A
hello, i am currently having problems with burning up contacts on a Allen bradley size 4 contactor. I have a 75hp Baldor SWEO drive powering a 75 hp ac motor. I have been looking into the fact that the contactor is opening up under load, either running or in brake regeneration. But my biggest question has any one else had similer problems using a contactor on the motor side of a ac drive. The way it's currently set up is the contactor is energized when the enable on the drive is set, and opens up when the enable is lost. When the press is e-stopped we have a 5 sec. delay until the contactor opens up. Any information would be
appreciated.
thanks
adrian wilson
appreciated.
thanks
adrian wilson