Sprint 400 driver board

[dazp1976]

I might have blown mine up. There was a cascade of errors which led to me basically replacing a lot of the electronics.
I got a second hand board from ebay. It looks identical to the original board, and identical to the ones that I've seen in photos of other Denford micromills. The sprint board has a jumper which lets you set the input voltage to 230V (or 110V) so I'm not sure why you think I need the KB driver.

Your pdf has a typo. This is the proper one:
https://www.transdrive.co.uk/media/1...200-manual.pdf
The sprint 400 is: 110/240 = 90/180
So: 110v = 90v and 240 = 180v

The switch is just an input voltage selector like on a meanwell power supply.
However. Unlike a meanwell, a speed control is relative to it's input.
So if it gets 240v it'll put out 100%. If it gets 110v it'll only put out 50%.
Ergo 180/90.

Unless you have the actual 180v version motor for it I'm afraid you likely need the KB.
(basically a bodged voltage board worked out cheaper to get u.k. sales)

Yours may look the same to others but they'll likely have the 180v motor too.
Like this:
https://www.ebay.com/itm/393622606533



I may have updated previous post too while you responded.