Danfoss VLT Micro Drive FC 51 User Manual

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6 Troubleshooting
6.1 Warnings and Alarms
Table 11: Warnings and Alarms
Number
Description
Warn-
ing
Alarm
Trip
lock
Er-
ror
Cause of problem
2
Live zero error
X
X
Signal on terminal 53 or 54 is less than 50% of the val-
ue set in:
Parameter 6-10 Terminal 53 Low Voltage.
Parameter 6-12 Terminal 53 Low Current.
Parameter 6-22 Terminal 54 Low Current.
4
Mains phase loss
(1)
X
X
X
Missing phase on the supply side or too high voltage
imbalance. Check the supply voltage.
7
DC overvoltage
(1)
X
X
DC-link voltage exceeds the limit.
8
DC undervoltage
(1)
X
X
DC-link voltage drops below voltage warning low-limit.
9
Inverter overload
X
X
More than 100% load for a long time.
10
Motor ETR overtemper-
ature
X
X
Motor is too hot due to more than 100% load for a long
time.
11
Motor thermistor over-
temperature
X
X
Thermistor or thermistor connection is disconnected.
12
Torque limit
X
Torque exceeds value set in either parameter 4-16 Tor-
que Limit Motor Mode or parameter 4-17 Torque Limit
Generator Mode.
13
Overcurrent
X
X
X
Inverter peak current limit is exceeded.
14
Ground fault
X
X
X
Discharge from output phases to ground.
16
Short circuit
X
X
Short circuit in motor or on motor terminals.
17
Control word timeout
X
X
No communication to drive.
25
Brake resistor short-
circuited
X
X
Brake resistor is short-circuited, thus the brake function
is disconnected.
27
Brake chopper short-
circuited
X
X
Brake transistor is short-circuited, thus the brake func-
tion is disconnected.
28
Brake check
X
Brake resistor is not connected/working.
29
Power board over temp
X
X
X
Heat sink cutout temperature has been reached.
30
Motor phase U missing
X
X
Motor phase U is missing. Check the phase.
31
Motor phase V missing
X
X
Motor phase V is missing. Check the phase.
32
Motor phase W missing
X
X
Motor phase W is missing. Check the phase.
38
Internal fault
X
X
Contact the local Danfoss supplier.
44
Ground fault
X
X
Discharge from output phases to ground.
47
Control voltage fault
X
X
24 V DC supply is overloaded.
AQ348848915086en-000101 / 130R094324 | Danfoss A/S © 2020.09
Troubleshooting
VLT® Micro Drive FC 51
Operating Guide

Danfoss VLT Micro Drive FC 51 Specifications

General

Brand	Danfoss
Model	VLT Micro Drive FC 51
Category	DC Drives
Language	English