Programming Guide | VLT® AutomationDrive FC 360
Table 25: Warnings and Alarms Code List (continued)
Number Description Warning Alarm Trip lock Cause
16 Short circuit – X X Short circuit in motor or on motor terminals. For J7 units,
if this alarm occurs on power-up, check whether power
cables are mistakenly connected to the motor terminals.
17 Control word timeout X X – No communication to the drive.
18 Start failed – X – –
20 Temp. input error X X – The temperature detected by VLT® Sensor Input Option
MCB 114 exceeds the limit.
22 Hoist mech. brake X X – The torque reference was not reached before timeout.
25 Brake resistor short-cir-
cuited
– X X Brake resistor is short-circuited, thus the brake function is
disconnected.
26 Brake overload X X – 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.
27 Brake IGBT/Brake chop-
per short-circuited
– X X Brake transistor is short-circuited, thus brake function is
disconnected.
28 Brake check – X – Brake resistor is not connected/working.
30 U phase loss – X X Motor phase U is missing. Check the phase.
31 V phase loss – X X Motor phase V is missing. Check the phase.
32 W phase loss – X X Motor phase W is missing. Check the phase.
34 Fieldbus fault X X – PROFIBUS communication issues have occurred.
35 Option fault – X – Fieldbus or option B detects internal faults.
36 Mains failure X X – This warning/alarm is only active if the supply voltage
to the drive is lost and parameter 14-10 Mains Failure is
NOT set to [0] No Function.
38 Internal fault – X X Contact the local supplier.
40 Overload T27 X – – Check the load connected to terminal 27 or remove
short circuit connection.
41 Overload T29 X – – Check the load connected to terminal 29 or remove
short circuit connection.
46 Gate drive voltage fault – X X –
47 24 V supply low X X X 24 V DC may be overloaded.
49 Speed Limit X X – The speed is outside of the specified range in parameter
4-12 Motor Speed Low Limit [Hz] and parameter 4-14
Motor Speed High Limit [Hz].
50 AMA calibration – X – –
51 AMA check U
nom
and
I
nom
– X – Wrong setting for motor voltage and/or motor current.
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