Hello,
I am getting a FIELD OVER I alarm on a Parker 590+ drive. I checked the field current with a meter and it seems to be in range so I am concerned that the drive is complaining about the current when it shouldn't be. Is there a troubleshooting guide  I can follow? or does anyone have any 590+ troubleshooting procedure? Thanks!

QUESTION: DC Drive Feedback Selection

My question is how do you determine the best DC drive feedback for your application. Is armature feedback good enough for most variable speed applications? I'm not positioning anything, I am driving a narrow strip of metal through a punching machine at various speeds.

Are Semiconductor fuses polarized? I know it may be a stupid question but I recently purchased Bussman semiconductor fuses for a drive that we are having problems with. I notice the diagram on the side of the fuse that looks like a resistor and diode. Nothing else on the fuse indicates any kind of polarity, but i though i would just ask anyway.

Thanks!
Al