7EN02-0390-03

Digital input applications

Digital inputs are typically used for monitoring the status of switches or contacts, such as status contacts on circuit breakers.

They can also be used for pulse counting or input metering applications, such as WAGES (water, air, gas, electricity, steam) monitoring, or conditional energy applications, or IRIG-B time synchronization.

Related topics: IRIG-B timesync, conditional energy,

! Example only to show how we can start reusing sections from existing topics in Motif, for example graphics from ION Reference.

Pulse mode

If you set Input Mode to PULSE, a pulse is generated at the Trigger output when the State output changes from OFF-to-ON. No pulse is generated when State changes from ON-to-OFF.

KYZ mode

If you set Input Mode to KYZ, a pulse is generated at the Trigger output for each change of state transition, i.e. from OFF-to-ON and from ON-to-OFF transitions.

A/C mode

If you set Input Mode to A/C, the digital input port is configured to detect the presence of a low voltage AC signal. The next illustration shows how a digital input can be used to monitor the operation of a low voltage AC fan controller.

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