No.
Description
Warning
Alarm
Trip lock
Cause
Err.
An incorrect password was
entered
–
–
–
Occurs when using an incorrect password for changing a
password-protected parameter.
Table 8.1 Warnings and Alarms Code List
1) These faults may be caused by line power distortions. Installing a Danfoss line filter may rectify this problem.
For diagnosis, read out the alarm words, warning words, and extended status words.
8.5 Troubleshooting
Symptom
Possible cause
Test
Solution
Motor not running
LCP stop
Check if [Off] has been pressed.
Press [Auto On] or [Hand On]
(depending on operating mode) to
run the motor.
Missing start signal (standby)
Check
parameter 5-10 Terminal 18
Digital Input
for correct setting for
terminal 18 (use default setting).
Apply a valid start signal to start the
motor.
Motor coast signal active (coasting)
Check
parameter 5-12 Terminal 27
Digital Input
for correct setting for
terminal 27 (use default setting).
Apply 24 V on terminal 27 or
program this terminal to
[0] No
operation.
.
Wrong reference signal source
Check the following:
•
The reference signal is local,
remote or bus reference?
•
Preset reference is active?
•
Terminal connection is correct?
•
The scaling of terminals is correct?
•
The reference signal is available?
Program correct settings. Set preset
reference active in parameter group
3-1* References
. Check for correct
wiring. Check scaling of terminals.
Check reference signal.
Motor is running in
the wrong direction.
Motor rotation limit
Check that
parameter 4-10 Motor
Speed Direction
is programmed
correctly.
Program correct settings.
Active reversing signal
Check if a reversing command is
programmed for the terminal in
parameter group
5-1* Digital inputs.
Deactivate reversing signal.
Wrong motor phase connection
Change
parameter 1-06 Clockwise
Direction
.
Motor is not
reaching maximum
speed
Frequency limits are set incorrectly
Check output limits in
parameter 4-14 Motor Speed High Limit
[Hz]
and
parameter 4-19 Max Output
Frequency
.
Program correct limits.
Reference input signal not scaled
correctly
Check reference input signal scaling in
6-** Analog I/O mode
and parameter
group
3-1* References
.
Program correct settings.
Motor speed is
unstable
Possible incorrect parameter settings
Check the settings of all motor
parameters, including all motor
compensation settings. For closed-
loop operation, check PID settings.
Check settings in parameter group
6-
** Analog I/O mode
.
Motor runs roughly. Possible overmagnetization
Check for incorrect motor settings in
all motor parameters.
Check motor settings in parameter
groups
1-2* Motor data, 1-3* Adv
motor data
and
1-5* Load indep.
setting.
Maintenance, Diagnostics an...
VLT
®
Midi Drive FC 280
46
Danfoss A/S © 11/2015 All rights reserved.
MG07A122
8
8