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Alarms, faults and system messages
9.4 List of alarms and faults
Frequency inverters with Control Units CU230P-2 HVAC, CU230P-2 DP, CU230P-2 CAN
298
Operating Instructions, 01/2011, FW 4.4, A5E02430659B AD
Number Cause
Remedy
F07011
Motor overtemperature
Reduce the motor load.
Check ambient temperature.
Check the wiring and connection of the sensor.
A07012
I2t Motor Module overtemperature Check and if necessary reduce the motor load.
Check the motor's ambient temperature.
Check thermal time constant p0611.
Check overtemperature fault threshold p0605.
A07015
Motor temperature sensor alarm
Check that the sensor is connected correctly.
Check the parameter assignment (p0601).
F07016
Motor temperature sensor fault
Make sure that the sensor is connected correctly.
Check the parameterization (p0601).
Deactivate the temperature sensor fault (p0607 = 0).
F07086
F07088
Unit switchover: Parameter limit
violation
Check the adapted parameter values and if required correct.
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
automatically 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
controller 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.
F07426
Technology controller actual value
limited
•
Adapt the limits to the signal level (p2267, p2268).
•
Check the actual value scaling (p2264).
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