Operating Manual EMGZ 321
12.03.2020
20
6.4
Calibration Methods
The Calibrating procedure (setting the Gain), adjusts
the controller and load cells so that the display gives
you the actual tension value. The method uses a
defined weight. FMS recommends using the method
with the weight (see Fig. 10) since it delivers the most
accurate results.
To set the Gain, load a rope with a defined weight on
the measuring roller. The roller configuration must
correspond to the real material path in the machine
(wrap angle, distances between the rollers etc.).
6.5
Calibration Procedure:
The Calibration Procedure calculates the value for the amplifier gain. The procedure
requests inputs such as the system force and the force corresponding to the
calibration weight. The here determined values are stored in the parameter
Gain
and
NomForce
in
the Amplifier Parameter Group. Refer also to Fig. 11 “State
diagram calibration procedure”.
1.
Press the
key for longer than 3 sec. until you enter the Calibration State.
The display will show:
2.
Load the rope with the defined calibration weight as close as possible to the
roller side you want to calibrate first (e.g. left side). The path of the rope must
correspond to the real configuration in the machine (wrap angle, distance of the
rollers etc.).
3.
Press
to enter the nominal force of the force sensor. The force is indicated
on the label of the installed force sensor.
4.
The display will indicate
5.
Change the force value with the
or
keys
. Enter the force that has been
installed in this side of the measuring roller.
Fig. 10: Calibrating the measuring ampl
Adjust
Gain A1
NomForceA
1000.0 N
