Operating Manual EMGZ 321
12.03.2020
42
10
Trouble Shooting
Error
Cause
Corrective action
Output value off – it is
far from the expected
value
Offset badly adjusted Proceed again for offset
compensation procedure.
Wrong nominal force
entered.
Forgotten to enter the
force of sensor A or B.
Proceed to 6.5 “Calibration
Procedure” and enter the correct
value. E.g. if you have a roller
with two 250N sensors, enter
250 for sensor A and 250N for
sensor B.
Wrong Gain value
determine
Repeat calibration procedure as
described in paragraph 6.5.
If gain switching is
used, possibly wrong
gain chosen
Switch the dig. input used for
gain switching (see paragraph
4.6)
Sensor A or B shows
>>0.1 even though
material is loose
Current output is set
to 4...20mA
Set the correct output mode in
the Output Parameter Group, if a
signal 0...20mA is required
Output value of sensor
A or B is jittery
Cut off frequency of
the filters set too high
Adjust cut off frequency (ref. to
„7.4 Outputs Parameter Group“)
Output value of sensor
A or B is not stable
Grounding problem.
(PE) badly connected
Check ground wire and able
shield for proper contact.
Electrical interference
on the cable to the
force sensor
Check connection of the shield.
Use one twisted pair for +signal
and –signal.
Relay outputs behave
different as expected
Limit values wrongly
parametrised.
Check the parameter
LimCond
and
Limit 1
and
2
for plausibility.
Set parameter to appropriate
values.
Display is dark and the
amplifier does not
respond to key
commands.
No supply voltage
Check your wiring (ref. to
paragraphs 4.3 and 4.4).
Amplifier does not
respond to key
commands.
Electronic boards or
key foil defective.
Contact service department of
FMS
