Danfoss VLT AutomationDrive FC 300 Series Programming Manual Download Page 204

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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 frequency converter is lost and

14-10 Mains Failure

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

Table 5.4

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

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

No.

Text

5376-6231 Internal fault. Contact your Danfoss supplier or

Danfoss Service Department.

Table 5.4 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 43, Ext. supply
MCB 113 Ext. Relay Option is mounted without ext. 24V
DC. Either connect an ext. 24V DC supply or specify that
no external supply is used via

14-80 Option Supplied by

External 24VDC

[0]. A change in

14-80 Option Supplied by

External 24VDC

requires a power cycle.

ALARM 45, Earth fault 2
Earth (ground) fault on start up.

Troubleshooting

Check for proper earthing (grounding) and loose
connections.

Check for proper wire size.

Check motor cables for short-circuits or leakage
currents.

ALARM 46, Power card supply
The supply on the power card is out of range.