Danfoss VLT FC Series Service Manual page 75

Troubleshooting
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 6.6 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, The power EEPROM data is defective or too old.
266, 268 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).
MG94A502
Service Guide
Number
1316
1317
1318
1360–2819 Internal fault. Contact the Danfoss supplier or
2561
2820
2821
2822
3072–5122 Parameter value is outside its limits.
5123
5124
5125
5126
5127
5168
5376–65535 Internal fault. Contact the Danfoss supplier or
Table 6.6 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.
Troubleshooting
•
•
•
WARNING 40, Overload of digital output terminal 27
Check the load connected to terminal 27 or remove the
short-circuit connection. Check parameter 5-00 Digital I/O
Mode and parameter 5-01 Terminal 27 Mode.
WARNING 41, Overload of digital output terminal 29
Check the load connected to terminal 29 or remove the
short-circuit connection. Also check parameter 5-00 Digital
I/O Mode and parameter 5-02 Terminal 29 Mode.
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Text
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.
Option in slot A: Hardware incompatible with
control board hardware.
Option in slot B: Hardware incompatible with
control board hardware.
Option in slot C0: Hardware incompatible with
control board hardware.
Option in slot C1: Hardware incompatible with
control board hardware.
Illegal option combination (2 options of the same
kind mounted, or encoder in E0 and resolver in E1
or similar).
Safe stop/safe torque off was detected on a
control card that does not have safe stop/safe
torque off.
Danfoss Service Department.
Check the ribbon cable between the power card
and gate drive card.
Check for a defective power card.
Check for a defective gate drive card.
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