Siemens SINAMICS G120D Operating Instructions Manual page 300

Alarms, faults and system messages
9.6 List of alarms and faults
Number Cause
A07012 I2t motor model overtemperature
A07015 Motor temperature sensor alarm
F07016 Motor temperature sensor fault
F07086 Unit switchover: Parameter limit vi‐
F07088 olation
F07320 Automatic restart aborted
A07321 Automatic restart active
F07330 Search current measured too low
A07400 V controller active
DC_max
A07409 U/f control, current limiting control‐
ler active
F07426 Technology controller actual value
limited
F07801 Motor overcurrent
A07805 Drive: Power unit overload I2t
298
Remedy
Check and if necessary reduce the motor load.
Check the motor's ambient temperature.
Check thermal time constant p0611.
Check overtemperature fault threshold p0605.
Check that the sensor is connected correctly.
Check the parameter assignment (p0601).
Make sure that the sensor is connected correctly.
Check the parameterization (p0601).
Deactivate the temperature sensor fault (p0607 = 0).
Check the adapted parameter values and if required correct.
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.
Explanation: The automatic restart (AR) is active. During voltage recovery
and/or when remedying the causes of pending faults, the drive is automat‐
ically switched back on.
Increase search current (p1202), check motor connection.
If it is not desirable that the controller intervenes:
• Increase the ramp-down times.
• Deactivate the V controller (p1240 = 0 for vector control, p1280 =
DC_max
0 for U/f control).
The alarm automatically disappears after one of the following measures:
• Increase the current limit (p0640).
• Reduce the load.
• Slow down the ramp up to the setpoint speed.
• Adapt the limits to the signal level (p2267, p2268).
• Check the actual value scaling (p2264).
Check current limits (p0640).
Vector control: Check current controller (p1715, p1717).
U/f control: Check the current limiting controller (p1340 ... p1346).
Increase acceleration ramp (p1120) or reduce load.
Check motor and motor cables for short circuit and ground fault.
Check motor for star-delta connection and rating plate parameterization.
Check power unit / motor combination.
Select flying restart function (p1200) if switched to rotating motor.
• Reduce the continuous load.
• Adapt the load cycle.
• Check the assignment of rated currents of the motor and power unit.
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH
Converter with the control units CU240D-2