ACS880 EFB speed reference issue
Dear All,
I am controlling ACS880 drives using its embedded fieldbus port.
there is a problem with the speed reference, sometimes (once a week) when i make a slight change( +- 50) the drives don't apply the change although the speed reference changes on the vfd control panel, until i make major change.
Did anyone face similar issue?
Regards,
Abdelrazzaq Hiasat
I am controlling ACS880 drives using its embedded fieldbus port.
there is a problem with the speed reference, sometimes (once a week) when i make a slight change( +- 50) the drives don't apply the change although the speed reference changes on the vfd control panel, until i make major change.
Did anyone face similar issue?
Regards,
Abdelrazzaq Hiasat
Asked 11 months ago
Voted best answer
1
Hi,
Whenever process feedback enters the dead band, a delay timer starts. If the feedback remains within the dead band longer than the delay , the PID controller output is frozen. Normal operation resumes after the feedback value leaves the dead band. So check your dead band.
BR
ATP
Whenever process feedback enters the dead band, a delay timer starts. If the feedback remains within the dead band longer than the delay , the PID controller output is frozen. Normal operation resumes after the feedback value leaves the dead band. So check your dead band.
BR
ATP
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