23 January 2021
Set up plus and minus speeds on the Altivar 31/312 drives.
ATV31 and ATV312
All serial numbers for ATV31 and ATV312
If using a momentary push button to increase/decrease speed
Set up the drive as follows:
Wire one side of the switch to the +24v terminal and the other side of the minus switch to a logic input (example LI5)
Wire one side of the switch to the +24v terminal and the other side of the plus switch to a logic input (example LI6)
Then program the drive as follows:
LAC set to 2 or 3
RFC Ref 2 switching set to Ch2 active
FR2 Ref 2 channel set to UPdt + and - speed control.
UPd + /- speeds
USP= + speed input for LI5 or you can choose your logic input assignment.
dSP= - speed input for LI6 or you can choose your logic input assignment.
Note: Conflicting functions need to be de-activated. Set PS2 = PS4 = JOG = SA2 = nO