User manual

6 DetaileddescriptionsofI/Omodules| Digital input module UR20-4DI-N
150 1432790000/08/12.2015Manual u-remote
4DI-N
Module status LED
Green: Communication over the system bus
Red: Collective error diagnostic
1.1 Yellow: Input0 active
2.1 Yellow: Input1 active
3.1 Yellow: Input2 active
4.1 Yellow: Input3 active
LEDindicatorsUR20-4DI-N,errormessagesseeChapter13
DI 0
•
•
DI 3
1
2
3
4
1
2
3
4
1
2
3
4
DI 1
GND
24VDC
FE
DI 0
GND
24VDC
FE
DI 2
GND
24VDC
FE
DI 3
GND
24VDC
FE
Type 3
System
bus
U
SYS
U
IN
U
OUT
µC
24VDC IN
GND IN
FE
1
2
3
4
UR20-4DI-N
BlockdiagramUR20-4DI-N