Page 71: Enhanced Pid
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE ENHANCED PID Function Standard PID function with additional features such as built-in start-up ramp, direct- reverse action selection, integral recalculation to prevent windup below minimum/above maximum, and an auxiliary input for limit applications and integral reset.

Page 72 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Outputs Out = output (Parameter P1 controls action of output, 0 = direct action, 1 = reverse action) Rmp = start ramp value (0-100 pct) The output start value input controls the initial value of the output at the beginning of the start ramp period.

Page 73 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Aux Input Function The auxiliary input, Aux, can prevent integral windup when EPID is used in a limit application. In this case, you pass a control signal from some other PID controller through the EPID before going to the controlled device. This control signal passes through unchanged unless the EPID input rises above its setpoint on a high limit or falls below its setpoint on a low limit.

Page 74 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Internal Parameters Rev Acting Enable P1 Controls the action of an output 0 = direct action 1 = reverse action Throttling Range (Xp) P2 Equivalent to the proportional band value NOTE: Do not set this parameter to 0 Integration Time (Tn) P3 If this parameter is set to 0, the integral control is disabled Derivative Time (Tv)

Page 75: Enthalpy
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE ENTHALPY Function Calculate enthalpy and humidity ratio based on temperature and relative humidity. This function operates in a similar way to H,X control, except that the XFM works in English units (temperatures in Fahrenheit) rather than metric units (temperatures in Celsius).

Page 76: Flow Calculation
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS FLOW CALCULATION Function Output a flow rate calculated from a flow sensor or transmitter (air, gas, water flow, etc). I/O Dialog Box Input The input, In, comes from a flow sensor (air, gas, water, etc). The input can be direct reading (that is, in actual engineering units [PSI, INW, etc]) or generic (0-100 PCT).

Page 77 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Input signals can be in actual engineering units or generic (0-100 percent type). For inputs that read in actual engineering units, P2 and P3 must be equal (OK to leave default values). For generic inputs, set P2 equal to the actual sensor range (that is, the value in engineering units that produces 100 percent at the input).

Page 78: Lead-Lag
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS LEAD-LAG Function This XFM controls two devices with lead-lag logic. I/O Dialog Box Inputs Ld Lead Device, 0 for first device, 1 for second LdE Lead Device Enable, 1 to Enable, 0 to Disable LdF Lead Device Failure, 0 is normal, 1 is failed LgE Lag Device Enable, 1 to Enable, 0 to Disable St1 Device 1 Status, 1 is On, 0 is Off...

Page 79: Power Demand Control Xfms
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Internal Parameters Power Demand Control XFMs Function The power demand control functions measure the energy consumption of the plant electrical units. They then calculate current power consumption, compare it to a power limit, and decide which loads to switch on or off. Power demand control consists of four XFMs: XFM 35, XFM 36-1, XFM 36-1S and XMF 36-1R.

Page 80 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The following diagram illustrates the principal connections of XFM 35 and multiple XFM 36-1/S/Rs: The principle of operation is that XFM 35 implements the desired algorithm and then outputs the actual kW shed/restore values to the XFM 36-1/S/Rs. A positive kW value is a command to restore loads totaling that much kW.

Page 81 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE For load restoration, XFM 35 outputs positive values up to the value set by parameter five every 1/10th of the interval set by parameter 10. Priority group 3 loads are restored first if they are available for restoration, followed by loads in priority groups 2 and 1.

Page 82 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS edited (in the datapoint dialog box) with the priority group number to which the XFM 36-1/S/R belongs. The following figure shows a small power demand program with three priority groups each with three loads. Note that the “1” has been added to certain user 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 83 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE addresses in the first priority group. Likewise, 2 and 3 are added to the appropriate user addresses in the second and third priority groups, respectively. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 84 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The following diagram shows an example of how datapoint ID___On_Prio_2 exchanges data between the XFMs. The value of ID___On_Prio_2 tells XFM 35 if there are any loads that can be restored (turned on) in priority group 2. If not, XFM 35 will not send out a positive kW value on output Po2, but send it to Po1.

Page 85 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE After all the XFM 36-1s write to the ID___On_Prio_2 datapoint, XFM 35 reads it. If XFM 35 has to restore some loads, it will read inputs ID___On_Prio_1, ID___On_Prio_2 and ID___On_Prio_3. If all are 1, it will restore loads in priority group 3 first, then group 2 and then group 1.

Page 86: Ratio
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS RATIO Function Perform a linear translation on a single input value from one scale to another. As an input varies between two input bounds (IB1 and IB2), vary an output between two output bounds (OB1 and OB2). I/O Dialog Box Inputs OB2 = output bound 2...

Page 87: Totalizer Xfm
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Internal Parameters Set Parameter 1 to 0 for bounded output. Set Parameter 1 to 1 for unbounded output. If OB1 and OB2 are set to the same value, then the output will equal this value. If IB1 and IB2 are set to the same value, then the output will equal OB2.

Page 88 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS h = Current hourly consumption ph = Past hourly consumption d = Current daily consumption pd = Past daily consumption pmo = Past monthly consumption The outputs require creation of five user addresses of the type pseudo analog. Internal Parameters P1 = Displ_current_hour* (Current hourly consumption) P2 = Displ_past_hour* = (Past hourly consumption)

Page 89: Up-Down Ramp
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE UP-DOWN RAMP Function As an input varies between a minimum value and a maximum value, vary an output on a time-delayed basis. I/O Dialog Box Inputs Max = output maximum (input or parameter) Inp = Input to be ramped Min = output minimum (input or parameter) Minimum and maximum input values impose limits on the output value.

Page 90: Xfm 35 Description
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS XFM 35 Description Purpose XFM 35 is a strategy program for maximum load optimization. It controls a maximum of three priority groups of loads. Each priority group can contain up to 50 single- stage load programs (XFM 36-1/S/Rs) connected in a loop. After you place XFM 35 in a control strategy, bring up its I/O dialog box.

Page 91 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Type abbreviations: DI: Digital input VA: Virtual (pseudo) analog Datapoints Button Click the Datapoints button to display the datapoints dialog box for XFM 35. Click on Set for each of the XFM pointnames. CARE automatically creates user addresses with the same names.

Page 92 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS ID___Off_Prio_3 Input/ Input: Output There is no load to switch off in priority group 3 There is at least one load to switch off in priority group 3 Output: Reset of the loads-available-to-turn-off detection for the priority group 3 ID___Man_load_she Output...

Page 93 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE XFM 35 Internal Parameters The XFM 35 internal parameters dialog box lists parameters that control program functions. Later sections describe how to use these parameters depending on operation desired. The table following the dialog box summarizes parameter types, functions, default values, setting range, and engineering units.

Page 94: Priority Groups And Their Switching Behavior
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Parameter Setting Default Number Type Brief Description Range Value Unit Progr. Prio/Rotat(0/1)_P1 (sequential or rotational load 0 or 1 Integer shed method for priority 3 groups) Sequential=0 Comm. Safty_Factor_”a” (offset factor for Ideal Curve 0-1000 Integer algorithm)

Page 95: Xfm 35 Algorithms
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Switching Off XFM 36-1 Loads XFM 35 switches off Priority Group 1 XFM 36-1 loads first. It then switches off Priority Group 2 loads and then Group 3 loads. XFM 35 sets the Priority Group 1 Po1 output to a negative switch-off power value as long as the value of user address ID___Off_Prio_1 is 1 (True).

Page 96 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The algorithm uses the measured energy values (Z 1 Z 10 , and Z 11 ) to calculate current power consumption (Parameter P1), possible power consumption (Parameter P4), and finally the power value to be shed or restored by the XFM 36- 1/S/R loads (P4 minus P1).

Page 97 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The following table lists the Sliding Window algorithm parameters. Parameter Setting Default Number Type Brief Description Range Value Unit Display Current Power Consumption none none Display Possible Power with constant none none Power Consumption Comm.

Page 98 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The algorithm uses an offset factor (P18) to amplify the power setpoint (possible power that displays in Parameter P4) at the beginning of every measurement interval. The effect of the offset factor lessens as time passes and disappears by the end of the measurement interval.

Page 99 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Select the Extrapolation algorithm by setting Parameter P9 to the value 3. A safety margin parameter (P6) provides a secure margin between the current power peak (Parameter P1) and the possible power (Parameter P4). The internal user address IA___Energy_Intv indicates current energy consumed (equal to Z 7 - Z 0 in the previous diagram) during the measurement interval.

Page 100: Xfm 35 General Functions
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS XFM 35 General Functions The strategy for the maximum load optimization program (XFM 35) includes general functions to provide stability, special features, and power control alarms . These functions have a high priority in making the final decisions about load switching. Functions include: •...

Page 101 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Parameter Modifications at Run-time CAUTION Do not modify Parameters P5 to P18 during power calculations. Improper power calculations may result. Using the Sliding Window algorithm, parameter modifications are introduced into the calculations when a sample occurs (every tenth of Parameter P10). Using the other two algorithms, Ideal Curve and Extrapolation, the parameter modifications are introduced into the calculation at the beginning of a measurement interval (after receiving a synchronization pulse).

Page 102 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Freeze Time Function (Ideal Curve and Extrapolation only) The freeze time function (only for the Ideal Curve and Extrapolation algorithms) is initiated at the beginning of every measurement interval (window) and ends after the time set in Parameter P11 has elapsed.

Page 103 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE switched off for the longest time is switched on at first. The load that has been switched on for the longest time is switched off at first. The settings of Parameters P15, P16 and P17 are transmitted to every load via the appropriate internal user addresses ID___Rotating_P1, ID___Rotating_P2 and ID___Rotating_P1.

Page 104: Xfm 36-1 Description
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Totalizer Input Reset (Counter_Zi) The Totalizer Counter_Zi transmits the rising, measured kWh value to the first XFM 35 input Zi. Totalizer Counter_Zi is reset to zero when a limit (internal constant value) of 10 6 kWh has been exceeded. This reset also resets all the internal archives of past kWh values (past samples) to their values minus the value of Counter_Zi that is nearest to 10 6 kWh.

Page 105 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Outputs: Output Abbrev. Type Comment 1. Power to switch Power switching value to next XFM 36-1 or to XFM 35 2. Load stage DO (1/6 XF Load switching command (ON/OFF). 524) Output to a relay or other modules (for example, a switching table).

Page 106 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Input/ User Address Type Output Comment ID___Rotating_P Input Load switching is on sequential operating mode in the group (XFM 36-1 only). Load switching is on rotating operating mode in the group (not with XFM 36-1S). IA___Off_Index_P Input/ The greatest switch-off time of all previous loads (and this...

Page 107 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Parameter Setting Default Number Type Brief Description Range Value Unit Display Rotational/Sequential (Operating Mode) 36-1: none lnteger 1=rotational; 0=sequential none 36-1S 36-1R Display Po_Power_to_Switch (switching power input) none none Display RM_Input_Feedback (see RM Functions none none lnteger...

Page 108: Automatic Load Switch-On After Maximum Off Time Expiration
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Automatic Load Switch-On after Maximum OFF Time Expiration Some electrical loads such as refrigerators or cold-storage houses cannot be switched off for long periods of time or the plants or goods in them may sustain damage.

Page 109: Rm Functions
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The following table lists parameters used for the automatic switch-on of load after maximum OFF time has expired: Parameter Setting Default Number Type Description Range Value Unit Display Minimum ON Time Active none none Integer Display Maximum OFF Time Expired...

Page 110 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Manual Operating Mode You can manually set Parameter P13 of XFM 36-1/S/R to 1, to keep the load always ON. You can set P13 to 2 to keep the load always OFF. These manual settings are useful for test purposes.

Page 111: Xfm 36-1 Priority Group Assignment
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE (Shutdown) XFM 35 determines when immediate shutdown is necessary (see General Functions in the XFM 35 section) and sets user address ID___Shutdown to 1 to command all XFM 36-1/S/Rs to immediately shed their loads. When an XFM 36-1/S/R reads a 1 value in ID___Shutdown, it switches off its load, regardless of minimum ON time.

Page 112 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS You select the sequential mode of load switching in each priority group by setting Parameters P15 (for Group 1), P16 (for Group 2) and P17 (for Group 3) in XFM 35 to zero. XFM 35 passes these parameters to each XFM 36-1 via the corresponding user addresses ID___Rotating_P1, ID___Rotating_P2, and ID___Rotating_P3.

Page 113: Xfm 36-1/R Rotational Load Switching
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE • The XFM 36-1/S is in automatic operating mode (Parameter P13 = 0). • Parameter P15/16/17 in XFM 35 is 0 and the corresponding user address ID___Rotating_P1/2/3 is 0.(ID___Rotating_P1/P2/P3 is not required for groups with XFM 361S.) •...

Page 114 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The rotational mode switches an XFM 36-1/R load independent of its rank in the group (Parameter P14 [Load Number]). Each XFM 36-1/R in a group counts the duration (in seconds) of its ON status and stores it in Parameter P8. It stores its OFF status in Parameter 9.The maximum value of all P8s in a priority group is stored in user address IA___On_Index_P1/2/3.

Page 115: Hc (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE HC (Excel Web / Excel Web II) Functions Legacy RACL function: Calculates an output according to a user-defined heating compensation curve. I/O Dialog Box Inputs TSet = room temperature setpoint. TOat = outside air temperature. Outputs TWtr = supply water temperature.

Page 116: Heating Curve With Adaptation / Hca
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Heating Curve with Adaptation / HCA Function Calculates an output according to a user-defined and adaptable heating compensation curve. The output is used as a setpoint for a discharge control loop. For example, HCA can be used to calculate a discharge air temperature setpoint. Software calculates the discharge air temperature setpoint from the room temperature setpoint and the outdoor air temperature using the heating compensation curve.

Page 117 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Internal Parameters Excel Web / Excel Web II Heating curve curvature P1 Number type: Decimal, Unit: None Default: 1.33, Range: 0 to 2. Heating curve slope P2 Number type: Decimal, Unit: None Default: 1.6, Range: 0.4 to 4.5 Heating curve slope limit P3 Number type: Decimal, Unit: None Default: 1.6, limits: 0.4 to 4.5...

Page 118 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The controller uses parameters to performs several tasks to ensure economic heating. Apart from the basic functions it performs (to control the desired temperature according to a time program), the controller also ensures that certain temperatures are maintained to protect the system or building.

Page 119: Humidity And Enthalpy / H,X
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE For other types of heating systems, reset of the curvature value is not important where high flow temperatures cannot cause any damage. Heating Curve Adaptation The controller can use mean values of the room, outside air, and flow temperatures to automatically and gradually adjust the heating curve.

Page 120 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS I/O Dialog Box Excel Web / Excel Web II Inputs Two analog inputs (X1 through X2), three analog inputs (Excel Web / Excel Web II), required, where: X1 (Excel Web / Excel Web II: TOat) = outside air temperature in degrees Fahrenheit (23F through 122F [-5C through +50C]).

Page 121: Integral (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The following diagram illustrates h,x operation: Integral (Excel Web / Excel Web II) Function Calculate the integral (sum) of the input signal. I/O Dialog Box Input Two analog inputs, where: X = input Max = maximum value of Y (integral limit) Output One analog output (Y = integral output).

Page 122: Last Value (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Clear Clock FALSE FALSE TRUE or FALSE "Last output" TRUE TRUE TRUE or FALSE "Last output" FALSE FALSE Y = NOT Y changes from FALSE to TRUE TRUE TRUE changes from FALSE to Y = NOT Y TRUE TRUE FALSE...

Page 123: Limit (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Inputs X = Value to convert X1 = input value limit 1 X2 = input value limit 2 Y1 = output value limit 1 Y2 = output value limit 2 Outputs Y = converted value Internal Parameters none Special conditions...

Page 124: Ln (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Ln (Excel Web / Excel Web II) Function Calculates the logarithmus naturalis I/O Dialog Box Input One analog input (X). Output One analog output (ln X). Internal Parameters None. Logic Counter (Excel Web / Excel Web II) Function Compares binary values.

Page 125 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Other Examples See the Examples chapter in this manual for examples of MAT control icon use with other control icons. Control Strategy MAT I/O Dialog Box Input None. The mathematical editor dialog box controls formula inputs. Output One analog output (Y).

Page 126: Connection Of The Mat Icon To A Control Icon
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Connection of the MAT Icon to a Control Icon 1. Click on the icon in the Control strategy work space to which the MAT icon should connect. RESULT: The dialog box for the icon displays. 2.

Page 127 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE • Type a user address name. • Select a pseudopoint. In the Control strategy function, click the desired pseudopoint in the pseudopoint bar at the bottom of the window. In the Switching logic function: - Click menu item Software points.

Page 128: Formula Entry Procedure
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Formula Entry Procedure Procedure 1. Select the MAT editor in either the Control strategy or Switching logic window: In the Control strategy function, click the MAT icon in the list of control icons and place the MAT symbol in one of the rectangles in the Control strategy work space.

Page 129 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE When you add a point by clicking it in the physical or software point bar, the Math Editor automatically adds the quotes to the user address name. • Type a value, for example, 23 or 10. Or, click the desired numbers in the calculator pad in the Math Editor dialog box.

Page 130 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Linear Polynomial “ Double quotes (to enclose a user address name) Left bracket Right bracket Divide Multiply Subtract Numbers Decimal point See the Function Hierarchy note for the rules of order that the MAT operator follows in solving a formula.

Page 131 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Function Hierarchy The MAT operator adheres to the typical rules of formula calculation: First, MAT solves any SQRT, e^x, integral, differential, linear, and polynomial functions in a left to right order unless overridden by brackets. Next, it performs multiplications (*), divisions (/), additions (+), and subtractions (-) in this order unless overridden by parentheses or brackets.

Page 132: Integral Function (Integ) Dialog Box
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS P8 Internal parameter P9 Internal parameter P10 Internal parameter P11 Internal parameter All internal parameters are for software use only. Integral Function (INTEG) Dialog Box (In Excel Web / Excel Web II replaced by the function “Integral”). Purpose Calculate an integral.

Page 133 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE RESULT: If you clicked OK, the mathematical editor dialog box displays with the formula. Example: 6. Click OK to accept the formula and close the dialog box. 7. If in the Control Strategy, connect the MAT icon to the appropriate icon. See the Connection of the MAT Icon to a Control Icon procedure for details.

Page 134: Linear Dialog Box
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS LINEAR Dialog Box Function Legacy RACL function: Calculates the linear product of the inputs I/O Dialog Box Inputs One through thirty two inputs (X1 … X32). Outputs One limited output (Y); Y = X1*P1 + X2*P2 +...+ Xn*Pn. Internal Parameters P1 …...

Page 135 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE • Select a user address from the physical point bar in the Control strategy or Switching logic window. • Type a user address name. • Select a pseudopoint. In the Control strategy function, click the desired pseudopoint in the pseudopoint bar at the bottom of the window.

Page 136: Polynomial Equation (Pol) Dialog Box
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS 0.7 * 76 + 0.2 * 70 + 0.1 * 68 = 53.2 + 14 + 6.8 = 128.0 Polynomial Equation (POL) Dialog Box Function Legacy RACL function: Calculates the polynomial of the inputs Formula POL= (x + a1)*(x + a2)*(x + a3)*(x + a4)*(x + a5) Y= (X + N1)*(X + N2)*(X + N3)*(X + N4)*…*(X + N31) (Excel Web / Excel Web II)

Page 137 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE 3. Enter a1 (N1) through a5 (N31) values in the editing fields (in the parameters dialog box). 4. Click OK. Or, to close the dialog box without saving, click Cancel. RESULT: If you click OK, the mathematical editor dialog box displays with the formula.

Page 138: Maximum / Max
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Maximum / MAX Function Returns the highest value of all inputs. For example, in control technology, continuous positioning signals are often calculated using mathematical functions. These functions are defined for the entire set of real numbers, while positioning signals are typically valid only for a subset of numbers, for example, 0 to 100 percent.

Page 139: Merge (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Merge (Excel Web / Excel Web II) Function Merges multiple inputs to a combined output Formula Result for 4 inputs: Y = X1 + X2*P1 + X3*P1*P2 + X4*P1*P2*P3. Example: P1 = 2, P2 = 4, P3 = 4, P4 = 3 X1 = 1, X2 = 2, X3 = 3, X4 = 1 Y = X1 + X2*P1 + X3*P1*P2 + X4*P1*P2*P3 Y = 1 + 2*2 + 3*2*4 + 1*2*4*4...

Page 140: Minimum / Min
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Minimum / MIN Function Returns the lowest value of all inputs. For example, in control technology, continuous positioning signals are often calculated using mathematical functions. These functions are defined for the entire set of real numbers, while positioning signals are typically valid only for a subset of numbers, for example, 0 to 100 percent.

Page 141: Monoflop (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Monoflop (Excel Web / Excel Web II) Functions Sets the output to TRUE (1) for the time defined in the parameter "signal time", if the input becomes TRUE (1). I/O Dialog Box Inputs One digital input. Outputs One digital output.

Page 142: Multi-Switch In (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Multi-Switch In (Excel Web / Excel Web II) Function Conditional switch. Switches the value of a specified input to the output, depending on the "Sel X" input. I/O Dialog Box Input Two through thirty two analog inputs. One analog input (Sel X) to select the active input.

Page 143: Multiplication (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Multiplication (Excel Web / Excel Web II) Function Multiplies the input values I/O Dialog Box Input Two through thirty two analog inputs. Output One analog output (Prod), product of inputs. Internal Parameters None. Negate (Excel Web / Excel Web II) Function Negates the analog input value mathematically.

Page 144: Night Purge / Nipu
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Night Purge / NIPU Function Starts and stops ventilation systems to precondition rooms when cold outside air is available during non-working hours (usually, nighttime). To switch on the air conditioning as late as possible, this function permits room temperature to drop below room temperature setpoint during night cooling.

Page 145 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Output One digital output YD (Excel Web / Excel Web II: Y). This output switches to 1 when all the following conditions are met: 1. Room temperature minus outdoor air temperature is greater than the Room/OAT min.

Page 146 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS temperature Number type: Decimal, Unit: Degrees Fahrenheit Default: 60F (15C), Range: 0 through 90F (-25 through +30C) This value is the minimum outdoor air temperature at which Night Purge continues to function. If the outdoor air temperature drops below this value, the supply of 100 percent outdoor air stops immediately.

Page 147: Not (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE NOT (Excel Web / Excel Web II) Function Negates the binary input value. I/O Dialog Box Inputs One digital input (X). Output One digital output (X-), containing the negated input. Internal Parameters None. Odd Parity (Excel Web / Excel Web II) Function Compares binary values and returns TRUE(1), if the number of TRUE(1) elements are odd.

Page 148: On-Board Do (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS On-Board DO (Excel Web / Excel Web II) Function Write on-board digital output of the Excel Web / Excel Web II controller main board. I/O Dialog Box Input One digital input (X). Output None. Internal Parameters None.

Page 149: Optimum Start/Stop / Eoh
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Optimum Start/Stop / EOH Function Calculate optimized values for starting and stopping the heating plant and for the supply water setpoint. The EOH function takes into account the residual heat in a building to avoid unnecessary heating operation and, thus, save energy. Required room conditions are met at all times.

Page 150 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Excel Web / Excel Web II Inputs Three analog inputs where: X1 (Excel Web / Excel Web II: TRm) = Room temperature X2 (Excel Web / Excel Web II: TOat) = Outdoor air temperature X3 (Excel Web / Excel Web II: TSet) = Room temperature setpoint via a user address.

Page 151 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Excel Web / Excel Web II Minimum pre-heat time (with room sensor) P4 Number type: Whole number, Unit: Minutes Default: 120 min, Range: 0 through 1440 min Maximum pre-heat time (only Excel Web / Excel Web II) Number type: Whole number, Unit: Minutes Default: 2880 min, Range: >...

Page 152 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Dead time 1 P10 Number type: Whole number, Unit: Minutes Default: 5 min, Range: 0 through 60 min Time constant 1 P11 Number type: Whole number, Unit: Minutes, Default: 300 min, Range: 0 through 2880 min Dead time 2 P12 Number type: Whole number, Unit: Minutes Default: 5 min, Range: 0 through 60 min...

Page 153 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE P18 Heating curve curvature P19 Heating curve slope EOH Operating Procedures EOH completes a total setback operation when the next switching point of the optimal heating circuit occurs. In this case, the supply temperature setpoint is set to 32F (0C).

Page 154 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS As an example, at 32F (0C): Preheat time (P8) = 120 min Temperature increase (P6) = 20 F Deg Setpoint (X3) = 68F (20C) Outdoor air temperature (X2)= t VV = (-120 min/20) * 10 + 120 min t VV = 60 min The following diagram illustrates this action: During this preheat phase, EOH transmits a 1 to the output (YD2).

Page 155 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE program again apply. EOH calculates the supply temperature setpoint (Y1) in accordance with the heating curve. Parameter P18 provides the curvature. Parameter P19 provides the slope which is displaced in accordance with the room temperature setpoint including the increase.

Page 156 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS CAUTION It is absolutely essential that the switch point for cool-down is the latest possible time point in the Time Program. This precaution prevents premature cool-down and problems with rooms being outside required conditions. Heating Optimization with Room Sensor EOH can calculate the residual heat in a building and the exact preheat points only if there is a room sensor (X1).

Page 157 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE You can influence the type of optimization procedure that EOH uses by adjusting Parameter P4, minimum preheat time. For very small values of P4, for example, zero minutes, EOH only uses the variable time preheat (rapid preheating) because it is never possible to reach the setpoint in zero minutes regardless of maximum supply temperature.

Page 158 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Cool-Down Optimization WITH Room Sensor Cool-down optimization with a room sensor operates with the same principles as without a room sensor but it also takes into account room temperature: • If the room temperature is higher than the setpoint (for example, through isolation, body heat, etc), the characteristic set is steeper causing EOH to switch off heating earlier (maximum 120 minutes).

Page 159 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Dead time 2 (Parameter P12) and Time constant 2 (Parameter P13) define the second model. This building model applies for a preheat that follows a lengthy cool- down (greater than 24 hours). After a lengthy cool-down phase, the building walls are also cooled down and must be heated if the room is to be heated.

Page 160 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS EOH Operation Example 1 The following schematic diagram illustrates EOH use. A switching table implements an outdoor air temperature-dependent frost protection function outside of EOH. When outdoor air temperature is less than or equal to 2C (36F), the table sets a constant room temperature setpoint (for example 10C [50F]).

Page 161 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The following flowchart illustrates the logic decisions of this example. EOH Operation Example 2 The following diagram shows another example of EOH use At optimum start, YD2 goes to logic 1 and returns to logic 0 at occupancy start time. At optimum stop, YD3 goes to logic 1 and remains at this value until optimum start occurs (next day or later).

Page 162 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Optimum Start without a Room Sensor The following diagram illustrates the calculation of an ON time based on an outdoor air temperature/preheat time at 32F (0C) characteristic: EOH calculates a discharge air setpoint based on the selected outdoor air temperature/discharge air (OAT/DA) schedule (default is 1.6) plus the effect of P8 (parallel shift) and the time program room setpoint it must achieve.

Page 163: Optimum Start/Stop / Eoh3
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE • Connect a space sensor. • Set space temperature setpoint greater than 64.4F (18C). • Enable adaptation (P14). • Ensure the following conditions: Average OAT must be less than 59F (15C). Adaptation must occur at least three times before you can alter the defaults for the basic setting of the heating curve.

Page 164 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS • actual setpoint • next setpoint • time until next setpoint The EOH3 function gets these values via the datapoint connected to the input TSet during processing. If the "EOH / EOV Optimization" option is inactive (Analog Value properties), the heating curve calculates the heating supply air temperature setpoint using the room temperature setpoint.

Page 165 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Optimum start without room sensor Optimum start due to minimum preheat time without room sensor Optimum start with room sensor Optimum start due to minimum preheat time with room sensor Optimum stop without room sensor Optimum stop with room sensor RmCtrl (YD5) = indicates room control mode.

Page 166 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Dead time short P8 Number type: Whole number, Unit: Minutes Default: 5 min, Range: 0 through 60 min Time constant short P9 Number type: Whole number, Unit: Minutes, Default: 75 min, Range: 0 through 2880 min Dead time long P10 Number type: Whole number, Unit: Minutes Default: 5 min, Range: 0 through 60 min...

Page 167 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE P4 Minimum outdoor temperature for early setback P5 Preheat time for 0°C P6 Optimum stop factor P7 Room comfort zone optimum stop P8 Dead time short P9 Time constant short P10 Dead time long P11 Time constant long P12 Building model adaption enable 0 = disable...

Page 168 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS flow temperature control No room sensor connected control with night set-back control with total cool-down with room sensor control with total cool-down and minimum room temperature protection heating pump control continuously ON controlled by heating circuit frost protection limit outside air temperature Note: The heating pump must be controlled externally.

Page 169 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE minimum room °C temperature control mixed water temperature setpoint night setback time °C room temp room temp setpoint time EOH Operating Procedures EOH3 calculates the flow temperature setpoint with or without optimization as a function of the room temperature setpoint TSet, the outside air temperature TOat, the heating curve parameters curvature and slope.

Page 170 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The supply water temperature set TSup is calculated using te heating curve equation. The room temperature setpoint is equal to the required TSet (next occupied switch point) + P3 (no room temperature compensation). TSup = HC (TSet + P3, TOat, P16 (curvature), P17(slope)) HC –...

Page 171 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE During this preheat phase, EOH3 transmits a 1 to the output Start (YD2). You can use this output to determine to overwrite the supply temperature setpoint from the normal application program by the flow temperature setpoint (Y1) from EOH3. If the target time point of the switching program occurs in this time, EOH3 sets the output Start (YD2) to logical zero, meaning that the requirements of the normal applications program again apply.

Page 172 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The reheat time cannot be greater than 48h (P2, 2880 minutes) or shorter than the minimum preheat time (P1). If the minimum preheat time is reached, the temperature variable preheating begins immediately. The next two diagrams illustrate this operation for day and day/night operation. optimum start –...

Page 173 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE optimum start – temperature variable pre-heating room temperature °C T1lim increase room temperature day setpoint minimum pre-heat time night setpoint 120min time 6:00 8:00 calculated start point start point time schedule Cool-Down Optimization WITHOUT Room Sensor In cool-down optimization, EOH3 only looks at the outdoor air temperature to define the time point for early setback.

Page 174 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS protection limit, EOH3 will calculate the flow temperature setpoint with the heating curve and the reduced room temperature setpoint. After the cool-down phase, EOH3 resets output Stop (YD3) to zero so that the normal application program is again in control. CAUTION It is absolutely essential that the switch point for cool-down is the latest possible time point in the Time Schedule.

Page 175 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE To allow an optimum stop to save a significant amount of energy without losing comfort, the room temperature can drop by P7 below the actual room temperature setpoint TSet – P7. In this moment the EOH3 switches to room control mode with the room temperature setpoint equal to actual TSet –...

Page 176 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS building model °C room temperature room temp.setpoint room temp. at heating start time heating start art140.eps The diagram plots the development of the room temperature at the point of the heating switch-on time until it reaches the room temperature setpoint. You can draw this type of characteristic curve by recording the room temperature (analog input at the controller) and outputting this value to a plotter via an analog output with the characteristic curve 0 through 50 °C = 0 through 10V.

Page 177 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE • automatic operation (no wall module or external override no summer- or holiday switch) • the electronic caretaker is not active • no heat override function • no DHWS priority or condensation protection function If the parameter P19 set to 2 = ´Restart`, the heating curve slope adaptation will be restarted.

Page 178 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS EOH3 Operation Example 1 The following schematic diagram illustrates the usage of the EOH3 statement. A switching table implements an outdoor air temperature-dependent frost protection function outside of EOH. When the outdoor air temperature is less than or equal to 2 °C, the table sets a constant room temperature setpoint (for example 10 °C.

Page 179 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE the heating curve (default slope 1.6) and further modifies it with room temperature and room temperature setpoint of the time schedule. Heavy load — if the load on the system was so high that even an occupancy start time minus P5 and a maximum flow temperature setpoint P15 would be insufficient, then software calculates an even earlier start time.

Page 180: Optimum Start/Stop Energy Optimized Ventilation / Eov
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Optimum Start/Stop Energy Optimized Ventilation / EOV Function Calculate optimized values for starting and stopping air conditioning systems. Systems should start at the latest possible time and should stop as soon as possible to save energy. There are two modes of EOV operation, heating and cooling.

Page 181 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE YD3 (OptOff, Excel Web / Excel Web II) is logical 1 during system shutdown. Otherwise, it is 0. You can use these outputs in conjunction with an increased room temperature setpoint during the preheat phase. EOV Example See the Optimized Start/Stop application in the Examples chapter for a description of how to use EOV with other icons for a complete optimized system.

Page 182 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Lowest preheat time for OPT preheat P3 Units: Min, Default: 0, Range: 0 to 120 This is the minimum warm-up time for optimum start. This specifies a minimum amount by which to advance the scheduled start time in heating mode regardless of the actual optimum start calculation.

Page 183 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE High speed cooling factor P8 Units: Min/F Deg, Default: 10, Range: 0 to 100 Cool-down rate for optimum start. When the plant is turned on for cooling, this value is the number of minutes it takes to decrease room temperature by 1 degree This value can be automatically adjusted if the adaptation option is enabled.

Page 184 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The shortest advancement of start-up is set by Parameter P3 (lowest pre-heat). You must set this parameter to its lowest value so that the calculated start-up point is valid. The parameter’s maximum limitation is 1080 min (18 hours). The minimum limitation of advance time is 0 minutes.

Page 185 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE EOV shuts down the system without advance when the actual OAT is less than or equal to the minimum OAT (Parameter P5). Between these limits, EOV calculates advance time (T VHA ) as follows: Where t corr = (X3 - X2) * P6 In other words, the correction factor equals room temperature minus setpoint multiplied by the optimum stop factor.

Page 186 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS between the room temperature setpoint and actual room temperature. EOV assumes a linear room model. The minimum advancement of start-up is set by Parameter P7 (lowest cooling time for opt. cooling). You must set this parameter to its lowest value so that the calculated start-up point is valid.

Page 187 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE In other words, early switch-on time equals room temperature minus room temperature setpoint multiplied by the high-speed cooling factor. The high-speed cooling factor indicates how many minutes the system requires to compensate for a deviation of 1 K.

Page 188 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The following figure illustrates this relationship. Parameter P10 (optimum stop factor) weights the influence of the control difference on the characteristic curve. If Parameter P10 is zero, EOV calculates early shutdown based on OAT only. Adaptation of Factors For the advance calculation of the switch-on point in heating/cooling operation, EOV uses a model of controlled operation.

Page 189: Or (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Time Program Preparation When preparing the Time Program, set the switching points for system start/stop to the latest possible time because EOV automatically advances these times, if necessary. Also, you must set the Optimization variable to Yes in the Time Program for system start/stop.

Page 190 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS PID Operation For more information on PID operation, see the PID Operation section following this description of the inputs, outputs, and internal parameters. Inputs Two analog inputs, where: X = Controlled variable, for example, room temperature sensor. W = Reference variable, for example, room temperature setpoint.

Page 191 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Excel Web / Excel Web II Proportional band Xp Number type: decimal, Unit: same as the controlled variable (X) Default: 3.0, Range: -9999.0 through 9999.0 Proportional band value is equivalent to the throttling range. NOTE: Negative values will accomplish an opposite action on the output.

Page 192 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS P4 Integral action time Tn (in seconds). If you set Integral action time to zero in the internal parameters dialog box, software sets the P4 parameter to 1,000,000. A number this large effectively disables the integral term. P5 Minimum output (in percent) P6 Maximum output (in percent) P7 Reference variable (W) if entered as a parameter (not connected to a point)

Page 193 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE PID Controller P3 Proportional band Xp P4 Derivative time Tv (in seconds). P5 Integral action time Tn (in seconds). If you set Integral action time to zero in the internal parameters dialog box, software sets the P4 parameter to 1,000,000. A number this large effectively disables the integral term.

Page 194 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS PD Controller To use the proportional and derivative terms of the PID controller, set Integral action time to zero. Input the other parameters as explained for the P Controller. PID Controller Parameter Settings The PID controller is the fastest controller that can completely stabilize a deviation. The following diagrams show the stabilization of setpoint jumps with a PID controller that is set optimally.

Page 195: Pid Operation
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE PID Operation Closed Control Loops A PID is generally part of a closed control loop. Control is possible only in a closed control loop because the controller requires feedback from the controlled section with respect to changes in the positioning signal. The following diagram illustrates closed control loop operation: “Disturbance”...

Page 196: Pid Plus Controller / Pid
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Reverse PID Operation To reverse the working direction of the PID, exchange the inputs for the controlled variable and the reference variable. Or, connect the PID output to the input of a DIF control icon and assign 100 to the X1 parameter. PID With ECO You can use PID to provide a temperature input to an ECO icon for basic temperature control.

Page 197 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Excel Web / Excel Web II Inputs Two analog inputs, where: X = Controlled variable, for example, room temperature sensor. W = Reference variable, also known as setpoint. You can enter the reference variable (W) as a parameter (engineering unit index number and value).

Page 198 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Internal Parameters Proportional band Xp Number type: decimal, Unit: same as the controlled variable (X) Default: 3.0, Range: -9999.0 through 9999.0 Proportional band value is equivalent to the throttling range. NOTE: Negative values will accomplish an opposite action on the output. DO NOT use zero.

Page 199 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Parameter Number Descriptions P Controller (if W is NOT entered as a parameter) P3 Proportional band Xp P4 Integral action time Tn (in seconds). Always zero. P5 Minimum output (in percent) P6 Maximum output (in percent) P7 Dummy parameter.

Page 200 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS PID Controller (if W is NOT entered as a parameter) P3 Proportional band Xp P4 Derivative time Tv (in seconds). P5 Integral action time Tn (in seconds). If you set Integral action time to zero in the internal parameters dialog box, software sets the P4 parameter to 1,000,000.

Page 201 Current Error ∑ Error sum The PID Plus algorithm is implemented in Excel 5000 controller operation based on the following code: ;;; Reverse Acting PID Controller ;;; Integral action is enabled if the integral time is greater than or equal to 15 seconds and the integral ;;;...

Page 202 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS There is an automatic switchover from P control during the start-up phase to PI control during normal operation. The switching table sets the digital software point Enable_I_comp according to the following rules: • Enable the I component 15 minutes after the negative transition of user address STARTUP.

Page 203: Random (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Random (Excel Web / Excel Web II) Function Returns a random value Y in a range between user defined lower and upper limits A new value for Y is returned with every start of a loop cycle. I/O Dialog Box Input None.

Page 204 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Use the following procedure to create two curves for the desired Y output. For creating a ramp for Excel Web / Excel Web II, please refer to the “Creating a ramp (Excel Web / Excel Web II)“ section after the following procedure. Creating a Ramp 1.

Page 205 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE 3. Define Xa by clicking the left and right arrows in the scroll bar just below the X axis. As you click, the value of Xa changes. You can also click the gray area in the scroll bar or click the white box (thumb) in the scroll bar and move it to the desired position.

Page 206 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Parameter Number Descriptions P3 Ya(1), minimum value of the first ramp (curve) P4 Yb(1). maximum value of the first ramp (equivalent to the minimum value of the second ramp). P5 Slope of the first ramp. Formula: P6 Intersection of the Y axis with the first ramp.

Page 207: Read Global Reg. (Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Y scale ranges from 80 through 55 (Ya(2) through Yb(2)) If you increase the minimum on the Y scale from 0 to 30, RAMP changes the Y scale minimum for Curve 1 from 25 to 30 so that the curve stays within the minimum and maximum Y scale range.

Page 208: Read Priority (Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Inputs Three inputs where: Register: number of register to be read (0 …1023) Reset: 1 = write value of input Value to register after reading Value: reset value Outputs One output: Y = read value (=0 if register index is invalid) Internal parameters None NOTE:...

Page 209: Read / Ria
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Outputs Valid: Indication if a value is set for the datapoint (TRUE) or not (FALSE) Value: The value read from the priority (Valid is TRUE) or the default value from the parameter (Valid is FALSE) Internal parameters "Default value if priority is not set": The value of this parameter is written to the output ´Value` if the priority has no value.

Page 210 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Connect output attributes to other control icons or points as desired. NOTE: Analog and Digital outputs can only have one icon connected. Therefore, if another icon is connected to an input the RIA cannot be connected.

Page 211 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE RIA Attributes Table The following table lists attributes that you can select for the various point types. NOTE: The list of attributes presented in the icon change depending on the type of connection. For example, if the output is connected to a digital type connection (if it is a point or another icon), then the list of available attributes consists of only the ones marked dig in this this table.

Page 212: Reset Timer (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Reset Timer (Excel Web / Excel Web II) Functions Resets the timer of a “Timer value” function. I/O Dialog Box Inputs Trigger = Trigger, change from 0 to 1 resets timer. Timer Outputs Timer = Internal function register "Current Time" of "Timer value" function. Internal Parameter None.

Page 213: Round Up (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Round up (Excel Web / Excel Web II) Function Rounds the input value up to the next integer value, e.g. 3.1 becomes 4, -3.1 becomes -3. I/O Dialog Box Input One analog input (X). Output One analog output (Y).

Page 214 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Excel Web / Excel Web II Input One analog input (X). Outputs One to three analog outputs (Y1 through Y3). Internal Parameters The internal parameters dialog box allows you to set the three output signals (Y1 through Y3) graphically.

Page 215 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE 3. Define Xa by clicking the left and right arrows in the scroll bar just below the X axis. As you click, the value of Xa changes. You can also click the gray area in the scroll bar or click the white box (thumb) in the scroll bar and move it to the desired position.

Page 216 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS The following diagram shows how software interprets the graph. Parameter Number Descriptions P3 Ya(1), the minimum of the Y1 output P4 Yb(2), the maximum of the Y1 output P5 Slope of the Y1 output. Formula: P6 Y1 intersection with the Y axis P7 Ya(2), the minimum of the Y2 output P8 Yb(2), the maximum of the Y2 output...

Page 217 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Reverse Acting Example A PID output can be an input to a SEQ icon that controls three functions (heating, ventilating, and cooling): The result of this control over a range of 18 through 22 might look like this: 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 218 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Setup for the internal parameters is as follows. Direct Acting Example This example uses the Reverse Acting Example and adds an operator to make it direct acting: 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 219 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE The result of this control over a range of 18 through 22 might look like this: Note that the sequence diagram looks the same as for the reverse acting example. Setup for the internal parameters differs as follows. Sequencer Example In this example, the SEQ icon outputs to two Y variables from a PID: 74-5577–33 (US)

Page 220 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Setup for the internal variables: Using a SEQ to produce a setpoint This example produces a setpoint: 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 221: Set (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Setup for the internal parameters: Parameter Availability Only the Y parameters for SEQ are available in the controller after program installation. Negative Values Use the Ratio (RAMP) function to generate negative values. SET (Excel Web / Excel Web II) Functions Legacy RACL function: Set the output depending on the comparison of the inputs.

Page 222: Sinus (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Sinus (Excel Web / Excel Web II) Function Calculate the sinus function of X. Input value must be in radian. I/O Dialog Box Input One analog input (X). Value in radian (0 … 2*π) One analog output (Y).

Page 223: Subtract / Dif
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE I/O Dialog Box Input One analog input (X). Output One analog Output (Y). Internal Parameters None. Subtract / DIF Function Subtracts the sum of S (X2 … X6) (S1 … S32) inputs from the input value (X1) M. You can also use this function to reverse a signal.

Page 224: Switching Table (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Other Examples See the Examples chapter for other applications that use the DIF icon. Switching Table (Excel Web / Excel Web II) Function The Switching logic module sets the value of the TRUE(1) or FALSE(0) input to the output depending on the defined logic.

Page 225: Tangens (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Switching Logic/Rows Each input row consists of the following columns: Input Name = name of the row Actual Value = value which should be compared Cond. = relation between Actual Value and Comparison Value Comparison Value = reference value Hysteresis = deadband between Actual Value and Comparison Value Delay = time delay of the row validity...

Page 226: Time Counter (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Time Counter (Excel Web / Excel Web II) Function Counts the runtime when the input signal X is greater than or equal to 1. If the counter reset signal Rst is greater than or equal to 1, the runtime is reset to 0. I/O Dialog Box Inputs Two inputs where:...

Page 227: Tuncos (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Tuncos (Excel Web / Excel Web II) Functions Provides hidden time until next change of state information from schedule for the connected input. This information is only available for EOH and EOV functions and cannot be used in the control strategy.

Page 228: Wido (Excel Web / Excel Web Ii)
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS By using the second input, the function can be disabled. In this case, the output follows the input without delay like it is with the IDT control icon. Range of second input: 0 = ramp is enabled. Unequal 0 = ramp disabled. Output All datapoint types.

Page 229: Write Global Reg. (Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE I/O Dialog Box Inputs Three inputs where: X = input value Min = minimum limit Max = maximum limit Output One output (Y) with formula: Y= TRUE [1] if Min < X < Max. Internal Parameters None.

Page 230: Write / Wia
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Function Write the value of an input with a defined priority to an output which must be connected with the present value of a datapoint. The datapoint must be connected directly not by a connection line. I/O Dialog Box Inputs Three inputs where:...

Page 231 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE 1. Select desired attributes by clicking the down arrow to display options and then clicking desired attribute. (See Attributes Table for possible selections.) Click OK to save selections and close the dialog box. (Cancel closes the dialog box without saving selections.) RESULT The dialog box closes.

Page 232 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS X1=1 X2> Access Priority X3=0 Set New Access Priority Write Attributes WIA Operation Diagram Priorities Each point type has associated priorities that WIA and operator commands follow. There are two priorities for each point, command and residual. Priority is a number from 0 through 255.

Page 233 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE CARE defaults residual priority to zero (X3=0) so that all commands from WIA are accepted. You can set WIA to leave a higher residual. Attributes Table The following table lists attributes that you can select for the various point types. Note that the default values for most of these attributes can be changed via the CARE Editors.

Page 234 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS dig/ana AI/PAI DI/PDI AO/PO 3POS FLEX Accumulated Runtime Alarm Hysteresis Alarm Status Auto Value Cycle Count Global Broadcast Threshold High Alarm Limit High Warning Limit Low Alarm Limit Low Warning Limit Manual Value No Attribute Operational Mode** Operator Access Level Suppress Alarm...

Page 235: Root Y (Excel Web / Excel Web Ii)
EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE X root Y (Excel Web / Excel Web II) Function Calculates X to the root of Y. I/O Dialog Box Input Two analog inputs (Y, X). Output One analog output (X root Y). Internal Parameters None.

Page 236: Zero Energy Band / Zeb
ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS I/O Dialog Box Input Two through thirty two inputs. Output Two digital outputs. Internal Parameters None. Zero Energy Band / ZEB Function Determine setpoints to maintain a predetermined comfort band divided into heating, cooling, and zero energy bands. ZEB subdivides a predetermined comfort band into: •...

Page 237 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE X4 (Excel Web / Excel Web II: Hum) = Relative or absolute air humidity X5 (Excel Web / Excel Web II: TSet) = Temperature setpoint You can enter the X5 setpoint as a parameter (engineering unit index number and value).

Page 238 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS Comfort range P3 Number type: decimal, Unit: Deg Default: 4.0 Deg, Range: 0 through 30 This value defines the width of the heating, cooling, and zero energy ranges. The width of each range is two times this value. All ranges are equally wide. The zero energy range is located symmetrically around the setpoint X5.

Page 239 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE Operation The following diagram illustrates ZEB operation ZEB Mixed Air Operation When the ZEB/Load reset mode in the internal parameters dialog box is equal to 1 (ZEB), the application includes mixed air damper setpoint management as follows. If all three zone temperatures (X1, X2, X3) are within the zero energy range, ZEB controls temperature only through the mixed air dampers.

Page 240 ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS When the ZEB/Load reset mode (P8) in the internal parameters dialog box is equal to 1 (ZEB), 3 (Cooling control), or 4 (Heating and cooling), the ZEB energy management function calculates a cooling setpoint as follows. If the warmest temperature sensor value goes above the ZEB upper limit, mechanical cooling is enabled.

Page 241 EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE If the lowest zone temperature is in this range, ZEB enables heating, that is, it assigns 1 to YD1. Example: Maximum zone temperature X1 = 68 Minimum zone temperature X2 = 61 Average zone temperature X3 = 66 Comfort range P3 = 4FDeg Max.

Page 242: Examples
EXCEL CARE CONTROL ICONS EXAMPLES This chapter describes applications that combine multiple icons to perform a control function. Applications are arranged alphabetically and include the following: Attenuator Use the MAT, SWI, and DIF control icons calculate a good approximation of a mean value, in this example, an outdoor air temperature.

Page 243 EXCEL CARE CONTROL ICONS EXAMPLES Attenuator Average Value Calculation Floating Limits and Alarm Suppres- sion Operating Pump Switchover Optimized Start/Stop Positioning Signal Limitation Setpoint Adjust- ments System Regulation Trend Buffer Control 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 244: Attenuator
EXAMPLES CARE CONTROL ICONS Attenuator Purpose In many applications, the desired calculation is not based on a momentary value such as outdoor air temperature but is averaged over an hour. Instead of an exact mean value, you can calculate a good approximation by “attenuating” the value. For example, the following formula approximates outdoor air temperature: Approx.

Page 245: Average Value Calculation
EXCEL CARE CONTROL ICONS EXAMPLES Average Value Calculation Purpose The implementation of some heating limit functions require an average of outdoor air temperature (OAT) over three days. The formula for this calculation is: = (n*Y + X )/(n + 1) where n varies from 0 to i. Average, new Average, old Average, new is the momentary average value.

Page 246 EXAMPLES CARE CONTROL ICONS Control Icons Use the SWI, CYC, MAT, and EVC icons. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 247 EXCEL CARE CONTROL ICONS EXAMPLES Control Sequence The following diagram illustrates the control sequence in CARE. The CYC statement generates a series of impulses with a period duration of 10 minutes (scan time). To do this, the CYC icon must have the following parameter assignments: Switch-on time = 599 sec Switch-off time=1 sec...

Page 248 EXAMPLES CARE CONTROL ICONS is triggered on EVC that causes the calculation of the average value to start again. The new start can be triggered through a manual switch cabinet by a check of the system variable STARTUP. A switching table can implement the check of the STARTUP point: When STARTUP = 1, reset EVC to 1.

Page 249: Floating Limits And Alarm Suppression
EXCEL CARE CONTROL ICONS EXAMPLES Floating Limits and Alarm Suppression Purpose Fixed alarm limits for sensors such as a supply air sensor are not meaningful, so it is useful to adapt the limits to a setpoint within an adjustable interval. It is also often useful to suppress nuisance alarms.

Page 250 EXAMPLES CARE CONTROL ICONS 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 251 EXCEL CARE CONTROL ICONS EXAMPLES In addition to floating limits, the system should suppress all alarms as long as the supply air fan is off because the supply air sensor cannot measure correct values when the fan is off. The following diagram illustrates both alarm suppression and floating limits.

Page 252 EXAMPLES CARE CONTROL ICONS The following flowchart shows the required logic for floating limits. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 253 EXCEL CARE CONTROL ICONS EXAMPLES The following flowchart shows the required logic for alarm suppression. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 254 EXAMPLES CARE CONTROL ICONS To implement these procedures in CARE, you can use a switching table and a control loop with WIA, ADD, and DIF control icons. The following diagram illustrates the required CARE setup. 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 255: Operating Pump Switchover
EXCEL CARE CONTROL ICONS EXAMPLES Operating Pump Switchover Purpose Switch pump operation between two pumps dependent on hours of operation. RIA reads the operating hours attribute for each pump and provides the values to SWI icons for the switchover decision. Control Icons Use the RIA, SWI, and MAT icons.

Page 256 EXAMPLES CARE CONTROL ICONS 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 257 EXCEL CARE CONTROL ICONS EXAMPLES 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 258 EXAMPLES CARE CONTROL ICONS The following diagram shows the required CARE programming for this example. Switchover occurs every 100 hours. The switching tables save the time period for status P1 and status P2. Y1 and Y2 are MAT formulas that work together to operate the switching tables.

Page 259: Optimized Start/Stop
EXCEL CARE CONTROL ICONS EXAMPLES Optimized Start/Stop Purpose This application optimizes the start/stop of an air conditioning system. Systems should start at the latest possible time and should stop as soon as possible to save energy. Control Icons Use the EOV, SWI, MAT, and ZEB control icons. Description The following diagram shows the application in CARE.

Page 260: Positioning Signal Limitation
EXAMPLES CARE CONTROL ICONS Positioning Signal Limitation Purpose Limit the range of the output value sent to a positioning signal. For example, limit the range of values sent to a damper to from 0 to 100 percent. As shown in the following diagram, a function output can vary across all real numbers.

Page 261 EXCEL CARE CONTROL ICONS EXAMPLES The following flowchart represents the required control logic: 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 262 EXAMPLES CARE CONTROL ICONS The following diagram represents the control loop to implement the control logic: The minimum and maximum values are best input as parameters as shown in the control loop diagram (0 and 100 percent). The MIN statement transmits Y values that are less than or equal to 100 percent. The MAX statement transmits Y values that are greater than or equal to 0 percent.

Page 263: Setpoint Adjustments
EXCEL CARE CONTROL ICONS EXAMPLES Setpoint Adjustments Purpose During the Auto mode of operation, adjust the setpoint for a Time Program by ±7 Kelvin. During the Day mode of operation, adjust a permanently assigned setpoint of 20C (68F) by ±7 Kelvin. During the Night mode of operation, implement a fixed setpoint of 12C (54F).

Page 264 EXAMPLES CARE CONTROL ICONS The curve formula for Manual operation is: day = -8*(TW-3.99)-12 Where TW is the analog point representing TF26. The following diagram represents the control loop and switching logic tables that implement this example: The TF26 temperature selector is represented by the point “ess”. The MAT icons incorporate the formulas for the Auto and Day modes of operation.

Page 265 EXCEL CARE CONTROL ICONS EXAMPLES Auto/day operation switchover is via a switching table comparison. If input voltage TW is greater than 4.24V, the switching table is 1 and the SWI statement transmits the automatic setpoint. Other, SWI transmits the day setpoint. Night operation also is via a switching table comparison.

Page 266: System Regulation
EXAMPLES CARE CONTROL ICONS System Regulation This application regulates a partial air conditioning system with mixed air dampers, an air heater, and an air cooler. Setpoint management using the ZEB statement followed by PID controllers regulates this system. Description The following diagram illustrates system setup. ZEB/Load reset mode is 1 (ZEB) to receive the mixed air damper setpoint.

Page 267 EXCEL CARE CONTROL ICONS EXAMPLES Air Heater Controller The ZEB heating setpoint (Y3 output) connects to the controller for the air heater valve as the reference variable. If the ZEB statement initiates heating (YD1=1), the positioning signal from the controller reaches the valve drive. If YD1 equals zero, the controller is overridden and the valve is closed.

Page 268: Trend Buffer Control
EXAMPLES CARE CONTROL ICONS Trend Buffer Control Purpose In many cases, trend logs include points whose values change frequently. Over a lengthy time interval, these frequent variations in signal exhaust the capacity of the trend buffer. You can delay the filling of the trend buffer by preventing the writing of trend values to the buffer for a defined time.

Page 269 EXCEL CARE CONTROL ICONS EXAMPLES The following flowchart illustrates program action: 74-5577–33 (US) EN2B-0184 GE51 R0518 (Europe)

Page 270 EXAMPLES CARE CONTROL ICONS To implement this extended trend function, CYC must be part of a control loop that includes other functions. The following diagram illustrates the complete control loop. The SWI control icon switches the value of the sensor to the pseudopoint when CYC is in On time.

Page 271: Appendix A: Parameter List Description
EXCEL CARE CONTROL ICONS APPENDIX A: PARAMETER LIST DESCRIPTION Description When you translate a plant in CARE, CARE generates a parameter list file that documents the parameters used in the control strategy and switching logic for the plant. You can use this reference list after the CARE process is complete and you are testing the controller with the XI584 Operator Terminal.

Page 272 APPENDIX A: PARAMTER LIST DESCRIPTION EXCEL CARE CONTROL ICONS Switching table : SaFan Parameter file number P.Nr | Description | Value + Eng. Unit|Symbol Reference --------------------------------------------------------------------------------- | Internal use 0.000 | Internal use 1.000 | Hysteresis of Line 2 Table 1 2.000 | Comparison Value 2 of Line 2 Table 1 |...

Page 273 EXCEL CARE CONTROL ICONS APPENDIX A: PARAMTER LIST DESCRIPTION File Manager Procedure 1. Make File Manager the active window. One way to do this is to hold down the Alt key and press Tab until a message displays “File Manager”. Release the keys. Tip ⇒...

Page 274: Appendix B: Startup User Address
EXCEL CARE CONTROL ICONS APPENDIX B: STARTUP USER ADDRESS Definition The STARTUP user address (or “point”) is a digital pseudopoint that the controller sets to zero when power to the controller is off. Power-off can occur because of a restart or a power failure. When power returns, the controller sets STARTUP to 1. This set occurs before the controller application program starts.

Page 275 EXCEL CARE CONTROL ICONS APPENDIX B: STARTUP USER ADDRESS Switching Table Example This example shows how to set the start-up action for a two-stage ventilator. After power returns, the ventilator should start in the first stage, even if the Time Program that controls the ventilator requests the second stage.

Page 276 APPENDIX B: STARTUP USER ADDRESS EXCEL CARE CONTROL ICONS 1 again when the switch-on delay expires for the first time. It remains zero (only the controller can still activate STARTUP). Upper Left Switching Table The first ventilator stage switches on according to the table at the upper left of the previous diagram: The first stage switches on when: The second ventilator stage is off for 90 seconds.

Page 277 EXCEL CARE CONTROL ICONS APPENDIX B: STARTUP USER ADDRESS The second stage switches on when: The first ventilator stage is switched on for at least 60 seconds. The Time Program (or application program) requests the second stage. These two conditions guarantee that the switch from first to second stage occurs 30 seconds after the second stage is requested.

Page 278: Index
EXCEL CARE CONTROL ICONS INDEX cycle duration, 53 Cycle duration, 53 2PT, 47 2PT example, 48 Data Transfer (IDT), 41 datapoints methods of creating, 19 Datapoints, 19 Absolute, 22 Decimal Places, 44 Adaptation of factors, 190 Delay (Excel Web), 44 Adaptation of optimization, 160, 177, 178 Dewpoint (Excel Web), 45 Adapted heating curve, 151, 166...

Page 279 EXCEL CARE CONTROL ICONS INDEX Mathematical Editor (MAT), 126 MAX, 140 Maximum (MAX), 140 Factorial, 71 Merge (Excel Web), 141 File Manager window, 277 MIN, 142 Fixed applications (XFM), 71 Minimum (MIN), 142 Fixed Off Times, 53 Modulo, 143 Floating Limits and Alarm Suppression example, 253 Monoflop (Excel Web), 143 FLOW, 77 Multiplication, 145...

Page 280 INDEX EXCEL CARE CONTROL ICONS PID with ECO, 198 Starting/stopping the air conditioning, 182 POL, 138 Starting/stopping the heating, 151, 165 Polynomial Equation (POL), 138 Startup user address, 278 Positioning Signal Limitation example, 264 Subtract (DIF), 226 Power Demand Control XFMs, 81 Sum multiple analog input values, 22 Power Limit Setpoint, 104 SWI control icon, 24...

Page 281 EXCEL CARE CONTROL ICONS INDEX XFM 36-1/S/R Switching Behavior, 113 XFMs in custom control strategies, 72 XOR Table, 239 ZEB, 239 ZEB Cooling operation, 243 ZEB Dehumidification, 245 ZEB example, 245 ZEB Heating operation, 244 Year-round compensated space setpoint, 209 ZEB Mixed Air operation, 243 ZEB operation, 242 Zero Energy Band (ZEB), 239...

Page 282 Manufactured for and on behalf of the Environmental and Energy Solutions Division of Honeywell Technologies Sàrl, Rolle, Z.A. La Pièce 16, Switzerland by its Authorized Representative: Automation and Control Solutions Honeywell GmbH Böblinger Strasse 17 71101 Schönaich, Germany Phone +49 (0) 7031 637 01 +49 (0) 7031 637 740 http://ecc.emea.honeywell.com...

Honeywell EXCEL 5000 User Manual

Introduction

Applicable Literature

Control Icon Operation

Alphabetic Reference

Examples

Appendix A: Parameter List Description

Appendix B: Startup User Address

Index

Quick Links

Related Manuals for Honeywell EXCEL 5000

Summary of Contents for Honeywell EXCEL 5000

Table of Contents