Control wiring diagrams
Each guide walks the circuit terminal by terminal — the schematic highlights the conductor you are landing, with the meter checks to make before moving on. Everything works offline.
3-wire start/stop with seal-in
The base of every magnetic starter control circuit: momentary stop in series, momentary start in parallel with the starter's own auxiliary contact.
Dual-location start/stop (two control stations)
Two operator stations that can each start and stop the machine: stops always in series, starts always in parallel.
Hand-Off-Auto with pressure switch (dual control)
Selector-switch circuit that runs the compressor manually in HAND and lets the pressure switch or controller run it in AUTO.
VFD hand/auto: run permissive, remote start, speed reference
Terminal-by-terminal wiring for a drive that runs from a keypad in HAND and from a controller's dry contact plus 4–20 mA reference in AUTO, with fault and run feedback returned to the controller.