Ok...got the Larios Horizontal mill all painted and now its time to do the electrical..and am running into a snag...
The mill has 2 motors..a 2 speed/6 wire motor for the spindle and a stock 3 wire for the table feeds
Of course..all are 240 volt, 3ph
Ive got a bunch of drum switches and various relays and as I was sitting down to do a wiring diagram..I realized...that the spindle motor was going to need a form C relay or switch. Dont have one. Shit..well..I have one..but its a 100 amp..and is about the size of a poodle. Well..sniff..I cant stick that in a cabinet, now can I?
I think..think..the spindle is 2hp, the knee motor is probably 1/2hp
The issues.....I need to bring in 3 wires AND reverse two of them for the knee...standard reversing switch/contactor should work for that. It would be nice if I could shut power to the knee off totally..but cant with a standard reversing contactor..damnit. I can with a drum switch.
Poop.
The biggie is the spindle motor. Anyone got a form "C" ..normally open/normaly closed, 3 ph, 2-3 hp, contactor kicking around collecting dust?
Id like to avoid using 3 drum switchs plus a switch for the coolant. There is not a lot of places I can hang em.
Spindle motor has high and low..and I need to be able to reverse 2 of the input leads for forward and reverse. So Im going to need (1) reversing switch and a form 'C' switch (High/Low) just to run the spindle. Im sure Ive got reversing contactors....but so far I cant find a 3 phase C contactor in my gear. Lots of single phase...sigh.
I can stick a cabinet on the side of the mill and remote a set of low voltage switches to a small can on the knee or on top of the arbor support
Anyone got one, or a CHEAP source? Probably 12 amps..maybe 9....2.2-3kw
Thanks
Gunner
"I am for doing good to the poor, but I differ in opinion of the means. I think the best way of doing good to the poor, is not making them easy in poverty, but leading or driving them out of it. In my youth I travelled much, and I observed in different countries, that the more public provisions were made for the poor the less they provided for themselves, and of course became poorer. And, on the contrary, the less was done for them, the more they did for themselves, and became richer." -- Benjamin Franklin, /The Encouragement of Idleness/, 1766