AB Quality Allen-Bradley 2755-SN3 User Manual page 58

Installing the Wiring Base and Power Supply
The following is a typical package detector configuration:
Reflector
Connect the package detect wiring to the wiring base as shown.
Note: If you are using a sensor with mechanical contacts, refer to
page 3–21 for wiring connections to an input module.
Package
Detector
3–23
Package
Detector
PKG DET
+12VDC
Ground
Trigger
Shield