Fuji Electric PXF9APP2-MBVA1, 1/4 DIN (96 x 96mm) temperature and process controller, self-tuning, 50ms sampling speed, current production.
The PXF9APP2-MBVA1: The 50ms sampling rate means the PID loop updates every cycle at line frequency; for a 50 Hz mains, that's 2.5 samples per half-cycle, giving the autotune algorithm enough resolution to converge on gain values without overshoot hunting.
The 50ms sampling rate updates the PID loop every 50 milliseconds, which is fast enough to track thermal changes in high-speed packaging, injection molding, or furnace zones where a standard 250ms controller would lag behind the process dynamics.