Danfoss VLT AutomationDrive FC 360 Programming Manual page 135

Troubleshooting
NOTICE
After a manual reset pressing [Reset], press [Auto On] to
restart the motor.
An (X) marked in Table 6.2 means that action occurs. A
warning precedes an alarm.
No. Description
2 Live zero error
3 No motor
4 Mains phase loss 1)
7 1)
DC over voltage
8 1)
DC under voltage
9 Inverter overloaded
10 Motor ETR over temperature
11 Motor thermistor over temperature
12 Torque limit
13 Over Current
14 Ground fault
16 Short Circuit
17 Control word timeout
25 Brake resistor short-circuited
26 Brake overload
Brake IGBT/Brake chopper short-
27
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
41 Overload T29
46 Gate drive voltage fault
MG06C402
Programming Guide
A trip lock is an action when an alarm occurs which can
damage the frequency converter or connected equipment.
Power is removed from the motor. A trip lock can only be
reset after a cycling power has cleared the condition. Once
the problem has been rectified, only the alarm continues
flashing until the frequency converter is reset.
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
X X
X X
X X
X X
X X
X
X X
X X
X
X
X X
Danfoss A/S © Rev. 2014-03-31 All rights reserved.
Cause of Problem
Signal on terminal 53 or 54 is less than 50% of value set
in 6-10 Terminal 53 Low Voltage, 6-12 Terminal 53 Low
Current, 6-20 Terminal 54 Low Voltage and 6-22 Terminal 54
Low Current.
No motor has been connected to the output of the
frequency converter.
Missing phase on supply side, or too high voltage
imbalance. Check supply voltage.
Intermediate circuit voltage exceeds limit.
Intermediate circuit voltage drops below "voltage warning
low" limit.
More than 100% load for too long.
Motor is too hot due to more than 100% load for too
long.
Thermistor or thermistor connection is disconnected.
Torque exceeds value set in either 4-16 Torque Limit Motor
Mode or 4-17 Torque Limit Generator Mode.
Inverter peak current limit is exceeded.
Discharge from output phases to ground.
Short-circuit in motor or on motor terminals.
No communication to frequency converter.
Brake resistor is short-circuited, thus brake function is
disconnected.
The power transmitted to the brake resistor over the last
120 s. exceeds the limit. Possible corrections: Decrease
brake energy (lower speed or longer ramp time).
Brake transistor is short-circuited, thus brake function is
disconnected.
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.
Field bus or option B detects internal errors.
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.
Contact local Danfoss supplier.
Check the load connected to terminal 27 or remove short-
circuit connection.
Check the load connected to terminal 29 or remove short-
circuit connection.
6 6
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