Perle Systems Perle IOLAN DS1 - Manual (Page 204)

Wiring I/O Diagrams
204 IOLAN DS1/TS2 User’s Guide, Version 3.4
RTD 2-Wire
In a 2-wire RTD configuration, connect the excite wire to A1-, the return wire to A1+, and jumper the
sense wire from A1s with a insulated wire going to A1+.
RTD 3-Wire
In a 3-wire RTD configuration, connect the return wire to A1+, the excite wire to A1-, and the sense
wire to A1s.
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.
Relay Output
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.
A1
+
A1
-
A1
s
A2
s
A2
+
A2
-
A3
+
A3
-
A3
s
A4
s
A4
+
A4
-
return excite
sense
A1
+
A1
-
A1
s
A2
s
A2
+
A2
-
A3+ A3- A3s A4s A4+ A4-
return ex
cite
se
n
se
A1
+
A1
-
A1
s
A2
s
A2
+
A2
-
A3+ A3- A3s A4s A4+ A4-
return excite sense
COM NC NO NO COM NC
R1 R2