3- and 4-Wire DC PDF fileInductive 5 Cylindrical 3-Wire and 4-Wire DC Inductive Proximity Sensors 3-Wire and 4-Wire DC 91 4 mm Sensing Range Drawing No. 17 4 mm Sensing Range Drawing No. 18 NBB4-12GM30-E2-V1 [PNP N.O.] NBB4-12GM30-E3-V1 [PNP N.C.] M12 x 1 0 DC power 4 1 supply 5 2 6 3 7 0 - AutomationDirect PDF file4 3 2 1 6 7 5 NC 0 3 2 7 CB 6 D2-16ND3-2 1 20-28VDC CLASS2 1 0 8mA CA 4 B 3 2 IN A 0 5 7 6 24 VDC 4 Module Common Brown Black to Input Blue NPN type sensor Part #SS2-ON-4A 4 Wire sensor Layout NPN _ External 24V + DC power supply _ + External 24V DC power supply Common Module Common Blue Brown Black Black to Module Input Wiring Diagram for NPN How to Wire Discrete DC Sensors to PLC - Part 2 - YouTube Click to view on Bing17:33How to Wire Discrete DC Sensors to PLC - Part 1: In this video, you will learn how to wire a 3-wire DC sensor, like an inductive proximity sensor, to a PLC input card.Author: RealParsViews: 115K 4 Wire Oxygen Sensor Wiring Diagram | Free Wiring Diagram Variety of 4 wire oxygen sensor wiring diagram. A wiring diagram is a streamlined standard pictorial depiction of an electrical circuit. It reveals the components of the circuit as streamlined forms, and also the power as well as signal links between the tools. 4-Wire PNP Proximity Sensors | Engineering360 12 mm Diameter DC 3/4 Wire Inductive Proximity Sensor -- S3040 from Fargo Controls, Inc. Features: Short circuit & reverse polarity protection. Protection degree IP67: dust tight and protection from the effects of immersion.