Wiring and configuring 2-wire terminal start/stop run control on Logic Input 1 (LI1 + 24vdc) and 0-10vdc speed control via Analog Input 1 (AI1) on Altivar 31 & 312 (ATV31/ATV312) Variable Frequency Drives (VFD). A potentiometer is commonly used as the 0-10vdc analog speed reference.
Altivar 31 and 312
All models in range.
Pot for speed control or 0-10v logic input for speed control.
Wire your external pot to AI1 com and +10vdc. (wiper wire on AI1)
Wire your Start forward command between LI1 and +24vdc.
Step 1: Go into the CTL menu enter
Step 2: Set Fr1 to AI1