[dstrittmatter]

Hi I have a 1986 leadwell mcv550 with M0 control. The VFD is bad, seI01 board is looking to be the problem. Im fairly good with electronics and i'd like some opinions/thoughts on upgrading to a newer VFD. This one is a FR-SE 7.5k Should I upgrade or get another FR-SE so I have parts for future. I just hate to spend money on this drive if its not worth it. Thanks in advance to all that reply. If anyone has parts for sale let me know.

[Al_The_Man]

If you go with a VFD, I would get the feedback option as your SP motor should have the P.W. feedback on it?
Al.

[dstrittmatter]

It must have some sort of feed back for spindle orientation right? It has a tool changer and can do tapping functions. I just get a lil nervous because there are quite a bit of small wires coming from the original vfd.

[Al_The_Man]

There usually is a feed back from the motor itself and either/or an encoder on the spindle or just an orientation sensor for tool changing.
If it has tapping option then there should be an encoder on the spindle?
Al.

[onthebumper]

Have you talked to Mitsubishi yet. In most cases they can repair the whole drive or just the board. Not sure about pricing but should be a lot less aggravation then trying to retro-fit a new VFD in there.