40
ALM-446
VFD Fault - Line
Voltage
Imbalance
Manual
Unit shuts down.
Alarm relay turns on.
Check phase-to-phase and phase-to-ground distribution bus voltage.
Increase Line Voltage Imbalance% in CFGUMVFD screen.
ALM-447
VFD Fault -
Frequency Fault Manual
Unit shuts down.
Alarm relay turns on.
Check Power Supply
If operating from a generator, check generator size and speed.
Check utility power supply.
ALM-448
VFD Fault - VFD
Comm Fail
Manual
Unit shuts down.
Alarm relay turns on.
Check VFD communication wiring and connectors.
Check status lights on DPI Communications Interface Board.
Call Carrier Service.
ALM-449
VFD Fault - VFD
Fault
Manual
Unit shuts down.
Alarm relay turns on.
Check fault code and possible cause in corresponding type of VFD user
manuals
Call Carrier Service
ALM-450
VFD Fault - VFD
Start Inhibit
Manual
Unit shuts down.
Alarm relay turns on.
The VFD Start Inhibit is derived from the Alarm bit being set in the VFD.
The conditions causing the alarm must be corrected in the VFD to
enable subsequent starts and operation
ALM-451
VFD Fault - VFD
Checksum Error Manual
Unit shuts down.
Alarm relay turns on.
Press Reset to Restore Configuration.
Actual VFD checksum does not match calculated value.
ALM-452
VFD Fault -
Inductor
Overtemp Switch
Manual
Unit shuts down.
Alarm relay turns on.
Check Temp Switch and Cooling Fans.
Check for cooling fan air flow obstructions
ALM-453
VFD Fault -
Incompatibility
Fault
Manual
Unit shuts down.
Alarm relay turns on. Load compatible version files into drive
ALM-454
VFD Fault - Main
Power Failure
Manual
Unit shuts down.
Alarm relay turns on. Check the main power to VFD
ALM-500
VFD Fault -
Brake Check
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-501
VFD Fault -
Power Card Over
Temperature
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-502
VFD Fault - Earth
Fault
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-503
VFD Fault - Ctrl
Card Over
Temperature
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-504
VFD Fault -
Control Word
Timeout
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-505
VFD Fault - Over
Current
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-506
VFD Fault -
Torque Limit
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-507
VFD Fault -
Motor Thermistor
Over Temp
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-508
VFD Fault -
Motor Etr Over
Temperature
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-509
VFD Fault -
Inverter Overload Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-510
VFD Fault - DC
Link Under
Voltage
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-511
VFD Fault - DC
Link Over
Voltage
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-512
VFD Fault - Short
Circuit
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-513
VFD Fault -
Inrush Fault
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-514
VFD Fault -
Mains Phase
Loss
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-515
VFD Fault - AMA
Not OK
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-516
VFD Fault - Live
Zero Error
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-517
VFD Fault -
Internal Fault
Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
ALM-518
VFD Fault -
Brake OverLoad Manual
Unit shuts down.
Alarm relay turns on. Refer to Danfoss VFD trouble shooting manual
Table 16 — PIC6 Alarm Codes* (cont)
ALARM CODE
DESCRIPTION
OF ALARM TEXT
RESET TYPE
ACTION TAKEN BY
THE CONTROL
POSSIBLE CAUSE
