RTM X42.Modbus Installation Manual and Operating Instructions
09.12.2019
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5.1
Offset Compensation of the Force Sensors
Offset compensation is used to compensate for the weight of the pulley on the force
sensor. The measuring system is practically “zeroed.”
Observe the following:
-
The force sensor may only be loaded with the pulley (do not place a wire)
-
Turn the lay-plate until the force sensor, for which the offset compensation is
performed, is vertically over the axis of rotation (12 o’clock position)
-
The force indicate due to the weight of the lay plate must be compensated in the
PLC so that the outputted value is “0.”
Figure 10: Lay-plate alignment
RTM_X42_Modbus_BA_Manual.ai
For the offset compensation of the force sensor for the core observe the operating
manual of the measuring amplifier connected to this force sensor.
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.
