ATV61/71 drive is not switching the analog references from AI1 to AI2?
Why is the ATV61/71 drive not switching the analog references from AI1 to AI2?
Altivar ATV61 and ATV71
The HOA switch is not changing the analog input from AI1 to Ai2.
Go to 1.7 Application menu, Reference switch, and Reference 1 B switching to see what logic input is assigned to do the reference switch. If your HOA (hand off auto) is wired into LI3 and if LI3 is low the drive will look at Ref 1 channel under 1.6 Command menu. If LI3 goes high the drive will look at Ref 1 B channel. This can be confirmed under 1.2 Monitoring menu, I/O map, and then logic input map.