
Single Gas Sensor Module (SGSM)
Operations Manual
Super Systems Inc.
Page 5 of 38
Page 5 of 51
Connections Diagram
The following diagrams show the connections for the two versions of the SGSM.
A20829
Figure 1 - Connections diagram for A20829
.
Wire Color
Red
+VDC
Power supply (24VDC @ 750 mA)**
Black
-VDC
Green/Black Stripe
+RS485
Communications signal
Red/Black Stripe
-RS485
provided by modbus over serial
White/Black Stripe
+O2
O2 input for lambda probe
Orange/Black Stripe
-O2
when used as H2/O2 sensor
Orange
+ mA
Analog output #1
Blue
- mA
(4-20 mA)
Green
+ mA
Analog Output #2
White
- mA
(4-20 mA)
Function