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.
256–258
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 software in slot A is too old.
1300
The option software in slot B is too old.
1302
The option software in slot C1 is too old.
1315
The option software in slot A is not supported/
allowed.
1316
The option software in slot B is not supported/
allowed.
1318
The option software in slot C1 is not supported/
allowed.
1379–2819
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
1792
Hardware reset of digital signal processor.
1793
Motor-derived parameters not transferred correctly
to the digital signal processor.
1794
Power data not transferred correctly at power-up
to the digital signal processor.
1795
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.
1796
RAM copy error.
2561
Replace the control card.
2820
LCP stack overflow.
2821
Serial port overflow.
2822
USB port overflow.
3072–5122
Parameter value is outside its limits.
5123
Option in slot A: Hardware incompatible with the
control board hardware.
5124
Option in slot B: Hardware incompatible with the
control board hardware.
5125
Option in slot C0: Hardware incompatible with the
control board hardware.
5126
Option in slot C1: Hardware incompatible with the
control board hardware.
5376–6231
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
Table 7.1 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,
on the gatedrive card, or the ribbon cable between the
power card and gatedrive card.
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
.
WARNING 42, Overload of digital output on X30/6 or
overload of digital output on X30/7
For terminal X30/6, check the load connected to terminal
X30/6 or remove the short-circuit connection. Also check
parameter 5-32 Term X30/6 Digi Out (MCB 101)
(VLT
®
General Purpose I/O MCB 101).
For terminal X30/7, check the load connected to terminal
X30/7 or remove the short-circuit connection. Check
parameter 5-33 Term X30/7 Digi Out (MCB 101)
(VLT
®
General Purpose I/O MCB 101).
ALARM 43, Ext. supply
VLT
®
Extended Relay Option MCB 113 is mounted without
external 24 V DC. Either connect a 24 V DC external supply
or specify that no external supply is used via
parameter 14-80 Option Supplied by External 24VDC
,
[0] No
.
A change in
parameter 14-80 Option Supplied by External
24VDC
requires a power cycle.
ALARM 45, Earth fault 2
Ground fault.
Troubleshooting
•
Check for proper grounding and loose
connections.
•
Check for proper wire size.
•
Check the motor cables for short circuits or
leakage currents.
ALARM 46, Power card supply
The supply on the power card is out of range. Another
reason can be a defective heat sink fan.
There are 3 supplies generated by the switch mode supply
(SMPS) on the power card:
•
24 V.
•
5 V.
•
±
18 V.
When powered with VLT
®
24 V DC Supply MCB 107, only
the 24 V and 5 V supplies are monitored. When powered
with 3-phase mains voltage, all 3 supplies are monitored.
Troubleshooting
•
Check for a defective power card.
•
Check for a defective control card.
Maintenance, Diagnostics, a...
VLT
®
AutomationDrive FC 301/302
28
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MG33AT02
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