What does the 50 ms sampling speed mean for your loop?
The PXF9APC2-JVMA1 samples the process variable every 50 ms — that's a 20 Hz update rate, fast enough to catch thermal transients in injection molding barrels or reflow ovens before the PID correction lags behind the setpoint.
Panel fit — 1/4 DIN footprint
The 96 x 96 mm 1/4 DIN cutout is the standard panel-mount size for process controllers — same footprint as legacy Fuji PXF series and most Omron/TC controllers, so retrofitting into an existing panel hole requires no rework.