Danfoss VLT AutomationDrive FC 361 User 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 mains power with 24 V DC
option card.
If the display is functioning, but there is no
output, check that mains power is applied to
the AC drive.
Apply mains power.
LCP Stop. Check if [O] has been pressed. Press [Auto On] or [Hand On] (depending
on operating mode).
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.
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 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 7.3.1 Warning - Motor Start.
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
parameter group 6-0* 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*
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* Adv Motor Data, and
1-5* Load Indep. Setting.
Motor does
not brake
Possible incorrect settings in
the brake parameters. Ramp-
down times may be too short.
Check brake parameters. Check ramp time
settings.
Check parameter groups 2-0* DC Brake and
3-0* Reference Limits.
Maintenance, Diagnostics, a... Operating Guide
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Danfoss VLT AutomationDrive FC 361 Specifications

General

Brand	Danfoss
Model	VLT AutomationDrive FC 361
Category	DC Drives
Language	English