Table of Contents
Advertisement
VLT® HVAC Drive FC 131
Programming Guide
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.
If parameter 8-04 Control Word Timeout Function is set to [5] Stop and trip, a warning appears, and the drive ramps down to a stop
and shows an alarm.
Troubleshooting
•
Check the connections on the serial communication cable.
•
Increase parameter 8-03 Control Word Timeout Time.
•
Check the operation of the communication equipment.
•
Verify that proper EMC installation was performed.
5.5.13 WARNING/ALARM 24, Fan Fault
Cause
The fan warning function is an extra protection function that checks whether the fan is running/mounted. The fan warning can be
disabled in parameter 14-53 Fan Monitor ([0] Disabled).
Troubleshooting
•
Check fan resistance.
5.5.14 ALARM 30, Motor Phase U Missing
Cause
Motor phase U between the drive and the motor is missing.
Troubleshooting
•
Turn off the drive and check motor phase U.
5.5.15 ALARM 31, Motor Phase V Missing
Cause
Motor phase V between the drive and the motor is missing.
Troubleshooting
•
Turn off the drive and check motor phase V.
5.5.16 ALARM 32, Motor Phase W Missing
Cause
Motor phase W between the drive and the motor is missing.
Troubleshooting
•
Turn off the drive and check motor phase W.
184 | Danfoss A/S © 2022.05
W A R N I N G
Troubleshooting
AU370727746889en-000101 / 130R0994
Advertisement
Table of Contents
