What the 50 ms sampling buys you
The PXF9ABA2-FBCA1: That sampling rate matters when you're controlling an injection molding barrel or a rapid-response electric heater — a standard 200 ms loop misses the overshoot on a fast thermal system, and this part catches it.
Panel fit and sourcing posture
The 1/4 DIN (96 x 96 mm) cutout is the standard panel-mount footprint — same as every other 1/4 DIN controller on the market, so no rework on the gland plate or enclosure layout.