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Siemens SIMATIC S7-1500 Manual

Analog input module ai 4xu/i/rtd/tc st (6es7531-7qd00-0ab0)
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  • Page 2 ___________________ Preface ___________________ Guide to documentation ___________________ SIMATIC Product overview ___________________ Wiring S7-1500/ET 200MP Analog Input Module ___________________ AI 4xU/I/RTD/TC ST Parameters/address space (6ES7531-7QD00-0AB0) ___________________ Interrupts/diagnostics alarms Manual ___________________ Technical specifications ___________________ Dimension drawing ___________________ Parameter data records ___________________ Representation of analog values 09/2016 A5E32366209-AC...
  • Page 3 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.

  • Page 4: Preface

    Purpose of the documentation This manual supplements the system manual S7-1500/ET 200MP (https://support.industry.siemens.com/cs/ww/en/view/59191792). Functions that relate in general to the systems are described in this system manual. The information provided in this manual and in the system/function manuals supports you in commissioning the systems.
  • Page 5 In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions only form one element of such a concept. Customer is responsible to prevent unauthorized access to its plants, systems, machines and networks.

  • Page 6: Table Of Contents

    Table of contents Preface ..............................4 Guide to documentation .......................... 7 Product overview ..........................11 Properties ..........................11 Wiring ..............................14 Wiring and block diagrams ..................... 14 Parameters/address space ........................23 Measurement types and ranges .................... 23 Parameters ..........................26 Declaration of parameters ......................

  • Page 7: Guide To Documentation

    Guide to documentation The documentation for the SIMATIC S7-1500 automation system, the CPU 1516pro-2 PN based on SIMATIC S7-1500 and the SIMATIC ET 200MP distributed I/O system is arranged into three areas. This arrangement enables you to access the specific content you require.
  • Page 8 You can download the product information free of charge from the Internet (https://support.industry.siemens.com/cs/us/en/view/68052815). Manual Collection S7-1500/ET 200MP The Manual Collection contains the complete documentation on the SIMATIC S7-1500 automation system and the ET 200MP distributed I/O system gathered together in one file. You can find the Manual Collection on the Internet (https://support.industry.siemens.com/cs/ww/en/view/86140384).
  • Page 9 ● Manuals, characteristics, operating manuals, certificates ● Product master data You can find "mySupport" - CAx data on the Internet (http://support.industry.siemens.com/my/ww/en/CAxOnline). Application examples The application examples support you with various tools and examples for solving your automation tasks. Solutions are shown in interplay with multiple components in the system - separated from the focus on individual products.
  • Page 10 You can find the SIMATIC Automation Tool on the Internet (https://support.industry.siemens.com/cs/ww/en/view/98161300). PRONETA With SIEMENS PRONETA (PROFINET network analysis), you analyze the PROFINET network during commissioning. PRONETA features two core functions: ● The topology overview independently scans PROFINET and all connected components.

  • Page 11: Product Overview

    Product overview Properties Article number 6ES7531-7QD00-0AB0 View of the module Figure 2-1 View of the AI 4xU/I/RTD/TC ST module Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...
  • Page 12 Product overview 2.1 Properties Properties The module has the following technical properties: ● 4 analog inputs ● Resolution 16 bits including sign ● Voltage measurement type can be set per channel ● Current measurement type can be set per channel ●...
  • Page 13 ● Power supply element (push-in terminals) ● Labeling strips ● U connector ● Universal front door You can find additional information on accessories in the system manual System manual S7-1500/ET 200MP (https://support.industry.siemens.com/cs/ww/en/view/59191792) Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...

  • Page 14: Wiring

    (https://support.industry.siemens.com/cs/ww/en/view/59191792). You can find additional information on compensating the reference junction temperature in the function manual Analog value processing (http://support.automation.siemens.com/WW/view/en/67989094), the structure of a data record in the section Structure of a data record for dynamic reference temperature (Page 61).
  • Page 15 Wiring 3.1 Wiring and block diagrams Pin assignment for the power supply element The power supply element is plugged onto the front connector for powering the analog module. Wire the supply voltage to terminals 41 (L+) and 43 (M). Figure 3-1 Power supply element wiring Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...
  • Page 16 Wiring 3.1 Wiring and block diagrams Connection: Voltage measurement The example in the following figure shows the pin assignment for voltage measurement. ① Analog-to-digital converter (ADC) Channel or 4 x channel status (green/red) ② Backplane bus interface Status display LED (green) ③...
  • Page 17 Wiring 3.1 Wiring and block diagrams Connection: 4-wire transmitters for current measurement The example in the following figure shows the pin assignment for current measurement with 4-wire transmitters. ① Wiring 4-wire transmitter Channel or 4 x channel status (green/red) ② Analog-to-digital converter (ADC) Status display LED (green) ③...
  • Page 18 Wiring 3.1 Wiring and block diagrams Connection: 2-wire transmitters for current measurement The example in the following figure shows the pin assignment for current measurement with 2-wire transmitters. ① Wiring 2-wire transmitter Channel or 4 x channel status (green/red) ② Analog-to-digital converter (ADC) Status display LED (green) ③...
  • Page 19 Wiring 3.1 Wiring and block diagrams Connection: 2-wire connection of resistance-based sensors or thermal resistors (RTD) The example in the figure below shows the pin assignment for 2-wire connection of resistance sensors or thermal resistors. ① 2-wire connection Channel or 4 x channel status (green/red) ②...
  • Page 20 Wiring 3.1 Wiring and block diagrams Connection: 3- and 4-wire connection of resistance sensors or thermal resistors (RTD) The example in the figure below shows the pin assignment for 3- and 4-wire connection of resistance-based sensors or thermal resistors. ① 4-wire connection Channel or 4 x channel status (green/red) ②...
  • Page 21 Wiring 3.1 Wiring and block diagrams Connection: Thermocouples for external/internal compensation The figure below shows an example of the pin assignment for thermocouples for external or internal compensation. ① Wiring of a thermocouple for internal compensation Channel or 4 x channel status (green/red) ②...
  • Page 22 Wiring 3.1 Wiring and block diagrams Connection: Grounded thermocouples for internal compensation The following figure shows an example of the pin assignment for grounded thermocouples for internal compensation. ① Wiring of a thermocouple (grounded) for internal Channel or 4 x channel status (green/red) compensation ②...

  • Page 23: Parameters/Address Space

    Parameters/address space Measurement types and ranges Introduction The module is set to voltage measurement type with measuring range ±10 V by default. You need to reassign the module parameters with STEP 7 if you want to use a different measurement type or range. Deactivate the input if it is not going to be used.
  • Page 24 Parameters/address space 4.1 Measurement types and ranges Measurement type Measuring range Representation of analog values Thermal resistor RTD PT100 Standard/Climate (3-wire connection) PT200 Standard/Climate (4-wire connection) PT500 Standard/Climate PT1000 Standard/Climate Ni100 Standard/Climate Ni1000 Standard/Climate LG-Ni1000 Stand- ard/Climatic Thermocouple (TC) Type B See Representation of analog values for thermocouples (Page 70) Type E...
  • Page 25 Parameters/address space 4.1 Measurement types and ranges Special features for the use of PTC resistors PTC resistors are suitable for temperature monitoring of electrical devices, such as motors, drives, and transformers. Use Type A PTC resistors (PTC thermistor) in accordance with DIN/VDE 0660, part 302. In doing so, follow these steps: 1.

  • Page 26: Parameters

    Parameters/address space 4.2 Parameters Special features of the measured value acquisition with PTC resistors If faults occur (for example supply voltage L+ missing) that make it impossible to acquire measured values with PTC resistors, the corresponding channels (IB x/IB x+1) report overflow (7FFF ).
  • Page 27 Parameters/address space 4.2 Parameters Parameters Range of values Default Reconfigu- Scope with configuration software, e.g., setting ration in STEP 7 (TIA Portal) Integrated in the GSD file hardware catalog PROFIBUS DP STEP 7, as of V13 GSD file PROFINET IO Measuring See section Meas- Voltage...
  • Page 28 Parameters/address space 4.2 Parameters Parameters Range of values Default Reconfigu- Scope with configuration software, e.g., setting ration in STEP 7 (TIA Portal) Integrated in the GSD file hardware catalog PROFIBUS DP STEP 7, as of V13 GSD file PROFINET IO Hardware interrupts Yes/No Channel...

  • Page 29: Declaration Of Parameters

    Parameters/address space 4.3 Declaration of parameters Declaration of parameters No supply voltage L+ Enabling of the diagnostics, with missing or too little supply voltage L+. Overflow Enabling of the diagnostics if the measured value violates the high limit. Underflow Enabling of the diagnostics when the measured value falls below the underrange or for voltage measurement ranges of ±...
  • Page 30 Parameters/address space 4.3 Declaration of parameters Interference frequency suppression At analog input modules, this suppresses interference caused by the frequency of AC mains. The frequency of AC network may corrupt measurements, particularly in the low voltage ranges, and when thermocouples are being used. For this parameter, the user defines the mains frequency prevailing on his system.
  • Page 31 Parameters/address space 4.3 Declaration of parameters Reference junction The following settings can be configured for the reference junction parameter: Table 4- 3 Possible parameter assignments for the reference junction parameter TC Setting Description Fixed reference temperature The reference junction temperature is configured and stored in the module as a fixed value.

  • Page 32: Address Space

    Parameters/address space 4.4 Address space Address space The module can be configured in various ways in STEP 7. Depending on the configuration, additional/different addresses are assigned in the process image of the inputs. Configuration options of AI 4xU/I/RTD/TC ST You can configure the module with STEP 7 (TIA Portal) or with a GSD file. When you configure the module by means of the GSD file, the configurations are available under different abbreviations/module names.
  • Page 33 Parameters/address space 4.4 Address space Address space for configuration as 1 x 4-channel AI 4xU/I/RTD/TC ST QI The figure below shows the address space assignment for configuration as a 1 x 4-channel module. You can freely assign the start address for the module. The addresses of the channels are derived from the start address.
  • Page 34 Parameters/address space 4.4 Address space Address space for configuration as 4 x 1-channel AI 4xU/I/RTD/TC ST S QI For the configuration as a 4 x 1-channel module, the channels of the module are divided into multiple submodules. The submodules can be assigned to different IO controllers when the module is used in a shared device.
  • Page 35 Parameters/address space 4.4 Address space Value status (Quality Information, QI) The meaning of the value status depends on the submodule on which it occurs. For the 1st submodule (= basic submodule), the value status 0 indicates that the value is incorrect.
  • Page 36 Address space for configuration as 1 x 4-channel AI 4xU/I/RTD/TC ST MSI with value status Reference You can find information on the Shared Input/Output (MSI/MSO) function in the section Module-Internal Shared Input/Output (MSI/MSO) of the PROFINET with STEP 7 V13 (https://support.industry.siemens.com/cs/ww/en/view/49948856) function manual. Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...

  • Page 37: Interrupts/Diagnostics Alarms

    Interrupts/diagnostics alarms Status and error displays LED displays The figure below shows the LED displays (status and error displays) of AI 4xU/I/RTD/TC ST. Figure 5-1 LED displays of the module AI 4xU/I/RTD/TC ST Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...
  • Page 38 Interrupts/diagnostics alarms 5.1 Status and error displays Meaning of the LED displays The following tables explain the meaning of the status and error displays. Corrective measures for diagnostics alarms can be found in the section Diagnostics alarms (Page 41). LED RUN/ERROR Table 5- 1 RUN/ERROR status and error displays LEDs...

  • Page 39: Interrupts

    Interrupts/diagnostics alarms 5.2 Interrupts Interrupts Analog input module AI 4xU/I/RTD/TC ST supports the following diagnostic and hardware interrupts. You can find detailed information on the event in the error organization block with the "RALRM" instruction (read additional interrupt info) and in the STEP 7 online help. Diagnostic interrupt The module generates a diagnostic interrupt at the following events: ●...
  • Page 40 Interrupts/diagnostics alarms 5.2 Interrupts Reaction when reaching limits 1 and 2 at the same time If the two high limits 1 and 2 are reached at the same time, the module always signals the hardware interrupt for high limit 1 first. The configured value for high limit 2 is irrelevant. After processing the hardware interrupt for high limit 1, the module triggers the hardware interrupt for high limit 2.

  • Page 41: Diagnostics Alarms

    Interrupts/diagnostics alarms 5.3 Diagnostics alarms Diagnostics alarms A diagnostics alarm is generated and the ERROR LED flashes on the module for each diagnostics event. The diagnostics alarms can be read out in the diagnostics buffer of the CPU, for example. You can evaluate the error codes with the user program. Table 5- 5 Diagnostics alarms, their meaning and corrective measures Diagnostics alarm...

  • Page 42: Technical Specifications

    Technical specifications Technical specifications of the AI 4xU/I/RTD/TC ST 6ES7531-7QD00-0AB0 General information Product type designation AI 4xU/I/RTD/TC ST Hardware functional status FS01 Firmware version V1.0.0 FW update possible • Product function I&M data Yes; I&M0 to I&M3 Scalable measuring range Scalable measured values Measuring range adjustment Engineering with...
  • Page 43 Technical specifications 6ES7531-7QD00-0AB0 Power loss Power loss, typ. 2.3 W Analog inputs Number of analog inputs For current measurement • For voltage measurement • For resistance/resistance thermometer meas- • urement For thermocouple measurement • Permissible input voltage for voltage input (de- 28.8 V struction limit), max.
  • Page 44 Technical specifications 6ES7531-7QD00-0AB0 Input ranges (rated values), currents 0 mA to 20 mA Input resistance (0 mA to 20 mA) 25 Ω; plus approx. 42 ohm for overvoltage protec- tion by PTC -20 mA to +20 mA Input resistance (-20 mA to +20 mA) 25 Ω;...
  • Page 45 Technical specifications 6ES7531-7QD00-0AB0 Ni 1000 Yes; Standard/Climate Input resistance (Ni 1000) 10 MΩ Ni 1000 according to GOST LG-Ni 1000 Yes; Standard/Climate Input resistance (LG-Ni 1000) 10 MΩ Ni 120 Ni 120 according to GOST Ni 200 Ni 200 according to GOST Ni 500 Ni 500 according to GOST Pt 10...
  • Page 46 Technical specifications 6ES7531-7QD00-0AB0 Thermocouple (TC) Temperature compensation Configurable • Internal temperature compensation • External temperature compensation via RTD • Yes, fixed value can be set Compensation for 0 °C reference point tem- • perature Reference channel of the module • Cable length shielded, max.
  • Page 47 Technical specifications 6ES7531-7QD00-0AB0 Errors/accuracies Linearity error (in relation to input range), (+/-) 0.02% Temperature error (in relation to input range), (+/-) 0.005%/K; for TC typ. T 0.02 +/- %/K Crosstalk between the inputs, max. -80 dB Repeat accuracy in settled state at 25 °C (in rela- 0.02% tion to input range), (+/-) Temperature errors of internal compensation...
  • Page 48 Technical specifications 6ES7531-7QD00-0AB0 Diagnostics alarms Monitoring of supply voltage Wire break Yes; only for 1 ... 5 V, 4 ... 20 mA, TC, R and Overflow/underflow Diagnostics display LED RUN LED Yes; green LED ERROR LED Yes; red LED Monitoring of supply voltage (PWR LED) Yes;...
  • Page 49 Technical specifications 6ES7531-7QD00-0AB0 Dimensions Width 25 mm Height 147 mm Depth 129 mm Weights Weight, approx. 210 g Miscellaneous Note: Package includes 40-pin push-in front connector Additional basic error and noise for integration time = 2.5 ms: Voltage: ±250 mV (±0.02%), ±80 mV (±0.05%), ±50 mV (±0.05%);...

  • Page 50: Dimension Drawing

    Dimension drawing The dimension drawing of the module on the mounting rail, as well as a dimension drawing with open front panel are provided in the appendix. Always adhere to the specified dimensions for installation in cabinets, control rooms, etc. Figure A-1 Dimension drawing of the AI 4xU/I/RTD/TC ST module Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0)
  • Page 51 Dimension drawing Figure A-2 Dimension drawing of the AI 4xU/I/RTD/TC ST module, side view with open front panel Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...

  • Page 52: Parameter Data Records

    Parameter data records Parameter assignment and structure of the parameter data records The data records of the module have an identical structure, regardless of whether you configure the module with PROFIBUS DP or PROFINET IO. Dependencies for configuration with GSD file When configuring the module with a GSD file, remember that the settings of some parameters are dependent on each other.
  • Page 53 1 for the read back parameter data records 0 and 1. You can find more information in the Interrupts section of the PROFIBUS DP interface module product manual on the Internet (http://support.automation.siemens.com/WW/view/en/78324181). Assignment of data record and channel For the configuration as a 1 x 4-channel module, the parameters are located in data records 0 to 3 and are assigned as follows: ●...
  • Page 54 Parameter data records B.1 Parameter assignment and structure of the parameter data records Data record structure The example in the following figure shows the structure of data record 0 for channel 0. The structure of channels 1 to 3 is identical. The values in byte 0 and byte 1 are fixed and may not be changed.
  • Page 55 Parameter data records B.1 Parameter assignment and structure of the parameter data records Figure B-2 Structure of data record 0: Bytes 7 to 27 Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...
  • Page 56 Parameter data records B.1 Parameter assignment and structure of the parameter data records Codes for measurement types The following table lists all measurement types of the analog input module along with their codes. Enter these codes at byte 2 of the data record for the corresponding channel (see the figure Structure of data record 0: Bytes 7 to 27).
  • Page 57 Parameter data records B.1 Parameter assignment and structure of the parameter data records Codes for measuring ranges The following table lists all measuring ranges of the analog input module along with their codes. Enter these codes accordingly at byte 3 of the data record for the corresponding channel (see the figure Structure of data record 0: Bytes 7 to 27).
  • Page 58 Parameter data records B.1 Parameter assignment and structure of the parameter data records Thermal resistor Pt100 climatic 0000 0000 Ni100 climatic 0000 0001 Pt100 standard 0000 0010 Ni100 standard 0000 0011 Pt500 standard 0000 0100 Pt1000 standard 0000 0101 Ni1000 standard 0000 0110 Pt200 Climatic 0000 0111...
  • Page 59 Parameter data records B.1 Parameter assignment and structure of the parameter data records Valid values for fixed reference temperatures The values that you can set for fixed reference temperatures must be in the valid range of values. The resolution is a tenth of a degree. Table B- 5 Valid values for fixed reference temperatures Temperature unit...
  • Page 60 Parameter data records B.1 Parameter assignment and structure of the parameter data records Table B- 9 Limits for thermocouples type K, N, R, and S Thermocouple Type K Type N Types R, S °C °F °C °F °C °F 16219 29515 18951 15499...

  • Page 61: Structure Of A Data Record For Dynamic Reference Temperature

    Parameter data records B.2 Structure of a data record for dynamic reference temperature Structure of a data record for dynamic reference temperature The WRREC instruction is used to transfer the reference junction temperature via data record 192 to data record 195 to the module. The description of the WRREC instruction can be found in the online help from STEP 7.
  • Page 62 3214 to 7FF8 Additional information For more information on compensation of the reference junction temperature via data record refer to the Analog value processing (http://support.automation.siemens.com/WW/view/en/67989094) function manual in the internet. Analog Input Module AI 4xU/I/RTD/TC ST (6ES7531-7QD00-0AB0) Manual, 09/2016, A5E32366209-AC...

  • Page 63: Representation Of Analog Values

    Representation of analog values Introduction This section shows the analog values for all measuring ranges supported by the AI 4xU/I/RTD/TC ST analog module. Measured value resolution Each analog value is written left aligned to the tags. The bits marked with "x" are set to "0". Note This resolution does not apply to temperature values.

  • Page 64: Representation Of Input Ranges

    Representation of analog values C.1 Representation of input ranges Representation of input ranges The tables below set out the digitized representation of the input ranges by bipolar and unipolar input ranges. The resolution is 16 bits. Table C- 2 Bipolar input ranges Dec.

  • Page 65: Representation Of Analog Values In Voltage Measuring Ranges

    Representation of analog values C.2 Representation of analog values in voltage measuring ranges Representation of analog values in voltage measuring ranges The following tables list the decimal and hexadecimal values (codes) of the possible voltage measuring ranges. Table C- 4 Voltage measuring ranges ±10 V, ±5 V, ±2.5 V, ±1 V, Values Voltage measuring range...

  • Page 66: Representation Of Analog Values In The Current Measuring Ranges

    Representation of analog values C.3 Representation of analog values in the current measuring ranges Table C- 6 Voltage measuring range 1 V to 5 V Values Voltage measuring range Range 1 V to 5 V 32767 7FFF >5.704 V Overflow 32511 7EFF 5.704 V...

  • Page 67: Representation Of The Analog Values Of Resistance-Based Sensors/Resistance Thermometers

    Representation of analog values C.4 Representation of the analog values of resistance-based sensors/resistance thermometers Table C- 8 Current measuring ranges 0 to 20 mA and 4 to 20 mA Values Current measuring range 0 mA to 20 mA 4 mA to 20 mA 32767 7FFF >23.52 mA...
  • Page 68 Representation of analog values C.4 Representation of the analog values of resistance-based sensors/resistance thermometers The following tables list the decimal and hexadecimal values (codes) of the supported resistance thermometers. Table C- 10 Resistance thermometers Pt 100, Pt 200, Pt 500 and Pt 1000 Standard Pt x00 Values Pt x00...
  • Page 69 Representation of analog values C.4 Representation of the analog values of resistance-based sensors/resistance thermometers Table C- 12 Thermal resistors Ni 100, Ni 1000, LG-Ni 1000 Standard Ni x00 Values Ni x00 Values Ni x00 Values Range standard Standard Standard in °C in °F in K (1 digit =...

  • Page 70: Representation Of Analog Values For Thermocouples

    Representation of analog values C.5 Representation of analog values for thermocouples Representation of analog values for thermocouples The following tables list the decimal and hexadecimal values (codes) of the supported thermocouples. Table C- 14 Thermocouple type B Type B Values Type B Values Type B...
  • Page 71 Representation of analog values C.5 Representation of analog values for thermocouples Table C- 16 Thermocouple type J Type J Values Type J Values Type J Values Range in °C in °F in K > 1450.0 32767 7FFF > 2642.0 32767 7FFF >...
  • Page 72 Representation of analog values C.5 Representation of analog values for thermocouples Table C- 19 Thermocouple type R and S Type R, S Values Type R, S Values Types R, Values Range in °C in °F S in K > 2019.0 32767 7FFF >...

  • Page 73: Measured Values For Wire Break Diagnostics

    Representation of analog values C.6 Measured values for wire break diagnostics Measured values for wire break diagnostics Measured values on diagnostics event "wire break", dependent on diagnostics enables Error events initiate a diagnostics entry and trigger a diagnostics interrupt if configured accordingly.

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