Danfoss VLT FC 280 Operating Manual page 117

Operating Guide | VLT® Midi Drive FC 280
Table 59: Warnings and Alarms Code List
Number Description
17 Control word time-
out
25 Brake resistor
short-circuited
26 Brake overload
27 Brake IGBT/Brake
chopper short-cir-
cuited
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
50 AMA calibration
failed
51 AMA check U
and I
nom
52 AMA low I
nom
53 AMA big motor
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(continued)
Warning Alarm
X X
– X
X X
– X
– X
– X
– X
– X
X X
– X
X X
– X
X –
– X
X X
– X
– X
– X
nom
– X
– X
Maintenance, Diagnostics, and Troubleshooting
Trip Cause
lock
– No communication to the drive.
X 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.
X Brake transistor is short-circuited, thus the brake function is
disconnected.
– Brake resistor is not connected/working.
X Motor phase U is missing. Check the phase.
X Motor phase V is missing. Check the phase.
X Motor phase W is missing. Check the phase.
– Fieldbus 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.
X Contact the local supplier.
– Check the load connected to terminal 27 or remove short-cir-
cuit connection.
X –
X 24 V DC may be overloaded.
– The motor speed is below the specified limit in parameter 1-87
Trip Speed Low [Hz].
– A calibration error has occurred.
– Wrong setting for motor voltage and/or motor current.
– Motor current is too low. Check the settings.
– The power size of the motor is too large for the AMA to oper-
ate.
AQ381425076031en-000201 / 130R1223 | 117