Danfoss VLT FC 100 Instruction Manual page 76

Warnings and Alarms
ALARM 29, Heatsink temp
The maximum temperature of the heatsink has been
exceeded. The temperature fault will not reset until the
temperature falls below a defined heatsink temperature.
The trip and reset points are different based on the
adjustable frequency drive power size.
Troubleshooting
Check for the following conditions
•
Ambient temperature too high
•
Motor cable too long
•
Incorrect airflow clearance above and below the
adjustable frequency drive
•
Blocked airflow around the adjustable frequency
drive
•
Damaged heatsink fan
•
Dirty heatsink
This alarm is based on the temperature measured by the
heatsink sensor mounted inside the IGBT modules.
Troubleshooting
•
8 8
Check fan resistance
•
Check soft charge fuses
•
IGBT thermal sensor
ALARM 30, Motor phase U missing
Motor phase U between the adjustable frequency drive
and the motor is missing.
Remove power from the adjustable frequency drive and
check motor phase U.
ALARM 31, Motor phase V missing
Motor phase V between the adjustable frequency drive
and the motor is missing.
Remove power from the adjustable frequency drive and
check motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the adjustable frequency drive
and the motor is missing.
Remove power from the adjustable frequency drive and
check motor phase W.
ALARM 33, Inrush fault
Too many power-ups have occurred within a short time
period. Let the unit cool to operating temperature.
WARNING/ALARM 34, Fieldbus communication fault
The serial communication bus on the communication
option card is not working.
WARNING/ALARM 36, Mains Failure
This warning/alarm is only active if the supply voltage to
the adjustable frequency drive is lost and 14-10 Mains
Failure is NOT set to [0] No Function. Check the fuses to the
8-8
®
VLT HVAC Drive D-Frame
Instruction Manual
adjustable frequency drive and line power supply to the
unit.
ALARM 38, Internal fault
When an internal fault occurs, a code number defined in
the table below is displayed.
Troubleshooting
•
•
•
It may be necessary to contact the Danfoss supplier or
service department. Note the code number for further
troubleshooting directions.
No.
256-258
512
513
514
515
516
517
518
519
783
1024-1279
1281
1282
1283
1284
1299
1300
1301
1302
1315
1316
1317
1318
1379
1380
®
MG16D222 - VLT is a registered Danfoss trademark
Cycle power
Check that the option is properly installed
Check for loose or missing wiring
Text
0 Serial port cannot be initialized. Contact the
Danfoss supplier or Danfoss Service Department.
Power EEPROM data is defective or too old.
Control board EEPROM data is defective or too
old.
Communication time out reading EEPROM data
Communication time out reading EEPROM data
Application oriented control cannot recognize the
EEPROM data.
Cannot write to the EEPROM because a write
command is on progress.
Write command is under timeout
Failure in the EEPROM
Missing or invalid barcode data in EEPROM
Parameter value outside of min/max limits
A CAN message that has to be sent cannot be
sent.
Digital signal processor flash timeout
Power micro software version mismatch
Power EEPROM data version mismatch
Cannot read digital signal processor software
version
Option SW in slot A is too old
Option SW in slot B is too old
Option SW in slot C0 is too old
Option SW in slot C1 is too old
Option SW in slot A is not supported (not allowed)
Option SW in slot B is not supported (not allowed)
Option SW in slot C0 is not supported (not
allowed)
Option SW in slot C1 is not supported (not
allowed)
Option A did not respond when calculating
platform version
Option B did not respond when calculating
platform version