Page 19
Installation
optoNCDT ILR 1181 / 1182
white
brown
violet
3 kOhm 2.2 nF
TxD
RxD
GND
Fig. 7 Recommended termination wiring for work with open RS232
5.3.2
ILR 1182-30
Extension and termination according to standard requirements.
For correct screening, three essential rules must be followed:
1 For integration with vehicles: Where the attachment point and the reference potential (GND or “-“) have
equal potentials, it may be necessary to electrically isolate the sensor housing, in order to prevent
ground loops.
2 Use screened cables. Extend also the cable screen.
3 Connect the screen to the ground of the power supply on cable end.
U
v
GND
GND
1
2
3
Fig. 8 Correct screening of ILR 1181/1182
