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Operation
Model
Light-ON
E3S-AT21
E3S-AT71
Dark-ON
E3S-AD21
E3S-AD71
E3S-AD22
E3S-AD72
E3S-AD23
E3S-AD73
Light-ON
E3S-AR21
E3S-AR71
Dark-ON
Structure of Sensor I/O Connector
Terminal No.
1
2
2
1
3
3
4
4
Downloaded from
Elcodis.com
electronic components distributor
Timing charts
mode
Incident light
No incident light
T
ON
Light indicator
(red)
OFF
ON
Output
transistor
OFF
Operate
Load
(e.g., relay)
Reset
(Between brown and black)
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
Light indicator
(red)
OFF
T
ON
Output
transistor
OFF
Operate
Load
(e.g., relay)
Reset
(Between brown and black)
T: OFF-delay timer (0 to 100 ms)
External
ON
diagnostic
OFF
input
(Between blue and pink)
ON
---
Emitter LED
OFF
ON
Indicator
(red)
OFF
Incident light
No incident light
T
ON
Light indicator
(red)
OFF
ON
Output
transistor
OFF
Operate
Load
(e.g., relay)
Reset
(Between brown and black)
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
Light indicator
(red)
OFF
T
ON
Output
transistor
OFF
Operate
Load
(e.g., relay)
Reset
(Between brown and black)
T: OFF-delay timer (0 to 100 ms)
XS2F-D421-DC0-A
http://www.ia.omron.com/
Mode
selector
switch
Through-beam Receivers, Diffuse-reflective Sensors
L Side
Light
Stability
(LIGHT ON)
indica-
indicator
tor
(green)
(red)
D Side
(DARK ON)
Through-beam Emitters
---
Retro-reflective Sensors
L Side
Light
Stability
(LIGHT ON)
indica-
indicator
tor
(green)
(red)
D Side
(DARK ON)
Classification
Wire color
Brown
Brown
For DC
Blue
Blue
Black
Black
Note: Pin No. 2 is not used.
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Output circuit
Brown
Load
(relay)
100 mA max.
Photo-
electric
Black
Sensor
(Control
main
Z
output)
D
50 mA max.
circuit
Orange
Z
D
Blue
Power indicator
Brown
10 to 30 VDC
(red)
Photo-
electric
Pink
Sensor
(External
main
diagnostic input)
circuit
Blue
Brown
Load
(relay)
100 mA max.
Photo-
Black
electric
Sensor
(Control
main
Z
D
output)
circuit
50 mA max.
Orange
Z
D
Pink
12 K
Blue
Connection Pin No.
1
---
2
3
4
E3S-A
Load
(relay)
10 to
30 VDC
(Self-diagnostic
output)
0 V
Load
(relay)
10 to
30 VDC
(Self-diagnostic
output)
(External
diagnostic input)
Application
+V
---
0 V
Output
7
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