We are a machine builder. Old customer requests programmed drives to replace failed Altivar 61 drives. Latest model is Altivar 630. Past engineers did not fully document all the parameter changes. I have read through all of the Schneider literature I could find, but have not found explanation of how the parameters all work together.
Somewhat of a simple application, with the two VFDs running an AC fan motor. Not networked. (2) logic inputs, (2) analog inputs.
I believe LI1 ON will put into RUN mode, loss of LI1 puts into STOP mode. RUN mode uses analog AI1 value for scaling speed command.
The tricky part...analog AI2 is to overcome speed command of AI1 depending on voltage level. The command switching I have not figured out.