SPEED CONTROL for motors

[Ludovic]

Please write for my any profesional internet adress about the topic : speed control for AC and DC motors.
Thanks, and Happy New Year !
Ludovic

 

[khyassien]

Before you go further and suspect the motor performance it's advisable to carry
out the followings:
-Disconnect the motor connection and test the controller it self to confirm
It’s operation, if the problem still occurring thin used analog signal (current
source 4 to 20 ma) and test controller, if the problem still then replace the
control card which used to firing the Thyristor.
By the way it happens with me 5 years ago and I follow the above and it works