frequency converters, this alarm can also be caused by the
thermal sensor in the rectifier module.
Check fan resistance
Check soft charge fuses
IGBT thermal
ALARM 30, Motor phase U missing
Motor phase U between the frequency converter and the
motor is missing.
Remove power from the frequency converter and check
motor phase U.
ALARM 31, Motor phase V missing
Motor phase V between the frequency converter and the
motor is missing.
Remove power from the frequency converter and check
motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the frequency converter and the
motor is missing.
Remove power from the frequency converter and check
motor phase W.
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, communication fault
The fieldbus on the communication option card is not
working.
WARNING 35, Out of frequency range
This warning is active if the output frequency has reached
4-52 Warning Speed Low
or
4-53 Warning Speed High
. If the
frequency converter is set to closed loop [3] in
1-00 Config-
uration Mode
, the warning is active in the display. If the
frequency converter is not in this mode bit 008000 Out of
frequency range in extended status word is active but
there is no warning in the display.
WARNING/ALARM 36, Mains failure
This warning/alarm is only active if the supply voltage to
the frequency converter is lost and
14-10 Mains Failure
is
NOT set to [0]
No Function
. Check the fuses to the
frequency converter and mains power supply to the unit.
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
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 initialised. 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)
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.
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)
.
Troubleshooting
High Power Service Manual for Modular F Frame Drives
70
MG90K202 - VLT
®
is a registered Danfoss trademark
4
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