A while back I purchased a used 3 Phase Bridgeport style Mill. The control Panel it came with was pretty poor, but worked for my uses so I didn't give it a second thought until recently I started having some issues.
The current set up I have is 3 phase power comes into the box to an old Allen-Bradley Relay that is triggered by a 120V AC switch. The other legs go directly to the mill motor. The Relay is triggered by a normal wall switch mounted to the panel that has a normal Edison plug that goes into an AC outlet to give that side of the relay/switch power. When I flip the switch up the relay activates giving power to the mill, when the switch is off the relay cuts the power to the mill. Of course this is not ideal because I don't have a reverse, there is no inline fuse in the panel, or E stop to cut the power if the relay sticks. Did i mention relay sticking? That is the issue i'm having now, and I have to cut the power at the phase converted (not in the control panel but mounted to the wall of my basement to turn the mill off. Needless to stay due to dangers with the machine not being able to safely stop at the work station I stopped using it.
I would like to purchase/build a new control panel that, doesn't need to be plunged into the wall of a separate outlet, but can operate off of the incoming 3 phase power on its on, E-stop switch, 15 amp time delay fuses on each leg, forward and reverse relays, and on/off buttons, and this might be getting greedy, but perhaps a current meter to see what my motor is drawing?
Anyway i have done some searching without much luck finding an off the shelf unit, or finding a guide to building one. Can anyone point me in the right direction of how to proceed? I have some wiring experience and don't think I'll have an issue putting a system together, it is more of a matter of finding a guide for sourcing the right components and where to purchase them from.
Any advice would be greatly appreciated.