Faults and Alarms
List of Faults and Alarms
3-616
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
A07325 Drive: Hibernation active - drive reactivated automatically
Reaction: NONE
Acknowledge: NONE
Cause: The hibernation function is active (p2398). The drive automatically powers itself up again as soon as the restart con-
ditions are present.
See also: p2398 (Hibernation operating mode), r2399 (Hibernation status word)
Remedy: None necessary.
The alarm disappears when the motor is restarted automatically or switched off manually.
F07330 Flying restart: Measured search current too low
Reaction: OFF2 (NONE, OFF1)
Acknowledge: IMMEDIATELY
Cause: During a flying restart, it was identified that the search current reached is too low.
It is possible that the motor is not connected.
Remedy: Check the motor feeder cables.
F07331 FlyRestart: Not supported
Reaction: OFF2 (NONE, OFF1)
Acknowledge: IMMEDIATELY
Cause: It is not possible to power up with the motor rotating (no flying restart). In the following cases, the "flying restart" func-
tion is not supported:
Perm.-magnet synch. motors (PEM): operation with V/f char. and encoderless vector control.
Remedy: - deactivate the "flying restart" function (p1200 = 0).
A07400 (N) Drive: DC link voltage maximum controller active
Reaction: NONE
Acknowledge: NONE
Cause: The DC link voltage controller has been activated because the upper switch-in threshold has been exceeded (r1242,
r1282).
The ramp-down times are automatically increased in order to maintain the DC link voltage (r0070) within the permis-
sible limits. There is a system deviation between the setpoint and actual speeds.
When the DC link voltage controller is switched out (disabled), this is the reason that the ramp-function generator
output is set to the speed actual value.
See also: p1240 (Vdc controller or Vdc monitoring configuration (vector control)), p1280 (Vdc controller or Vdc mon-
itoring configuration (V/f))
Remedy: If the controller is not to intervene:
- increase the ramp-down times.
- shut down the Vdc_max controller (p1280 = 0).
If the ramp-down times are not to be changed:
- use a chopper or regenerative feedback unit.
A07401 (N) Drive: DC link voltage maximum controller deactivated
Reaction: NONE
Acknowledge: NONE
Cause: The Vdc_max controller can no longer maintain the DC link voltage (r0070) below the limit value (r1242, r1282) and
was therefore switched out (disabled).
- the line supply voltage is permanently higher than specified for the power unit.
- the motor is permanently in the regenerative mode as a result of a load that is driving the motor.
Remedy: - check whether the input voltage is within the permissible range.
- check whether the load duty cycle and load limits are within the permissible limits.
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