Danfoss VLT AutomationDrive FC 302 Installation Manual

Symptom Possible cause Test Solution
Motor not running
Service switch open or missing
motor connection
Check if the motor is connected
and the connection is not
interrupted (by a service switch or
other device).
Connect the motor and check the
service switch.
No line power with 24 V DC
option card
If the display is functioning but no
output, check that line power is
applied to the adjustable frequency
drive.
Apply line power to run the unit.
LCP Stop Check if [O] has been pressed Press [Auto On] or [Hand On]
(depending on operation 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 5-12 Coast inv. for correct
setting for terminal 27 (use default
setting).
Apply 24 V 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
parameter 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 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 See chapter 4.6.1 Motor Cable in
this manual
Motor is not reaching
maximum speed
Frequency limits set wrong Check output limits in
parameter 4-13 Motor Speed High
Limit [RPM], 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 6-0* Analog I/O Mode and
parameter group 3-1* References.
Reference limits in parameter group
3-0* Reference Limits.
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* Load Depen. Setting. For
closed-loop operation, check
settings in parameter group 20-0*
Feedback.
Motor runs rough
Possible overmagnetization Check for incorrect motor settings
in all motor parameters
Check motor settings in parameter
groups 1-2* Motor Data, 1-3* Addl.
Motor Data, and 1-5* Load Indep.
Setting.
Status Messages
VLT
®
AutomationDrive FC 302 Low Harmonic Drive
132–630 kW
84 Danfoss A/S © Rev. 04/2015 All rights reserved. MG37A322
77

Danfoss VLT AutomationDrive FC 302 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 302
Category	DC Drives
Language	English