Circuit Components for a control unit
Hi,
I am designing a control system to power and control a 3phase motor/pump. the hydraulic part is ok but the electrical part I am trying to figure out what circuit componets I reuqire to make it a safe system. (a professional comapny will bild this for me but i wld like to understand the system myself to control the cost)
I assume I need the following:
1. circuit Breaker (RCD)
2. Contactor
3. Relay stack
I wonder how the level switch and pressure switches should be wired in the system. I am trying to look for eqipment in RS and Farnell...
Any block diagrams / pointers would be fantastic.
Regs