Operating Manual EMGZ 321.EIP
19.10.2017
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7.4
Calibration Methods
The Calibrating procedure (setting the Gain), adjusts
the controller and load cells so that the display gives
you the actual tension value. 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. 18) 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.).
If the measuring roller can’t be calibrated with a weight (e.g. due to difficult
accessibility) the gain can alternatively be calculate with the FMS Calculator tool
and then entered in the corresponding parameters
Gain A and Gain B
(8.2 Amplifier
Parameter Group).
7.5
Calibration Procedure:
Refer to Fig. 19 “State diagram calibration procedure" to get an overview of the
calibration process.
1.
Press the
key for longer than 3 sec. until you enter the Calibration State.
2.
The display will show
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 the measuring roller. E.g. if two 250N sensors are used, enter 250N
for sensor A and 250N for sensor B further below.
6.
Press
to start the first gain factor calculation for sensor A.
7.
The display will show
8.
Enter the force that corresponds to your calibration weight with the
or
keys.
Fig. 18: Calibrating the
measuring amplifier C431011e
Adjust
Gain A1
NomForceA
1000.0
Calibra.
980.7 N
