Danfoss VLTAutomationDrive FC 360 User Manual

7 Basic Troubleshooting and FAQs
7.1 Start Up and Operation
Symptom Possible Cause Test Solution
Motor not running
LCP Stop Check if [Off] has been pressed. Press [Auto On] or [Hand On]
(depending on operation mode) to
run the motor.
Missing start signal (Standby)
Check 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 5-12 Coast inv. for correct
setting for terminal 27 (use default
setting).
Apply 24V on terminal 27 or
program this terminal to No
operation.
Wrong reference signal source Check reference signal: Local,
remote or bus reference? Preset
reference active? Terminal
connection correct? Scaling of
terminals correct? Reference signal
available?
Program correct settings. Check
3-13 Reference Site. Set preset
reference active in parameter
group 3-1* References. Check for
correct wiring. Check scaling of
terminals. Check reference signal.
Motor running in wrong
direction
Motor rotation limit
Check that 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
See in this manual.
Motor is not reaching
maximum speed
Frequency limits set wrong
Check output limits in 4-14 Motor
Speed High Limit [Hz] and 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 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
1-6* Analog I/O mode.
Motor runs rough
Possible over-magnetization 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.
Motor will not brake
Possible incorrect settings in the
brake parameters. Possible too
short ramp down times.
Check brake parameters. Check
ramp time settings.
Check parameter group2-0* DC
brake and 3-0* Reference limits.
Basic Troubleshooting and F...
VLT
®
AutomationDrive FC 360 Quick Guide
34 MG06A102 - VLT
®
is a registered Danfoss trademark
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Danfoss VLTAutomationDrive FC 360 Specifications

General

Brand	Danfoss
Model	VLTAutomationDrive FC 360
Category	Controller
Language	English