Danfoss VLT FC 103 Operating Manual page 73

Maintenance, Diagnostics, a...
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 Line 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:
MG16P222
Operating Guide
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 8.4 is shown.
Troubleshooting
•
•
•
It may be necessary to contact the Danfoss supplier or
service department. Note the code number for further
troubleshooting directions.
Number
0
256–259,
266, 268
512–519
783
1024–1284 Internal fault. Contact the Danfoss supplier or
1299
1300
1301
1302
1315
1316
1317
1318
1360–2819 Internal fault. Contact the Danfoss supplier or
2561
2820
2821
2822
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- 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%.
Cycle power.
Check that the option is properly installed.
Check for loose or missing wiring.
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.
Danfoss Service Department.
The option SW in slot A is too old.
The option SW in slot B is too old.
The option SW in slot C0 is too old.
The option SW in slot C1 is too old.
The option SW in slot A is not supported (not
allowed).
The option SW in slot B is not supported (not
allowed).
The option SW in slot C0 is not supported (not
allowed).
The option SW in slot C1 is not supported (not
allowed).
Danfoss Service Department.
Replace control card.
LCP stack overflow.
Serial port overflow.
USB port overflow.
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