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Old March 7th, 2018, 06:40 PM   #1
United States

AlexDB is offline
Join Date: Mar 2018
Location: TX
Posts: 8
Ultra3000 Drive not Enabling.

Greetings All!

Preface: I am a complete "fresh out of the womb"-type novice when it comes to PLC programming. I helped get a Logix 500 PLC up and running with a few notes of documentation and a whoooole lot of Google-ing. After that, I was thrown into running and maintaining a retro-fitted machine backed by a Logix5555 PLC. It was running smoothly with a few missteps here and there but now I'm about at wit's end with my current problem.

Our machine has 3 Ultra3000 servo drives and they are for the x, y, and z axes. We had a fault in our x-axis drive saying that there was an overtemp/commutation error in the motor. We got an AB technician out here and they traced it back to the drive and cable being bad so we had them both replaced. Upon installing the new parts, I am now running into a problem where I cannot enable the X-axis servo drive.

Any help would be greatly appreciated!
- Alex

Additional details:
- The drive status is "4", the Network Status light is solid green, and the module status light is flashing green.
- In the RSLogix file, the MSO motion instruction is at "ER" but I'm not sure how to figure out why it says that.
- I have tried switching the encoder cable to the other two motors and it still comes up with the same thing, so I don't think it's a motor issue.

EDIT: Okay, so I have done a little more digging and found that my XaxisMotionInst[1].ERR value is set to "40" and if I am reading this correctly, that means that the drive is locally disabled. I tried finding the "Drive Enable Input" checkbox in the axis properties and could not find it.

Once again, thanks for any help that can be given and pardon my ignorance when it comes to PLCs.

Last edited by AlexDB; March 7th, 2018 at 06:46 PM. Reason: Additional details
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