Siemens SINAMICS G120D - Page 71

Troubleshooting and further information
5.1 List of alarms and faults
SINAMICS G120D converter
Getting Started, 07/2016, FW V4.7 SP6, A5E38556189B AA
71
Number
Cause
Remedy
F07320 Automatic restart aborted Increase the number of restart attempts (p1211). The actual number of
start attempts is shown in r1214.
Increase the wait time in p1212 and/or monitoring time in p1213.
Connect an ON command (p0840).
Increase the monitoring time of the power unit or switch off (p0857).
Reduce the wait time for resetting the fault counter p1213[1] so that fewer
faults are registered in the time interval.
A07321 Automatic restart active
Explanation: The automatic restart (AR) is active. During voltage recovery
and/or when remedying the causes of pending faults, the drive is auto-
matically switched back on.
F07330
Search current measured too low
Increase search current (p1202), check motor connection.
A07400 V
DC_max
controller active If it is not desirable that the controller intervenes:
• Increase the ramp-down times.
• Deactivate the V
DC_max
controller (p1240 = 0 for vector control, p1280
= 0 for U/f control).
A07409 U/f control, current limiting control-
ler active
The alarm automatically disappears after one of the following measures:
• Increase the current limit (p0640).
• Reduce the load.
• Slow down the up ramp for the setpoint speed.
A07441 Backup the position offset of the
absolute encoder adjustment
This alarm automatically disappears after the offset has been saved.
F07443 Reference point coordinate not in
the permissible range
Set the reference point coordinate to a lower value than specified in the
fault value r0949 (interpret decimal).
F07450 Standstill monitoring has respond-
ed
After the standstill monitoring time (p2543) has expired, the drive has left
the standstill window (p2542). Check whether the following is set correct-
ly:
• Position actual value inversion (p0410)
• Standstill window too small (p2542)?
• Standstill monitoring time too short (p2543)?
• Position loop gain too low (p2538)?
• Position loop gain too high (instability/oscillatory behavior, p2538)?
• Mechanical overload?
Other possible causes:
• Connecting cable, motor/drive converter incorrect (phase missing,
interchanged).
• When selecting motor identification, select tracking mode (BI:
p2655[0] = 1 signal).