TECHNOTES
Wiring Diagram for NPN and PNP 3 wire sensors with the D2-16ND3-2
Product group:
Information Type:
Last revised :
205 series
16 point DC input module
15 Feb, 2002
Document Name: NPN_PNP 3wire sensors.vsd
3 Wire sensor Layout
24
VDC
IN
A
B
NPN type sensor
Part # AM1-AN-1A
0
1
2
3
4
5
6
7
D2-16ND3-2
20-28VDC
8mA
CLASS2
External 24V
DC power
supply
+
Brown to Module Common
0
Black to module Input
_
1
2
Brown
3
Blue
Blue to Module Common
NC
0
1
2
3
CA
4
5
6
7
CB
4
5
6
7
NPN
PNP type sensor
Part # AM1-AP-1A
_
External 24V
DC power
supply
+
Blue
Black
Brown
Blue
Black to Module Input
Note: If the inductive Proximity sensor is wired incorrectly:
The sensor LED will stay ON and go OFF when activated.
(Normally Open sensor will work Normally Open)
Please refer to our tech support website for more info on sensors. The FAQ section
FAQ
may have information that can help. Click on this link
Question : What output do I need? NPN or PNP?
Answer: This is determined by the device you are connecting the sensor to. Most
ADC PLC modules (except 305 series) allow NPN or PNP sensors to be connected.
Note:
Sinking = provides a path to supply common (–)
Sourcing = provides a path to supply source (+)