FMS Fault Correction
Feedback (E)
Aids
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E17
Fault
161
Only with "flying curve switching” option
162
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nd
163
With the flying curve switching option the 2 monitoring band is replaced by
164
running direction monitoring for up to 30 seconds after switching over. This
165
tests whether the control element is moving towards the new set-point value.
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Check feedback signal at the instant of switching, the value must change.
Possible reason:
Z
The motor is sluggish
Remedy:
Z
Arise puls length of the motor
parameter 730 - 734
Possible reason:
Z
The motor has too much play
Remedy:
Z
extend parameter
parameter 705
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Parameter 705 is a safety parameter, the standard value is 3 sec.
With the extension you have to ensure, that a longer fault tolerance time is
acceptable with the conditions of the system.
During that time no fault shut-down will be carried out, even if the actuator
doesn't move in the right direction.
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If no range limits exist, faults may occur, dependent on the load position
during the "flying curve switching".
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Change in a curve set without range limits, par example a curve set without
pre-ventilation.
Remedy:
Z
Enter shut-off limits manually or turn off the determination of range limits
for this curve set. (contents 4 in parameter 106-108)
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E18
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Fault
451
A control element has left the ignition range after the VMS had detected
452
the ignition position.
453
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454
Possible causes
455
-
control element oscillating
-
wiring fault
-
holding torque of motor too low
103
i
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