I am hoping some of you on here can help me. I am having a problem with a overhead crane motor. the speed is controlled by progressively shorting out banks of resistors. I need to know how the resistors are connected internally to the motor windings. I have speed control going up but not down. Also any troubleshooting hints. This motor is 480 V 3 Ph. I tried another site but no info. Any help would be appreciated.
