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I have an Okuma MC-50A machining center with an OSP 5020M controller. The overcurrent LED came on the Z axis drive and would not clear. I sent the drive in for repair. While the drive was out I...

I recently purchased a MC-50VA mill with a OSP5020M controller that has not run in several years. On power up we had several drives that had faults that needed to be removed and serviced. Also...

Algirdas,
Looking closer at the components that you suggested. The SF3B41 is a thyristor. The C84 is a diode and it checked continuity in one direction and open in the other so I am going to...

Algirdas,
Here are a couple of close up pictures of the area that you circled. I know that my eyes are getting bad but I just don't see a fuse in that area. I hope you can shed some light on it...

Thanks for the input. Unfortunately I don't have another spindle drive to switch out with my current drive so it looks like I am going to have to get it powered up so it can communicate before I can...

Well, let me try this again. I thought that I had added the pictures to my posts.
Thanks,
David
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We recently purchased a MC-50A Machining Center that has not run in several years. I knew that there were issues with the VAC 3 drive when I purchased the machine. I have recently got the machine...

We recently purchased a MC-50VA machining center that has not run in several years. I know that I have an issue with the VAC 3 spindle drive because no power light comes on the drive when I power...

I work in a plant where we have several hydraulic systems. We always seem to be fighting hydraulic leaks. One system in particular we keep replacing o-rings between a valve with a DO5 pattern and...

aike, thanks for the schematics and files. I will try and get the schematics translated but I have a pretty good idea of how you went about your retrofit. If anymore of you have some schematics...

I have acquired an old Hypertherm Max100 plasma torch. I basically got it for free because they were not sure that the unit worked. When I powered it up everything seemed fine and when I tried to...

PCW_MESA
Thanks for the input. I will go to your website and look at your cards. I am sure that I will have plenty of questions for you as I get further into this project. By the way, I have...

I have a Hurco KM-3 mill with Ultimax 3 controller, Servomate SM1090-1110C servo driver and Electro Craft Corp servo motors. The Ultimax controller is no longer functional but I believe my servo...

Hi,
I am working on a Hurco KM3, trying to bring it back to life after several years in storage. The control boots up and I can move all three axis but I can only move the cursor in the horizontal...

You are correct that the opto pulses when it sees a clear spot on the disk. What I saw on the scope with the computer mouse is a pulse even when the mouse was not moving. I wasn't very clear on my...

Hi,
I am working on a Hurco KM3, trying to bring it back to life after several years in storage. The control boots up and I can move all three axis but I can only move the cursor in the horizontal...