Perle Systems Perle IOLAN DS1 - Manual (Page 203)

I/O Wiring Diagrams 203
Wiring I/O Diagrams
Analog Input
Make sure the Analog jumpers support the software setting; see Analog Input Module on page 199
for jumper settings.
Current
To connect channel A1 with a 2-wire shielded cable, connect the positive wire to A1+, the negative
wire to A1-, and optionally the shield to GND.
If you have the positive/negative wires reversed, the output will always read 0 (zero).
Voltage
To connect to Channel A1 with a 2-wire shielded cable, connect the positive wire to A1+, the
negative wire to A1-, and optionally the shield to GND.
If you have the positive/negative wires reversed, the polarity of the voltage will be reversed.
Temperature Input
If you are using RTD sensors, a short detected status will be displayed if the wires are connected
improperly. RTD or thermocouple sensors will display an open detection status when the circuit is
broken.
Thermocouple
To connect to Channel A1 with a 2-wire cable, connect the positive wire to A1+ and the negative
wire to A1-; you will not be using the A1s connection.
A3
+
A3
-
A4
+
A4
-
GN
D
A1
+
A1
-
A2
+
A2
-
+ -
shield
A3+ A3- A4+ A4- GND A1
+
A1
-
A2
+
A2
-
+ -
shield
A1
+
A1
-
A1
s
A2
s
A2
+
A2
-
A3+ A3- A3s A4s A4+ A4-
+ -