User Manual

SINAMICS G120 CU230P-2 Control Units
List Manual (LH9), 04/2014, A5E33838102B AA
697
4 Faults and alarms
4.2 List of faults and alarms
F07312 Bypass LSS:
Message class: Application / technological function faulted (17)
Reaction: OFF2
Acknowledge: IMMEDIATELY
Cause: Fault value (r0949, interpret bitwise binary):
Bit 1: Switch "Closed" feedback signal missing.
Bit 2: Switch "Open" feedback signal missing.
Bit 3: 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: Line Side Switch feedback signal not consistent with the bypass state.
When switching-on or when switching-in the motor, 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
Message class: Application / technological function faulted (17)
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 delay time for resetting the start counter (p1213[1]) so that fewer faults are registered in the time
interval.
A07321 Drive: Automatic restart active
Message class: Application / technological function faulted (17)
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, 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
Message class: Application / technological function faulted (17)
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)