0-10V Signal binary and sequence of volt free changeover relays

The IO/DOM4 digital output module is microprocessor based and designed to provide sequence or binary control of 4 volt free relays from a 0-10 Volt control signal.

In sequence mode the module incorporates an optional time delay selection to prevent short cycling and for soft start on switch after power failure. There is also an input to reverse the control output sequence.

In binary mode the module provides a combination of 16 switching variations dependent on the value of the control voltage signal.