2.2kw spindle, which pin is ground?

[QuinnSjoblom]

The plug on top of my spindle has the 4 pins labeled 1,2,3,4. No idea which 3 are phases and which one is ground.

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[ger21]

The ground is the one that's probably not connected to anything

Measure the resistance between pairs, and you should find the ground pretty quickly.

[QuinnSjoblom]

The ground is the one that's probably not connected to anything

Measure the resistance between pairs, and you should find the ground pretty quickly.

Fair enough. It was pin 4. I honestly did look for my meter before asking hehe. Looked a little harder and found it.

[Al_The_Man]

Confirm that the GND pin is actually continuity to the motor frame, some motors had an open circuit connection.
Al.

[wantacnc]

So I have ben reading up on the ground to the spindle and find out on mine there is no connection on my pin 4 to the spindle. Should I solder on a wire and ground to the metal cap? I am to the point of getting my spindle running and also is this correct for the phases, There were no instructions with my 2.2 spindle.
U=Pin 1
V=Pin 2
W=Pin 3
G=Pin=4 Ground connection this is a must have

Joe

[mactec54]

The plug on top of my spindle has the 4 pins labeled 1,2,3,4. No idea which 3 are phases and which one is ground.

This is what you normally have to do if Pin 4 is not connected P 4 is always Ground for these Spindles

If you only have a 3 Pin Spindle Plug, you can change the Plugs, so you have a correct 4 Pin Plug, or connect the Ground wire to the Spindle Body

So I have ben reading up on the ground to the spindle and find out on mine there is no connection on my pin 4 to the spindle. Should I solder on a wire and ground to the metal cap? I am to the point of getting my spindle running and also is this correct for the phases, There were no instructions with my 2.2 spindle.
U=Pin 1
V=Pin 2
W=Pin 3
G=Pin=4 Ground connection this is a must have

You have to do the same as what I just posted, I see you sniped from one of my posts, the pin information, it is good that they are being read, just these little things can save some grief down the road

[wantacnc]

Thanks for the reply Mactec, Yes I did pull that info from your past post,
I added the ground today to the spindle as you have shown. Now to finish the enclosure and start wiring this controller up
Joe