Looking for a two-for-one deal? The recently introduced ACH 400 variable-frequency drive (vfd) from ABB Automation Inc., New Berlin, WI, could drive you to savings.
Built into the drive are 10 I/O points, all of which can be monitored and controlled via the serial link. “The drive emulates a ddc system unitary controller,” noted Mike Olson, commercial applications engineer, ABB Automation, Drives & Power Products Group. “It’s a drive and a unitary controller in one box.”