Danfoss VLT FC 280 Operating Manual page 110

VLT® Midi Drive FC 280
Operating Guide
Number Description
13 Overcurrent
14 Ground fault
16 Short circuit
17 Control word time-
out
25 Brake resistor short-
circuited
26 Brake overload
27 Brake IGBT/Brake
chopper short-
circuited
28 Brake check
30 U phase loss
31 V phase loss
32 W phase loss
34 Fieldbus fault
35 Option fault
36 Mains failure
38 Internal fault
40 Overload T27
46 Gate drive voltage
fault
47 24 V supply low
49 Speed limit
110 | Danfoss A/S © 2022.02
Warning Alarm Trip
lock
X X X
– X X
– X X
X X –
– X X
X X –
– X X
– X –
– X X
– X X
– X X
X X –
– X –
X X –
– X X
X – –
– X X
X X X
– X –
Cause
Inverter peak current limit is exceeded. If this alarm occurs on
power-up, check whether power cables are mistakenly connec-
ted to the motor terminals.
Discharge from output phases to ground.
Short circuit in motor or on motor terminals.
No communication to the drive.
Brake resistor is short-circuited, thus the brake function is dis-
connected.
The power transmitted to the brake resistor over the last 120 s
exceeds the limit. Possible corrections: Decrease brake energy
via lower speed or longer ramp time.
Brake transistor is short-circuited, thus brake function is discon-
nected.
Brake resistor is not connected/working.
Motor phase U is missing. Check the phase.
Motor phase V is missing. Check the phase.
Motor phase W is missing. Check the phase.
PROFIBUS communication issues have occurred.
Fieldbus detects internal faults.
This warning/alarm is only active if the supply voltage to the
drive is less than the value set in parameter 14-11 Mains Fault
Voltage Level, and parameter 14-10 Mains Failure is NOT set to
[0] No Function.
Contact the local supplier.
Check the load connected to terminal 27 or remove short-cir-
cuit connection.
–
24 V DC may be overloaded.
The motor speed is below the specified limit in parameter 1-87
Trip Speed Low [Hz].
Maintenance, Diagnostics, and
Troubleshooting
AQ381425076031en-000101 / 130R1223