What the 50ms sampling means for the loop
The PXF5AER2-MVVA1: A 50ms sampling period means the controller updates its PID output every 50 milliseconds. For thermal processes like extruder zones or oven chambers, that is fast enough to catch temperature excursions before they overshoot the setpoint by more than a degree. It is not a high-speed process controller — you would not use it for pressure or flow loops that need sub-millisecond response — but for temperature, it keeps the process variable tight.
The 1/8 DIN form factor (48 x 96mm) is a standard cutout for temperature controllers. It mounts in a panel with a simple spring-clip or bracket, and the shallow depth leaves room behind the door for wiring. The self-tuning algorithm means you can let the controller auto-tune the PID gains on startup rather than entering values manually — saves commissioning time on multi-zone lines.