abb freq drives

[bdonus01]

Is there a way to wire 1 drive to a supply fan and 1 drive to a return fan, each with a duct smoke detector, so that when either duct detector sences smoke both supply and return turn off.

 

[chris kennedy]

Is there a way to wire 1 drive to a supply fan and 1 drive to a return fan, each with a duct smoke detector, so that when either duct detector sences smoke both supply and return turn off.

Sure, use one control circuit through the NC contacts in the smokes to open a supply relay in both MCC's.

 

[nakulak]

or similarly trips shunt trip breaker to each