Installation
IO Slave
(2) 1-5 Volt Sensor (cont.)
•
Sensor Output Wire is connected to Analog Input 1 screw terminal # 8 or Analog In-
put 2 screw terminal # 10 on the terminal block of the IO Slave.
(3) 4-20 Milliamp Sensor (Figures 21-22)
•
Consists of a 2 wire connection from the Sensor to the IO Slave.
•
An external resistor (typically 249 Ohms) is required to convert 4-20 milliamps to 1-
5 volts. The resistor goes from the desired Analog Input to Ground screw terminals
on the terminal block of the IO Slave.
•
Sensor Power Supply (High) Wire is connected to VSNS screw terminal #7 on the
terminal block of the IO Slave.
•
Sensor Output (Low) Wire is connected to the same Analog Input as the resistor on
the terminal block of the IO Slave.
Example of one 4-20 milliamp sensors connecting to the terminal block of the IO Slave:
(Figures 21-22)
FGRIO-S Wiring diagram
Figure 21
Low Wire
Resistor for
Sensor # 1
•
12-Ground
•
11-B+ IN
•
10-Analog Input 2
•
9-Ground
•
8-Analog Input 1
•
7-VSNS
•
6-Ground
•
5-Digital Output 2
•
4-Digital Output 1
•
3-Ground
•
2-Digital Input 2
OR
Analog Input 4*
•
1-Digital Input 1
OR
Analog Input 3*
Sensor #1
Sensor #2
High W
ire
Low Wire
High W
ire
Resistor for
Sensor # 2
RSPSupply - 1-888-532-2706 - www.RSPSupply.com
http://www.RSPSupply.com/p-20028-FreeWave-FGR2-IO-IOE-Radio-Enclosed-900-MHz-I/O-Slave-Radio.aspx