User manual

6 Detailed descriptions of I/O modules | Analogue input module UR20-4AI-UI-12
265Manual u-remote1432790000/08/12.2015
4AI-UI-12
Status LED module
Green: Communication over the system bus
Red: No communication on system bus or
diagnostic message displayed
1.1 Red: channel error input 0
2.1 Red: channel error input 1
3.1 Red: channel error input 2
4.1 Red: channel error input 3
LEDindicatorsUR20-4AI-UI-12,errormessagesseeChapter13
AI 0
•
•
AI 3
AI 1
GND
24VDC
FE
AI 0
GND
24VDC
FE
AI 2
GND
24VDC
FE
AI 3
GND
24VDC
FE
System
bus
U
SYS
U
IN
U
OUT
UR20 4AI-UI
µC µC MUX
1
2
3
4
24VDC IN
GND IN
FE
1
2
3
4
1
2
3
4
1
2
3
4
A
D
Block diagram UR20-4AI-UI-12