So far everything has gone pretty smooth on my 602. I cleaned the machine up a little bit and removed some surface rust here and there. Overall, the machine is in pretty good shape for it's age. I did verify the machine worked prior to purchasing it.
In my shop, I will be using a VFD. I should mention I have never wired a VFD to a milling machine. All of my experience lies with lathes. My intention was to just bypass the forward/reverse switch and grab the three main leads from the motor and bam, I'm in business. The problem came when I pulled the motor cover off and saw six wires, which I haven't seen before on any three phase motors I've done in the past. This makes me wonder if my motor is a two speed, or if those three additional wires might possibly run to the power feed (whose motor has long since been removed) but that doesn't make much sense since they are being pig-tailed into the forward/reverse switch with the main motor. I can't seem to locate a manual to identify which wire is which, but they are numbered.
Now, it's important to disclose that each of these two wires are pig-tailed into the three load wires to the main power, so whatever they are, they are both getting standard 3-phase power. I'm sure it's probably something simple, so I'd love it if anyone had some suggestions for me.
My last question is regarding the vari-speed drive. I've never dealt with one of these pulley speed controllers before. It would seem the best solution would be to use a 1:1 drive pulley on the spindle, but I'm still rebuilding my lathe. In the meantime, is it acceptable to just run the main motor flat out (I assure this would be as it was designed) and utilize the vari-speed drive for the time being?
See attached photo for reference.
The wires are bundled in the follow order:
1/7
2/8
3/9
The three black conductors all go to the forward/reverse switch as you would expect.
There are three wires all pigtailed together:
4/5/6
Any help is greatly appreciated!
In my shop, I will be using a VFD. I should mention I have never wired a VFD to a milling machine. All of my experience lies with lathes. My intention was to just bypass the forward/reverse switch and grab the three main leads from the motor and bam, I'm in business. The problem came when I pulled the motor cover off and saw six wires, which I haven't seen before on any three phase motors I've done in the past. This makes me wonder if my motor is a two speed, or if those three additional wires might possibly run to the power feed (whose motor has long since been removed) but that doesn't make much sense since they are being pig-tailed into the forward/reverse switch with the main motor. I can't seem to locate a manual to identify which wire is which, but they are numbered.
Now, it's important to disclose that each of these two wires are pig-tailed into the three load wires to the main power, so whatever they are, they are both getting standard 3-phase power. I'm sure it's probably something simple, so I'd love it if anyone had some suggestions for me.
My last question is regarding the vari-speed drive. I've never dealt with one of these pulley speed controllers before. It would seem the best solution would be to use a 1:1 drive pulley on the spindle, but I'm still rebuilding my lathe. In the meantime, is it acceptable to just run the main motor flat out (I assure this would be as it was designed) and utilize the vari-speed drive for the time being?
See attached photo for reference.
The wires are bundled in the follow order:
1/7
2/8
3/9
The three black conductors all go to the forward/reverse switch as you would expect.
There are three wires all pigtailed together:
4/5/6
Any help is greatly appreciated!