Danfoss VLT Micro Drive FC 51 User Manual

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

Danfoss VLT Micro Drive FC 51 Specifications

General

Enclosure	IP20
Output Voltage	0-100% of supply voltage
Altitude	Up to 1000 m without derating
Power Range	0.18-22 kW
Control Method	V/f
Communication	Modbus RTU
Protection Features	Over-voltage, under-voltage, over-current, over-temperature
Ambient Temperature	-10°C to 50°C
Storage Temperature	-25°C to 65°C
Relative Humidity	5-95% (non-condensing)
Input Voltage	200-240 V, 380-480 V
Braking Function	Integrated braking chopper (optional)