ALARM 29, Heatsink temp
The maximum temperature of the heatsink has been
exceeded. The temperature fault will not be reset until the
temperature falls below a defined heatsink temperature.
The trip and reset point are different based on the filter
power size.
See
for trip levels.
Troubleshooting:
•
Ambient temperature too high.
•
Incorrect clearance above and below the unit.
•
Dirty heatsink.
•
Blocked air flow around the unit.
•
Damaged heatsink fan.
ALARM 33, Inrush fault
Too many power-ups have occurred within a short time
period. Let the unit cool to operating temperature.
WARNING/ALARM 34, Serial communication bus communi-
cation fault
The serial communication bus on the communication
option card is not working.
ALARM 38, Internal fault
When an internal fault occurs, a code number defined in
the table below is displayed.
Troubleshooting
Cycle power
Check that the option is properly installed
Check for loose or missing wiring
It may be necessary to contact your Danfoss supplier or
service department. Note the code number for further
troubleshooting directions.
No.
Text
0
Serial port cannot be initialized. Contact your
Danfoss supplier or Danfoss Service Department.
256-258
Power EEPROM data is defective or too old
512-519
Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
783
Parameter value outside of min/max limits
1024-1284 Internal fault. Contact your Danfoss supplier or the
Danfoss Service Department.
1299
Option SW in slot A is too old
1300
Option SW in slot B is too old
1302
Option SW in slot C1 is too old
1315
Option SW in slot A is not supported (not allowed)
1316
Option SW in slot B is not supported (not allowed)
1318
Option SW in slot C1 is not supported (not
allowed)
No.
Text
1379-2819 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
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
control board hardware
5124
Option in slot B: Hardware incompatible with
control board hardware
5125
Option in slot C0: Hardware incompatible with
control board hardware
5126
Option in slot C1: Hardware incompatible with
control board hardware
5376-6231 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
Table 4.4
ALARM 39, Heatsink sensor
No feedback from the heatsink 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 gate drive card, or the ribbon cable between the
power card and gate drive card.
WARNING 40, Overload of digital output terminal 27
Check the load connected to terminal 27 or remove short-
circuit connection. Check
5-00 Digital I/O Mode
and
5-01 Terminal 27 Mode
.
WARNING 41, Overload of digital output terminal 29
Check the load connected to terminal 29 or remove short-
circuit connection. Check
5-00 Digital I/O Mode
and
5-02 Terminal 29 Mode
.
WARNING 42, Overload of digital output on X30/6 or
overload of digital output on X30/7
For X30/6, check the load connected to X30/6 or remove
the short-circuit connection. Check
5-32 Term X30/6 Digi
Out (MCB 101)
.
For X30/7, check the load connected to X30/7 or remove
the short-circuit connection. Check
5-33 Term X30/7 Digi
Out (MCB 101)
.
ALARM 46, Power card supply
The supply on the power card is out of range.
There are three power supplies generated by the switch
mode power supply (SMPS) on the power card: 24 V, 5 V,
+/- 18 V. When powered with 24 V DC with the MCB 107
option, only the 24 V and 5 V supplies are monitored.
When powered with three-phase AC line voltage, all three
supplied are monitored.
Troubleshooting
VLT Advanced Active Filter AAF006 D and E Frames Service Manual
4-8
MG90Z122 - VLT
®
is a registered Danfoss trademark
4
4
