User manual

Detailed descriptions of I/O modules | Analogue input module UR20-4AI-UI-12
180 1432790000/03/02.2014Manual u-remote
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
0 V
24 V DC
FE
AI_0
0 V
24 V DC
FE
AI_2
0 V
24 V DC
FE
AI_3
0 V
24 V DC
FE
System
bus
U
SYS
U
IN
U
OUT
UR20 4AI-UI
µC µC MUX
1
2
3
4
24 V DC⎽IN
0 V⎽IN
FE
1
2
3
4
1
2
3
4
1
2
3
4
A
D
BlockdiagramUR20-4AI-UI-12