Danfoss VLT FC 102 User Manual page 45

Maintenance, Diagnostics, a...
ALARM 32, Motor phase W missing
Motor phase W between the drive system and the motor is
missing.
Troubleshooting
•
Remove the power from the drive system and
then check motor phase W.
ALARM 33, Inrush fault
Too many power-ups have occurred within a short time
period.
Troubleshooting
•
Let the unit cool to operating temperature.
WARNING/ALARM 34, Fieldbus communication fault
The fieldbus 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 drive system is lost and parameter 14-10 Mains Failure
is not set to option [0] No Function.
•
Check the fuses to the drive system and the
mains supply to the unit.
•
Check that mains voltage conforms to product
specifications.
•
Check that the following conditions are not
present:
Alarm 307, Excessive THD(V), alarm 321, Voltage
imbalance, warning 417, Mains undervoltage, or
warning 418, Mains overvoltage is reported if any
of the listed conditions are true:
- The 3-phase voltage magnitude drops
below 25% of the nominal mains
voltage.
-
Any single-phase voltage exceeds 10%
of the nominal mains voltage.
- Percent of phase or magnitude
imbalance exceeds 8%.
-
Voltage THD exceeds 10%.
ALARM 38, Internal fault
When an internal fault occurs, a code number defined in
Table 6.7 is shown.
Troubleshooting
•
Cycle power.
•
Check that the option is properly installed.
•
Check for loose or missing wiring.
It may be necessary to contact the Danfoss supplier or
service department. Note the code number for further
troubleshooting directions.
MG37L202
User Guide
Number
0
256–258
512–519
783
1024–1284
1299
1300
1302
1315
1316
1318
1379–2819
1792
1793
1794
1795
1796
2561
2820
2821
2822
3072–5122
5123
5124
5125
5126
5376–6231
Table 6.7 Internal Fault Codes
ALARM 39, Heat sink sensor
No feedback from the heat sink temperature sensor.
The signal from the IGBT thermal sensor is not available on
the power card. The problem could be on the power card,
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Text
The serial port cannot be initialized. Contact the
Danfoss supplier or Danfoss service department.
The power EEPROM data is defective or too old.
Replace the power card.
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
Parameter value outside of minimum/maximum
limits.
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
The option software in slot A is too old.
The option software in slot B is too old.
The option software in slot C1 is too old.
The option software in slot A is not supported/
allowed.
The option software in slot B is not supported/
allowed.
The option software in slot C1 is not supported/
allowed.
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
Hardware reset of digital signal processor.
Motor-derived parameters not transferred correctly
to the digital signal processor.
Power data not transferred correctly at power-up
to the digital signal processor.
The digital signal processor has received too many
unknown SPI telegrams. The frequency converter
also uses this fault code if the MCO does not
power up correctly. This situation can occur due to
poor EMC protection or improper grounding.
RAM copy error.
Replace the control card.
LCP stack overflow.
Serial port overflow.
USB port overflow.
Parameter value is outside its limits.
Option in slot A: Hardware incompatible with the
control board hardware.
Option in slot B: Hardware incompatible with the
control board hardware.
Option in slot C0: Hardware incompatible with the
control board hardware.
Option in slot C1: Hardware incompatible with the
control board hardware.
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
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