Danfoss VLT AQUA Drive FC 202 Instruction Manual page 46

Maintenance, Diagnostics an...
WARNING/ALARM 28, Brake check failed
The brake resistor is not connected or not working.
Check 2-15 Brake Check.
ALARM 29, Heatsink temp
The maximum temperature of the heatsink has been
exceeded. The temperature fault does not reset until the
temperature drops 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
7 7
•
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.
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VLT AQUA Drive FC 202
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 7.5 is displayed.
Troubleshooting
•
•
•
Contact the Danfoss supplier or service department if
required. Note the code number for further trouble-
shooting directions.
256-258
1024-1279
Danfoss A/S © 10/2014 All rights reserved.
Cycle power
Check that the option is properly installed
Check for loose or missing wiring
No. Text
0 Serial port cannot be initialized. Contact
theDanfoss 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 timeout reading EEPROM data.
514 Communication timeout 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 couldn't 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.
MG20MA22