Quick Guide
1
1
1.6 Troubleshooting
1.6.1 Warnings and Alarms
Number Description
2
Live zero error
4
Mains phase loss
7
DC over voltage
8
DC under voltage
9
Inverter overloaded
10
Motor ETR overtemperature
11
Motor thermistor overtem-
perature
12
Torque limit
13
Overcurrent
14
Ground fault
16
Short Circuit
17
Control word time-out
25
Brake resistor short-circuited
27
Brake chopper short-circuited
28
Brake check
29
Power board over temp
30
Motor phase U missing
31
Motor phase V missing
32
Motor phase W missing
38
Internal fault
44
Ground fault
47
Control Voltage Fault
51
AMA check U
52
AMA low I
59
Current limit
63
Mechanical Brake Low
80
Frequency Converter Initialised
to Default Value
84
The connection between
frequency converter and LCP is
lost
85
Key disabled
86
Copy fail
87
LCP data invalid
20
®
VLT
Warning
X
X
1)
X
1)
1)
X
X
X
X
X
X
X
X
X
and I
nom
nom
nom
X
Danfoss A/S © 05/2016 All rights reserved.
Micro Drive FC 51
Alarm
Trip
Error
Cause of problem
Lock
X
Signal on terminal 53 or 60 is less than 50% of the value set
in:
•
parameter 6-10 Terminal 53 Low Voltage
•
parameter 6-12 Terminal 53 Low Current
•
parameter 6-22 Terminal 54 Low Current
X
X
Missing phase on supply side, or too high voltage imbalance.
Check supply voltage.
X
DC-link voltage exceeds the limit.
X
DC-link voltage drops below the voltage warning limit.
X
More than 100% load for too long.
X
Motor is too hot. The load has exceeded 100% for too long.
X
Thermistor or thermistor connection is disconnected.
Torque exceeds value set in either parameter 4-16 Torque Limit
Motor Mode or 4-17Torque Limit Generator Mode.
X
X
Inverter peak current limit is exceeded.
X
X
Discharge from output phases to ground.
X
X
Short circuit in motor or on motor terminals.
X
No communication to frequency converter.
X
X
Brake resistor is short-circuited, thus the brake function is
disconnected.
X
X
Brake transistor is short-circuited, thus the brake function is
disconnected.
X
Brake resistor is not connected/working.
X
X
Heat sink cut-out temperature has been reached.
X
X
Motor phase U is missing. Check the phase.
X
X
Motor phase V is missing. Check the phase.
X
X
Motor phase W is missing. Check the phase.
X
X
Contact local Danfoss supplier.
X
X
Discharge from output phases to ground.
X
X
24 V DC is overloaded.
X
Wrong setting for motor voltage and/or motor current.
X
Motor current is too low. Check settings.
Frequency converter overload.
X
Actual motor current has not exceeded the release brake-
current within the start delay-time window.
X
All parameter settings are initialised to default settings.
X
No communication between LCP and frequency converter.
X
See parameter group 0-4* LCP.
X
An error occurred while copying from frequency converter to
LCP, or from LCP to frequency converter.
X
Occurs when copying from LCP if the LCP contains erroneous
data - or if no data was uploaded to the LCP.
MG02BB4P