Perle Systems 5500161-40 Relay Output, RTD 4-Wire, Normally Open Contact, Normally Closed Contact

Wiring I/O Diagrams

RTD 4-Wire

In a 4-wire RTD configuration, connect the return wire to A1+, the excite wire to A1-, the sense wire to A1s, and leave the fourth wire disconnected.

A1+ A1- A1s A2+ A2- A2s

A3+ A3- A3s A4+ A4- A4s

return

Relay Output

excite

sense

Normally Open Contact

To connect Relay channel R1 for a circuit that is normally inactive, connect one wire to the COM (common) connector and one wire to the NO (normally open) connector.

COM NC NO COM NC NO

R1

R2

Normally Closed Contact

To connect relay channel R1 for a circuit that is normally active, connect one wire to the COM (common) connector and one wire to the NC (normally closed) connector.

COM NC NO COM NC NO

R1

R2

I/O Wiring Diagrams 389