E39-S46 Datasheet, PDF (9/21 Pages) Omron Electronics LLC – Built-in Amplifier Photoelectric Sensor (Medium Size)

E3S-A
Model
E3S-AR41
E3S-AR91
Operation
mode
Light-ON
Dark-ON
Timing charts
Mode
selector
switch
Output circuit
Incident light
No incident light
Light indicator ^ON
T
(red)
OFF
Output
ON
transistor _OFF
Load
Operate
(e.g., relay) _Reset
(Between blue and black)
T: OFF-delay timer (0 to 100 ms)
L Side
(LIGHT ON)
Incident light
No incident light
Light indicator ^ON
(red)
OFF
Output
ON
T
transistor _OFF
Load
Operate
(e.g., relay) _Reset
(Between brown and black)
T: OFF-delay timer (0 to 100 ms)
D Side
(DARK ON)
Retro-reflective Sensors
Light
indica-
tor
Stability
indicator
(green)
4.4 K
(red)
Photo-
electric
Sensor
main
circuit
Brown
ZD
50 mA
max.
ZD
100 mA max.
(External
Pink diagnostic input)
(Self-diagnostic
Orange _output)
(Control
output) Load
Black
(relay)
10 to
30 VDC
Load
(relay)
Blue
Structure of Sensor I/O Connector
2
1
3
4
Terminal No.
1
2
3
4
XS2F-D421-DC0-F
Classification Wire color
Brown
Blue
Black
For DC
Brown
---
Blue
Black
Note: Pin 2 is not used.
Connection Pin No.
1
2
3
4
Application
+V
---
0V
Output
Adjustment Methods
Sensitivity Adjustment for Diffuse-reflective Sensors Set to Light ON
Item
Sensing condition Sensitivity adjuster
Indicators
Procedure
Photoelectric
(A)
1) Position A ^Sensor
Backg-
round
object
Sensing object
Min.
2) Position B
Photoelectric
Sensor
Backg-
round
object
Sensing object
Min.
Locate a sensing object at the sensing
ON → OFF OFF → ON distance, set the sensitivity adjuster to
the minimum scale position, and
gradually increase sensitivity by turning
the sensitivity adjuster clockwise until the
Max.
Stability
indicator
(green)
Light
indicator
(red)
incident light indicator (red LED) is ON.
Position A is where the indicator has
turned ON.
Position B is when the sensing object is
removed and the sensitivity adjuster is
ON → OFF ON → OFF ^{turned clockwise until the incident light}
(C)
indicator (red LED) is ON. Position C is
where the adjuster is turned
(B)
Stability
Light
counterclockwise (reducing the
Max.
indicator
indicator ^{sensitivity) from position B until the}
(green)
(red)
incident light indicator (red LED) is OFF.
When there are no background objects,
the maximum sensitivity is position C.
3) Setting
---
(A)
Min.
(C)
Max.
ON
Stability
indicator
(green)
ON → OFF
Light
indicator
(red)
Set the sensitivity adjuster to halfway
between (A) and (C) (at the optimum
sensitivity). Check that the stability
indicator (green LED) turns ON
according to whether the sensing object
is there or not. There is not sufficient
margin if it does not turn ON. If this is the
case, reconsider the detection method.
Unlike conventional Photoelectric Sensors, the variation in the sensitivity of E3S-A Photoelectric Sensors is minimal. This means
the sensitivity can be adjusted on only a single Photoelectric Sensor, and then the adjusters on the other Photoelectric Sensors
can be set to the same scale position. There is no need to adjust the sensitivity of each Photoelectric Sensor individually.
9