X20 system modules • Temperature modules • X20AT4222
2404
X20 system User's Manual 3.10
4.31.4.7 Input circuit diagram
2-wire connections
Channel 1
Channel 2 - 4
Channel 1
Channel 2 - 4
M
ul
tip
le
xe
r
A/D
converter
250 µA
x
Sense - x
Switch closed for 2-wire
connections
Input value
I/O status
LED (green)
3-wire connections
Sensor - x
PTC
Channel 1
Channel 2 - 4
Channel 1
Channel 2 - 4
M
ul
tip
le
xe
r
A/D
converter
250 µA
x
Sense - x
250 µA
Input value
I/O status
LED (green)
Summary of Contents for X20 System
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