Operating Instruction EMGZ491.EIP
17.03.2022
11
5
Calibration of the Measuring System
There are two options for performing the calibration:
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Via the web browser (see 9)
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Directly in PLC
5.1
Offset Compensation
Using offset calibration, the weight of the measuring roller and the roller bearings is
compensated and the measuring system “zeroed”.
Offset compensation must always be executed prior to the actual calibration. The
measuring roller must not be loaded during the procedure.
5.2
Calibration (Adjusting the Gain Factor)
Calibration is used for matching the gain factor with the force sensors. After calibration,
the displayed force corresponds to the force effectively affecting the material. Two
calibration methods are available. The first calibration method described here uses a
defined weight. There is also a calculation method for the gain. The weight-based
calibration method is simple and delivers more accurate results as it replicates the
material profile (see the figure below) and considers the actual circumstances in the
machine.
Figure 6: Replication of the material profile using a defined weight
Tension_Control_Solutions.ai
