Siemens SINAMICS G120 Operating Instructions Manual page 416

Low voltage converter with the cu240b-2 and cu240e-2 control units
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Alarms, faults and system messages
9.5 List of alarms and faults
Number
Cause
A05000
Power Module overtemperature
A05001
A05002
A05004
A05006
F06310
Supply voltage (p0210) incorrectly
set
F07011
Motor overtemperature
A07012
I2t Motor Module overtemperature
A07015
Motor temperature sensor alarm
F07016
Motor temperature sensor fault
F07086
Switching over units: Parameter
F07088
limit violation
F07320
Automatic restart aborted
A07321
Automatic restart active
F07330
Search current measured too low
A07400
DC-link voltage maximum control-
ler active
A07409
V/f control, current limiting control-
ler active
F07426
Technology controller actual value
limited
A07444
PID autotuning is activated
416
Remedy
Check the following:
- Is the ambient temperature within the defined limit values?
- Are the load conditions and duty cycle configured accordingly?
- Has the cooling failed?
Check the set supply voltage and if required change (p0210).
Check the line voltage.
Reduce the motor load.
Check the ambient temperature.
Check the wiring and connection of the sensor.
Check and if necessary reduce the motor load.
Check the motor's ambient temperature.
Check the thermal time constant p0611.
Check the 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 motor temperature sensor fault evaluation (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 auto-
matically switched back on.
Increase the search current (p1202), check the motor connection.
If it is not desirable that the controller intervenes:
Increase the ramp-down times.
Deactivate the Vdc_max control (p1240 = 0 for vector control, p1280 =
0 for V/f control).
The alarm automatically disappears after one of the following measures:
Increase the current limit (p0640).
Reduce the load.
Slow down the ramp-ups for the setpoint speed.
Adapt the limits to the signal level (p2267, p2268).
Check the actual value scaling (p2264).
Automatic setting of the PID controller (autotuning) is active (p2350 > 0).
The alarm disappears automatically after completion of the autotuning.
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC

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