Operating Instructions

List of faults and alarms
Faults and alarms
3-685
© Siemens AG 2008 - 2013 All Rights Reserved
SINAMICS G120 CU230P-2 Control Units List Manual (LH9), 01/2013
Remedy: - increase the number of restart attempts (p1211). The actual number of starting attempts is displayed in r1214.
- increase the delay time in p1212 and/or the monitoring time in p1213.
- issue an ON command (p0840).
- either increase or disable the monitoring time of the power unit (p0857).
- Reduce the delay time for resetting the start counter (p1213[1]) so that fewer faults are registered in the time inter-
val.
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 com-
mand. 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: Energy-saving mode active - drive automatically switched-on again
Reaction: NONE
Acknowledge: NONE
Cause: The "energy-saving mode" function is active (p2398). The drive automatically powers itself up again as soon as the
restart conditions are present.
See also: p2398 (Energy-saving mode), r2399 (Energy-saving mode status would)
Remedy: Not necessary.
The alarm disappears when the motor is restarted automatically or when the motor is manually switched off.
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" func-
tion is not supported:
Perm.-magnet synch. motors (PEM): operation with U/f char. and sensorless vector control.
Remedy: De-activate 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: r0056 (Status word, closed-loop control), p1240 (Vdc controller configuration (vector control)), p1280 (Vdc
controller 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.