Danfoss VLT AutomationDrive FC 301 Programming Manual page 840

Programming Guide | VLT® AutomationDrive FC 301/FC 302
WARNING/ALARM 10, Motor ETR Overtemperature
Cause
According to the electronic thermal protection (ETR), the motor is too hot. Select whether the drive issues a warning or an alarm when
the counter reaches 100% in parameter 1-90 Motor Thermal Protection. The fault occurs when the motor runs with more than 100%
overload for too long.
Troubleshooting
Check for motor overheating.
l
Check if the motor is mechanically overloaded.
l
Check that the motor current set in parameter 1-24 Motor Current is correct.
l
Ensure that the motor data in parameter 1-20 to parameter 1-25 is set correctly.
l
Running AMA in parameter 1-29 Automatic Motor Adaptation (AMA) tunes the drive to the motor more accurately and reduces
l
thermal loading.
WARNING/ALARM 11, Motor Thermistor Overtemperature
Cause
Check whether the thermistor is disconnected. Select whether the drive issues a warning or an alarm in parameter 1-90 Motor Thermal
Protection.
Troubleshooting
Check for motor overheating.
l
Check if the motor is mechanically overloaded.
l
When using terminal 53 or 54, check that the thermistor is connected correctly between either terminal 53 or 54 (analog voltage
l
input) and terminal 50 (+10 V supply). Also check that the terminal switch for 53 or 54 is set for voltage. Check that parameter 1-93
Thermistor Resource selects terminal 53 or 54.
When using terminal 18, 19, 31, 32, or 33 (digital inputs), check that the thermistor is connected correctly between the digital input
l
terminal used (digital input PNP only) and terminal 50. Select the terminal to use in parameter 1-93 Thermistor Resource.
WARNING/ALARM 13, Overcurrent
Cause
The inverter peak current limit (approximately 200% of the rated current) is exceeded. The warning lasts about 1.5 s, then the drive trips
and issues an alarm. Shock loading or quick acceleration with high-inertia loads can cause this fault. If the acceleration during ramp-up is
quick, the fault can also appear after kinetic backup. If extended mechanical brake control is selected, a trip can be reset externally.
Troubleshooting
Remove power and check if the motor shaft can be turned.
l
Check that the motor size matches the drive.
l
Check that the motor data is correct in parameters 1-20 to 1-25.
l
ALARM 14, Earth (Ground) Fault
Cause
There is current from the output phase to ground, either in the cable between the drive and the motor, or in the motor itself. The current
sensors detect the ground fault by measuring current going out from the drive and current going into the drive from the motor. Ground
fault is issued if the deviation of the 2 currents is too large. The current going out of the drive must be the same as the current going into
the drive.
840 | © 2024.09
Troubleshooting
AU275636650261en-003201 / 130R0334