Motorola V186 - Cell Phone - GSM System Planner Manual page 42

I/O Connection Diagrams:
There are two types of current sensors/transmitters, namely 2-wire and 4-wire. The 2-
wire transmitters require a serial power feed for the current loop, whereas 4-wire
transmitters have a separate power supply connection. As a result, with 4-wire
transmitters a single power supply may be used to provide power to several sensors; the
diagram below describes the connection of the two types of current sensors to the analog
input module.
+
-
2 Wire
Current
Sensor
The diagram below describes the connection of 2-wire and 4-wire current sensors using
the 24V PS plug-in on the Analog Input module. Note: 24V Plug-in is a future option.
4 Wire
Current
Sensor
2 Wire
Current
Sensor
+
+
4 Wire
Current
Sensor
-
-
+
-
Shielded Wire
+
+
-
-
Shielded Wire
+
-
AI Module
Shield
AI+ (input x)
AI - (input x)
AI Module
Shield
AI+ (input x)
AI - (input x)
AI Module
+24V (Plug-in PS)
AI+ (input x)
AI - (input x)
COM (common)
AI Module
AI+ (input x)
+24V (Plug-in PS)
AI- (input x)
COM (common)
38
Analog Input Modules