Omron E3S-A - User manual

E3S-A
A-231E3S-A
Built-in Amplifier Photoelectric Sensor
E3S-A
Ordering Information
E3S-A General-purpose Sensors
Connections Appearance Sensing
method
Sensing
distance
Operating
modes
Output / timer
functions
Model
NPN output PNP output
Prewired Horizontal Through-beam 7 m Light-ON
Dark-ON
(selectable)
--- E3S-AT11 E3S-AT31
With timer and
self-diagnostic
functions
E3S-AT21 E3S-AT41
Retroreflective 0.1 to 2 m
(polarized)
--- E3S-AR11 E3S-AR31
With timer and
self-diagnostic
functions
E3S-AR21 E3S-AR41
Diffuse reflec-
tive
10 cm (light
source: infra-
red)
--- E3S-AD13 E3S-AD33
With timer and
self-diagnostic
functions
E3S-AD23 E3S-AD43
20 cm --- E3S-AD11 E3S-AD31
With timer and
self-diagnostic
functions
E3S-AD21 E3S-AD41
70 cm (light
source: infra-
red)
--- E3S-AD12 E3S-AD32
With timer and
self-diagnostic
functions
E3S-AD22 E3S-AD42

A-232 Standard Photoelectric Sensors
Accessories (Order Separately)
E3S-A General-purpose Sensor Accessories
Prewired Vertical Through-beam 7 m Light-ON
Dark-ON
(selectable)
--- E3S-AT61 E3S-AT81
With timer and
self-diagnostic
functions
E3S-AT71 E3S-AT91
Retroreflective 0.1 to 2 m
(polarized)
--- E3S-AR61 E3S-AR81
With timer and
self-diagnostic
functions
E3S-AR71 E3S-AR91
Diffuse reflec-
tive
10 cm (light
source: infra-
red)
--- E3S-AD63 E3S-AD83
With timer and
self-diagnostic
functions
E3S-AD73 E3S-AD93
20 cm --- E3S-AD61 E3S-AD81
With timer and
self-diagnostic
functions
E3S-AD71 E3S-AD91
70 cm (light
source: infra-
red)
--- E3S-AD62 E3S-AD82
With timer and
self-diagnostic
functions
E3S-AD72 E3S-AD92
Connector Horizontal Through-beam 7 m --- E3S-AT16 E3S-AT36
Retroreflective 0.1 to 2 m
(polarized)
E3S-AR16 E3S-AR36
Diffuse reflec-
tive
10 cm (light
source: infra-
red)
E3S-AD18 E3S-AD38
20 cm E3S-AD16 E3S-AD36
70 cm (light
source: infra-
red)
E3S-AD17 E3S-AD37
Vertical Through-beam 7 m --- E3S-AT66 E3S-AT86
Retroreflective 0.1 to 2 m
(polarized)
E3S-AR66 E3S-AR86
Diffuse reflec-
tive
10 cm (light
source: infra-
red)
E3S-AD68 E3S-AD88
20 cm E3S-AD66 E3S-AD86
70 cm (light
source: infra-
red)
E3S-AD67 E3S-AD87
Name Model Remarks
Slit for Through-beam Sensor E39-S46 2 mm, 1 mm, and 0.5 mm slits are sold in pairs, one each
for the receiver and emitter of a through-beam model
Mounting Bracket for Vertical Sensor E39-L59 Purchase two brackets for each through-beam model
E39-L81
Filter for Mutual Interference Prevention
(for Through-beam Sensor)
E39-E6 4 filters are sold together for two through-beam models (2
filters each for the emitters and receivers)
Reflector for Optical Axis Adjustment
(for Through-beam Sensor)
E39-R5 One only
Connections Appearance Sensing
method
Sensing
distance
Operating
modes
Output / timer
functions
Model
NPN output PNP output

A-233E3S-A
E3S-A
Plugs (for Sensors with Connector Terminals)
Reflectors
Specifications
Without self-diagnostic functions
Cord Appearance Cord length Model
Standard Straight (3 conductor) 2 m XS2F-D421-DC0-A
5 m XS2F-D421-GC0-A
L-shape (3 conductor) 2 m XS2F-D422-DC0-A
5 m XS2F-D422-GC0-A
Robot (vibration-proof) Straight (4 conductor) 2 m XS2F-D421-D80-R
5 m XS2F-D421-G80-R
L-shape (43 conductor) 2 m XS2F-D422-D80-R
5 m XS2F-D422-G80-R
Name Model Remarks
Mini-reflector E39-R4 One
Small Reflector E39-R3 One
Reflector Tape E39-RS1, RS2, RS3 One (sealed type)
Sensing method Through-beam, Retrore-
flective (polarized)
Diffuse reflective: 10 cm Diffuse reflective: 20 cm Diffuse reflective: 70 cm
Model NPN output E3S-AT11, -AR11
E3S-AT16, -AR16
E3S-AT61, -AR61
E3S-AT66, -AR66
E3S-AD13
E3S-AD63
E3S-AD18
E3S-AD68
E3S-AD11
E3S-AD16
E3S-AD61
E3S-AD66
E3S-AD12
E3S-AD17
E3S-AD62
E3S-AD67
PNP output E3S-AT31, -AR31
E3S-AT36, -AR36
E3S-AT81, -AR81
E3S-AT86, -AR86
E3S-AD33
E3S-AD83
E3S-AD38
E3S-AD88
E3S-AD31
E3S-AD36
E3S-AD81
E3S-AD86
E3S-AD32
E3S-AD37
E3S-AD82
E3S-AD87
Wavelength of LED light
source
700 nm (red) 880 nm (infrared) 700 nm (red) 880 nm (infrared)
Sensitivity adjustment Two-turn (endless) sensitivity adjustor with indicator
Self-diagnostic functions ---
Timer ---
Turbo function ---
Method of connection Prewired / connector
Weight Prewired type: 60 g; connector type: 11 g
Operation mode Dark-ON or Light-ON (switchable)
Output Open collector current output (NPN or PNP)
Circuit protection Load short-circuit protection, reverse connection protection, mutual interference prevention (except for
through-beam models)
Indicators Light indicator (red) and stability indicator (green); emittion indicator (red) for the emitter of through-beam
models
Materials Case:
Lens:
Mounting bracket:
Polybutylene terephtalate
Denaturated polyallalate
Stainless steel (SUS304)
Attachments Mounting bracket, sensitivity adjustor knob, screws, sensitivity adjustor cover, close-mounting plate (only for
Sensors with connector terminals) and reflector (E39-R1: only for retroreflective Sensors)

A-234 Standard Photoelectric Sensors
With self-diagnostic functions
Sensing method Through-beam, Retrore-
flective (polarized)
Diffuse reflective: 10 cm Diffuse reflective: 20 cm Diffuse reflective: 70 cm
Model NPN output E3S-AT21
E3S-AR21
E3S-AT71
E3S-AR71
E3S-AD23
E3S-AD73
E3S-AD21
E3S-AD71
E3S-AD22
E3S-AD72
PNP output E3S-AT41
E3S-AR41
E3S-AT91
E3S-AR91
E3S-AD43
E3S-AD93
E3S-AD41
E3S-AD91
E3S-AD42
E3S-AD92
Wavelength of LED light
source
700 nm (red) 880 nm (infrared) 700 nm (red) 880 nm (infrared)
Sensitivity adjustment Two-turn (endless) sensitivity adjustor with indicator
Self-diagnostic functions Self-diagnostic output,
External diagnostic input
Self-diagnostic output
Timer 0 to 100 ms OFF-delay varable adjustor
Turbo function Yes (with turbo switch) ---
Method of connection Prewired
Weight 60 g
Operation mode Dark-ON or Light-ON (switchable)
Output Open collector current output (NPN or PNP)
Circuit protection Load short-circuit protection, reverse connection protection, mutual interference prevention (except for
through-beam models) functions
Indicators Light indicator (red) and stability indicator (green); emittion indicator (red) for the emitter of the through-beam
model
Materials Case:
Lens:
Mounting bracket:
Polybutylene terephtalate
Denaturated polyallalate
Stainless steel (SUS304)
Attachments Mounting bracket, sensitivity adjustor knob, screws, sensitivity adjustor cover, close-mounting plate (only for
Sensors with connector terminals) and reflector (E39-R1: only for retroreflective Sensors)

A-235E3S-A
E3S-A
Ratings / Characteristics
Item Through-beam Retroreflective Diffuse reflective
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-AD23, 43,
73, 93
E3S-AD13, 18,
33, 38, 63, 68,
83, 88
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
Power supply voltage 10 to 30 V DC, ripple: 10 % max.
Current consumption 40 mA max. (emitter
and receiver) plus
approx. 15 mA with
turbo function
30 mA max. plus ap-
prox. 15 mA with tur-
bo function
35 mA max. 30 mA max.
plus approx.
15 mA with tur-
bo function
35 mA max.
Rated
sensing
distance
Whitemat
paper
0 to 7 m 0.1 to 2 m 0.1 to 10 cm 0.1 to 20 cm 0 to 70 cm
Black mat
paper
0 to 7 m 0.1 to 2 m 0.3 to 2.5 cm 0.5 to 20 cm 0.15 to 33 cm
Standard sensing ob-
ject (white mat paper)
7 mm min. 30 mm min. 10 x 10 cm 20 x 20 cm
Variation in sensing
distance
--- 30 %/-0 % max.
Hysteresis --- 20 % max. 10 % max. 20 % max.
Sensing distance with
attachment
E39-E6: 2.4 m
2-mm slit: 2.5 m
1-mm slit: 1.1 m
0.5-mm slit: 0.5 m
E39-R3:
10 to 130 cm
E39-R4: 7 to 60 cm
E39-RSA:
10 to 60 cm
E39-RSB:
10 to 30 cm
---
Min. sensing object without slit: 2.0 mm
2-mm slit: 0.8 mm
1-mm slit: 0.4 mm
0.5-mm slit: 0.2 mm
E39-R1 Reflector:
10 mm
E39-R3: 3 mm
E39-R4: 1.0 mm
---
Difference in direction
between optical axis
and mounting direc-
tion
±2° max. (checked along extended line in
the mounting direction)
±2° max.
Response time 0.5 ms max. for both operation and release
Control output 30 VDC, 100 mA max. (residual voltage: 1 V max.) Open collector (residual voltage: 0.4 V max. at 16 mA)
Self-diagnostic output Only Sensors with self-diagnostic function: 50 mA max, 30 VDC (residual voltage: 1 V max.), open collector (re-
sidual voltage: 0.4 V max. 16 mA)
External
diagnos-
tic input
Input
Voltage
With emitter OFF:
NPN: 0 V short-circuit or 1.5 V max. (push
current: 1 mA max.)
PNP: DC short-circuit or –1.5 V DC max.
(pull current: 3 mA max.)
With emitter ON: NPN/PNP
Open (max. input voltage: 30 V max. with
0.1 mA current leakage)
---
Re-
sponse
time
0.5 ms max.
Ambient illumination Incandescent lamp: Illumination on optical spot: 5,000 lx max.
Sunlight: Illumination on optical spot: 10,000 lx max.
Ambient temperature Operating: –25°C to 55°C (with no icing)
Storage: –40°C to 70°C (with no icing)
Ambient humidity Operating: 35% to 85%
Storage: 35% to 95%
Insulation resistance 20 MW min. (at 500 V DC)
Dielectric strength 1,000 V AC, 50/60 Hz for 1 min
Vibration resistance Destruction: 10 to 55 Hz, 1.5-mm double amplitude (30G) 2 hrs each in three directions
Shock resistance Destruction: Approx. 50G 3 times each in three directions
Enclosure ratings IEC: IP67; NEMA: 4X

A-236 Standard Photoelectric Sensors
Engineering Data
Parallel Operating Range
(Typical)
Operating Range (Typical)
E3S-AT@1E3S-AD@(Left and Right) E3S-AD@(Up and Down)
Sensing Distance vs. Object Size Excess Gain vs. Set Distance
E3S-AD@E3S-AT@1 (Typical) E3S-AD@1, -AD@2, -AD@3, -AD@8
(Detection of White Paper)
Reflector Parallel Movement E3S-AR@1 (With Reflector E39-R1) E3S-AD@1, -AD@2, -AD@3, -AD@8
(Detection of White Paper)
E3S-AR@1 (Typical)
Parallel operating range Y (cm)
2 4 6 8
X
Y
Distance X (m)
Operating position Y (cm)
Sensing object
Y
X
Distance
X (cm)
E3S-AD@3/@8
E3S-AD@2
E3S-AD@1
Operating position Y (cm)
E3S-AD@1
E3S-AD@2
Distance
X (cm)
E3S-AD@3/@8
Sensing distance (cm)
E3S-AD@2
E3S-AD@1
E3S-AD@3/@8
OFF
ON
OFF
ON
OFF
ON
Size of object (cm)
Excess gain ratio
Distance (m)
Excess gain ratio
Distance (cm)
Sensing object: white
(E3S-AD@2: 20 x 20 cm
E3S-AD@1: 10 x 10 cm
E3S-AD@3/@8: 10 x 10 cm)
E3S-AD@2
E3S-AD@3/@8
Operating level
E3S-AD@1
Parallel operating range Y (cm)
X
Y
Distance X (m)
Excess gain ratio
Distance (m)
Operating level
Excess gain ratio
Distance (cm)
Sensing object: black
(E3S-AD@2: 20 x 20 cm
E3S-AD@1: 10 x 10 cm
E3S-AD@3/@8: 10 x 10 cm)
Operating level
E3S-AD@1
E3S-AD@3/@8
E3S-AD@2

A-237E3S-A
E3S-A
Operation
Output Circuits
Type Model Mode switch Output transistor Output circuit
NPN E3S-AT11
E3S-AT16
E3S-AT61
E3S-AT66
E3S-AR11
E3S-AR16
E3S-AR61
E3S-AR66
E3S-AD13
E3S-AD63
E3S-AD18
E3S-AD68
E3S-AD11
E3S-AD16
E3S-AD61
E3S-AD66
E3S AD12
E3S-AD17
E3S-AD62
E3S AD67
Light ON ON when light is re-
ceived
Dark ON ON when light is
not received
E3S-AT21
E3S-AT71
E3S-AD23
E3S-AD73
E3S-AD21
E3S-AD71
E3S-AD22
E3S-AD72
Light ON ON when light is re-
ceived
Dark ON ON when light is
not received
E3S-AR21
E3S-AR71
Light ON ON when light is re-
ceived
Dark ON ON when light is
not received
Emitter
E3S-AT11/AT16/
AT61/AT66 10 to
30 VDC
Brown
Blue
Main
circuit
Emission
(Red)
Load
10 to
30 VDC
ZD
Light Stability
(Red)
(Green) Main
circuit
Brown
Black
Blue
100 mA
max.
Z
D : V Z = 39 V
(relay)
Connector Type
Emitter Reflective/Receiver
Pin No. 2 is open.
Load
+ V
0 V
+ V
0 V
Output(Relay)
Emitter E3S-AT21/AT71
10 to 30 VDC
0 V
Emission (Red)
Main
circuit
Brown
Pink
Blue
External-diagnostic
input
Indicator (red) ON
OFF
External
diagnostic input ON
OFF
LED for emitter ON
OFF
Z D
ZD
10 to
30 VDC
Light Stability
(Red)
(Green)
Main
circuit
100 mA max.
50 mA max.
Brown
Black
Blue
Load
(relay)
ZD: VZ= 39 V
Self-diagnostic
output
Load
(relay)
Control
output
Orange
(Red) (Green)
Light
Black
Pink
Orange 10 to 30 VDC
100 mA max.
50 mA max.
12 K
Stability
Blue
Brown
Load
(relay)
Control
output
Self-diagnostic
output External-diag
nostic input
Main
circuit ZD
ZD
Load
(relay)
ZD: VZ= 39 V

A-238 Standard Photoelectric Sensors
PNP E3S-AT31
E3S-AT36
E3S-AT81
E3S-AT86
E3S-AR31
E3S-AR36
E3S-AR81
E3S-AR86
E3S-AD33
E3S-AD83
E3S-AD38
E3S-AD88
E3S-AD31
E3S-AD36
E3S-AD81
E3S-AD86
E3S AD32
E3S-AD37
E3S-AD82
E3S AD87
Light ON ON when light is re-
ceived
Dark ON ON when light is
not received
E3S-AT41
E3S-AT91
E3S-AD43
E3S-AD93
E3S-AD41
E3S-AD91
E3S-AD42
E3S-AD92
Light ON ON when light is re-
ceived
Dark ON ON when light is
not received
E3S-AR41
E3S-AR91
Light ON ON when light is re-
ceived
Dark ON ON when light is
not received
Type Model Mode switch Output transistor Output circuit
Emitter
E3S-AT31/AT36/
AT81/AT86
Main
circuit
Brown
Blue
10 to
30 VDC
Emission (Red)
Light Stability
(Red) Main
circuit
ZD
Brown
Blue
Black
Control
output
100 mA
max. Load
10 to
30 VDC
ZD: VZ= 39 V
(Green)
(relay)
Connector Type
Emitter Reflective/Receiver
Pin No. 2 is open.
+ V
0 V
+ V
0 V
Output
Load (relay)
Emitter E3S-AT41/AT91
Indicator (red) ON
OFF
External
diagnostic input ON
OFF
LED for emitter ON
OFF
Pink
Blue
Brown
Emission (Red)
Main
circuit
10 to 30 VDC
External-diagnostic
input
0 V
Light Stability
(Green)
(Red) Main
circuit Z
D
Z D
50 mA max.
100 mA max. Black
Orange
Blue
Brown
Load
(relay)
Control
output
Self-diagnostic
output
10 to 30 VDC
Load
(relay)
Z
D : V Z = 39 V
Black
Pink
Orange
Blue
Brown
50 mA
max.
100 mA max.
Z
D
ZD
Load
(relay)
Control
output
10 to 30 VDC
4.4K
Main
circuit
(Green)
(Red)
Light Stability
Load
(relay)
ZD: VZ= 39 V
External-diag-
nostic input
Self-diagnos-
tic output

A-239E3S-A
E3S-A
Timing Charts
Type Model Mode switch Output transistor Timing chart
NPN E3S-AT11
E3S-AT16
E3S-AT61
E3S-AT66
E3S-AR11
E3S-AR16
E3S-AR61
E3S-AR66
E3S-AD13
E3S-AD63
E3S-AD18
E3S-AD68
E3S-AD11
E3S-AD16
E3S-AD61
E3S-AD66
E3S-AD12
E3S-AD17
E3S-AD62
E3S-AD67
Light ON ON when light is re-
ceived.
Dark ON ON when light is
not received.
E3S-AT21
E3S-AT71
E3S-AD23
E3S-AD73
E3S-AD21
E3S-AD71
E3S-AD22
E3S-AD72
E3S-AR21
E3S-AR71
Light ON ON when light is re-
ceived.
Dark ON ON when light is
not received.
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
(Between brown and black)
Light received
Light not received
(Between brown and black)
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
Light received
Light not received
T
(Between brown and black)
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
Light received
Light not received
T: Off-delay timer
(0 to 100 ms)
T
(Between brown and black)
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
Light received
Light not received
T: Off-delay timer
(0 to 100 ms)
T: Off-delay timer
(0 to 100 ms)

A-240 Standard Photoelectric Sensors
PNP E3S-AT31
E3S-AT36
E3S-AT81
E3S-AT86
E3S-AR31
E3S-AR36
E3S-AR81
E3S-AR86
E3S-AD33
E3S-AD83
E3S-AD38
E3S-AD88
E3S-AD31
E3S-AD36
E3S-AD81
E3S-AD86
E3S-AD32
E3S-AD37
E3S-AD82
E3S-AD87
Light ON ON when light is re-
ceived.
Dark ON ON when light is
not received.
E3S-AT41
E3S-AT91
E3S-AD43
E3S-AD93
E3S-AD41
E3S-AD91
E3S-AD42
E3S-AD92
E3S-AR41
E3S-AR91
Light ON ON when light is re-
ceived.
Dark ON ON when light is
not received.
Type Model Mode switch Output transistor Timing chart
(Between blue and black)
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
Light received
Light not received
(Between blue and black)
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
Light received
Light not received
T
(Between blue and black)
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
Light received
Light not received
T: Off-delay timer
(0 to 100 ms)
T
(Between blue and black)
Light indicator
(Red)
ON
OFF
Output
transistor
Load
(relay) Operate Release
ON
OFF
Light received
Light not received
T: Off-delay timer
(0 to 100 ms)

A-241E3S-A
E3S-A
Self-diagnostic Function
With this function, the E3S-A checks changes in environmental conditions (especially a change in the ambient temperature) and
self-diagnoses the resistance against the changes. The result is shown by the indicators or an output signal.
External Diagnostic Input Function
To switch the emission off, short-circuit the pink and the blue cords of the emitter of
the E3S-AT or the E3S-AR with the NPN output feature. For the E3S-AT or the E3S-
AR with the PNP output feature, short-circuit the pink and the brown cords. With this
function, the operating status can be checked before operation.
Amount of
incident light
Green indicator Indicator Incident light
indicator (red)
Self-diagnostic
function
Self-diagnostic example
1.2 or more Stable operating
state with inci-
dent light: Stable
operation is ex-
pected in the rat-
ed temperature
range with the
green indicator
ON.
With light inci-
dent (red indica-
tor: ON)
--- ---
1.0 to 1.2 Conditional oper-
ating state with
incident light:
Stable operation
is expected if the
temperature fluc-
tuation is within
±10% of the pri-
mary tempera-
ture.
The self-diag-
nostic alarm
output alerts
the user to this
state if it contin-
ues for 0.3 s.
0.8 to 1.0 Without light inci-
dent (red indica-
tor: OFF)
0.8 or less Stable operating
state with no inci-
dent light: Stable
operation is ex-
pected in the rat-
ed temperature
range with the
green indicator
ON.
--- ---
Green Red
Green Red
The optical axis misaligned by vibration.
Light decreased by dust.
Dust
Green Red
With the influence
of external noise
Sensing object
Noise
Sensing
object
With light leakage (through-beam
and retroreflective Sensors)
Light reflected from the floor or the back-
ground (diffuse reflective Sensors)
Green Red
With emission
Brown + V
Brown + V
Blue 0 V
Blue 0 V
OFF
(with PNP output)
OFF
(with NPN output)
Pink (External-
diagnostic input)
ON
(with PNP output)
ON
(with NPN output)
Pink (External-
diagnostic input)
E3S-AT@/E3S-AR@
emitter
E3S-AT@/E3S-AR@
emitter
Without emission

A-242 Standard Photoelectric Sensors
The sensor is normal if the control output var-
ies when the self-diagnostic external input is
ON and OFF. The sensor is abnormal if the
control output does not vary when the self-di-
agnostic external input is turned ON or OFF.
Note:Before using the self-diagnostic external input func-
tion, the incident light beam to the sensor must not be
blocked by an object.
Timer and Turbo Switch (Sensors with Self-diagnostic Output Function)
The E3S-A Sensor equipped with the self-diagnostic feature
incorporates an OFF-delay timer that can be adjusted within a
range of 0 to 100 ms.
The emitter of the through-beam sensor with the self-diagnos-
tic 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. The OFF-delay time adjustor of the ret-
roreflective and the 20-cm diffuse reflective sensor is used as
a turbo switch. When the adjustor is pressed, it functions as a
turbo switch to automatically increase the power of the light
source to create a brighter light spot. Do not press the adjustor
when turning it
Sensitivity Adjustment (Reflective Sensors)
Unlike conventional photoelectric sensors, the variation in the
sensitivity of E3S photoelectric sensors is minimal. This
means the sensitivity can be adjusted on only a single photo-
electric sensor, and then the adjustors on the other photoelec-
tric sensors can be set to the same scale position. There is no
need to adjust the sensitivity of each photoelectric sensor in-
dividually.
Indicator ON
OFF
External
diagnostic input ON
OFF
LED for emitter ON
OFF
E3S-AT@/E3S-AR@Emitter
Indicator
Main
circuit
Brown
Blue
Pink
10 to 30
VDC
(with PNP output)
(with NPN output)
External-diagnostic
input
0 V
Item Position A Position B Setting
Sensing
condition
---
Sensivity
adjustor
Indicators
Procedure Locate a sensing object at the sensing
distance, set the sensitivity adjustor to
the minimum scale position, and grad-
ually increase sensitivity by turning the
sensitivity adjustor clockwise until the
incident light indicator (red LED) is ON.
Position A is where the indicator has
turned ON. Regard the maximum scale
position as Position A if the indicator
does not turned ON at full sensitivity.
Remove the sensing object and gradu-
ally decrease sensitivity by turning the
sensitivity adjustor counterclockwise
from the maximum scale position until
the incident light indicator (red LED) is
OFF. Position B is where the indicator
has turned off. Regard the minimum
scale position as Position B if the indi-
cator does not turned ON at minimum
sensitivity.
Set the sensitivity indicator to the posi-
tion between Positions A and B (in
some cases, Positions A and B are op-
posite of the above example). The pho-
toelectric sensor will then work
normally if the stability indicator (green)
is lit with and without the sensing ob-
ject. If it is not lit, stable operation can-
not be expected, in which case a
different detection method must be ap-
plied.
Photoelectric sensor
Sensing object Sensing object
Photoelectric sensor
A
Min Max Min Max
BB
Min Max
A
OFF ON
STABILITY
(green) LIGHT (red)
OFF OFF
STABILITY
(green) LIGHT (red)
OFF ON
STABILITY
(green) LIGHT (red)

A-243E3S-A
E3S-A
Turbo Function (Turbo Switch)
With the turbo function switched ON,
the light spot is visible even at a dis-
tance of 20 cm, making it easy to
check the sensing position and the
angle of the optical axis.
1. After using the turbo function, read-
just the OFF-delay time that had
been set, since the OFF-delay time
could have been changed when
the turbo switch (which is on the
OFF-delay time adjustor) was
pressed.
2. Press the OFF-delay time adjustor
to switch ON the turbo function with
a maximum force of 1 kg and within
a maximum period of 3 mins. (The
photoelectric sensor, however, will
not malfunction even if the turbo
function is switched on for more
than 3 mins.)
Operating Mode Selection
As shown in the following illustration, the E3S-A has an oper-
ating mode selector on the panel where the Receiver connec-
tor is located. With this operating mode selector, the E3S-A is
in either dark-ON or light-ON mode.
Normal Operating Condition
Adjustor cap
Sensitivity adjustor
PUSH
With Turbo Switch ON
The turbo function is effective with the turbo
switch pressed, and the function is reset
automatically when released.
The OFF-delay time adjustor is
used as a turbo switch (black)
Operating mode selector (black)
Dark-ON Light-ON

A-244 Standard Photoelectric Sensors
Dimensions
Sensors
Prewired Type
E3S-AT11, E3S-AT31
(Receiver)
Mounting Holes
E3S-AT11, E3S-AT31
(Emitter)
Sensitivity adjustor (white)
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 4 cores,
Standard length: 2 m
Light indicator (red)
Stability indicator
(green) Two mounting holes
Lens (7 x 7) Optical axis
Two, M3 x 12 screws
12.4 12
12.9 7
(4)
16.5
16.9 10.7
3.2
4.8
5
10.5 20
30
7.2
3.2 7.2
21
8
1.2
5.5
10.7
16.2
29.2
1.3
A (see note)
40
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
Mounting Holes
20
Two, M3 holes
Mounting Holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
20
Two, M3 holes
12.4 12
10.7
40
17.8
3.2
4.8
5
20
30
7.2
3.2 7.2
(4)
1.3
29.2
16.2
5.5
10.7
1.2
8
21
Light indicator (red)
Two mounting holes
Two, M3 x 12 screws
Lens (7 x 7) Optical axis
Polyvinyl chloride-covered cord ,
4-mm dia. (0.12-mm x 18), 2 cores,
Standard length:2 m
16.5
16.9
10.5
A (see note)
Note: The mounting bracket can be attached to side A.
Note: The mounting bracket can be attached to side A.

A-245E3S-A
E3S-A
E3S-AT21, E3S-AT41
(Receiver) Light indicator (red)
Sensitivity adjustor (white)
Time adjustor (black)
2-m polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 4 cores,
Standard length: 2 m
Stability indicator
(green) Two mounting holes
Lens (7 x 7) Optical axis
Two, M3 x 12
screws
12.4 12
12.9 7
405.5
(4)
16.5
16.9 10.7
3.2
4.8
5
10.5 20
30
7.2
3.2 7.2
21
8
1.2 10.7
5.5
16.2
29.2
1.3
A (see note)
Mounting Holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
20
Two, M3 holes
E3S-AT21, E3S-AT41
(Emitter)
Lens (7 x 7) Optical axis
Light indicator (red)
Two, M3 x 12
screws
Turbo Switch
12.4
16.5
12
16.5
10.7
10.5
5
4.8
3.2
12.9
40 (4)
3.2 7.2
7.2
20
30
1.3
29.2
16.2
5.5
10.7
1.2
8
27
Two mounting holes
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 2 cores,
Standard length:2 m
12.5
A (see note)
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
20
Two, M3 holes
Mounting Holes
Note: The mounting bracket can be attached to side A.
Note: The mounting bracket can be attached to side A.

A-246 Standard Photoelectric Sensors
E3S-AR11, E3S-AR31
E3S-AR21, E3S-AR41
21
11.5
1.2
10.7
19.7
29.2
1.3
20
30
10.5
5
3.2
4.8
3.2 7.2
(9)
(4) (see note 2)
42.3
5.5
7
15.2
2.3
12.4
16.5
12
16.9
10.7
Receiver
Emitter
OFF-delay time adjustor/turbo switch (black) (see
Note 1)
Turn to adjust the OFF-delay time: push to switch
turbo function ON
Note: 1. For E3S-AR21 and
E3S-AR41 only.
2. 9 mm for E3S-AR21
and E3S-AR41
Lens (7 x 14)
Optical axis
Light indicator (red)
Sensitivity adjustor (white)
Polyvinyl chloride-covered cord, 4-mm dia.
(0.12-mm x 18), 5 cores
(E3S-AR21, -41), 3 cores (E3S-AR11, 31),
Standard length: 2 m
Stability
indicator
(green)
Two mounting holes
Two, M3 x 12 screws
9
A (see note)
7.2
Mounting Holes
12.4 12
16.5
16.9 10.7
12.9 7
40 (4)
3.2 7.2
7.2
20
30
3.2
4.8
5
10.5
11.5
1.2 10.7
9
19.7
29.2
1.3
Light indicator (red) Sensitivity adjustor
(white)
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 3 cores,
Standard length: 2 m
Stability
indicator
(green) Two mounting holes
Lens (7 x 14) Receiver
Optical axis
Emitter
Two, M3 x 12
screws
21
A (see note)
Mounting Holes
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
Note: The mounting bracket can be attached to side A.
Note: The mounting bracket can be attached to side A.
E3S-AD11, E3S-AD31
E3S-AD13, E3S-AD31
E3S-AD12, E3S-AD32

A-247E3S-A
E3S-A
E3S-AD21, E3S-AD41
E3S-AD23, E3S-AD43
E3S-AD22, E3S-AD42
E3S-AT61, E3S-AT81
(Receiver)
11.5
1.2 10.7
9
19.7
29.2
12.4
16.5
12
16.9 10.7
12.9 7
405.5
(4)
3.2 7.2
30
20
5
1.3
3.2
4.8
Light indicator (red)
Sensitivity adjustor (white) OFF-delay time adjustor/turbo
switch (black) (see Note)
Turn to adjust the OFF-delay time:
push to switch turbo function
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 4 cores,
Standard length: 2 m
Stability
indicator
(green)
Two mounting holes
Lens (7 x 14) Receiver
Optical axis
Emitter
Two, M3 x 12 screws
21
Note: Turbo switch is only for
E3S-AD21 and E3S-AD41.
A (see note)
10.5
7.2
Mounting Holes
Use these two holes
for mounting.
Lens (7 x 7) Optical axis
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 4 cores,
Standard length: 2 m
Four mounting holes
Stability indicator
(green) Light indicator (red)
Sensitivity adjustor (white)
Two, M3 x 12
screws
12.4 12
16.5
16.9
10.7
7.2
13.5 8.3
40 (4)
3.1
3.6
41.7
7.2
20
21
3.6
1.2 10.7
29.2
1.3
10.5 20+0.2
7
A (see note)
Mounting Holes
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
Note: The mounting bracket can be attached to side A.
Note: The mounting bracket can be attached to side A.

A-248 Standard Photoelectric Sensors
E3S-AT61, E3S-AT81
(Emitter)
Mounting Holes
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
12.4 12
16.5
16.9
7.2
10.7
40
8.5
29.2
8.3
3.1
3.6
1.2
1.3
13.5
41.7
7.2
20
21
10.7
10.5 20+0.2
Lens (7 x 7) Optical axis
Two, M3 x 12
screws
Four mounting holes
Light indicator (red)
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 4 cores,
Standard length: 2 m
Use these two holes
for mounting.
(4)
A (see note)
E3S-AT71, E3S-AT91
(Receiver)
21
3.6
7
5.5
10.7
29.2
1.3
10.5 20+0.2
12.4 12
16.5
16.9 10.7
7.2
13.5 8.3
40 (4)
20
41.7
Lens (7 x 7) Optical axis
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 4 cores,
Standard length: 2 m
Use these
two holes for
mounting.
Four mount
ing holes
Stability
indicator
(green) Light indicator (red)
Sensitivity adjustor (white)
Time adjustor (black)
Two, M3 x 12 screws
3.1
3.6 7.2
A (see note) 1.2
Mounting Holes
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
Note: The mounting bracket can be attached to side A.
Note: The mounting bracket can be attached to side A.

A-249E3S-A
E3S-A
E3S-AT71, E3S-AT91
(Emitter)
E3S-AR61, E3S-AR81
E3S-AR71, E3S-AR91
Mounting Holes
23.3
5.9
7
5.5
12
10.7
31.5
10.5 20+0.8
4.7
3.1
3.6
20
(4) (see note 2)
40
13.5
12.4
16.5
12
16.9
10.7
7.2
(9)
Receiver
Lens (7 x 14)
Optical axis
Emitter
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 5 cores
(E3S-AR71/-AR91), 3 cores
(E3S-AR61/-AR81),
Standard length: 2 m
Use these two
holes for mounting.
Four
mounting
holes
Light indicator (red)
Stability indicator (green) Sensitivity adjustor (white)
OFF-delay time adjus
tor/turbo switch (black)
(see note 1)
Turn to adjust the OFF-
delay time: push to
switch turbo function
Two, M3 x 12
screws
8.3
1.3
A (see note 3)
7.2
Mounting Holes
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
12.4 12
16.5
16.9
7.2
10.7
40
8.3
3.1
3.6
13.5
41.7
7.2
20
Lens (7 x 7) Optical axis
Four mounting
holes
Polyvinyl chloride-covered cord ,
4-mm dia. (0.12-mm x 18), 2 cores,
Standard length: 2 m
Use these two holes
for mounting.
(4)
12.5
3.6
21
29.2
10.7
10.5
1.3
1.2
Two, M3 x 12 screws
20+0.2
Light indicator (red)
Turbo switch
A (see note)
Note: 1. Turbo switch is only for E3S-AR71 and E3S-AR91.
2. 9.7 mm for E3S-AR71/-AR91.
3. The mounting bracket can be attached to side A.
Note: The mounting bracket can be attached to side A.
A (see note)

A-250 Standard Photoelectric Sensors
E3S-AD61, E3S-AD81
E3S-AD63, E3S-AD83
E3S-AD62, E3S-AD82
E3S-AD71, E3S-AD91
E3S-AD73, E3S-AD93
E3S-AD72, E3S-AD92
1.3
12.4
16.5
12
16.9 10.7
7.2
17
40
4.8
(4)
41.7
20
3.1
3.6
10.5 20+0.2
29.2
10.7
1.2
21
3.6
7
Receiver
Lens (7 x 14)
Optical axis
Emitter
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 3 cores,
Standard length: 2 m
Use these two holes
for mounting.
Four
mounting
holes
Stability indicator
(green)
Light indicator (red)
Sensitivity adjustor (white)
Two, M3 x 12 screws
7.2
A (see note)
Mounting Holes
21
3.6
7
3.5
12
10.7
29.2
10.5 20+0.2
12.4
14.5
12
16.9
10.7
7.2
41.7
20
17 4.8
40 (4)
Receiver
Lens (7 x 14)
Optical axis
Emitter
Polyvinyl chloride-covered cord,
4-mm dia. (0.12-mm x 18), 4 cores,
Standard length: 2 m
Use these two
holes for
mounting.
Four
mounting
holes
Stability
indicator
(green) Light indicator (red)
Sensitivity adjustor (white)
OFF-delay time adjustor/turbo
switch (black) (see note 1)
Turn to adjust the OFF-delay
time: push to switch turbo
function
Two, M3 x 12 screws
3.1
3.6 7.2
1.3
A (see note)
Mounting Holes
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
20
Two, M3 holes
Mode Selector (black)
Dark-ON Light-ON
DL
A (see note)
Note: 1. Turbo switch is only for E3S-AD71 and E3S-AD91.
2. The mounting bracket can be attached to side A.
Note: The mounting bracket can be attached to side A.