Danfoss VLT AQUA Drive FC 202 Operating Manual page 130

Operating Guide | VLT® AQUA Drive FC 202
Symptom Possible cause
Motor not run- Service switch open or miss-
ning ing motor connection.
No mains power with 24 V DC
option card.
LCP stop.
Missing start signal (Standby).
Motor coast signal active
(Coasting).
Wrong reference signal
source.
Motor running Motor rotation limit.
in wrong direc-
tion
Active reversing signal.
Wrong motor phase connec-
tion.
Motor is not Frequency limits set wrong.
reaching maxi-
mum speed
Reference input signal not
scaled correctly.
Motor speed Possible incorrect parameter
unstable settings.
Motor runs Possible overmagnetization.
rough
Motor does not Possible incorrect settings in
brake the brake parameters. Ramp-
down times may be too short.
128 | Danfoss A/S © 2020.01
Test
–
–
–
–
–
Check reference signal:
• Local
• Remote or bus reference?
• Preset reference active?
• Terminal connection correct?
• Scaling of terminals correct?
• Reference signal available?
Check that parameter 4-10 Motor
Speed Direction is programmed
correctly.
Check if a reversing command is
programmed for the terminal in
parameter group 5-1* Digital inputs.
–
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.
Check reference input signal scal-
ing in parameter group 6-0* Analog
I/O mode and parameter group 3-1*
References.
Check the settings of all motor pa-
rameters, including all motor com-
pensation settings. For closed-loop
operation, check PID settings.
Check for incorrect motor settings
in all motor parameters.
Check brake parameters. Check
ramp time settings.
Maintenance, Diagnostics, and
Troubleshooting
Solution
Connect the motor and check the serv-
ice switch.
Apply mains power.
Depending on the operating mode,
press [Auto On] or [Hand On].
Apply a valid start signal.
Apply 24 V on terminal 27 or program
this terminal to [0] No operation.
Program correct settings. Check param-
eter 3-13 Reference Site. Set preset refer-
ence active in parameter group 3-1* Ref-
erences. Check for correct wiring. Check
scaling of terminals. Check reference
signal.
Program correct settings.
Deactivate reversing signal.
Correct motor phase connection, or set
parameter 1-06 Clockwise Direction to [1]
Inverse.
Program correct limits.
Program correct settings.
Check settings in parameter group 1-6*
Load Depen. Setting. For closed-loop
operation, check settings in parameter
group 20-0* Feedback.
Check motor settings in parameter
groups 1-2* Motor data, 1-3* Adv Motor
Data, and 1-5* Load Indep. Setting.
Check parameter groups 2-0* DC Brake
and 3-0* Reference Limits.
AQ275652274277en-000101 / 130R0708