Omron CP1E-ED

8-7
8 Using Expansion Units and Expansion I/O Units
CP1E CPU Unit Hardware User’s Manual(W479)
8-1 Analog Input Units
8
8-1-4 Flow of Operation
2 Wire to analog output devices.
(1) Wiring internal circuits of the CPU Unit
(2) Wiring analog output devices to the Analog Input Unit
Precautions for Correct UsePrecautions for Correct Use
• Connect the shield to the FG terminal to prevent noise.
• When an input is not being used, short the + and - terminals.
• Separate wiring from power lines (AC power supply lines, high-voltage lines, etc.)
• When there is noise in the power supply line, install a noise filter on the input section and the
power supply.
AG
Analog input 4
Analog ground
COM1(−)
I IN1
V IN1
COM4(−)
I IN4
V IN4
510 kΩ
510 kΩ
510 kΩ
510 kΩ
250 Ω
250 Ω
Internal circuits
Analog input 1
to
to
V IN
COM
I IN
V IN
COM
I IN
Analog
device with
voltage
output
Analog
Input
Unit
+
−
+
−
Analog
device with
current
output
Analog
Input
Unit
2-core shielded
twisted-pair cable
2-core shielded
twisted-pair cable
FG
FG