Technical data

List of Faults and Alarms
Faults and Alarms
3-681
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SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 01/2011
A07321 Drive: Automatic restart active
Reaction: NONE
Acknowledge: NONE
Cause: The automatic restart (AR) is active. When the line supply returns and/or the causes of the existing faults are
removed the drive is automatically restarted. The pulses are enabled and the motor starts to rotate.
For p1210 = 26, the alarm after the line supply returns is also displayed if there is no fault and there is no ON
command. Restarting is realized with the delayed setting of the ON command.
Remedy: - the automatic restart (AR) should, if required, be inhibited (p1210 = 0).
- an automatic restart can be directly interrupted by withdrawing the power-on command (BI: p0840).
- for p1210 = 26: by withdrawing the OFF2- / OFF3 control commands.
A07325 Drive: Hibernation active - drive re-activated automatically
Reaction: NONE
Acknowledge: NONE
Cause: The hibernation function is active (p2398). The drive automatically powers itself up again as soon as the restart
conditions are present.
See also: p2398 (Hibernation operating mode), r2399 (Hibernation status word)
Remedy: Not 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 Flying restart: Function 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"
function is not supported:
Perm.-magnet synch. motors (PEM): operation with U/f char. and sensorless vector control.
Remedy: Cancel 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
permissible 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: r0056 (Status word, closed-loop control), p1240 (Vdc controller or Vdc monitoring configuration (vector
control)), p1280 (Vdc controller or Vdc monitoring configuration (U/f))
Remedy: If the controller is not to intervene:
- increase the ramp-down times.
- switch-off the Vdc_max controller (p1240 = 0 for vector control, p1280 = 0 for U/f control).
If the ramp-down times are not to be changed:
- use a chopper or regenerative feedback unit.