RTM x42.IO.Modbus Installation Manual and Operating Instructions
03.02.2020
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via the amplifier, please follow the instruction of the operating manual of the measuring
amplifier.
5.2
Force Sensor Calibration
Calibration is used for matching the measuring amplifier with the force sensor. The so-
called gain factor is determined. After calibration, the displayed force corresponds to
the force effectively affecting the material. Two calibration methods are possible; one
computational method and calibration with a defined weight force. The defined weight-
based calibration method is simple and delivers more accurate results as it replicates
the material profile and considers the actual circumstances in the machine.
Figure 12: Application of a defined weight force to the force sensor
RTM_X42_Modbus_BA_Manual.ai
To adjust the gain, load the measuring roller with a rope or wire with a defined weight
attached to its end. The cable must correspond to the real material course in the
machine (wrap angle, distances between the rollers, etc.). The displayed/determined
digit value must now be assigned in the PLC to the weight force corresponding to the
calibration weight.
Please note that the force sensor which is to be calibrated shall be on the 12 o'clock
position.
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Press and hold the button "Cal" for min. 3 sec.
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Channel number and Gain is displayed
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Select the desired number by pressing the < or > buttons
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Press confirmation button to select the desired channel
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The display shows "NomForce" and respective channel number. Enter the nominal
force in N of the force sensor. This value can be found on product label of the sensor.
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Adjust the value with the Change button and press the confirmation button.
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"Calibra" is displayed now. Here you enter the defined weight in the displayed unit
that is attached to the rope or wire on the force sensor.
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Adjust the value with the Change button and press the confirmation button.
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The calibration start and shows "Calibra complete" if it is finished.
