Danfoss VLT Micro Drive FC 51 - Page 25

Number
Description
Warn-
ing
Alarm
Trip
lock
Er-
ror
Cause of problem
51
AMA check U
nom
and
I
nom
X
Wrong setting for motor voltage and/or motor current.
52
AMA low I
nom
X
The motor current is too low. Check the settings.
59
Current limit
X
The drive overload.
63
Mechanical brake low
X
Actual motor current has not exceeded the release
brake current within the start delay time window.
80
Drive initialized to de-
fault value
X
All parameter settings are initialized to default settings.
84
The connection be-
tween drive and LCP is
lost
X
No communication between LCP and drive.
85
Key disabled
X
See parameter group 0-4* LCP.
86
Copy fail
X
An error occurred while copying from drive to LCP, or
from LCP to drive.
87
LCP data invalid
X
Occurs when copying from LCP if the LCP contains er-
roneous data - or if no data was uploaded to the LCP.
88
LCP data not compati-
ble
X
Occurs when copying from LCP if data are moved be-
tween drives with major dierences in software ver-
sions.
89
Parameter read only
X
Occurs when trying to write to a read-only parameter.
90
Parameter database
busy
X
LCP and RS485 connection are trying to update param-
eters simultaneously.
91
Parameter value is not
valid in this mode
X
Occurs when trying to write an illegal value to a param-
eter.
92
Parameter value ex-
ceeds the minimum/
maximum limits
X
Occurs when trying to set a value outside the range.
nw run
Not while running
X
Parameters can only be changed when the motor is
stopped.
Err.
A wrong password was
entered
X
Occurs when using a wrong password for changing a
password-protected parameter.
1
These faults are caused by mains distortions. Install a Danfoss line lter to rectify this problem.
AQ348848915086en-000101 / 130R0943 | 25Danfoss A/S © 2020.09
Troubleshooting
VLT® Micro Drive FC 51
Operating Guide