Operation Manual EMGZ490A
30.08.2019
10
4
Calibration of the Measuring System
The system calibration can be performed in two ways:
A) over
the
web interface
(see chapter 8.3)
B)
directly in the PLC
4.1
Offset Compensation
With the Offset Compensation one can compensate the roller weight. This procedure is
always performed before the calibration. The force measuring roller should not be
loaded while the Offset Compensation is being done.
4.2
Calibration
The Calibrating procedure (setting the Gain), adjusts
the controller and load cells so that the display gives
you the actual tension value. There are two
methods of calibrating the system. The first method
uses a defined weight. The second method is based
on a calculation method in conjunction with the
FMS Calculator. This Calculator can be down loaded
from the FMS web page. FMS recommends using
the method with the weight (see Fig. 3) since it
delivers the most accurate results.
To set the Gain, load a rope with a defined weight
on the roller. The roller configuration must
correspond to the real material path in the machine
(wrap angle, distances between the rollers etc.).
Fig. 3: Calibrating the measuring
amplifier
C431011e
