Newbie- Bridgeport Dual Voltage Help Needed

[JQ_Quint]

I've bought a bridgeport which has the 2J head and a dual voltage 1.5hp motor. I've now got an invertor to allow me to connect up and use 240 three phase. Question is where on the machine to I have to swap over the electrical links from star to delta, i've tried to access all elec boxes i can find but i can't seem to find this electrical connection?

Also do i need to do the same with the x axis motor?

Any advice appreciated.
Thanks
Jamie

[machintek]

In theory, unless you have a NFPA cabinet, the X power feed is plugged into the wall outlet (115 VAC).
The spindle motor voltage is done by the configuration of 9 wires in the small electrical connection box on the side of the spindle motor.

George

[JQ_Quint]

George

ah ok..

Is this the box you are referring to?

All the wires are numbered and are as follows:

Wires 1,2&3 come from motor and connect to other wires which go to switch box.

All the other wires are grouped 7&4, 8&5, and 6&9.

Can you advise on which cables I need to re-connect?

Also the second pic is where the x axis motor cable enters the main elec box, it comes via the control box on the front of the machine. Will I need to alter anything of these wires?

Many Thanks
Jamie

[HimyKabibble]

This should give you what you need:

http://www.patchn.com/index.php?opti...d=44&Itemid=34

Regards,
Ray L.

[JQ_Quint]

Ray,

Thanks but i'm still not sure what I really need to do?
Apologise if I sound a bit dumb, but electrical jargon not really my thing.

Would you mind spelling it out exactly what I need to do....

Thanks
J.

[HimyKabibble]

Originally Posted by JQ_Quint Ray, Thanks but i'm still not sure what I really need to do? Apologise if I sound a bit dumb, but electrical jargon not really my thing. Would you mind spelling it out exactly what I need to do.... Thanks J.

I can't give you too much detail, since I don't know exactly what you've got there. But, you have 9 wires coming from the motor. It appears to be wired for high speed, but whether star or delta I can't tell. You'll have to use an ohmmeter to test the windings and see which one it is. But, I wonder if you're asking the wrong question? What makes you think you need to switch from Y to delta? If all you're doing is hooking up a phase converter, and the motor is already configured for the correct voltage, all you should need to do
is connect the inverter to those three wires that leave the junction box in your first photo.
I would *strongly* urge you to find someone local who understands this stuff, and can take a good look at what you've got, and what you're trying to accomplish, and tell you how to do it right. Making a mistake here can be expensive if you're lucky and hazardous to your health if you're not.

Regards,
Ray L.