Originally Posted by
Pader
Hi Guys,
I have been rebuilding and rewiring my home built CNC machine and bought a Chinese, 1.5 kW, water cooled spindle. It looks very substantial and thought that it would do what I need it to do. The only trouble is; it came without any wiring instructions for the 3 pin 'Aviation' connector. I bought the item off ebay but the company that I bought it from are no longer listed with ebay. I found out the email address of the company and wrote to them, but as is usual with the Chinese, though promising support; no sign of an answer.
I have tried working out what the connections are using my multimeter but am no better off because each of the pins is showing 4.2 Ohms between any of the other two pins. My thoughts were that if I could find the ground pin, being AC, it would not matter too much whichever way I wired the other two.
There appear to be at least three variations of 1.5 kW motors and so I have included pics of the relevant one.
Has anyone any experience of these? T