Operating Manual CMGZ 622
68
20
Trouble Shooting
If the electronic unit detects an error, a digital output is activated. In addition, the error
state can be read by the interface.
20.1
General Trouble shooting
Error
Cause
Corrective action
„Alarm control error“
is displayed
The control error has
exceeded the tolerance
band set in parameter
Alarm limit error
Enlarge parameter
Alarm limit
error
or adjust PID control
parameters more accurate and
restart controlling (enable
controller again)
Required parameters
don’t show up
Parameter
Control mode
set wrong
Make parameter
Control mode
matching with your application
Display shows
not determinable
A function can’t be
performed at that time
(i.e. wiring error)
Check wiring, parametrization
and overall system shape
Feedback value of
Offset badly adjusted
Proceed again for offset
adjustment of channel n
channel n is > 0 even
though material is
loose
Current output is set to
4...20mA
Adjust channel parameter
config.
output
if a signal 0...20mA is
required
If current output shows
10...12mA: Jumper for
tension output is set
wrong
Set jumper for tension output of
channel n to 0...10V
Feedback value of
channel n is < 0 even
though material is
loose
Jumper for tension output
is set wrong
Set jumper for tension output of
channel n to 0...10V
Feedback value of
channel n is not stable
Cut off frequency of the
filters set too high
Adjust cut off frequency (ref. to
„9.9 Additional Settings“)
even though material
tension
Grounding (PE) not
connected
Connect grounding (PE)
doesn’t change
Electrical interference on
the cable to the force
sensor
Check connection of the shield.
Use one twisted pair for +signal
and –signal (ref. to „8.3
Mounting the force sensors“)
Feedback value of
Gain badly adjusted
Proceed again for sensor
calibration of channel n
channel n does not
correspond with the
Feedback signal wrong
scaled
Set parameter
scale instrument
to
an appropriate value
