Danfoss VLT FC 102 Instruction Manual page 48

Diagnostics and Troubleshoo...
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, Fieldbus communication fault
The serial communication bus on the communication option
card is not working.
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 supply to the unit.
ALARM 38, Internal fault
When an internal fault occurs, a code number defined in
Table 7.6 is displayed.
Troubleshooting
7 7
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. Replace
power card.
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
1315 Option SW in slot A is not supported (not allowed)
1316 Option SW in slot B is not supported (not allowed)
1379-2819 Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
2561 Replace 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 control
board hardware
46
®
VLT HVAC Drive Instruction Manual
No.
5124
5376-6231
Table 7.6 Internal Fault Codes
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 45, Earth fault 2
Ground fault on start-up.
Troubleshooting
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 supplies
are monitored.
MG11AJ22 - Rev. 2013-09-13
Text
Option in slot B: Hardware incompatible with control
board hardware
Internal fault. Contact your Danfoss supplier or
Danfoss Service Department.
Check for proper grounding and loose connections.
Check for proper wire size.
Check motor cables for short-circuits or leakage
currents.