Warning/Alarm 34, Fieldbus Communication Fault; Warning/Alarm 36, Mains Failure; Internal Fault List; Warning 40, Overload Of Digital Output Terminal 27 - Danfoss VLT Midi Drive FC 280 Programming Manual

Troubleshooting
Troubleshooting
•
Remove power from the frequency converter and
check motor phase W.

WARNING/ALARM 34, Fieldbus communication fault

The fieldbus on the communication option card is not
working.
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 frequency converter is lost and parameter 14-10 Mains
Failure is not set to [0] No Function.
Troubleshooting
•
Check the fuses to the frequency converter and
mains supply to the unit.
ALARM 38, Internal fault
When an internal fault occurs, a code number is shown.
Troubleshooting
See Table 6.4 for the causes and solutions for different
internal faults. If the fault persists, contact the Danfoss
supplier or service department for assistance.
Fault
Cause
number
Power board
140–142
EEPROM data error
The firmware in the
frequency converter
176
does not match the
frequency converter.
Flash ROM
256
checksum error
Firmware mismatch
between the control
2304
card and the power
card.
Communication
error between the
2560
control card and the
power card.
Serial flash version
3840
error
MG07C302
Programming Guide
Solution
Upgrade the software in the
frequency converter to the
latest version.
Upgrade the software in the
frequency converter to the
latest version.
Upgrade the software in the
frequency converter to the
latest version.
Upgrade the software in the
frequency converter to the
latest version.
Upgrade the software in the
frequency converter to the
latest version. If the alarm
occurs again, check the
connection between the
control card and the power
card.
Upgrade the software in the
frequency converter to the
latest version.
Danfoss A/S © 07/2016 All rights reserved.
Fault
Cause
number
Frequency converter
4608
power size error
Option hardware
5632
version error
Option software
5888
version error
The option is not
6144
supported
The option
6400
combination error
Other Other internal faults
Table 6.4 Internal Fault List

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.
ALARM 46, Power card supply
The supply for the gate drive on the power card is out of
range. It is generated by the switch mode supply (SMPS)
on the power card.
Troubleshooting
•
Check for a defective power card.
WARNING 47, 24 V supply low
The 24 V DC is measured on the control card. This alarm
appears when the detected voltage of terminal 12 is lower
than 18 V.
Troubleshooting
•
Check for a defective control card.
WARNING 49, Speed limit
When the speed is below the specified limit in
parameter 1-87 Trip Speed Low [Hz] (except when starting or
stopping) over 2 s, the frequency converter trips with this
alarm.
ALARM 50, AMA calibration failed
A calibration error has occurred. Contact a Danfoss supplier
or the Danfoss Service Department.
Solution
Upgrade the software in the
frequency converter to the
latest version. If the alarm
occurs again, contact a Danfoss
supplier.
The hardware version of the
option or the fieldbus variant is
not compatible with the
frequency converter software.
The software version of the
option or the fieldbus variant is
not compatible with the
frequency converter software.
Change either the fieldbus
software or the frequency
converter software.
Check if the product supports
this option.
Remove the option.
Power cycle the frequency
converter. If the alarm occurs
again, contact a Danfoss
supplier.
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