For machine control you are usually controlling latching contactors and want SPDT momentary switches. Looks like you've already got some in that panel. How are you going to use the switches?
John, yeah, there are some there, but they're pretty beat up. I'm thinking about replacing the works and be done with it.
For the motor starter you will want momentary, Start, Normally Open (NO), for the Stop, Normally Closed (NC)
For the Estop, Maintained, Twist release, NC
For the lamp and coolant pump, Maintained Selector, NO
Try this
https://www.automationdirect.com/adc/Shopping/Catalog/Pushbuttons_-z-_Switches_-z-_Indicators
Nice. Thanks Jim! So what I need:
I'm going to need that "master" power circuit to activate the controls. I figure something with an amber light, or at least an amber indicator?
I'm going to need a green button, and a red button.
I'm going to need blue for coolant.
Lamp can be plain/white.
The E-Stop button will need to be linked to that Stearns Brake, so I assume the way that will work is pulled out, the circuit will be closed, permitting the brake to be disengaged, and when I push it in, it will open, and the brake gets applied. Or maybe I'm making it too simple. Will I need to put a relay in place? The next question along those lines... One of the things I read that is a recommendation for lathes over a certain bed length is to have TWO E-stop switches... One at the Headstock somewhere in easy reach, and one mounted in easy reach on the carriage. So follow my ignorance a step further. Is the way to do this approximately like: The two E-Stop switches are in series, and if either is pushed-in (Open) then that breaks the circuit that energizes the relay that when energized, sends power to the brake, which then disengages? Roughly?
I've been looking at coolant systems just because. What I've decided is that I ought to provision for a 3 phase coolant pump, probably in the 1/8-1/4HP range, that would be electrically integrated to the machine, via an accessory socket like the one the machine already has... Anything less than that, I can do as an adjunct free-standing circuit separate from the machine anyway... Sound reasonable?
So the idea, I think, would be like this:
Turn on "master" (Control circuit) power which would be my separate 120v circuit. This should then do the following:
Turn on an indicator
Enable the E-Stop Circuit (Provide power to a relay for the the brake to disengage it) and I assume stops the main motor.
Enable the Starter Circuit (Provide power to the starter button)
Enable the Pump Circuit(Provide power to the Pump Switch)
Enable the Lamp Circuit(Provide power to the lamp switch)
At that point, hitting the E-Stop switch should de-energize the relay, and the brake should apply.
Pressing the Starter button should power up the main motor
Turning on the Pump Circuit should power a relay to power the accessory plug(3-phase)
Turning on the Lamp circuit should just turn on a 120v lamp socket.
Once the motor is running, does the stop switch break the main motor circuit, or how does that work exactly?
Sorry, I'm just trying to work all this out in my head, and there's plenty of bone to penetrate...