Scope-meters can do almost anything a tech needs

Shihlin drives aren't that popular

What is reverse torque?

The torque applied in the direction opposite to the motor shaft rotation. Reverse torque is literally a decelerating force on the motor and its external load.

I know this is an old post and I hope you resolved it by now, but are all 5 motors on the same circuit? or are there five individual GFCI's?

Do conveyors need to stop completely before changing direction?

Anyone have an abbreviated list of faults for the Micromaster drives or motor controllers? Having some issues, looking for a list of micromaster faults.

Quote from: aaronw on August 20, 2016, 05:19:AM
I don't have a motor megger, but I have tested motor windings and solved problems in the past using just an ohmmeter. I will try the other tests you suggest, I have to get to the bottom of this quickly.

Looks like problem solved. It was not an alarm caused by a faulty drive after all. The field fail alarm was brought on by a crushed conduit that had been run between two control panels. The panels shifted at some point this week, whether it was  a forklift or some other unknown force, the conduit got crushed and it must have broken at least one wire leading to the motor field winding. Fixed and back in service.

Thanks for the pointers, lesson learned...

I don't have a motor megger, but I have tested motor windings and solved problems in the past using just an ohmmeter. I will try the other tests you suggest, I have to get to the bottom of this quickly.

Yes. I like to look at the condition of the connections so I take the Ohms reading right at the motor.

(Also, I wonder if anyone can post the complete alarm list for the 590+ SSD drives. I see they are listed on the site here for other older Parker drives.)

I verified continuity of the field winding with an ohmmeter. It checks good with no ground at all.

Field Fail!

Hello all,
I have an SSD drive Cat# 955-8R0060. It is the 590+ series. I am getting a Field fail Trip Alarm. I feel like the motor is good so I am suspecting the driver has failed internally. Any thoughts if the drive would be repairable or if I should look at replacing it.

Thanks,
Aaron