Built-in Amplifier Photoelectric Sensor (Medium Size)
E3S-A
Be sure to read Safety Precautions
on page 10.
Ordering Information
Built-in Amplifier Photoelectric Sensors
Sensing method Appearance Connection
method Sensing distance Functions Model
NPN output PNP output
Through-beam
Sensors
Pre-wired
--- E3S-AT11 E3S-AT31
E3S-AT21 E3S-AT41
Connector
(M12) --- E3S-AT16 E3S-AT36
Pre-wired
--- E3S-AT61 E3S-AT81
E3S-AT71 E3S-AT91
Connector
(M12) --- E3S-AT66 E3S-AT86
Retro-reflective
Sensors
Pre-wired
*1
--- E3S-AR11 E3S-AR31
E3S-AR21 E3S-AR41
Connector
(M12) --- E3S-AR16 E3S-AR36
Pre-wired
--- E3S-AR61 E3S-AR81
E3S-AR71 E3S-AR91
Connector
(M12) --- E3S-AR66 E3S-AR86
Red light Infrared light
Horizontal
7 m
Timer
Self Diagnosis
Turbo
External
Diagnosis
Vertical Timer
Self Diagnosis
Turbo
External
Diagnosis
Horizontal
2 m
(100 mm)
Timer
Self Diagnosis
Turbo
External
Dia
g
nosis
Vertical Timer
Self Diagnosis
Turbo
External
Diagnosis
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E3S-A
*1. Values in brackets are the minimum required distance between the Sensor and Reflector.
*2. The following models are available with 200-mm sensing distances: E3S-AD14 and E3S-AD64.
Accessories (Order Separately)
Insert-type Long Slit
Mutual Interference Prevention Filters
Reflectors/Other Accessories
Note: When using any Reflector other than the provided one, use a sensing distance of approximately 0.7 times the typical value as a guide.
* Values in brackets are the minimum required distance between the Sensor and Reflector.
Diffuse-reflective
Sensors
Pre-wired
--- E3S-AD13 *2E3S-AD33
E3S-AD23 E3S-AD43
--- E3S-AD11 E3S-AD31
E3S-AD21 E3S-AD41
--- E3S-AD12 E3S-AD32
E3S-AD22 E3S-AD42
Connector
(M12) ---
E3S-AD18 E3S-AD38
E3S-AD16 E3S-AD36
E3S-AD17 E3S-AD37
Pre-wired
--- E3S-AD63 *2E3S-AD83
E3S-AD73 E3S-AD93
--- E3S-AD61 E3S-AD81
E3S-AD71 E3S-AD91
--- E3S-AD62 E3S-AD82
E3S-AD72 E3S-AD92
Connector
(M12) ---
E3S-AD68 E3S-AD88
E3S-AD66 E3S-AD86
E3S-AD67 E3S-AD87
Slit width Sensing distance Minimum sensing
object (typical) Model Quantity Remarks
0.5 mm × 11.1 mm 500 mm 0.2-mm dia.
E39-S46
1 of each for Emitter/
Receiver (4 Slits total) Slits can be used with the E3S-
AT@@ Through-beam
Sensor.➜Page 10
1 mm × 11.1 mm 1.1 m 0.4-mm dia.
2 mm × 13.6 mm 2.5 m 0.8-mm dia. 1 of each for Emitter/
Receiver (2 Slits total)
Sensing distance Model Quantity Remarks
2.4 m E39-E6 2 of each for Emitter/Receiver
(4 Filters total)
Can be used with the E3S-AT@@ Through-beam Sensor.
➜ Page 11
Name Sensing distance (typical) Model Quantity Remarks
Reflectors 2 m (100 mm) *
(rated value) E39-R1 1 Provided with E3S-AR@@ Retro-reflective Sensor.
Small Reflectors 1.3 m (100 mm) * E39-R3 1 ---
600 mm (70 mm) *E39-R4 1 ---
Tape Reflectors
450 mm (100 mm) *E39-RS1 1
Enables MSR function.700 mm (100 mm) *E39-RS2 1
900 mm (100 mm) * E39-RS3 1
Optical Axis
Confirmation Reflector --- E39-R5 1Used to check optical axis for the E3S-AT@@
Through-beam Sensor.
Sensing method Appearance Connection
method Sensing distance Functions Model
NPN output PNP output
Horizontal
100 mm (wide view) Timer Self Diagnosis
200 mm Timer
Self Diagnosis
Tu r b o
700 mm Timer
Self Diagnosis
Tu r b o
100 mm (wide view)
200 mm
700 mm
Vertical
100 mm (wide view) Timer Self Diagnosis
200 mm Timer
Self Diagnosis
Tu r b o
700 mm Timer Self Diagnosis
100 mm (wide view)
200 mm
700 mm
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E3S-A
Mounting Brackets/Other
Note: If a Through-beam Model is used, order two Mounting Brackets, one for the Emitter and one for the Receiver.
Sensors I/O Connectors
Sensors I/O Connectors
Appearance Model Quantity Remarks
E39-L69 1 Provided with E3S-A Horizontal Sensors.
E39-L70 1 Provided with E3S-A Vertical Sensors.
E39-L59 1Provided with E3S-A Vertical Pre-wired
Sensors.
E39-L81 1Provided with E3S-A Vertical Connector
Sensors.
E39-L97 1
Protective Cover for Horizontal Sensors
Note: When mounting Sensors with Connectors, the
Sensor I/O Connector will come into contact
with the Bracket. Mount the Sensor with care.
E39-L98 1
Protective Cover for Vertical Sensors
Note: When mounting Sensors with Connectors, the
Sensor I/O Connector will be longer. Mount the
Sensor with care.
E39-L60 1Close Mounting Plate:
Provided with E3S-A Connector Sensors.
Model Quantity Remarks
E39-G2 1 Provided with product.
Cable Appearance Cable type Model
Standard
2 m
3-wire
XS2F-D421-DC0-A
5 m XS2F-D421-GC0-A
2 m XS2F-D422-DC0-A
5 m XS2F-D422-GC0-A
Straight
L-shaped
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E3S-A
Ratings and Specifications
*1. Values in brackets are the minimum required distance between the Sensor and Reflector.
*2. National Electrical Manufacturers Association
Sensing method Through-beam
Sensors
Retro-reflective
Sensors
(with MSR function)
Diffuse-reflective Sensors
Item
Model
E3S-AT11, 16, 21, 31,
36, 41, 61, 66, 71, 81,
86, 91
E3S-AR11, 16, 21, 31,
36, 41, 61, 66, 71, 81,
86, 91
E3S-AD13, 18, 23, 33,
38, 43, 63, 68, 73, 83,
88, 93
E3S-AD11, 16, 21, 31,
36, 41, 61, 66, 71, 81,
86, 91
E3S-AD12, 17, 22, 32,
37, 42, 62, 67, 72, 82,
87, 92
Sensing distance 7 m 2 m (100 mm) *1
(When using E39-R1)
100 mm (wide view)
(white paper 100 ×
100 mm)
10 to 200 mm
(white paper 100 ×
100 mm)
700 mm
(white paper 200 ×
200 mm)
Standard sensing object Opaque:
10-mm dia. min.
Opaque:
75-mm dia. min. ---
Differential travel --- 20% max. of sensing
distance
10% max. of sensing
distance
20% max. of sensing
distance
Directional angle Both Emitter and
Receiver: 3° to 15°3 to 10°---
Light source (wavelength) Red LED (700 nm) Infrared LED (880 nm) Red LED (700 nm) Infrared LED (880 nm)
Power supply voltage 10 to 30 VDC, including ripple (p-p) 10%
Current consumption
Both Emitter and
Receiver: 20 mA max.
(plus approx. 15 mA with
turbo function)
30 mA max. (plus
approx. 15 mA with
turbo function)
35 mA max.
30 mA max. (plus
approx. 15 mA with
turbo function)
35 mA max.
Control output Load power supply voltage: 30 VDC max., Load current: 100 mA max. (residual voltage: 1 V max.)
Open-collector output (NPN or PNP depending on model), Light-ON/Dark-ON selectable
Self-diagnostic output (Only
on Sensors with self-diagnos-
tic outputs)
(Only Sensors with self-diagnostic function) Load power supply voltage: 30 VDC max.,
Load current: 50 mA max. (residual voltage: 1 V max.),
Open-collector output (NPN or PNP depending on model)
External
diagnostic
input
(Only on
Sensors with
external
diagnostic
outputs)
Input
voltage
NPN
with Emitter OFF: 0 V short-circuit or 1.5 V max.
(source current: 1 mA max.)
with Emitter ON: Open
(leakage current: 0.1 mA max.)
PNP
with Emitter OFF: +DC short-circuit or −1.5 VDC
max. (sink current: 3 mA max.)
with Emitter ON: Open
(leakage current: 0.1 mA max.)
---
Response
time 0.5 ms max.
Protection circuits
Power supply reverse
polarity protection,
Output short-circuit
protection
Power supply reverse polarity protection, Output short-circuit protection, Mutual interference prevention
Response time Operation or reset: 0.5 ms max.
Sensitivity adjustment Two-turn endless adjuster with an indicator
Timer function (Only on Sen-
sors with the timer function) 0 to 100 ms OFF-delay variable adjuster
Turbo function (Only on Sen-
sors with the turbo function) Yes (with turbo switch) ---
Ambient illumination (Receiv-
er side)
Incandescent lamp: 5,000 lx max.
Sunlight: 10,000 lx max.
Ambient temperature Operating: −25°C to 55°C (with no icing or condensation)
Storage: −40°C to 70°C (with no icing or condensation)
Ambient humidity Operating: 35% to 85% (with no condensation)
Storage: 35% to 95% (with no condensation)
Insulation resistance 20 MΩ min. at 500 VDC between current-carrying parts and case
Dielectric strength 1,000 VAC, 50/60 Hz for 1 min. between current-carrying parts and case
Vibration resistance
(destruction) 10 to 55 Hz, 1.5-mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance
(destruction) Destruction: 500m/s2, 3 times each in X, Y, and Z directions
Degree of protection IEC IP67; NEMA: 4X (indoors only) *2
Connection method Pre-wired (standard length: 2 m) or M12 connector
Weight (packed state)
Pre-wired cable:
Approx. 150 g
Connector: Approx. 70 g
Pre-wired cable:
Approx. 110 g
Connector: Approx. 60 g
Pre-wired cable: Approx. 90 g
Connector: Approx. 50 g
Material
Case PBT
Lens Denatured polyallylate
Mounting
Bracket Stainless steel (SUS304)
Accessories Mounting bracket (with screws), Sensitivity adjustment driver, Sensitivity adjusting knob, Instruction sheet, Close mounting plate
(only for Sensors with connectors), and Reflector (only for Retro-reflective Sensors)
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E3S-A
Engineering Data (Typical)
Parallel Sensing Range
Through-beam Sensors Through-beam Sensors Through-beam Sensors
E3S-AT@@ E3S-AT@@ + E39-S46
(Slit Sold Separately)
E3S-AT@@ + E39-E6
(Filter Sold Separately)
Parallel Sensing Range Sensing Range
Retro-reflective Sensors Diffuse-reflective Sensors
E3S-AR@@ + E39-R1 (with Reflector) E3S-AD@1/AD@2/AD@3/AD@6/AD@7/AD@8
Excess Gain vs. Set Distance
Through-beam Sensors Retro-reflective Sensors
E3S-AT@@ E3S-AR@@ + E39-R1 (with Reflector)
500
400
300
200
100
0
−100
−200
−300
−400
−500
2 4 6 8
Distance X (m)
Distance Y (mm)
Y
X
200
100
0
−100
−200
1 2 3 4 5 6 7 8
Slit width: 1 mm
Slit width: 0.5 mm
Slit width: 2 mm
Y
X
Distance X (m)
Distance Y (mm)
200
100
0
−100
−200
1 2 3 4 5 6
Y
X
Distance X (m)
Distance Y (mm)
Y
X
100
80
60
40
20
0
−20
−40
−60
−80
−100
0.5 1.0 1.5 2.0 2.5
E39-R1 Reflector
Distance X (m)
Distance Y (mm)
Y
X
40
30
20
10
0
−10
−20
−30
−40
200
400 600 800
Sensing object: white paper
E3S-AD@1/@3/@6/@8: 100 × 100 mm
E3S-AD@2/@7: 200 × 200 mm
E3S-AD@1/@6
E3S-AD@3/@8
E3S-AD@2/@7
Distance X (m)
Distance Y (mm)
500
300
100
50
30
10
5
3
1
0 3 5 7 10
Oper-
ating
level
Distance (m)
Excess gain ratio (times)
100
50
30
10
5
3
1
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6
E39-R1 Reflector
Oper-
ating
level
Distance (m)
Excess gain ratio (times)
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E3S-A
I/O Circuit Diagrams
NPN Output
Diffuse-reflective Sensor Diffuse-reflective Sensor Sensing Object Size vs. Sensing
Distance
E3S-AD@1/AD@2/AD@3/AD@6/AD@7/
AD@8 (Detection of White Paper)
E3S-AD@1/AD@2/AD@3/AD@6/AD@7/
AD@8 (Detection of Black Paper)
E3S-AD@1/AD@2/AD@3/AD@6/AD@7/
AD@8
Model Operation
mode Timing charts
Mode
selector
switch
Output circuit
E3S-AT11
E3S-AT16
E3S-AT61
E3S-AT66
E3S-AR11
E3S-AR16
E3S-AR61
E3S-AR66
E3S-AD11
E3S-AD16
E3S-AD61
E3S-AD66
E3S-AD12
E3S-AD17
E3S-AD62
E3S-AD67
E3S-AD13
E3S-AD18
E3S-AD63
E3S-AD68
Light-ON L Side
(LIGHT ON)
Through-beam Receivers, Retro-reflective Sensors, Diffuse-reflective
Sensors
Dark-ON D Side
(DARK ON)
Through-beam Emitters
500
300
100
50
30
10
5
3
1
0.50 0.2 0.4 0.6 0.8 1 1.2
E3S-AD@3/@8
E3S-AD@2/@7
E3S
-AD@1/@6
Oper-
ating
level
Distance (m)
Sensing object: White paper
E3S-AD@1/@3/@6/@8: 100 × 100 mm
E3S-AD@2/@7: 200 × 200 mm
Excess gain ratio (times)
100
50
30
10
5
3
1
0.5
0.3
0.1
0 200 400 600 800
E3S-AD@3/@8
E3S-AD@2/@7
E3S
-AD@1/@6
Oper-
ating
level
Distance (mm)
Sensing object: Black paper
E3S-AD@1/@3/@6/@8: 100 × 100 mm
E3S-AD@2/@7: 200 × 200 mm
Excess gain ratio (times)
1.2
1
0.8
0.6
0.4
0.2
0
Side of object (mm)
50 × 50 100 × 100 200 × 200 300 × 300
E3S-AD@1/@6
E3S-AD@3/@8
OFF
ON
OFF
ON
OFF
ON
E3S-AD@2/@7
Sensing object: white paper
Distance (m)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between brown and black)
Output
transistor
Load
(e.g., relay)
Connector Pin Arrangement
Note: Pin 2 is not used.
1
3
4
Light
indi-
cator
Stability
indicator
Photo-
electric
Sensor
main
circuit
Z
D
Load
Brown
Blue
Black
(Control
output)
(Relay)
100 mA max. 10 to
30 VDC
(red)
(green)
3
1
24
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between brown and black)
Output
transistor
Load
(e.g., relay)
Connector Pin Arrangement
Note: Pins 2 and 4 are not used.
3
1
Power
indica-
tor Photo-
electric
Sensor
main
circuit
Brown
Blue
10 to
30 VDC
(red) 3
1
24
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E3S-A
Structure of Sensor I/O Connector
E3S-AT21
E3S-AT71
E3S-AD21
E3S-AD71
E3S-AD22
E3S-AD72
E3S-AD23
E3S-AD73
Light-ON L Side
(LIGHT ON)
Through-beam Receivers, Diffuse-reflective Sensors
Dark-ON D Side
(DARK ON)
--- ---
Through-beam Emitters
E3S-AR21
E3S-AR71
Light-ON L Side
(LIGHT ON)
Retro-reflective Sensors
Dark-ON D Side
(DARK ON)
Model Operation
mode Timing charts
Mode
selector
switch
Output circuit
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between brown and black)
Output
transistor
Load
(e.g., relay)
(Self-diagnostic
output)
Z
D
Z
D
Light
indica-
tor
Stability
indicator
(green)
Photo-
electric
Sensor
main
circuit
Load
(relay)
Brown
Blue
Black
(Control
output)
100 mA max.
10 to
30 VDC
(red)
Load
(relay)
Orange
50 mA max.
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between brown and black)
Output
transistor
Load
(e.g., relay)
External
diagnostic
input
Emitter LED
Indicator
(red)
ON
OFF
ON
OFF
ON
OFF
(Between blue and pink)
0 V
(External
diagnostic input)
Power indicator
(red)
Photo-
electric
Sensor
main
circuit
Brown
Blue
10 to 30 VDC
Pink
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between brown and black)
Output
transistor
Load
(e.g., relay)
12 K
(External
diagnostic input)
(Self-diagnostic
output)
Z
D
Light
indica-
tor
Stability
indicator
(green)
Photo-
electric
Sensor
main
circuit
Load
(relay)
Brown
Blue
Black
(Control
output)
100 mA max.
10 to
30 VDC
(red)
Load
(relay)
Orange
50 mA max.
Z
D
Pink
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between brown and black)
Output
transistor
Load
(e.g., relay)
2
4
13
1
2
3
4
Terminal No.
XS2F-D421-DC0-A
Brown
Blue
Black
Note: Pin No. 2 is not used.
Classification Wire color Connection Pin No. Application
For DC
Brown 1 +V
--- 2 ---
Blue 3 0 V
Black 4 Output
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
PNP Output
Model Operation
mode Timing charts
Mode
selector
switch
Output circuit
E3S-AT31
E3S-AT36
E3S-AT81
E3S-AT86
E3S-AR31
E3S-AR36
E3S-AR81
E3S-AR86
E3S-AD31
E3S-AD36
E3S-AD81
E3S-AD86
E3S-AD32
E3S-AD37
E3S-AD82
E3S-AD87
E3S-AD33
E3S-AD38
E3S-AD83
E3S-AD88
Light-ON L Side
(LIGHT ON)
Through-beam Receivers, Retro-reflective Sensors, Diffuse-reflective
Sensors
Dark-ON D Side
(DARK ON)
Through-beam Model Emitters
E3S-AT41
E3S-AT91
E3S-AD41
E3S-AD91
E3S-AD42
E3S-AD92
E3S-AD43
E3S-AD93
Light ON L Side
(LIGHT ON)
Through-beam Receivers, Diffuse-reflective Sensors
Dark ON D Side
(DARK ON)
--- ---
Through-beam Emitters
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between blue and black)
Output
transistor
Load
(e.g., relay)
Connector Pin Arrangement
Note: Pin 2 is not used.
1
3
4
Light
indica-
tor
Stability
indicator
Photo-
electric
Sensor
main
circuit
Z
D
Load
Brown
Blue
Black (Control output)
(Relay)
10 to
30 VDC
(red)
(green)
100 mA max.
3
1
24
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between blue and black)
Output
transistor
Load
(e.g., relay)
3
1
Light
indica-
tor Photo-
electric
Sensor
main
circuit
Brown
Blue
10 to
30 VDC
(red)
Connector Pin Arrangement
Note: Pins 2 and 4 are not used.
3
1
24
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between blue and black)
Output
transistor
Load
(e.g., relay)
(Self-diagnostic
output)
Z
D
Z
D
Light
indica-
tor
Stability
indicator
(green)
Photo-
electric
Sensor
main
circuit
Load
(relay)
Brown
Blue
Black
(Control
output)
100 mA max.
10 to
30 VDC
(red)
Load
(relay)
Orange
50 mA max.
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between blue and black)
Output
transistor
Load
(e.g., relay)
External
diagnostic
input
Emitter LED
Indicator
(red)
ON
OFF
ON
OFF
ON
OFF
(Between brown and pink)
0 V
(External
diagnostic input)
Power indicator
(red)
Photo-
electric
Sensor
main
circuit
Brown
Blue
10 to 30 VDC
Pink
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E3S-A
Structure of Sensor I/O Connector
Adjustment Methods
Sensitivity Adjustment for Diffuse-reflective Sensors Set to Light ON
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.
E3S-AR41
E3S-AR91
Light-ON L Side
(LIGHT ON)
Retro-reflective Sensors
Dark-ON D Side
(DARK ON)
Item Sensing condition Sensitivity adjuster Indicators Procedure
1) Position A
Locate a sensing object at the sensing
distance, set the sensitivity adjuster to
the minimum scale position, and
gradually increase sensitivity by turning
the sensitivity adjuster clockwise until the
incident light indicator (red LED) is ON.
Position A is where the indicator has
turned ON.
2) Position B
Position B is when the sensing object is
removed and the sensitivity adjuster is
turned clockwise until the incident light
indicator (red LED) is ON. Position C is
where the adjuster is turned
counterclockwise (reducing the
sensitivity) from position B until the
incident light indicator (red LED) is OFF.
When there are no background objects,
the maximum sensitivity is position C.
3) Setting ---
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.
Model Operation
mode Timing charts
Mode
selector
switch
Output circuit
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between blue and black)
Output
transistor
Load
(e.g., relay)
4.4 K
(External
diagnostic input)
(Self-diagnostic
output)
ZD
Light
indica-
tor
Stability
indicator
(green)
Photo-
electric
Sensor
main
circuit
Load
(relay)
Brown
Blue
Black
(Control
output)
100 mA max.
10 to
30 VDC
(red)
Load
(relay)
Orange
50 mA
max.
Pink
ZD
T
T: OFF-delay timer (0 to 100 ms)
Incident light
No incident light
ON
OFF
ON
OFF
Operate
Reset
Light indicator
(red)
(Between brown and black)
Output
transistor
Load
(e.g., relay)
2
4
13
1
2
3
4
Terminal No.
XS2F-D421-DC0-A
Brown
Blue
Black
Note: Pin 2 is not used.
Classification Wire color Connection Pin No. Application
For DC
Brown 1 +V
--- 2 ---
Blue 3 0 V
Black 4 Output
Photoelectric
Sensor
Sensing object
Backg-
round
object
Min. Max.
(A)
Stability
indicator
(green)
Light
indicator
(red)
ON → OFF OFF → ON
Photoelectric
Sensor
Sensing object
Backg-
round
object
Min. Max.
(B)
(C)
ON → OFF ON → OFF
Stability
indicator
(green)
Light
indicator
(red)
Min. Max.
(C)
(A)
ON ON → OFF
Stability
indicator
(green)
Light
indicator
(red)
http://www.ia.omron.com/ 9
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Safety Precautions
This product is not designed or rated for
ensuring safety of persons.
Do not use it for such purposes.
Do not use the product in atmospheres or environments that
exceed product ratings.
Mounting
Position of Optical Axis of Through-beam Model
Unlike conventional through-beam sensors, the E3S-A
Through-beam Photoelectric Sensor incorporates 2 lenses.
The lens actually in use is the one marked with an arrow
indicating the position of the optical axis. When using a Slit,
attach it to the lens marked with the arrow.
Tightening the Connector
Manually tighten the connector until the threads have
completely disappeared. If tightening is insufficient, the
degree of protection may not be maintained, or the connector
may become loose when it is subjected to vibration. Using
pliers to tighten the connector may damage it.
Use the E39-L60 Close Mounting Plate (provided) if the
Sensor is mounted using mounting brackets or if it is mounted
directly. (Refer to Dimensions.)
Mounting Bracket (Provided)
The direction of the optical axis coincides with the machine
axis of the E3S-A when the mounting screw is inserted into
the lock hole of the Mounting Bracket. If the mounting surface
and the screw hole are correctly aligned toward the sensing
object (or toward the Retroreflector for a Through-beam
Sensor), the mechanical axis and optical axis will be aligned
when the screw is inserted into the hole. Incident light will be
detected, and time-consuming adjustment will not be
necessary. (If, however, the mounting surface is not flat,
adjustment of the optical axis may still be required.)
Adjust the position of the Sensor so that incident light points
at the center. Make sure that the incident light is at a fixed
position.
The maximum tightening torque of the screw is 0.53 N.m max.
● Adjustments
E39-S46 Through-beam Slits
(Accessory, order separately)
Use the rubber attachment with the metal cover if a slit width
of 2 mm is required. (A Slit is not required in this case.) Insert
the 0.5- or 1-mm Slit between the metal cover and rubber
attachment if a slit width of 0.5 or 1 mm is desired.
These Slits fit into the rubber attachment.
Apply the Slit to the lens of the Photoelectric Sensor marked
with an arrow indicating the position of the optical axis (apply
it to the bottom lens of Horizontal Sensors and the top lens of
Vertical Sensors).
WARNING
Precautions for Correct Use
Unused lens
Optical axis indicator arrow
Arrow indicating optical axis position
Lens actually in use (attach the Slit to this lens)
Position of Arrow Indicating Optical Axis
Model Position of lens in use
E3S-A
(Vertical Sensors) Top
E3S-A
(Horizontal
Sensors)
Bottom
Screw
Optical axis
Machine axis
Base of mounting
bracket
Bracket can move
in this direction
Optical axis lock hole (M3)
Arrow indicating
position of optical axis
2 mm
13.6 mm
11.1 mm
Metal cover
Slit (0.5 mm or 1 mm)
Rubber attachment
Indented portions
E3S-A
http://www.ia.omron.com/ 10
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
E39-E6 Polarized Mutual Interference Prevention Filters
for Through-beam Sensors
(Accessory, order separately)
•A set of 4 Filters are sold together for two Through-beam
Sensors (for 2 each for Emitters and Receivers). Order one
for every two sets of Photoelectric Sensors.
•For mounting, refer to the figure of the Through-beam Slits.
•The arrow printed on the cover indicates the direction of
polarization. By attaching the Filters opposite to each other
in polarization to the Emitters and the Receivers in rows,
mutual interference can be prevented (in any case, the
Filter attached to an Emitter and to the corresponding
Receiver must be the same in direction of polarization or the
Photoelectric Sensor will not function).
Operating Mode Selection
As shown in the following illustration, the E3S-A has an
operating mode selector on the panel where the Receiver
connector is located.
With this operating mode selector, the E3S-A is in either Dark-
ON or Light-ON mode.
and Switch
The Emitter of the Through-beam Sensor with the self-
diagnostic feature incorporates a turbo switch. When this
switch is ON, the intensity of the red LED light source can be
increased to make a brighter spot.
Function ( Switch)
The turbo function is effective with the turbo switch pressed,
and the function is reset automatically when released.
With the turbo function switched ON, the light spot is visible
even at a distance of 200 mm, making it easy to check the
sensing position and the angle of the optical axis.
Precautions
(1)Do not keep the turbo switch pressed for longer than 3
minutes. (It will not break even if it is pressed for an
extended period.)
(2)Pressing the switch may change the timer delay settings.
Set the timer after using the turbo function to check the
optical axis.
(3)To press the switch, use a force of 9.8 N max.
Using the E39-R5 Optical Axis Reflector for Through-
beam Sensors
(Accessory, order Separately)
Use this attachment when the set distance is long and
adjustment is mechanically difficult with a sensing object.
•Attach the Reflector to the Receiver.
•Look at the Reflector from right behind the Emitter. The
Reflector should be bright with red light when the optical
beam strikes the Reflector. If the Emitter has a turbo
function, the Reflector looks brighter with the function
switched ON.
•When the Reflector is removed, the light beam strikes the
Receiver.
Emitter
Receiver
Up to two units
can be attached.
Y = 0
Note: The arrows on the Filters can be attached in
either direction when two Sensors are
mounted next to each other. The Filter
attached to an Emitter and to the
corresponding Receiver must be the same
in direction of polarization or the Sensor will
not function.
Light ON
(ON when light is ON)
Operating mode switch (black)
Dark ON
(ON when light is OFF)
DL
The default operating mode is shown in the
following table.
Sensing method Default switch
setting
Through-beam Sensors
Retro-reflective Sensors Dark-ON
Diffuse-reflective Sensors Light-ON
Timer Tu r b o
Tu r b o Tu r b o
Sensitivity adjuster
The OFF-delay timer adjuster is
used as a turbo switch (black).
The intensity of the
red spot will be
increased, making
visual confirmation
much easier.
PUSH
Eye
E3S-AT@@
Emitter
E3S-AT@@
Receiver
E39-R5
Optical Axis Confirmation Reflector
http://www.ia.omron.com/ 11
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Dimensions
E3S-A Built-in Amplifier Photoelectric Sensor
Through-beam Sensors (Horizontal)
Pre-wired Sensors
(Unit: mm)
Unless otherwise specified, the tolerance class IT16 is used for dimensions in this data sheet.
3.1
Stainless steel
(SUS304)
7.2
5
20
30
10.5
7.2
16.9
28.9
29.2
5.5
1.2
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
10.7
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3S-AT11/21/31/41 (Receiver)
Emitter: E3S-AT@@-L
Receiver: E3S-AT@@-D
*1. Not applicable to Sensors with timer adjusters (E3S-AT11 and E3S-AT31).
*2. The E3S-AT11 or E3S-AT31 has three conductors.
Lens (7 × 7) Optical axis
Two, M3 × 12 screws
1.3
10.5 20
8
21
40
12.9
75.5
(4)
8.8 dia.
12
12.4
Sensitivity adjuster (white)
Light indicator
(red)
Stability indicator (green)
Timer adjuster (black) *1
Operation mode
selector switch
Two, M3 holes
20
4-dia. vinyl-insulated
round cable with
4 conductors
(Conductor cross
section: 0.2 mm2,
Insulator diameter:
1.1 mm),
Standard length: 2 m *2
Mounting Holes
E3S-AT11/31 (Emitter)
29.2
5.5
1.2 10.7
3.1 7.2
5
20
30
10.5
7.2
16.9
28.9
Stainless steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
3.1 7.2
5
20
30
10.5
7.2
16.9
28.9
Optical
axis
E3S-AT21/41(Emitter)
1.3
10.5 20
8
21
Power indicator (red)
40
17.8
(4)
12
12.4
40
12.9 12.5
(4)
8.8 dia.
12
10.5 20
12.4
Turbo switch
20
Lens (7 × 7) Optical axis
Two, M3 × 12 screws
Two, M3 holes
4-dia. vinyl-insulated
round cable with
2 conductors
(Conductor cross
section: 0.2 mm2,
Insulator diameter:
1.1 mm),
Standard length: 2 m
Power indicator (red)
4-dia. vinyl-insulated round
cable with 3 conductors
(Conductor cross section:
0.2 mm2,
Insulator diameter: 1.1 mm),
Standard length: 2 m
8.8 dia.
Mounting Holes
http://www.ia.omron.com/ 12
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Sensors with Standard Connectors
29.2
5.5
1.2 10.7
3.1 7.2
5
7.2
16.9
28.9
20
35.5
10.5 Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3
S
-AT16
/
36
(
Receiver
)
1.3
10.5 20
8
21
40
12.9 7
(10)
12
12.4
20
Lens (7 × 7) Optical axis
Two, M3 × 12 screws
Sensitivity adjuster (white)
Light indicator
(red)
Stability indicator (green)
Operation mode
selector switch
Two, M3
M12 Connector
Mounting Holes
29.2
5.5
1.2 10.7
3.1 7.2
5
20
35.5
10.5 7.2
16.9
28.9
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3S-AT16/36 (Emitter)
40
17.8
(10)
12
12.4
1.3
10.5 20
8
21
20
Two, M3 × 12 screws
Lens (7 × 7) Optical axis
Power indicator (red)
Two, M3
M12 Connector
Mounting Holes
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Through-beam Sensors (Vertical)
Pre-wired Sensors
3.1
20
20
47.2
5.5 5.4 7.2
16.9
28.9
8.3
10.5 20
29.2
1.2 10.7
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 x 12 screws
With Mounting Bracket Attached
E3
S
-AT61
/
71
/
81
/
91
(
Receiver
)
40
1.3
*1. The E3S-AT61 or E3S-AT81 has three conductors.
*2. Not applicable to timer adjuster models E3S-AT61 and E3S-AT81.
5.5
7
3.6
Timer adjuster
(black) *2
21
Sensitivity
adjuster (white)
13.5
(4)
10.5 20
12
12.4
20
Two, M3 × 12 screws
8.8 dia.
Operation mode
selector switch
Two, M3 holes
4-dia. vinyl-insulated
round cable with
4 conductors
(Conductor cross
section: 0.2 mm2,
Insulator diameter:
1.1 mm),
Standard length: 2 m
*1
Lens (7 × 7) Optical axis
Light indicator (red)
Stability indicator
(green)
Mounting Holes
29.2
1.2 10.7
3.1
20
47.2
5.5 5.4 7.2
16.9
28.9
10.5 20
20
8.3
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3
S
-AT61
/
81
(
Emitter
)
E3S-AT71/91 (Emitter)
29.2
1.2 10.7
*The Mounting Bracket can be attached to side A.
A*
Two, M3 × 12 screws
Two, M3 holes
4-dia. vinyl-insulated
round cable
with 2 conductors
(Conductor cross
section: 0.2 mm2,
Insulator diameter:
1.1 mm),
Standard length: 2 m *
Lens (7 × 7) Optical axis
Power indicator (red)
Power indicator (red)
Mounting Holes
8.5
21
*The E3S-AT71 of E3S-AT91
has three conductors.
1.3
10.5 20
12.5
3.6 Turbo switch
21
40
13.5
(4)
8.8 dia.
12
12.4
20
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Connector Sensors
3.1
20
41.7
5.4
7.2
19.4
31.4
Use these
two holes
for
mounting.
29.2
1.2 10.7
10.5 20
8.3
Stainless steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
E39-L60 Close Mounting Plate (provided)
(Attach the mounting plate or the
plug cannot be connected.)
With Mounting Bracket Attached
E3
S
-AT66
/
86
(
Receiver
)
M12
Connector
40
13.5
(10)
12
1.3
10.5 20
Operation
mode
selector
switch
7
3.6
21
Two, M3 holes
20
Two, M3 × 12 screws
Lens (7 × 7) Optical axis
LIght indicator (red)
Stability
indicator
(green)
Sensitivity
adjuster
(white)
Mounting Holes
29.2
1.2 10.7
10.5 20
3.1
20
41.7
5.4
7.2
19.4
31.4
8.3
Use these
two holes
for
mounting.
Stainless steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
E39-L60 Close Mounting Plate (provided)
(Attach the mounting plate or the
plug cannot be connected.)
With Mounting Bracket Attached
E3
S
-AT66
/
86
(
Emitter
)
40
13.5
(10)
12
1.3
10.5 20
8.5
21
20
M12 Connector
Two, M3 × 12 screws
Two, M3 holes
Lens (7 × 7) Optical axis
Power indicator (red)
Mounting Holes
http://www.ia.omron.com/ 15
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Retro-reflective Sensors (Horizontal)
Pre-wired Sensors
Sensors with Connectors
929.2
1.2 10.7
3.1 7.2
5
20
30
10.5
7.2
16.9
28.9
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3
S
-AR11
/
21
/
31
/
41
42.3
15.2
2.3
75.5
(4) *2
12
12.4
11.5
Emitter
Receiver
8.8 dia.
21
1.3
12.8 20
20
*1. For E3S-AR21 and E3S-AR41 only.
*2. 9.7 mm for E3S-AR21 and E3S-AR41.
*3. The E3S-AR11 or E3S-AR31 has three conductors.
Lens (7 × 14)
Optical
axis
Two, M3 × 12 screws
Stability indicator (green)
Light indicator (red)
Operation mode
selector switch
Two, M3 holes
4-dia. vinyl-insulated
round cable
with 5 conductors
(Conductor cross
section: 0.2 mm2,
Insulator diameter:
1.1 mm),
Standard length:
2 m *3
Sensitivity adjuster (white)
Timer adjuster/
Turbo switch (black) *1
Turn to adjust the timer:
push to switch turbo function
Mounting Holes
929.2
1.2 10.7
3.1 7.2
55.5
20
30
7.2
16.9
28.9
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3
S
-AR16
/
36
Connector M12
42.3 (10)
15.2
2.3
7
12
12.4
1.3
12.8 20
11.5
21
20
Emitter
Receiver
Lens (7 × 14)
Optical
axis
Two, M3 × 12 screws
Stability indicator (green)
Light indicator (red)
Operation
mode
selector switch
Two, M3 holes
Sensitivity adjuster (white)
Mounting Holes
http://www.ia.omron.com/ 16
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Retro-reflective Sensors (Vertical)
Pre-wired Sensors
Sensors with Connectors
10.5 20
31.5
1.2 10.7
3.1
20
20
47.2
5.5 5.4 7.2
16.9
28.9
4.8
With Mounting Bracket Attached
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
E3
S
-AR61
/
71
/
81
/
91
40
17
(4) *2
8.8 dia.
12
12.4
1.3
10.5 20
5.5
7
5.9
23.3
20
Emitter
Receiver
*1. Available on E3S-AR71 and E3S-AR91 only.
*2. 9.7 mm for E3S-AR71 and E3S-AR91.
*3. The E3S-AR611 or E3S-AR81 has three conductors.
Lens (5.7 × 10.9)
Optical axis
Two, M3 × 12 screws
Stability indicator
(green)
Light indicator
(red)
Operation mode
selector switch
Two, M3 holes
4-dia. vinyl-insulated
round cable
with 5 conductors
(Conductor cross
section: 0.2 mm2,
Insulator diameter:
1.1 mm),
Standard length:
2 m *3
Sensitivity
adjuster
(white)
Timer adjuster/
Turbo switch (black) *1
Turn to adjust the timer:
push to switch turbo function
Mounting Holes
Four
mounting
holes
10.5 20
31.5
1.2 10.7
3.1
20
41.7
5.4
7.2
19.4
31.4
4.8
Use these
two holes
for
mounting.
Stainless steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
E39-L60 Close Mounting Plate (provided)
(Attach the mounting plate or the
plug cannot be connected.)
With Mounting Bracket Attached
E3
S
-AR66
/
86
M12
Connector
40
17
(10)
12
1.3
10.5 20
7
5.9
23.3
Stability indicator
(green)
20
Mounting Holes
Emitter
Receiver
Lens (5.7 × 10.9)
Optical axis
Two,
M3 × 12 screws
Light indicator (red)
Operation
mode
selector switch
Two, M3 holes
Sensitivity
adjuster
(white)
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Diffuse-reflective Sensors (Horizontal)
Pre-wired Sensors
Sensors with Connectors
29.2
9
1.2 10.7
3.1 7.2
5
20
30
10.5
7.2
16.9
28.9
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3
S
-AD11
/
12
/
13
/
21
/
22
/
23
-AD31/32/33/41/42/43
1.3
10.5 20
11.5
21
40
12.9 7 5.5
(4)
8.8 dia.
12
12.4
20
Emitter
Receiver
*1. Timer adjuster: Not available on E3S-AD11, E3S-AD12, E3S-AD13, E3S-AD31,
E3S-AD32 and E3S-AD33.
Turbo switch: Available on E3S-AD21 and E3S-AD41 only.
*2. The E3S-AD11, E3S-AD12, E3S-AD13, E3S-AD31, E3S-AD32, or E3S-AD33 has three conductors.
Lens (7 × 14)
Optical
axis
Two, M3 × 12 screws
Stability indicator (green)
Light indicator (red)
Operation mode
selector switch
Two, M3 holes
4-dia. vinyl-insulated
round cable
with 4 conductors
(Conductor cross section: 0.2 mm2,
Insulator diameter: 1.1 mm),
Standard length: 2 m *2
Sensitivity adjuster (white)
Timer adjuster/
Turbo switch (black) *1
Turn to adjust the timer:
push to switch turbo function
Mounting Holes
5.5
29.2
9
1.2 10.7
3.1 7.2
5
20
30
7.2
16.9
28.9
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3
S
-AD16
/
17
/
18
/
36
/
37
/
38
11.5
21
10.5 20
40
12.9 7
(10)
12
12.4
20
1.3
Emitter
Receiver
Lens (7 × 14)
Two, M3 × 12 screws
Stability indicator (green)
Light indicator (red)
Operation mode
selector switch
Two, M3 holes
Sensitivity adjuster (white)
Optical
axis
M12 Connector
Mounting Holes
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Diffuse-reflective Sensors (Vertical)
Pre-wired Sensors
Sensors with Connectors
29.2
1.2 10.7
10.5 20
3.1
20
20
47.2
5.5 5.4 7.2
16.9
28.9
4.8
Stainless
steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
With Mounting Bracket Attached
E3
S
-AD61
/
62
/
63
/
71
/
72
/
73
-AD81/82/83/91/92/93
5.5
7
3.6
21
1.3
10.5 20
40
17
(4)
8.8 dia.
12
12.4
20
Emitter
Receiver
*1. E3S-AD61, E3S-AD62, E3S-AD63, E3S-AD81, E3S-AD82, and E3S-AD83 have
three conductors.
*2. Timer adjuster: Not available on E3S-AD61, E3S-AD62, E3S-AD63, E3S-AD81,
E3S-AD82 and E3S-AD83.
Turbo switch: Available on E3S-AD71 and E3S-AD91 only.
Lens (7 × 14)
Optical axis
Two, M3 × 12 screws
Stability indicator
(green)
Light indicator (red)
Operation mode
selector
Two, M3 holes
4-dia. vinyl-insulated
round cable
with 4 conductors
(Conductor cross
section: 0.2 mm2,
Insulator diameter:
1.1 mm),
Standard length:
2 m *1
Sensitivity
adjuster
(white)
Timer adjuster/
Turbo switch (black) *2
Turn to adjust the timer:
push to switch turbo function
Mounting Holes
E3
S
-AD66
/
67
/
68
/
86
/
87
/
88
29.2
1.2 10.7
10.5 20
3.1
20
41.7
5.4
7.2
19.4
31.4
4.8
Use these
two holes
for
mounting.
Stainless steel
(SUS304)
*The Mounting Bracket can be attached to side A.
Optical axis
Optical
axis
A*
Two, M3 × 12 screws
E39-L60 Close Mounting Plate (provided)
(Attach the mounting plate or the
plug cannot be connected.)
With Mounting Bracket Attached
7
3.6
21
1.3
10.5 20
40
17
(10)
12
20
Receiver
Lens (7 × 14)
Optical axis
Two, M3 × 12 screws
Stability indicator
(green)
Light indicator (red)
Operation
mode
selector switch
Two, M3 holes
Sensitivity
adjuster
(white)
Emitter
Connector
M12
Mounting Holes
http://www.ia.omron.com/ 19
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
E3S-A
Accessories (Order Separately)
Reflectors
Mounting Brackets
Insert-type Long Slit (For Through-beam Model)
E39-S46
Name Dimensions A Material Quantity
Supporter 2 mm Stainless steel
(SUS304)
One each for Emitter and
Receiver (total of 2)
Slits 0.5 mm PVC One each for Emitter and
Receiver (total of 4)
1 mm
A
A
21.4 13.6
9.7
11.6 6.8
2.1
A
2.1
21.4
11.6 6.8
*
Filters for Mutual Interference Prevention
(For Through-beam Model)
E39-E6
Material: Stainless steel (SUS304)
* Two of each for the Emitter and
Receiver (total of four)
25
59.9
7.5
40.9
11.2
15.9
11.7
9.7
7.9 11.6
Bracket to be attached
to the Emitter panel of
E3S-A
Material:
Reflector: Acryl
Back: ABS
Optical Axis Confirmation Reflector
(For Through-beam Model)
E39-R5
In the interest of product improvement, specifications are subject to change without notice.
http://www.ia.omron.com/ 20
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Photoelectric Sensors Technical Guide
General Precautions
For precautions on individual products, refer to Safety Precautions in individual product information.
These Sensors cannot be used in safety devices for
presses or other safety devices used to protect
human life. These Sensors are designed for use in
applications for sensing workpieces and workers
that do not affect safety.
To ensure safety, always observe the following precautions.
● Wiring
● Operating Environment
(1) Do not use a Sensor in an environment where there are explosive or inflammable gases.
(2) Do not use the Sensor in environments where the cables may become immersed in oil or other liquids or where liquids may penetrate the
Sensor. Doing so may result in damage from burning and fire, particularly if the liquid is flammable.
WARNING
Precautions for Safe Use
Item Typical examples
Power Supply Voltage
Do not use a voltage in
excess of the operating
voltage range.
Applying a voltage in excess
of the operating voltage
range, or applying AC power
(100 VAC or greater) to a DC
Sensor may cause explosion
or burning.
---
Load Short-circuiting
Do not short-circuit the load.
Doing so may cause explo-
sion or burning.
Incorrect Wiring
Do not reverse the power
supply polarity or otherwise
wire incorrectly. Doing so
may cause explosion or
burning.
Connection without a
load
If the power supply is
connected directly without a
load, the internal elements
may burst or burn. Be sure to
insert a load when
connecting the power
supply.
Load
Sensor
Brown
Blue Black
• DC Three-wire NPN Output Sensors
+
-
(Load
short
circuit)
Load
Sensor
Brown
Blue Black
• DC Three-wire NPN Output Sensor
(Load short circuit)
Load
Sensor
Brown
Blue
• AC Two-wire Sensors
Example: E3E2
-
+
Load
Sensor
Brown
Blue Black
• DC Three-wire NPN Output Sensors
Example: Incorrect Polarity
+
-
-
+
Load
Load
Sensor
Brown
Blue Black
Sensor
Brown
Black Blue
• DC Three-wire NPN Output Sensors
Example: Incorrect Polarity Wiring
12 to
24VDC
0V
Sensor
Brown
Blue
Black
• DC Three-wire NPN Output Sensors
Sensor
Brown
Blue
• AC 2-wire Sensors
Example: E3E2 etc.
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Photoelectric Sensors Technical Guide
● Design
Power Reset Time
The Sensor will be ready to detect within approximately 100 ms after
the power is turned ON.
If the Sensor and the load are connected to separate power supplies,
turn ON the Sensor power before turning ON the load power. Any
exceptions to this rule are indicated in Safety Precautions in individual
product information.
Turning OFF Power
An output pulse may be generated when the power is turned OFF. It
is recommended that the load or load line power be turned OFF
before the Sensor power is turned OFF.
Power Supply Types
An unsmoothed full-wave or half-wave rectifying power supply cannot
be used.
Mutual Interference
Mutual interference is a state where an output is unstable because the Sensors are affected by light from the adjacent Sensors.
The following measures can be taken to avoid mutual interference.
Precautions for Correct Use
Counter-
measure Concept Through-beam Sensors Reflective Sensors
1
Use a Sensor
with the
interference
prevention
function.
If Sensors are mounted in close proximity, use Sensors with the interference prevention function.
10 or fewer Sensors: E3X-DA@-S, E3X-MDA, E3C-LDA Fiber Sensors
Performance, however, will depend on conditions. Refer to pages E3X-DA-S/E3X-MDA
and E3C-LDA.
5 or fewer Sensors: E3X-NA Fiber Sensors
2 or fewer Sensors: E3T, E3Z, E3ZM, E3ZM-C, E3S-C, E3G-L1/L3, or E3S-C Built-in Amplifier Photoelectric
Sensors (except Through-beam Sensors)
E3C Photoelectric Sensor with separate amplifier
2
Install an
inference
prevention
filter.
A mutual interference prevention polarizing filter can be
installed on only the E3Z-TA to allow close-proximity
mounting of up to 2 Sensors.
Mutual Interference Prevention Polarizing Filter: E39-E11
---
3
Separate
Sensors to
distance where
interference
does not occur.
Check the parallel movement distance range in the
catalog, verify the set distance between adjacent
Sensors, and install the Sensors accordingly at a
distance at least 1.5 times the parallel movement
distance range.
If the workpieces move from far to near, chattering may
occur in the vicinity of the operating point. For this type of
application, separate the Sensors by at least 1.5 times the
operating range.
4
Alternate
Emitters and
Receivers.
Close mounting of Sensors is possible by alternating
the Emitters with the Receivers in a zigzag fashion (up
to two Sensors). However, if the workpieces are close
to the Photoelectric Sensors, light from the adjacent
Emitter may be received and cause the Sensor to
change to the incident light state.
---
5
Offset the
optical axes.
If there is a possibility that light from another Sensor
may enter the Receiver, change the position of the
Emitter and Receiver, place a light barrier between the
Sensors, or take other measures to prevent the light
from entering the Receiver.
(Light may enter even if the Sensors are separated by
more than the sensing distance.)
If Sensors are mounted in opposite each other, slant the
Sensors as shown in the following diagram. (This is
because the Sensors may affect each other and cause
output chattering even if separated by more than the
Sensor sensing distance.)
6Adjust the
sensitivity.
Lowering the sensitivity will generally help.
L
1.5 × L
Sensor Sensor
Workpiece
Workpiece
Emitter
Receiver
Receiver
Emitter
Workpiece
Sensor Sensor
θθ
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Photoelectric Sensors Technical Guide
Noise
Countermeasures for noise depend on the path of noise entry, frequency components, and wave heights. Typical measures are as given in the
following table.
● Wiring
Cable
Unless otherwise indicated, the maximum length of cable extension is
100 m using wire that is 0.3 mm2 or greater.
Exceptions are indicated in Safety Precautions in individual product
information.
Cable Tensile Strength
When wiring the cable, do not subject the cable to a tension greater than
that indicated in the following table.
Note: Do not subject a shielded cable or coaxial cable to tension.
Repeated Bending
Normally, the Sensor cable should not be bent repeatedly.
(For bending-resistant cable, see Attachment to Moving Parts on
page C-4.)
Separation from High Voltage (Wiring Method)
Do not lay the cables for the Sensor together with high-voltage lines
or power lines. Placing them in the same conduit or duct may cause
damage or malfunction due to induction interference. As a general
rule, wire the Sensor in a separate system, use an independent metal
conduit, or use shielded cable.
Work Required for Unconnected Leads
Unused leads for self-diagnosis outputs or other special functions
should be cut and wrapped with insulating tape to prevent contact with
other terminals.
Type of noise Noise intrusion path and countermeasure
Before countermeasure After countermeasure
Common mode noise
(inverter noise)
Common noise
applied between the
mounting board and
the +V and 0-V
lines, respectively.
Noise enters from the noise source through the frame
(metal).
(1) Ground the inverter motor (to 100 Ω or less)
(2) Ground the noise source and the power supply (0-V
side) through a capacitor (film capacitor, 0.22 μF, 630
V).
(3) Insert an insulator (plastic, rubber, etc.) between the
Sensor and the mounting plate (metal).
Radiant noise
Ingress of high-fre-
quency electromag-
netic waves directly
into Sensor, from
power line, etc.
Noise propagates through the air from the noise source
and directly enters the Sensor.
•Insert a shield (copper) plate between the Sensor and
the noise source e.g., a switching power supply).
•Separate the noise source and the Sensor to a distance
where noise does not affect operation.
Power line noise
Ingress of electromag-
netic induction from
high-voltage wires
and switching noise
from the switching
power supply
Noise enters from the power line. •Insert a capacitor (e.g., a film capacitor), noise filter (e.g.,
ferrite core or insulated transformer), or varistor in the
power line.
IM
Sensor
Noise
+V
0V
Inverter
motor
Mounting block
(metal)
IM
Sensor
Insert an insulator.
Inverter motor
+V
0V
Noise
Noise
Mounting block
(metal)
(3)
(2)
(1)
Noise
Sensor
Noise
source
+V
0V
Sensor
Shield plate (copper)
Noise
source
+V
0V
Sensor
Noise
Noise +V
0V
Sensor
Insert a capacitor, etc.
Noise +V
0V
Cable diameter Tensile strength
Less than 4 mm 30 N max.
4 mm or greater 50 N max.
Power line
http://www.ia.omron.com/ C-3
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Photoelectric Sensors Technical Guide
Power Supply
When using a commercially available switching regulator, ground the
FG (frame ground) and G (ground) terminals.
If not grounded, switching noise in the power supply may cause
malfunction.
Example of Connection with S3D2 Sensor Controller
DC Three-wire NPN Output Sensors
Reverse operation is possible using the signal input switch on the
S3D2.
● Mounting
Attachment to Moving Parts
To mount the Photoelectric Sensor to a moving part, such as a robot
hand, consider using a Sensors that uses a bending-resistant cable
(robot cable).
Although the bending repetition tolerance of a standard cable is
approximately 13,000 times, robot cable has an excellent bending
tolerance of approximately 500,000 times.
Cable Bending Destruction Test (Tough Wire Breaking
Test)
With current flowing, bending is repeated to check the number of
bends until the current stops.
The testing conditions of the standard cable and robot cable are
different.
Refer to the values in the above table to check bend-resistant
performance under actual working conditions.
5
2
4
1
6
3
11
8
10
7
12
9
S3D2
Blue 0 V
Black OUT
Brown +12 V
Specimen Standard cable
VR (H) 3 x18/0.12
Robot cable: Strong,
conductive electrical wire
2 x 0.15 mm
2
, shielded
Test
Description/conditions
Bending
angle (θ)Left/right 90° each Left/right 45° each
Bending
repetitions --- 60 bends/minute
Weight 300g 200g
Operation
per bending
(1) through (3) in
figure once
(1) through (3) in
figure once
Bending
radius of
support
points (R)
5 mm 2.5 mm
Result Approx. 13,000 times Approx. 500,000 times
Weight
R
(1) (3)
(2)
θθ
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Photoelectric Sensors Technical Guide
Securing Fibers
The E3X Fiber Unit uses a one-touch locking mechanism. Use the
following methods to attach and remove Fiber Units.
(1) Attaching Fibers
Open the protective cover, insert the fiber up to the insertion mark on
the side of the Fiber Unit, and then lower the lock lever.
(2) Removing Fibers
Open the protective cover, lift up the lock lever, and pull out the fibers.
● Adjustments
Optical Axis Adjustment
Move the Photoelectric Sensor both vertically and horizontally and set
it in the center of the range in which the operation indicator is lit or not
lit. For the E3S-C, the optical axis and the mechanical axis are the
same, so the optical axis can be easily adjusted by aligning the
mechanical axis.
Optical axis: The axis from the center of the lens to the center of
the beam for the Emitter and the axis from the
center of the lens to the center of the reception area
for the Receiver.
Mechanical axis: The axis perpendicular to the center of the lens.
Note:1.To maintain the fiber characteristics, make sure that the lock
is released before removing the fibers.
2. Lock and unlock the fibers at an ambient temperature of
−10 to 40°C.
9mm
Insertion
position
Locked
position
Lock released position
Protective cover
Lock lever
Fiber insertion mark
Fiber
Locked position
Lock released
position
Protective cover
l
1
2
Emitter
Receiver
Incident indicator or Operation indicato
r
ON OFF
Incident indicator or Operation indicato
r
Optimum value
ON OFF
Emitter Receiver
Emission beam
Optical axis Optical axis
Mechanical axis
Reception area
http://www.ia.omron.com/ C-5
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
Photoelectric Sensors Technical Guide
● Operating Environment
Water Resistance
Do not use in water, in rain, or outside.
Ambient Conditions
Do not use this Sensor in the following locations. Otherwise, it may
malfunction or fail.
(1) Locations exposed to excessive dust and dirt
(2) Locations exposed to direct sunlight
(3) Locations with corrosive gas vapors
(4) Locations where organic solvents may splash onto the Sensor
(5) Locations subject to vibration or shock
(6) Locations where there is a possibility of direct contact with water,
oil, or chemicals
(7) Locations with high humidity and where condensation may result
Environmentally Resistive Sensors
The E32-T11F/T12F/T14F/T81F-S/D12F/D82F and E3HQ can be used
in locations (3) and (6) above.
Optical Fiber Photoelectric Sensors in Explosive Gas
Atmospheres
The Fiber Unit can be installed in the hazardous area, and the
Amplifier Unit can be installed in a non-hazardous area.
<Reason>
For explosion or fire due to electrical equipment to occur, both the
hazardous atmosphere and a source of ignition must be in the same
location. Optical energy does not act as an ignition source, thus there
is no danger of explosion or fire. The lens, case, and fiber covering are
made of plastic, so this setup cannot be used if there is a possibility of
contact with solvents that will corrode or degrade (e.g., cloud) the
plastic.
<Ignition Source>
Electrical sparks or high-temperature parts that have sufficient energy
to cause explosion in a hazardous atmosphere are called ignition
sources.
Influence from External Electrical Fields
Do not bring a transceiver near the Photoelectric Sensor or its wiring,
because this may cause incorrect operation.
● Maintenance and Inspection
Points to Check When the Sensor Does Not Operate
•If the Sensor does not operate, check the following points.
(1) Are the wiring and connections correct?
(2) Are any of the mounting screws loose?
(3) Are the optical axis and sensitivity adjusted correctly?
(4) Do the sensing object and the workpiece speed satisfy the ratings
and specifications?
(5) Are any foreign objects, such as debris or dust, adhering to the
Emitter lens or Receiver lens?
(6) Is strong light, such as sunlight (e.g., reflected from a wall), shining
on the Receiver?
(7) Do not attempt to disassemble or repair the Sensor under any
circumstances.
(8) If you determine that the Sensor clearly has a failure, immediately
turn OFF the power supply.
Lens and Case
The lens and case of the Photoelectric Sensor are primarily made of
plastic. Dirt should be gently wiped off with a dry cloth. Do not use
thinner or other organic solvents.
•
The case of the E3ZM, E3ZM-C and E3S-C is metal. The lens,
however, is plastic.
● Accessories
Using a Reflector (E39-R3/R37/RS1/RS2/RS3)
During Application
(1) When using adhesive tape on the rear face, apply it after washing
away oil and dust with detergent. The Reflector cannot be
mounted if there is any oil or dirt remaining.
(2) Do not press on the E39-RS1/RS2/RS3 with metal or a
fingernail.This may weaken performance.
(3) This Sensor cannot be used in locations where oil or chemicals
may splash on the Sensor.
M8 and M12 Connectors
•Be sure to connect or disconnect the connector after turning OFF
the Sensor.
•Hold the connector cover to connect or disconnect the connector.
•Secure the connector cover by hand. Do not use pliers, otherwise
the connector may be damaged.
•If the connector is not connected securely, the connector may be
disconnected by vibration or the proper degree of protection of the
Sensor may not be maintained.
● Others
Values Given in Typical Examples
The data and values given as typical examples are not ratings and
performance and do not indicate specified performance. They are
rather values from samples taken from production lots, and are
provided for reference as guidelines. Typical examples include the
minimum sensing object, engineering data, step (height) detection
data, and selection list for specifications.
Cleaning
•Keep organic solvents away from the Sensor. Organic solvents will
dissolve the surface.
•Use a soft, dry cloth to clean the Sensor.
Non-hazardous area
Amplifier Unit
Fiber Unit
Sensing object
Hazardous area
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(c)Copyright OMRON Corporation 2008 All Rights Reserved.
2008.9
OMRON Corporation
Industrial Automation Company
http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2008 All Rights Reserved.
In the interest of product improvement, specifications are subject to change without notice.
Read and Understand This Catalog
Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or
comments.
Warranty and Limitations of Liability
WARRANTY
OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if
specifi ed) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR
FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE
HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS, OR COMMERCIAL
LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR
STRICT LIABILITY.
In no event shall responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS
OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT
SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.
Application Considerations
SUITABILITY FOR USE
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's
application or use of the product.
At the customer's request, OMRON will provide applicable third party certifi cation documents identifying ratings and limitations of use that apply to the
products. This information by itself is not suffi cient for a complete determination of the suitability of the products in combination with the end product,
machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible
uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:
• Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this catalog.
• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety
equipment, and installations subject to separate industry or government regulations.
• Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE
SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT IS PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
Disclaimers
CHANGE IN SPECIFICATIONS
Product specifi cations and accessories may be changed at any time based on improvements and other reasons.
It is our practice to change model numbers when published ratings or features are changed, or when signifi cant construction changes are made.
However, some specifi cations of the product may be changed without any notice. When in doubt, special model numbers may be assigned to fi x
or establish key specifi cations for your application on your request. Please consult with your OMRON representative at any time to confi rm act u a l
specifi cations of purchased product.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.
ERRORS AND OMISSIONS
The information in this catalog has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical,
typographical, or proofreading errors, or omissions.
PERFORMANCE DATA
Performance data given in this catalog is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent
the result of OMRON’s test conditions, and the users must correlate it to actual application requirements. Actual performance is subject to the OMRON
Warranty and Limitations of Liability.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.
COPYRIGHT AND COPY PERMISSION
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