Dear all ,
I have drive 590 35 A for DC motor 8.3 KW , non drive bearing was damaged cause S.C between field and armature and cause fuse burnt out and when run drive without load feeding fuse burnt again
after repair drive by changing power module test the drive with motor
motor run for 1 sec & alarm appeared field failed , although field resistance till F+ and F- drive terminal was 168 ohm "healthy"
is this problem at drive field circuit or something else ,