Siemens SINAMICS V10 Operating Instructions Manual page 113

Alarm
A0700
...
A0711
Internal communication
error
A0910
Vdc-max controller
disabled/switched-out
A0911
Vdc-max controller active
A0912
Vdc-min controller active
A0920
ADC parameters not set
properly
A0921
DAC parameters not set
properly
A0922
No load applied to inverter
A0923
Both JOG Left and JOG
Right are requested
SINAMICS V10
Operating Instructions, 08/2011, A5E03453178 (this is not an order number)
Possible causes
-
● Line supply voltage is permanently too high
● Motor is driven by an active load, which
means that the motor goes into
regenerative operation
● Decelerating (short down-ramps P1121)
for extremely high load torques
● Vdc max controller is active
● The ramp-down times are automatically
increased in order to keep the DC link
voltage (r0026) within the limit values
(Refer to r0026 and P1240).
● Vdc min controller is activated, if the DC
link voltage (r0026) falls below the
minimum value, refer to r0026 or P1240)
● The kinetic energy of the motor is used to
buffer the DC link voltage and therefore to
slow down the drive.
● Therefore brief line failures no longer
automatically result in an under voltage trip.
ADC parameters should not be set to identical
values, since this would produce illogical
results.
DAC parameters (P0777 vs. P0779 or P0778
vs. P0780) have identical values. Identical
values would produce illogical results.
● No load is applied to the inverter
● As a result, some functions may not work
as under normal load conditions.
Both JOG Left and JOG Right have been
requested. This freezes the RFG output
frequency at its current value. JOG right and
JOG left signals active together
Diagnose & Remedy
Contact your local distributor
Are load duty cycle and load limits within the
permissible limits?
● Check parameter inverter input voltage
● Check ramp-down times
● Check parameter inverter input voltage
● Check ramp-up times
Analogue input parameters should not be set
to the same value as each other
● Output parameter settings. Ensure P0777
and P0779 are not identical.
● Input parameter settings. Ensure P0778
and P0780 are not identical.
● Check that a load is applied to the inverter
● Check motor parameters concerned
Make sure that JOG right and JOG left signals
are not applied simultaneously.
Troubleshooting
113