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KERN 572 Operating Instructions Manual

Precision balance
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Operating instructions
Precision balance
KERN 572
Type T572-A
Version 1.1
2023-03
GB
KERN & Sohn GmbH
Ziegelei 1
72336 Balingen-Frommern
Germany
www.kern-sohn.com
+0049-[0]7433-9933-0
+0049-[0]7433-9933-149
T572-A-BA-e-2311
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  • Page 1 KERN & Sohn GmbH www.kern-sohn.com Ziegelei 1 +0049-[0]7433-9933-0 72336 Balingen-Frommern +0049-[0]7433-9933-149 Germany [email protected] Operating instructions Precision balance KERN 572 Type T572-A Version 1.1 2023-03 T572-A-BA-e-2311...

  • Page 2: Table Of Contents

    KERN 572 Version 1.1 2023-03 Operating instructions Precision balance Content Technical data ....................5 Declaration of conformity .................. 9 Appliance overview..................10 Components ....................10 Operating elements ..................11 3.2.1 Keyboard overview ..................11 3.2.2 Numerical input ....................12 3.2.3 Overview of displays ..................12 Basic Information (General) ................
  • Page 3 External adjustment with user-defined adjustment weight < caleud > ..20 7.8.2 Gravitational constant adjustment location < graadj > ......22 7.8.3 Gravitational constant place of location < grause > ........23 7.8.4 Basic Operation ....................24 Turn on/off ....................24 Simple weighing ..................24 Zeroing ......................
  • Page 4 Setup menu ....................52 Overview < setup > ..................52 13.3.1 Communication with peripheral devices via KUP connection ....57 14.1 KERN Communications Protocol (KERN Interface Protocol) ....58 14.2 Issue functions ..................59 Add-up mode < sum > ..................59 14.2.1 Data output after pressing the PRINT button <...

  • Page 5: Technical Data

    1 Technical data KERN 572-30 572-31 572-32 Item no./ Type T572-30-A T572-31-A T572-32-A Readability (d) 0.001 g 0.001 g 0.001 g Weighing range (max) 240 g 300 g 420 g Reproducibility 0.001 g 0.002 g 0.002 g Linearity ±0.003 g ±0.005 g...
  • Page 6 KERN 572-33 572-35 572-37 Item no./ Type T572-33-A T572-35-A T572-37-A Readability (d) 0.01 g 0.01 g 0.01 g Weighing range (max) 1 600 g 2 400 g 3 000 g Reproducibility 0.01 g 0.01 g 0.02 g Linearity ±0.03 g ±0.03 g...
  • Page 7 KERN 572-39 572-43 572-45 Item no./ Type T572-39-A T572-43-A T572-45-A Readability (d) 0.01 g 0.1 g 0.05 g Weighing range (max) 4 200 g 10 000 g 12 000 g Reproducibility 0.02 g 0.1 g 0.05 g Linearity ±0.05 g ±0.3 g...
  • Page 8 KERN 572-49 572-55 572-57 Item no./ Type T572-49-A T572-55-A T572-57-A Readability (d) 0.1 g 0.05 g 0.1 g Weighing range (max) 16 000 g 20 000 g 24 000 g Reproducibility 0.1 g 0.1 g 0.1 g Linearity ±0.3 g ±0.25 g...

  • Page 9: Declaration Of Conformity

    ** Smallest part weight for piece counting - under normal conditions: ➢ There are unsteady ambient conditions (draft, vibrations) ➢ The parts to be counted are being scattered Declaration of conformity The current EC/EU Conformity declaration can be found online in: www.kern-sohn.com/ce T572-A-BA-e-2311...

  • Page 10: Appliance Overview

    3 Appliance overview 3.1 Components Pos. Designation Pos. Designation Weighing plate Levelling screw Windshield Mains adapter connection Bubble level KUP connection (KERN Universal Port) Display Underfloor weighing device (depending on model) Keyboard T572-A-BA-e-2311...

  • Page 11: Operating Elements

    3.2 Operating elements 3.2.1 Keyboard overview Button Name Function in Operating Function in Menu mode ➢ Switch on/off (press ➢ Navigation key  button long time) ➢ Menu level back ON/OFF-but- ➢ Switch on/off the dis- ➢ Exit menu / back to play background illumi- weighing mode.

  • Page 12: Numerical Input

    3.2.2 Numerical input Button Designation Function Select cipher Confirm entry. Press button repeatedly for every Navigation key ➔ digit. Wait until the numeric input window extin- guishes. Reduce flashing cipher (0 – 9) Navigation key  Increase flashing cipher (0 – 9) Navigation key ...

  • Page 13: Basic Information (General)

    • The balance may only be used according to the described conditions. Other areas of use must be released by KERN in writing. 4.3 Warranty Warranty claims shall be voided in case: •...

  • Page 14: Monitoring Of Test Resources

    Information is available on KERN’s home page (www.kern-sohn.com) with regard to the monitoring of balance test substances and the test weights required for this. In KERN's accredited calibration laboratory test weights and balances may be calibrated (return to the na- tional standard) fast and at moderate cost.

  • Page 15: Unpacking, Installation And Commissioning

    Unpacking, Installation and Commissioning 7.1 Installation Site, Location of Use The balances are designed in a way that reliable weighing results are achieved in common conditions of use. You will work accurately and fast, if you select the right location for your balance. On the installation site observe the following: •...

  • Page 16: Unpacking And Checking

    Check, whether the voltage acceptance on the scales is set correctly. Do not connect the scales to the power mains unless the information on the scales (sticker) matches the local mains voltage. Only use KERN original mains adapter. Using other makes requires consent by KERN. Important: ➢...

  • Page 17: Rechargeable Battery Operation (Factory Option)

    7.5 Rechargeable battery operation (factory option) ATTENTION  The rechargeable battery and the battery match with each other. Only use the delivered mains adapter.  Do not use the balance during the loading process.  The rechargeable battery can only be replaced by the same or by a type recommended by the manufacturer.

  • Page 18: Connection Of Peripheral Devices

    Before connecting or disconnecting of additional devices (printer, PC) to the data in- terface, always disconnect the balance from the power supply. With your balance, only use accessories and peripheral devices by KERN, as they are ideally tuned to your balance.

  • Page 19: External Adjustment < Calext

    7.8.1 External adjustment < CalExt >  Press and hold the TARE and ON/OFF buttons simultane- ously to enter the setup menu.  Wait until the first menu item < Cal> is displayed.  Confirm by ➔ button, < CalExt> will be displayed. ...

  • Page 20: External Adjustment With User-Defined Adjustment Weight < Caleud

     Place the adjustment weight and confirm with ➔ button, < wait> followed by < reMvld> will be displayed.  Once < reMvld> is displayed, remove the adjustment weight.  After successful adjustment the balance automatically re- turns to weighing mode. In case of an adjustment error (e.g.
  • Page 21  Acknowledge selection by ➔ button. < Zero >, < Put ld > followed by the weight value of the adjust- ment weight to be placed will be displayed.  Place the adjustment weight and confirm with ➔ button, < wait> followed by < reMvld> will be displayed. ...

  • Page 22: Gravitational Constant Adjustment Location < Graadj

    7.8.3 Gravitational constant adjustment location < graadj >  Press and hold the TARE and ON/OFF buttons simultane- ously to enter the setup menu.  Wait until the first menu item < Cal> is displayed.  Confirm by ➔ button, < CalExt> will be displayed. ...

  • Page 23: Gravitational Constant Place Of Location < Grause

    7.8.4 Gravitational constant place of location < grause >  Press and hold the TARE and ON/OFF buttons simultane- ously to enter the setup menu.  Wait until the first menu item < Cal > is displayed.  Confirm by ➔ button, < CalExt > will be displayed. ...

  • Page 24: Basic Operation

    8 Basic Operation 8.1 Turn on/off Start-up:  Press the ON/OFF button. The display lights up and the balance carries out a self- test. Wait until the weight display appears The scales are now ready for operation using the last ac- tive application Switching off: ...

  • Page 25: Zeroing

    8.3 Zeroing In order to obtain optimal weighing results, reset to zero the balance before weighing. Zeroing is only possible in the range ± 2% Max. For values greater than ± 2% maximum the error message < zlimit> is dis- played ...

  • Page 26: Change-Over Button (Standard Settings)

    8.5 Change-over button (standard settings) The change-over button can be allocated with different functions. The following functions are set as per standard () in the different weighing applications: Short key pressing Long key pressing ➢ When pressed for first time: ➢...

  • Page 27: Switch-Over Weighing Unit

    8.5.1 Switch-over weighing unit As per standard the change-over button is set so that is it possible to switch-over between the weighing units by shortly pressing. Enable unit: The unit for quick selection can be determined when -button is shortly pressed for the first time. ...

  • Page 28: Display Gross Weight Value

    Enable another unit:  Select menu setting < unit> and confirm on ➔ button.  Wait until the display flashes.  Use the navigation keys  to select the weighing unit and confirm on ➔ button. For the required settings of an application unit (FFA, %, mol) selection, please see chap.

  • Page 29: Underfloor Weighing

    8.6 Underfloor weighing Objects unsuitable for placing on the weighing scale due to size or shape may be weighed with the help of the flush-mounted platform. Proceed as follows:  Switch off the balance  Open closing cover at the balance bottom. ...

  • Page 30: Operating Concept

    9 Operating concept From factory the balance is delivered with various applications (weighing, check weighing, counting). After the first start-up the balance is in the applica- tion. In the application menu (see chap.13.2.) however, you can define, selecting an ap- plication, in which mode the balance after switching-on has to continue working.
  • Page 31 According to the selected application in the application menu just appear the applica- tion-specific settings, so that you reach the target quickly without deviation. • Information about the application-specific settings you will find in the description of the respective application. •...

  • Page 32: Application

    10 Application How to carry out a simple weighing and taring, please refer to chap. 8.2 or 8.4. Further specific settings you will find in the following chapters. Shouldn’t the application already be enabled, select the menu setting < mode >  < weih >, see chap. 9 10.1 Application-specific settings Call up menu: Press the TARE key and hold it until <...

  • Page 33: Pre-Tare

    10.2 PRE-Tare 10.2.1 Take over the placed weight as PRE-TARE value Ptare actuAl  < < > >  Deposit weighing container Invoke menu setting < Ptare > and confirm by ➔ but-  ton.  To take over the placed weight as a PRE-TARE value, use the navigation keys ...

  • Page 34: Enter The Known Tare Weight Numerically

    10.2.2 Enter the known tare weight numerically < Ptare >  < manuAl >  Invoke menu setting < Ptare > and confirm by ➔ but- ton.  Using the navigation keys  select the setting Select < manuAl > and confirm by pressing the ➔ but- ton.

  • Page 35: Weighing Units

    10.4 Weighing Units 10.4.1 Setting weighing unit  Select menu setting < unit> and confirm on ➔ button.  Wait until the display flashes.  Use the navigation keys  to select the weighing unit and confirm on ➔ button. •...

  • Page 36: Weighing With Multiplication Factor Via The Application Unit

    10.4.2 Weighing with multiplication factor via the application unit Here you determine with which factor the weighing result (in gram) will be multiplied. By that way, e.g. a known error factor in the weight determination can be immediately taken into account. ...

  • Page 37: Molar Weighing Mode

    10.4.4 Molar weighing mode This function calculates the amount of a substance (in mol) based on the molar mass and the weight of the substance.  Select menu setting and confirm on ➔ button.  Use the navigation keys  to select the setting < mol > and confirm on ➔...

  • Page 38: Application

    11 Application Shouldn’t the application already be enabled, select the menu setting < mode >  < count >, see chap. 9 11.1 Application-specific settings Call up menu: Press the TARE key and hold it until < apcmen> is displayed. ...

  • Page 39: Using The Application

    11.2 Using the application 11.2.1 Piece counting Before the balance can count parts, it must know the average part weight (i.e. refe- rence). Proceed by putting on a certain number of the parts to be counted. The ba- lance determines the total weight and divides it by the number of parts, the so-called reference quantity.
  • Page 40 Reference quantity user-defined:  If necessary, put on and tare the weighing container.  Put on the desired quantity of reference pieces.  Invoke menu setting < ref > and confirm by ➔ button.  Use the navigation keys  to select the setting < free> and confirm on ➔...
  • Page 41  Enter piece weight, numerical input see chap. 3.2.2, the active digit flashes.  Acknowledge by ➔ button. The balance is now in piece counting mode counting all units on the weighing plate. 2. Parts counting  If necessary, put on and tare the weighing container. ...

  • Page 42: Target Counting

    11.2.2 Target counting The application variant allows weighing of goods within set toler- ance limits in keeping with a determined target quantity. Reaching the target quantity is indicated by an acoustic (if activated in menu) and an optic signal (tolerance marks). Optical signal: The tolerance marks provide the following information: Target quantity exceeds defined tolerance...
  • Page 43 Procedure: 1. Define target quantity and tolerances  Make sure that the scale is in counting mode and that an average piece weight has been defined (see chap. 11.2.1). If necessary, switch over with the button.  Use the navigation keys  to select the setting < tar- get >...
  • Page 44  Use the navigation keys  to select the setting < err- low> and confirm on ➔ button.  Use the navigation keys  to select the weighing unit and confirm on ➔ button.  The numeric input window appears. The active digit is flashing.

  • Page 45: Application < Checkweighing

    12 Application < Checkweighing > Shouldn’t the application already be enabled, select the menu setting < mode >  < check >, see chap. 9 12.1 Application-specific settings Call up menu: Press the TARE key and hold it until < apcmen > is displayed. ...

  • Page 46: Using The Application

    12.2 Using the application 12.2.1 Target weighing The application variant allows weighing of goods within set tolerance limits in keeping with a determined target weight. Reaching the target weight is indicated by an acoustic (if activated in menu) and an optic signal (tolerance marks).
  • Page 47 Procedure: 1. Define target weight and tolerances  Use the navigation keys  to select the setting < target > and confirm with ➔ button. < value > is displayed.  Confirm on ➔ button, the numeric input window appears. The active digit is flashing.
  • Page 48  Use the navigation keys  to select the setting < err- low> and confirm on ➔ button.  Use the navigation keys  to select the weighing unit and confirm on ➔ button.  The numeric input window appears. The active digit is flashing.

  • Page 49: Checkweighing

    12.2.2 Checkweighing With the application variant you can check if the weighing good is within a predefined tolerance range. When limit values are exceeded below or above, an acoustic signal (if enabled in menu) will sound and an optic signal (tolerance marks) will be displayed Optic signal: The tolerance marks provide the following information: Weighed-in goods exceed predefined tolerance...
  • Page 50  Use the navigation keys  to select setting < limlow >.  Press ➔ button to confirm, the numeric input window for entering the lower limit value will appear. The active digit is flashing.  Enter lower limit value (numerical input see chap. 3.2.2) and confirm the entry.

  • Page 51: Menu

    13 Menu 13.1 Navigation in the menu Call up menu: Application menu Setup menu Press the TARE button and keep it Press the TARE and ON/OFF button at pressed until the first menu item will be the same time and keep them pressed displayed until the first menu item will be displayed Select and adjust parameters:...

  • Page 52: Setup Menu

    13.3 Setup menu In the setup menu you have the possibility to adapt the behaviour of the balance to your requirements (e.g. environmental conditions, especial weighing processes). These settings are global and do not depend on the selected application (with excep- tion of: ).
  • Page 53 Print intfce Rs232 RS 232 interface* Data output USB interface* USB-d *only in connection with KUP interface Switch on / off add-up mode, see chap. 14.2.1 prmode trig On, off manual Data output by pressing the PRINT button, see chap. 14.2.2 autopr On, off Automatic data output with stable and...
  • Page 54 BEEPER keys Switch on / off acoustic signal by pressing button Acoustic signal Check Acoustic signal off Slow Slow ch-ok Standard Fast Fast Cont. Continuous Acoustic signal off Slow Slow ch-lo Standard Fast Fast Cont. Continuous Acoustic signal off Slow Slow ch-hi Standard...
  • Page 55 buttons Standard settings, see default chap. 8.5 Key allocation Button disabled Set weighing unit, see unit chap. 10.4.1 Select weighing application, mode see chap. 9 Execute HOLD function, s.Kap. 10.3 hold *only for the application Open PRE-Tare settings, see chap. 10.2 spush ptare *only for the applications...
  • Page 56 tarerg 100% Definition max. taring range, selectable 10% - 100%. Numeri- Taring range  cal input see chap. 3.2.2 ztrack Automatic zero tracking [ <3d ] Zerotracking In the event that small quantities are removed or added to the material to be weighed, incorrect weighing re- sults can be displayed due to the “stability compensa- tion“.

  • Page 57: Communication With Peripheral Devices Via Kup Connection

    Issue may be made to a printer, PC or check displays. In reverse order, control or- ders and data inputs may be made via the connected devices. The balances are equipped with a KUP connection (KERN Universal Port) as per standard.

  • Page 58: Kern Communications Protocol (Kern Interface Protocol)

    14.1 KERN Communications Protocol (KERN Interface Protocol) KCP is a standardized set of interface orders for KERN balances, which allows many parameters and device functions to be called up and controlled. KERN devices that have KCP can use it to connect easily to computers, industrial control systems and other digital systems.

  • Page 59: Issue Functions

    14.2 Issue functions 14.2.1 Add-up mode < sum > With this function the individual weighing values are added into the summation memory by pressing a button and edited when an optional printer is connected. Activate function: In Setup menu invoke the menu setting < Print >  < sum > and confirm ...
  • Page 60 Sample log (KERN YKB-01N): Menu setting < prmode >  < format >  < short > First weighing Second weighing Third weighing Number of weighings/ Total Sample log (KERN YKB-01N): Menu setting < prmode >  < weight  < sglprt ...

  • Page 61: Data Output After Pressing The Print Button < Manual

    14.2.2 Data output after pressing the PRINT button < manual > Activate function:  In Setup menu invoke the menu setting < print >  < prmode  < > trig > and confirm with ➔ button.  For a manual data output select the menu setting < manual > with the naviga- tion keys ...

  • Page 62: Automatic Data Output < Auto

    14.2.3 Automatic data output < auto > Data output happens automatically without having to press the PRINT button as soon as the corresponding output condition has been met, dependent on the setting in the menu. Enable function and set the output condition: In Setup menu invoke the menu setting <...

  • Page 63: Data Format

    Sample log (KERN YKB-01N): 14.3 Data format In the setup menu call up the menu setting < print >  < prmode>   and confirm on ➔ button. Use the navigation keys  to select the menu setting < format > and con- ...

  • Page 64: Servicing, Maintenance, Disposal

    Spilled weighing goods must be removed immediately. 15.2 Servicing, maintenance  The appliance may only be opened by trained service technicians who are autho- rized by KERN.  Before opening, disconnect from power supply. 15.3 Disposal Disposal of packaging and appliance must be carried out by operator according to valid national or regional law of the location where the appliance is used.

  • Page 65: Instant Help For Troubleshooting

    16 Instant help for troubleshooting In case of an error in the program process, briefly turn off the balance and disconnect from power supply. The weighing process must then be restarted from the beginning. Fault Possible cause • The balance is not switched on. The weight display does not glow.

  • Page 66: Error Messages

    17 Error messages Error message Explication zlimit Zero setting range exceeded UnderZ Zero setting range not achieved instab Load instable wrong Adjustment error Underload Overload Lo Bat Capacity of batteries / rechargeable batteries ex- hausted T572-A-BA-e-2311...

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