Alarm 32, Motor Phase W Missing; Warning/Alarm 36, Mains Failure; Alarm 38, Internal Fault; Warning/Alarm 35, Option Fault - Danfoss VLT AutomationDrive FC 302 Programming Manual

Troubleshooting
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to use qualified personnel to install, start up, and
maintain the frequency converter can result in death or
serious injury.
•
Disconnect power before proceeding.
Troubleshooting
•
Remove the power from the frequency converter
and check motor phase V.

ALARM 32, Motor phase W missing

6 6
Motor phase W between the frequency converter and the
motor is missing.
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to use qualified personnel to install, start up, and
maintain the frequency converter can result in death or
serious injury.
•
Disconnect power before proceeding.
Troubleshooting
•
Remove the 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.
Troubleshooting
•
Let the unit cool to operating temperature.
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 is lost and parameter 14-10 Mains Failure is not
set to [0] No function.
Troubleshooting
•
Check the fuses to the drive and mains supply to
the unit.
ALARM 37, Phase imbalance
There is a current imbalance between the power units.
334
®
VLT AutomationDrive FC 301/302

ALARM 38, Internal fault

When an internal fault occurs, a code number defined in
Table 6.5 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
256–258
512–519
783
1024–1284
1299
1300
1302
1315
1316
1318
1379–2819
1792
1793
1794
1795
1796
1798
2561
2820
2821
2822
3072–5122
5123
Danfoss A/S © 10/2018 All rights reserved.
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.
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
The option software in slot A is too old.
The option software in slot B is too old.
The option software in slot C1 is too old.
The option software in slot A is not supported/
allowed.
The option software in slot B is not supported/
allowed.
The option software in slot C1 is not supported/
allowed.
Internal fault. Contact the Danfoss supplier or
Danfoss service department.
Hardware reset of digital signal processor.
Motor-derived parameters not transferred correctly
to the digital signal processor.
Power data not transferred correctly at power-up
to the digital signal processor.
The digital signal processor has received too many
unknown SPI telegrams. The AC drive 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.
RAM copy error.
Software version 48.3X or newer is used with MK1
control card. Replace with MKII issue 8 control
card.
Replace the control card.
LCP stack overflow.
Serial port overflow.
USB port overflow.
Parameter value is outside its limits.
Option in slot A: Hardware incompatible with the
control board hardware.
MG33MP02