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"New" used inverter arrived on Thursday. Installed and tested. Working like new again. Will see about rebuilding the old drive. I have a feeling one of the output drivers failed, since there is a...

Well, the new CAPs didn't fix the inverter. Obtaining another "Working unit".

Wish me luck!

Mine is set up with the 2500 RPM Mill spindle. I do both edge and angle mill drill operations. So I'll keep it at 2500. I know there was simply a pulley belt change and a parameter change between...

Thanks for the offer. The only manual I'm looking for is for the National DV-503 VFD. I do have a Japanese version, which I've been translating with both the computer and a phone app..lol. Not at...

This one is an '85 model. The Schematics state a DV-503 is used. I know Mazak changed the mill spindle controller a few times. Eventually combining it with the main spindle controller.

I have a...

Yes a T-3. I'm referring to spindle for live tooling. The inverter is housed in the upper control cabinet, not the lower. This National is OEM.

Found a used one in Ebay. No paperwork. And...

I'm looking for a download link for the installation/ operation manual for a National DV-503 inverter. This inverter runs the Mill spindle located on the X-axis. The motor even when the belts are...