Omron CJ1W-AD041-V1 - 3-4-2 Internal Circuitry

96
Wiring Section 3-4
3-4-2 Internal Circuitry
The following diagrams show the internal circuitry of the analog input section.
Input Circuitry
Internal Configuration
1 MΩ
15 kΩ 15 kΩ
15 kΩ 15 kΩ
AG (common to all inputs)
Input (+)
Input (–)
AG
(analog
0 V)
Input circuit
and
conversion
circuit
1 MΩ
Voltage/
current
input switch
250 Ω
Bus
interface
Indicators/Switch
MPU
Regulator
Insulation-type
DC-to-DC
converter
Oscillator
Division
CJ-series PC
EEPROM
RAM ROM
Multi-
plexer
and
amplifier
A/D
converter
INPUT
Externally
connected
terminal
Photocoupler insulation
+5 V