VBMS ....
13
12.4 Possible fault indications during commissioning
During commissioning, and in normal operation too, fault indications can occur. The following
explanation is to give you assistance in the localization and correction of faults.
Fault
indication on
LED „Ready“,
„(V9)“
Fault
Possible cause
Fault correction
Flashing 1x
No motor standstill
during max. braking
time
Braking current adjusted to a
too small value.
Adjust braking current to a
higher value.
Too large centrifugal mass.
Use VBMS with longer max.
braking time.
Terminal „6T3“ „(T3)“ is not
connected and the motor is not
suplied with current for a period
of 1,5s prior to the standstill.
If possible, connect 6T3 (T3) or
adjust the braking current to a
slightly lower value.
Standstill threshold is not
adapted.
Adapt standstill threshold with
„n0“.
Flashing 2x
Adjusted braking
current was not
reached.
Interruption in the braking
circuit. Possibly the motor is
started with star-delta
connection.
Check circuit. Possibly the star
contactor has to be closed
during braking.
The resistance of the motor
winding is too high for the
adjusted braking current.
Turn braking current back so
that the fault does not occur
any more.
Flashing 3x
VBMS is
overloaded.
Braking frequency is
too high.
The specified max. braking
frequency is exceeded.
Reduce braking current or
braking frequency.
During commissioning,
4 braking operations in
succession can be initiated
without an overload being
indicated.
Flashing 4x
Contacts of motor
contactor are
charred/short-
circuited.
Starting current of the motor is
too high (high-inertia starting,
blocked motor).
Send device for repair.
Motor with too high power
rating was connected.
Send device for repair.
Flashing 5x
3x in succession no
standstill detected
Braking current adjusted to a
too small value.
Adjust braking current to higher
value.
Centrifugal mass is too large.
Use braking device with longer
max. braking time or higher
rated device current.
Standstill threshold is not
adapted.
Adapt standstill threshold with
„n0“.
Flashing 6x
Program error
Program crash
Send device for repair.
Содержание 2C000.23020
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