Troubleshooting; Warnings And Alarms - Danfoss VLT Micro Drive FC 51 Series Quick Manual

Quick Guide

1.6 Troubleshooting

1.6.1 Warnings and Alarms

No. Description
2 Live zero error
4 1
Mains phase loss )
7 1
DC overvoltage )
8 1
DC undervoltage )
9 overloaded
10 Motor overtemperature
11 Motor thermistor overtemp.
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 overtemp
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 check U and I
nom nom
52 low I
nom
59 Current limit
63 Mechanical Brake Low
80
84 The connection between drive
and LCP is lost
85 Button disabled
86 Copy fail
87 LCP data invalid
88 LCP data not compatible
89 Parameter read-only
90 Parameter database busy
91 Parameter value is not valid in this
mode
92 Parameter value exceeds the
min/max limits
nw Not While RUNning
run
Err. An incorrect password was
entered
1) These faults may be caused by line power distortions. Installing a Danfoss line filter may rectify this problem.
Table 1.6 Warnings and Alarms Code List
MG02B922
Quick Guide
Warning Alarm Trip Error
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
X
X
X
X
X
X
X
Danfoss A/S © Rev. 2014-02-27 All rights reserved.
Cause of Problem
Signal on terminal 53 or 60 is less than 50% of value set in
6-10 Terminal 53 Low Voltage, 6-12 Terminal 53 Low Currentand
6-22 Terminal 54 Low Current.
Missing phase on the supply side, or a voltage imbalance that is too
high. Check supply voltage.
Intermediate circuit voltage exceeds the limit.
Intermediate circuit voltage drops below the "voltage warning low"
limit.
More than 100% load for too long.
Motor is too hot due to more than 100% load for too long.
The thermistor or the thermistor connection is disconnected.
Torque exceeds value set in either parameter 4-16 Torque Limit
Motor Mode or 4-17Torque Limit Generator Mode.
current limit is exceeded.
Discharge from output phases to ground.
Short-circuit in the motor or on the motor terminals.
No communication to the adjustable frequency drive.
Brake resistor is short-circuited, thus the brake function is discon-
nected.
Brake transistor is short-circuited, thus the brake function is discon-
nected.
Brake resistor is not connected/working
Heatsink cut-out 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 may be overloaded.
Wrong setting for motor voltage and/or motor current.
Motor current is too low. Check settings.
overload.
Actual motor current has not exceeded the "release brake" current
in the "start delay" time window.
No communication between LCP and adjustable frequency drive
See parameter group 0-4* 0-4* LCP
An error occurred while copying from adjustable frequency drive to
LCP or vice versa.
Occurs when copying from LCP if the LCP contains erroneous data -
or if no data was uploaded to the LCP.
Occurs when copying from LCP if data are moved between
adjustable frequency drives with major differences in software
versions.
Occurs when trying to write to a read-only parameter.
LCP and RS485 connection are trying to update parameters simulta-
neously.
Occurs when trying to write an illegal value to a parameter.
Occurs when trying to set a value outside the range.
Parameter can only be changed when the motor is stopped.
Occurs when using an incorrect password for changing a password-
protected parameter.
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