A: Yes. Set Ctr to PID, then in the hidden output menu, set oAct = 2 (reverse action for heating; 1 for cooling). Consult the full PDF manual for cooling configuration.
The controller is operated via a simple four-key interface, allowing for rapid parameter adjustment. xta-7000 temperature controller manual
But PID requires values: P, I, and D. The numbers were currently set to defaults that didn't match the heavy thermal mass of the extruder. A: Yes
