Danfoss VLT FC 103 Instruction Manual page 71

Warnings and Alarms
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
•
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
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.
®
VLT Refrigeration Drive Instruction Manual
Troubleshooting
It may be necessary to contact the Danfoss supplier or
service department. Note the code number for further
troubleshooting directions.
256-258
1024-1279
®
MG16J122 - VLT is a registered Danfoss trademark
•
Cycle power
•
Check that the option is properly installed
•
Check for loose or missing wiring
No. Text
0 Serial port cannot be initialized. Contact the
Danfoss supplier or Danfoss Service Department.
Power EEPROM data is defective or too old.
512 Control board EEPROM data is defective or too
old.
513 Communication time out reading EEPROM data
514 Communication time out reading EEPROM data
515 Application oriented control cannot recognize the
EEPROM data.
516 Cannot write to the EEPROM because a write
command is on progress.
517 Write command is under timeout
518 Failure in the EEPROM
519 Missing or invalid barcode data in EEPROM
783 Parameter value outside of min/max limits
A CAN message that has to be sent cannot be
sent.
1281 Digital signal processor flash timeout
1282 Power micro software version mismatch
1283 Power EEPROM data version mismatch
1284 Cannot read digital signal processor software
version
1299 Option SW in slot A is too old
1300 Option SW in slot B is too old
1301 Option SW in slot C0 is too old
1302 Option SW in slot C1 is too old
1315 Option SW in slot A is not supported (not allowed)
1316 Option SW in slot B is not supported (not allowed)
1317 Option SW in slot C0 is not supported (not
allowed)
1318 Option SW in slot C1 is not supported (not
allowed)
1379 Option A did not respond when calculating
platform version
1380 Option B did not respond when calculating
platform version
1381 Option C0 did not respond when calculating
platform version.
1382 Option C1 did not respond when calculating
platform version.
1536 An exception in the application oriented control is
registered. Debug information written in LCP
8 8
8-9