Controller fit and field wiring
The Fuji Electric PXF4ABU2-4BYA1 is a 1/16 DIN (48x48mm) temperature and process controller from the PXF Series, socket-mount for panel cutout. It accepts a universal input — thermocouple or DC voltage — with wiring backwards-compatible to the earlier PXR/W/Z series, so a panel swap doesn't require re-running sensor cables. The 50 ms sampling speed catches fast thermal transients in small vessels or inline heaters, which matters when a CIP cycle ramps temperature quickly and you need the controller to respond before overshoot hits the product. Power is 24 V AC/DC (50/60 Hz), and the single control output is a relay SPDT contact — adequate for driving a contactor or solid-state relay on a heating element. Programming follows North American code conventions, so the parameter map is familiar to integrators used to Fuji's PX series logic.