Help with a usb BOB Spindle problems

[Doddy]

i don't know if i mentioned it properly but it stopped popping the RCD and instead now just trips the breaker actually in the machine.

I think you probably did, but I've forgotten that bit. I can understand your thought process here.

just for reference if i did decide to do the same what motor did you end up replacing it with?

Hah, no, that's a special case. I needed to replace a NEMA34 sized BLDC motor with something that would fit the same space envelope, and give me an easy spindle-speed control (the original Sieg SX BLDC had a very fragile controller card [blown it up twice] that only supported a "speed up" / "speed down" control). In the end I plumped for a Chinese AC servo which gives me a stupidly easy speed control (simple step/dir with electronic gearing).

That's not necessarily a solution for all, but it got me the power/control I wanted into the cast-iron spindle-head enclosure on my SX2.7. Not particularly cheap (£261.11 all-in)... compared to a replacement BLDC controller card (£247.48... fragile as F.. and no easy speed control).

[Lahdiel]

gotcha, think i'll just look for another dc controller since whatever i try and do with the lenze the second it gets power it spins up the spindle and pops the breaker
might try get it working some day but the headache it seems to cause isn't worth the time right now