Danfoss VLT AutomationDrive FC 302, Operating Manual, Page: 90 / 158

WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to perform
installation, start-up, and maintenance by qualified
personnel can result in death or serious injury.
•
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
•
Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that there is no remaining voltage on
the drive.
Troubleshooting
•
Remove the power from the drive and check
motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the drive and the motor is
missing.
WARNING
HIGH VOLTAGE
Drives contain high voltage when connected to AC mains
input, DC supply, or load sharing. Failure to perform
installation, start-up, and maintenance by qualified
personnel can result in death or serious injury.
•
Only qualified personnel must perform instal-
lation, start-up, and maintenance.
•
Before performing any service or repair work,
use an appropriate voltage measuring device to
make sure that there is no remaining voltage on
the drive.
Troubleshooting
•
Remove the power from the drive and 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.
•
Check potential DC-link fault to ground.
WARNING/ALARM 34, Fieldbus communication fault
The fieldbus on the communication option card is not
working.
WARNING/ALARM 35, Option fault
An option alarm is received. The alarm is option-specific.
The most likely cause is a power-up or a communication
fault.
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 37, Phase imbalance
There is a current imbalance between the power units.
ALARM 38, Internal fault
When an internal fault occurs, a code number defined in
Table 9.4 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.
Number Text
0 The serial port cannot be initialized. Contact the
Danfoss supplier or Danfoss Service Department.
256–259,
266, 268
The power EEPROM data is defective or too old.
Replace the power card.
512–519 Internal fault. Contact the Danfoss supplier or
Danfoss Service Department.
783 Parameter value outside of minimum/maximum
limits.
1024–1284 Internal fault. Contact the Danfoss supplier or
Danfoss Service Department.
1299 The option SW in slot A is too old.
1300 The option SW in slot B is too old.
1301 The option SW in slot C0 is too old.
1302 The option SW in slot C1 is too old.
1315 The option SW in slot A is not supported (not
allowed).
Maintenance, Diagnostics, a... VLT® AutomationDrive FC 302
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