Danfoss VLT Flow Drive FC 111 Programming Manual page 198

VLT® Flow Drive FC 111
Programming Guide
•
Ensure that the motor data in parameters 1-20 to 1-25 is set correctly.
•
Run AMA in parameter 1-29 Automatic Motor Adaption (AMA).
5.5.8 WARNING/ALARM 11, Motor Thermistor Overtemp
Cause
Check whether the thermistor is disconnected. Select whether the drive issues a warning or an alarm in parameter 1-90 Motor Ther-
mal Protection.
Troubleshooting
• Check for motor overheating.
• Check if the motor is mechanically overloaded.
• Ensure that the thermistor is connected correctly.
•
If using a thermal switch or thermistor, ensure that the programming of parameter 1-93 Thermistor Source matches sensor wir-
ing.
5.5.9 WARNING/ALARM 13, Overcurrent
Cause
The inverter peak current limit is exceeded. The warning lasts about 1.5 s, then the drive trips and issues an alarm.
Troubleshooting
• This fault may be caused by shock loading or fast acceleration with high inertia loads.
• Turn off the drive. Check if the motor shaft can be turned.
• Check that the motor size matches the drive.
•
Check that the motor data is correct in parameters 1-20 to 1-25.
5.5.10 ALARM 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.
• Check for ground faults in the motor by measuring the resistance to ground of the motor cables and the motor with a megohm-
meter.
5.5.11 ALARM 16, Short Circuit
Cause
There is short-circuiting in the motor or motor wiring.
Troubleshooting
HAZARDOUS VOLTAGE
AC drives contain hazardous voltage when connected to the AC mains or connected on the DC terminals. Failure to perform
installation, start-up, and maintenance by skilled personnel can result in death or serious injury.
-
Only skilled personnel must perform installation, start-up, and maintenance.
• Disconnect power before proceeding.
• Remove the power to the drive and repair the short circuit.
5.5.12 WARNING/ALARM 17, Control Word Timeout
Cause
There is no communication to the drive. The warning is only active when parameter 8-04 Control Word Timeout Function is NOT set to
[0] Off.
198 | Danfoss A/S © 2021.07
W A R N I N G
Troubleshooting
AU363928304090en-000101 / 130R0982