List of Faults and Alarms
Faults and Alarms
3-615
© Siemens AG 2009 All Rights Reserved
SINAMICS G120 Control Units CU230P-2 Parameter Manual (LH9), 11/2009
F07312 Bypass LSS:
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: Fault value: Bit field BYPASS_CONTACTOR_ERROR_STATE
Bit 1
BYPASS_CONTACTOR_ERR_FBK_ON_MISSING
Switch "Closed" feedback signal missing
Bit 2
BYPASS_CONTACTOR_ERR_FBK_OFF_MISSING
Switch "Open" feedback signal missing
Bit 3
BYPASS_CONTACTOR_ERR_TOO_SLOW
Switch feedback signal too slow:
After switching, the system waits for the positive feedback signal. If the feedback signal is received later than the
specified time, then a fault trip (shutdown) is issued.
Bit 6
BYPASS_CONTACTOR_ERR_BYPASS_INCONSISTENCY
Line Side Switch feedback signal is not consistent with the bypass state:
When powering up or for STAGING, the Line Side Switch is closed without this having been requested from the
bypass.
See also: p1260 (Bypass configuration), r1261 (Bypass control/status word), p1266 (Bypass, control command),
p1267 (Bypass changeover source configuration), p1269 (Bypass switch feedback signal), p1274 (Bypass switch
monitoring time)
Remedy: - check the transfer of the feedback signals.
- check the switch.
F07320 Drive: Automatic restart interrupted
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: - The specified number of restart attempts (p1211) has been completely used up because within the monitoring time
(p1213) the faults were not able to be acknowledged. The number of restart attempts (p1211) is decremented at each
new start attempt.
- there is no active ON command.
- the monitoring time for the power unit has expired (p0857).
- when exiting commissioning or at the end of the motor identification routine or the speed controller optimization, the
drive unit is not automatically powered up again.
Fault value (r0949, interpret hexadecimal):
Only for internal Siemens troubleshooting.
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 waiting time for resetting the fault 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.
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).
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