Danfoss iC2 Application Manual page 268

Application Guide | iC2-Micro Frequency Converters
Check if the motor is mechanically overloaded.
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Check that the motor current set in P 4.2.2.3 Nominal Current is correct.
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Ensure that the motor data in P 4.2.2.1 Nominal Power to P 4.2.2.5 Nominal Speed is set correctly.
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Running AMA in P 4.2.1.3 AMA Mode tunes the drive to the motor more accurately and reduces thermal loading.
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WARNING/FAULT 11, Motor Thermistor Overtemp
Cause
Check whether the thermistor is disconnected. Select whether the drive issues a warning or an fault in P 4.6.7 Motor Thermal Protection.
Troubleshooting
Check for motor overheating.
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Check if the motor is mechanically overloaded.
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When using terminal 33 or 34, check that the thermistor is connected correctly between either terminal 33 or 34 (analog voltage
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input) and terminal 32 (+10 V supply). Also check that the terminal switch for 33 or 34 is set for voltage. Check that P 4.6.8
Thermistor Resource selects terminal 33 or 34.
When using terminal 13, 14, or 18 (digital inputs), check that the thermistor is connected correctly between the digital input
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terminal used (digital input PNP only) and terminal 32. Select the terminal to use in P 4.6.8 Thermistor Resource.
WARNING/FAULT 12, Torque Limit
Cause
The torque has exceeded the value in P 5.10.1 Motor Torque Limit or the value in P 5.10.2 Regenerative Torque Limit. P 5.10.6 Trip Delay
at Torque Limit can change this warning from a warning-only condition to a warning followed by an fault.
Troubleshooting
If the motor torque limit is exceeded during ramp-up, extend the ramp-up time.
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If the generator torque limit is exceeded during ramp-down time, extend the ramp-down time.
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If torque limit occurs while running, increase the torque limit. Make sure that the system can operate safely at a higher torque.
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Check the application for excessive current draw on the motor.
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WARNING/FAULT 13, Overcurrent
Cause
The inverter peak current limit (approximately 200% of the rated current) is exceeded. The warning lasts about 5 s, then the drive trips
and issues an fault. Shock loading or fast acceleration with high-inertia loads can cause this fault.
Troubleshooting
Remove power and check if the motor shaft can be turned.
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Check that the motor size matches the drive.
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Check P 4.2.2.1 Nominal Power to P 4.2.2.5 Nominal Speed for correct motor data.
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FAULT 14, Earth (Ground) Fault
Cause
There is a discharge from the output phases to ground, either in the cable between the drive and the motor or in the motor itself.
Troubleshooting
Turn off the drive and remove the ground fault.
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Measure the resistance to ground the motor cables and the motor with a megohmmeter to check for ground faults in the motor.
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