Troubleshooting - Danfoss VLT Micro Drive FC 51 Guide Rapide

Quick Guide

1.6 Troubleshooting

1.6.1 Warnings and Alarms
Number Description
2 Live zero error
4
1)
Mains phase loss
7
DC over voltage 1)
8 1)
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 timeout
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 and I
nom
52 AMA low I
nom
59 Current limit
63 Mechanical brake low
80 Frequency converter initialized
to default value
84 The connection between
frequency converter and LCP
is lost
85 Key disabled
86 Copy fail
87 LCP data invalid
MG02BC4P
Quick Guide•Kurzanleitung•Guide rapide•Guía rápida•Guia Rápido•Краткое
руководство
Warnin Alarm Trip
g 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
nom
X
X
X
X
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Error Cause of problem
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.
Missing phase on supply side, or too high voltage imbalance.
Check supply voltage.
DC-link voltage exceeds the limit.
DC-link voltage drops below the voltage warning limit.
More than 100% load for too long.
Motor is too hot. The load has exceeded 100% for too long.
Thermistor or thermistor connection is disconnected.
Torque exceeds value set in either parameter 4-16 Torque Limit
Motor Mode or parameter 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 the brake function is
disconnected.
Brake transistor is short-circuited, thus the brake function is
disconnected.
Brake resistor is not connected/working.
Heat sink cutout temperature has been reached.
Motor phase U is missing. Check the phase.
Motor phase V is missing. Check the phase.
Motor phase W is missing. Check the phase.
Contact local Danfoss supplier.
Discharge from output phases to ground.
24 V DC is overloaded.
Wrong setting for motor voltage and/or motor current.
Motor current is too low. Check settings.
Frequency converter overload.
Actual motor current has not exceeded the release brake-
current within the start delay-time window.
All parameter settings are initialized 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.
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