Method of detection

Through-beam

Retroreflective

Diffuse reflective

Sensing distance

7 m (22.97 ft)

2 m (6.56 ft)

10 cm (3.94 in) 20 cm (7.87 in) 70 cm (2.3 ft)

Mounting

Output

Extra features

Connection

Part number

Horizontal NPN

None

Prewired

E3S-AT11

E3S-AR11

E3S-AD13

E3S-AD11

E3S-AD12

None

Connector

E3S-AT16

E3S-AR16

E3S-AD18

E3S-AD16

E3S-AD17

Timer,

Prewired

E3S-AT21

E3S-AR21

E3S-AD23*

E3S-AD21

E3S-AD22*

alarm and turbo

PNP

None

Prewired

E3S-AT31

E3S-AR31

E3S-AD33

E3S-AD31

E3S-AD32

None

Connector

E3S-AT36

E3S-AR36

E3S-AD38

E3S-AD36

E3S-AD37

Timer,

Prewired

E3S-AT41

E3S-AR41

E3S-AD43*

E3S-AD41

E3S-AD42*

alarm and turbo

Vertical

NPN

None

Prewired

E3S-AT61

E3S-AR61

E3S-AD63

E3S-AD61

E3S-AD62

None

Connector

E3S-AT66

E3S-AR66

E3S-AD68

E3S-AD66

E3S-AD67

Timer,

Prewired

E3S-AT71

E3S-AR71

E3S-AD73*

E3S-AD71

E3S-AD72*

alarm and turbo

PNP

None

Prewired

E3S-AT81

E3S-AR81

E3S-AD83

E3S-AD81

E3S-AD82

None

Connector

E3S-AT86

E3S-AR86

E3S-AD88

E3S-AD86

E3S-AD87

Timer,

Prewired

E3S-AT91

E3S-AR91

E3S-AD93*

E3S-AD91

E3S-AD92*

alarm and turbo

*10 and 70 cm diffuse versions do not have turbo function

Sensing

Supply voltage

Output

10 to 30 VDC

7 m

2 m

20 cm, 70 cm

100 mA

Wide Selection of High Performance Small DC
Sensors Offers Longer Sensing Distances

Fast 0.5 msec response time for
high-speed sensing

Extended sensing distances up to 7 meters

Self-diagnostic functions available

User-friendly features for easy installation
and use

Meets: NEMA 4X, 6 and IP67

Many mounting configurations available

Choose prewired or connector-ready models

E3S-AD Series includes 10 cm short range
diffuse version

General-Purpose Photoelectric Sensor

E3S-A

SENSORS

Ordering Information

Through-beam sensors include both emitter and receiver. The polarized retroreflective sensors include E39-R1 reflector. All sensors
include mounting hardware. Optional mounting brackets are available as accessories.

E3S-A

Part number

E3S-AT

E3S-AR

E3S-AD

Method of detection

Through-beam

Polarized

Diffuse reflective

retroreflective

Supply voltage

10 to 30 VDC,

�

10%

Current consumption

40 mA max.

30 mA max.

35 mA max.

30 mA max.

35 mA max.

(emitter and

45 mA with turbo

receiver)
55 mA with turbo

Sensing

White

0 to 7 m

0.1 to 2 m with E39-R1

0 to 10 cm

0.1 to 20 cm

0 to 70 cm

distance

mat paper

(0 to 22.97 ft)

(0.33 to 6.56 ft)

(0 to 3.94 in)

(0.04 to 7.87 in)

(0 to 27.56 in)

Black

0.3 to 2.5 cm

0.5 to 2.3 cm

0.15 to 33 cm

mat paper

(0.12 to 0.98 in)

(0.20 to 0.91 in)

(0.06 to 12.99 in)

With

2.4 m (7.87 ft)

10 to 130 cm with E39-R3

accessories

with E39-E6

(3.94 to 51.18 in)

2.5 m (8.20 ft)

7 to 60 cm with E39-R4

with 2 mm slit

(2.76 to 23.62 in)

1.1 m (3.61 ft)

10 to 30 cm with E39-RSA

with 1 mm slit

(3.94 to 11.81 in)

0.5 m (1.64 ft)

10 to 60 cm with E39-RSB

with 0.5 mm slit

(3.94 to 23.62 in)

Light source

Pulse modulated red LED (700 nm)

Pulse modulated

infrared LED

red LED

infrared LED

(880 nm)

(700 nm)

(880 nm)

Standard

Type

Opaque materials

Opaque and transparent materials

object

Size

7 mm (0.28 in)

30 mm (1.18 in)

10 x 10 cm (3.94 x 3.94 in)

20 x 20 cm

minimum

white mat paper

(7.87 x 7.87 in)
white mat paper

Operation mode

Light-ON/Dark-ON operation, switch selectable

Variation in

+30% max., �0% max.

sensing distance

Hysteresis

10% max.

20% max.

Variation in optical axis

�

max.

and mounting direction

ACCESSORIES

Description

Part number

Mounting bracket for vertical sensors (2 required for through-beam type)

E39-L59

Slits for E3S-AT

sensors (3 pairs: 2 mm, 1 mm and 0.5 mm wide, includes mounting hardware)

E39-S46

Mutual interference filters for E3S-AT

sensors (2 pairs: horizontal and vertical, includes mounting hardware)

E39-E6

Optical alignment reflector for E3S-AT

E39-R5

2 m (6.56 ft) cable

Y96E-43SD2

5 m (16.40 ft) cable

Y96E-43SD5

10 m (32.81 ft) cable

Y96E-43SD10

2 m (6.56 ft) cable

Y96E-43RD2

5 m (16.40 ft) cable

Y96E-43RD5

10 m (32.81 ft) cable

Y96E-43RD10

Small corner cube reflector

10 to 130 cm (3.94 to 51.18 in)

E39-R3

7 to 60 cm (2.76 to 23.62 in)

E39-R4

Adhesive back reflector

10 to 30 cm (3.94 to 11.81 in)

E39-RSA

10 to 60 cm (3.94 to 23.62 in)

E39-RSB

Mounting bracket for E39-R1 reflector

E39-L7

Straight connector cordsets
(4-pole female connector)

Right-angle connector cordsets
(4-pole female connector)

REPLACEMENT PARTS

Description

Part number

Knob for sensitivity adjuster

E39-G2

Mounting bracket spacer for connector versions

E39-L60

Corner cube reflector (supplied with E3S-AR

)

E39-R1

Mounting bracket for horizontal sensors (supplied with each sensor)

E39-L69

Mounting bracket for vertical sensors (supplied with each sensor)

E39-L70

Specifications

E3S-A

Part number

E3S-AT

E3S-AR

E3S-AD

Sensitivity

Adjustable, 2-turn knob with clutch and indicator

Mutual interference

Not provided

Provided

protection

Control

Type

NPN transistor, open collector (E3S-A

, E3S-A

output

(E3S-AD1

, E3S-AD2

, E3S-AD6

, E3S-AD7

)

PNP transistor, open collector (E3S-A

, E3S-A

(E3S-AD3

, E3S-AD4

, E3S-AD8

, E3S-AD9

)

Max. load

100 mA max. at 30 VDC

Max.

1 VDC max. at 100 mA load current

ON-state
voltage drop

Self-diagnostics

50 mA max. load at 30 VDC, NPN or PNP transistor open collector to match control output

alarm output

Response time

0.5 ms max. ON, 0.5 ms max. OFF

OFF-delay timer

0 to 100 ms with 3/4 turn adjuster

Check

NPN

Light OFF: gray wire connected to 0 to 1.5 VDC --

input

PNP

Light OFF: gray wire connected to supply

voltage (30 VDC max.)

Response

0.5 ms max.

time

Circuit protection

Load short-circuit protection, reverse polarity protection

Indicators

Emitter:

Operation (red), Stability (green)

Operation (red)
Receiver:
Operation (red)
Stability (green)

Materials

Lens

Denatured polyarylate

Case

Polybutylene terephthalate (PBT)

Bracket

Stainless steel

Mounting

Either side surface with two threaded holes. Bracket E39-L69 for horizontal or E39-L70 for
vertical sensors and hardware included.

Connections Prewired

2 m (6.56 ft) long cable

Connector

M12 threaded connector, 4 pin

Weight

Prewired

Emitter:

60 g (2.1 oz.)

60 g (2.1 oz.)
Receiver:
60 g (2.1 oz.)

Connector

Emitter:

11 g (0.4 oz.)

11 g (0.4 oz.)
Receiver:
11 g (0.4 oz.)

Enclosure

IEC 144

IP67

rating

NEMA

4X, 6

Operating

-25

�

to 55

�

C (-13

�

to 131

�

F) with no ice build-up

Storage

-40

�

to 70

�

C (-40

�

to 158

�

OUTPUT CIRCUIT DIAGRAMS

NPN Cable Type

Through-beam emitter E3S-AT11, E3S-AT61

Through-beam receiver E3S-AT11, E3S-AT61
Retroreflective E3S-AR11, E3S-AR61
Diffuse reflective E3S-AD11, E3S-AD12, E3S-AD13, E3S-AD61,
E3S-AD62, E3S-AD63

Light

(Red)

Stability
(Green)

Main
circuit

Black (Blue)

100 mA
max.

White (Black) (relay)

Load

10 to 30
VDC

Red (Brown)

Main
circuit

Black (Blue)

10 to 30
VDC

Red (Brown)

SPECIFICATIONS (continued)

Ambient
temperature

NOTE: IEC colors are shown in parentheses.

E3S-A

NPN Cable Type with Self-Diagnostic Functions

Through-beam emitter E3S-AT21, E3S-AT71

Through-beam receiver E3S-AT21, E3S-AT71
Diffuse reflective E3S-AD21, E3S-AD22, E3S-AD71, E3S-AD72

10 to 30 VDC

Main
circuit

Grey (Pink)

Black (Blue)

0 V

Check
input

Red (Brown)

Light

(Red)

Stability
(Green)

Main
circuit

100 mA max.

50 mA max.

Load
(relay)

Black (Blue)

Self-diagnostic
output

(Orange)

White (Black)

Load
(relay)

10 to 30
VDC

Control
output

Red (Brown)

NPN Cable Type with Self-Diagnostic Functions

Retroreflective E3S-AR21, E3S-AR71

NPN Cable Type with Alarm Output

Diffuse reflective E3S-AD23, E3S-AD73

Main
circuit

Red (Brown)

Black (Blue)

10 to 30
VDC

Light

(Red)

Stability
(Green)

Main
circuit

Red (Brown)

White (Black)

Control output

10 to 30
VDC

100 mA
max.

Load

Black (Blue) (relay)

Light

(Red)

Stability
(Green)

Main
circuit

100 mA max.

50 mA max.

Black (Blue)

(Orange)

White (Black)

10 to 30
VDC

Control
output

Red (Brown)

Alarm output

Load
(relay)

10 to 30
VDC

Orange

Check input

Black (Blue)

Self-diagnostic
output

50 mA
max.

12K

Light

(Red)

Stability
(Green)

Main
circuit

Red (Brown)

Load
(relay)

Control
output

White (Black)

Gray
(Pink)

100 mA max.

NOTE: IEC colors are shown in parentheses.

PNP Cable Type

Through-beam emitter E3S-AT31, E3S-AT81

Through-beam receiver E3S-AT31, E3S-AT81
Retroreflective E3S-AR31, E3S-AR81
Diffuse reflective E3S-AD31, E3S-AD32, E3S-AD33,
E3S-AD81, E3S-AD82, E3S-AD83

NPN Connector Type

Through-beam emitter
E3S-AT16, E3S-AT66

Through-beam receiver
E3S-AT16, E3S-AT66
Retroreflective E3S-AR16, E3S-AR66
Diffuse reflective E3S-AD16,
E3S-AD17, E3S-AD18, E3S-AD66,
E3S-AD67, E3S-AD68

Load

Output

(relay)

E3S-A

PNP Cable Type with Self-Diagnostic Functions

Through-beam emitter E3S-AT41, E3S-AT91

Through-beam receiver E3S-AT41, E3S-AT91
Diffuse reflective E3S-AD41, E3S-AD42, E3S-AD91, E3S-AD92

Main
circuit

100 mA max.

Red (Brown)

Self-diagnostic
output

Load
(relay)

Black (Blue)

50 mA max. Orange

Load
(relay)

White (Black)

Control
output

Stability
(Green)

Light

(Red)

10 to 30
VDC

Main
circuit

10 to 30 VDC

Check input

Black (Blue)

Gray (Pink)

0 V

Red (Brown)

PNP Cable Type with Alarm Output

Diffuse reflective E3S-AD43, E3S-AD93

Retroreflective E3S-AR41, E3S-AR91

Main
circuit

100 mA max.

Red (Brown)

Alarm
output

Load
(relay)

Black (Blue)

Orange (White)

Load
(relay)

White (Black)

Control
output

Light

(Red)

10 to 30
VDC

Main
circuit

100 mA max.

50 mA
max.

4.4K

Red (Brown)

Orange

Control output

Load
(relay)

Black (Blue)

Check
input

Self-
diagnostic
output

Gray (Pink)

White (Black)

Light

(Red)

Stability
(Green)

10 to 30
VDC

50 mA

max.

Stability
(Green)

PNP Connector Type

Through-beam emitter
E3S-AT36, E3S-AT86

Through-beam receiver
E3S-AT36, E3S-AT86
Retroreflective E3S-AR36, E3S-AR86
Diffuse reflective E3S-AD36,
E3S-AD37, E3S-AD38, E3S-AD86,
E3S-AD87, E3S-AD88,

(relay)

Output

Load

NOTE: IEC colors are shown in parentheses.

E3S-A

Engineering Data

EXCESS GAIN RATIO

Excess Gain vs. Set Distance

(Typical) E3S-AT

E3S-AD

1, -AD

2 (Detection of

White Paper)

E3S-AD

1, -AD

2 (Detection of

Black Paper)

Excess gain ratio

Distance (m)

Excess gain ratio

Distance (cm)

100

120

Excess gain ratio

Distance (cm)

Sensing object: black
(E3S-AD

2: 20 x 20 cm

E3S-AD

1: 10 x 10 cm)

E3S-AD

100

50
30

5
3

2.5

0.3

0.1

500

300

100

Sensing object: white
(E3S-AD

2: 20 x 20 cm

E3S-AD

1: 10 x 10 cm)

E3S-AD

500
300

100

50
30

5
3

0.5

E3S-AD

E3S-AD

1, -AD

2 (White Paper within

Short Distance)

E3S-AD

1, -AD

2 (Black Paper within

Short Distance)

Sensing object: white
(E3S-AD

2: 20 x 20 cm

E3S-AD

1: 10 x 10 cm)

500

200

100

Sensing object: white
(E3S-AD

2: 20 x 20 cm

E3S-AD

1: 10 x 10 cm)

500

200

100

Excess gain ratio

E3S-AD

Distance (cm)

Excess gain ratio

Distance (cm)

E3S-AD

E3S-AD

3, -AD

(Detection of White Paper)

Sensing object: white
(E3S-AD

3/E3S-

8: 10 x 10 cm)

Excess gain ratio

Distance X (mm)

100

150

200

E3S-AR

1 (With Reflector: E39-R1)

100

Sensing object: black
(E3S-AD

3/E3S-

8: 10 x 10 cm)

Excess gain ratio

Distance X (mm)

E3S-AD

3, -AD

(Detection of Black Paper)

100

Excess gain ratio

Distance (m)

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

Operating level

E3S-A

Operating Range (Typical)

E3S-AD

OPERATING RANGE

Parallel Operating Range (Typical)

E3S-AT

E3S-AD

Distance X (m)

Parallel operating range Y (cm)

Operating position Y (mm)

Distance
X (cm)

Operating position Y (mm)

Distance
X (cm)

OPERATING RANGE (typical)

SENSING DISTANCE VS.

OBJECT SIZE

E3S-AD

3, E3S-AD

E3S-AD

3, E3S-AD

8 (Left and Right)

Operating position Y (mm)

-20

-40

-60

100 120

140 160

Distance X (mm)

Operating position Y (mm)

-20

-40

-60

100 120

140 160

Distance X (mm)

Sensing object: white

OFF

Sensing distance (mm)

200

180

160

140

120

100

Area of object (cm)

SENSING DISTANCE VS. OBJECT SIZE

REFLECTOR PARALLEL

MOVEMENT

E3S-AD

(Typical) E3S-AR

Sensing distance (cm)

0 5x5 10x10 20x20 30x30

OFF

Sensing object: white

Sensing distance (cm)

0 5x5 10x10 20x20 30x30

Size of object (cm)

OFF

Sensing object: white

Parallel operating range Y (cm)

0.5

1.0

1.5

2.0

2.5

Distance X (m)

E3S-AD

3, E3S-AD

8 (Up and Down)

E3S-A

Dimensions

Unit: mm (inch)

SENSORS

E3S-AD11, E3S-AD12, E3S-AD13, E3S-AD31, E3S-AD32,
E3S-AD33 (see note 1), E3S-AD21, E3S-AD22,
E3S-AD23, E3S-AD41, E3S-AD42, E3S-AD43
Receiver: E3S-AT11, E3S-AT31 (see note 2)

Emitter: E3S-AT11, E3S-AT31 (see note 3)

E3S-AT21, E3S-AT41

M3 holes (typ.)

Lens 7 x 7

Optical axis

12.5

Turbo switch

1.3

12.9

1.3

40 (1.57)

12.9

5.5

10.5

40 (1.57)

Sensitivity adjuster (white)

Time adjuster (black)

12.4
(0.49)

22.3
(0.88)

2.5

Light indicator (red)

Stability indicator (green)

Light indicator (red)

Stability indicator
(green)

Optical axis

13.5

12.4

Time adjuster
(Turbo switch)
(black)

Light indicator
(red)

Sensitivity
adjuster
(white)

3.6

5.5

12.4

1.3

10.5

8.3

M3 holes (typ.)

Turbo
switch

2.5

Lens 7 x 7

Optical axis

13.5

NOTES: 1. No time adjuster/turbo included on models E3S-AD61, E3S-AD62, E3S-AD81and E3S-AD82.

2. No time adjuster included on models E3S-AT61 and E3S-AT81.
3. No turbo switch included on models E3S-AT61 and E3S-AT81.

E3S-AD61, E3S-AD62, E3S-AD63, E3S-AD81, E3S-AD82,
E3S-AD83 (see note 1), E3S-AD71, E3S-AD72, E3S-AD73,
E3S-AD91, E3S-AD92, E3S-AD93
Receiver: E3S-AT61, E3S-AT81 (see note 2)

Emitter: E3S-AT61, E3S-AT81 (see note 3)

E3S-AT71, E3S-AT91

E3S-A

SENSORS (continued)

E3S-AD16, E3S-AD17, E3S-AD18, E3S-AD36, E3S-AD37, E3S-AD38
Receiver: E3S-AT16, E3S-AT36

Emitter: E3S-AT16, E3S-AT36

1.3

50 (1.97)

M12
connector

10.5

Optical axis

Lens 7 x 7

12.9

Sensitivity adjuster
(white)
(receiver only)

12.4
(0.49)

Light indicator (red)

Stability indicator (green)

12.4

Light indicator (red)

M12

connector

1.3

17.8

2.5

10.5

M12
connector

Lens 7 x 7

51.3

(2.02)

13.5

8.3

E3S-AD66, E3S-AD67, E3S-AD68, E3S-AD86, E3S-AD87, E3S-AD88
Receiver: E3S-AT66, E3S-AT86

Emitter: E3S-AT66, E3S-AT86

(0.83)

1.3

Light indicator
(red)

Stability indicator
(green)

3.6

Sensitivity
adjuster
(white)

10.5

(0.47)

Optical axis

M12

connector

13.5

8.3

1.3

10.5

2.5

Lens 7 x 7

Optical axis

2.3

5.5

42.3

15.2

1.3

10.5

2.3

21.3

(0.89)

11.5

Emitter

Lens 7 x 14

Receiver

Optical axis

12.4

Turn to adjust the OFF-delay time:
push to switch turbo function on.

OFF-delay time adjuster/turbo
switch (black)

Sensitivity
adjuster
(white)

2.5

Light indicator (red)

Stability indicator (green)

E3S-AR11, E3S-AR31 (see note)
E3S-AR21, E3S-AR41

NOTE: No time adjuster/turbo included on models E3S-AR11 and E3S-AR31.

E3S-A

SENSORS (continued)

E3S-AR61, E3S-AR81
E3S-AR71, E3S-AR91

Receiver

Lens 7 x 14

Optical axis

Emitter

8.3

13.5

12.4

(0.49)

10.5

Stability indicator
(green)

1.3

Light indicator (red)

5.9

23.3

(0.92)

5.5

M3 holes (typ.)

Sensitivity adjuster (white)

OFF-delay time
adjuster/turbo
switch (black)
Turn to adjust the
OFF-delay time:
push to switch
turbo function

2.5

E3S-AR16, E3S-AR36

Sensitivity adjuster (white)

42.3

12.4 12

1.3

Receiver

11.5

M12
connector

10.5

Optical axis

Lens 7 x 14

15.2

2.5

2.3

Light indicator (red)

Stability indicator (green)

Emitter

E3S-AR66, E3S-AR86

Sensitivity adjuster (white)

Stability
indicator
(green)

Light
indicator
(red)

Receiver

14.9

Optical axis

Emitter

3.6

M12
connector

Lens 7 x 14

2.5

1.3

10.5

E3S-A

OPTIONAL CONNECTOR CORDSETS

Cordsets consist of a female connector and 3-conductor, 22 AWG, PVC jacketed cable rated for 300 V, 90

�

C. The cable may be

extended to a maximum of 200 m (656 ft).

Silver-plated
copper contacts

14.67

(0.57)

34.92

(1.32)

Aluminum
coupling nut

Straight Connector Cordsets Y96E-43SD

2 m (6.56 ft) length for Y96E-43SD2
5 m (16.40 ft) length for Y96E-43SD5
10 m (32.81 ft) length for Y96E-43SD10

Right Angle Connector Cordsets Y96E-43RD

2 m (6.56 ft) length for Y96E-43RD2
5 m (16.40 ft) length for Y96E-43RD5
10 m (32.81 ft) length for Y96E-43RD10

Face View, Female Connector

�

2. Output*
White

3. 0 V
Black (Blue)

1. +V
Red
(Brown)

4. Output
White (Black)

14.67

(0.57)

Silver-plated
copper contacts

Aluminum
coupling nut

26.5

(1.04)

NOTES:
*Not used on 3-wire models.
IEC colors are shown in parentheses.

E39-R1 Reflector
(included with E3S-AR

)

CORNER CUBE REFLECTORS

7.5 (0.30)

2.7 (0.11)

7 (0.276)

1.6 (0.06)

34 (1.339)

(2.07)

(2.05)

(2.32)

Two M3

(0.47)

3.2 (0.13)

Nut (M5)

Spring washer (M5)

E39-L7 Reflector Adapter
for E39-R1 Reflector

Two 3.5

(0.14)

dia.

8 (0.32)

59.9

(2.36)

39.3 (1.55)

34 (1.34)

E3S-A

CORNER CUBE REFLECTORS (continued)

E39-R3 Optional Reflector

0.2

34.8

19.3

Two M3

1.2

25.4 34

Dimensions with E39-L54 Mounting Bracket (included)

41.8 25.4

�

0.1

10.1

1.2

Two M3

(1.50)

3.4

18.45

4.5

(1.14)

3.4

�

13.7

0.2

(0.43)

(0.63)

(1.33)

1.2

22.9

E39-R4 Optional Mini-reflector

13.7

9.7

�

0.1

4.9

1.4

Two, 2.2 dia.

�

0.1

E39-RSA Optional Adhesive-backed Reflector

10 8

Four 1R

Reflective
surface

Adhesive tape side

0.7

40
38

Four 1R

Reflective

surface

Adhesive
tape side

0.7

E39-RSB Optional Adhesive-backed Reflector

E39-R5 for E3S-A Sensors

OPTICAL AXIS CONFIRMATION REFLECTOR

59.9

11.2

7.9

9.7

7.5

9.7

15.9

11.6

11.7

40.9

Bracket clips to
the front of E3S-A
receiver

E3S-A

Operation

Photoelectric sensor

Sensing object

Photoelectric sensor

Sensing object

Min

Max

Min

Max

Min

Max

OFF

LIGHT
(red)

STABILITY
(green)

LIGHT
(red)

STABILITY
(green)

LIGHT
(red)

STABILITY
(green)

Place target at the desired
sensing distance. Set sensitivity
adjuster to the minimum scale
position, and gradually increase
sensitivity by turning the sensitiv-
ity adjuster clockwise until the
Light Incident indicator (red LED)
turns ON. Position A designates
the point at which the LED has
turned ON.

Remove the target. Starting from
the maximum scale position,
gradually decrease sensitivity by
turning the sensitivity adjuster
counterclockwise until the Light
Incident indicator (red LED) turns
OFF. Position B designates the
point at which the LED has turned
OFF.

Set the sensitivity indicator to the
position between Positions A and
B (in some cases, Positions A
and B are opposite of the above
example). The photoelectric
sensor will then work normally if
the stability indicator (green) is lit
with and without the target. If it
is not lit, stable operation cannot
be expected, in which case a
different detection method should
be applied.

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 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.

Photoelectric sensor

Sensing object

Steps

Step 1

Step 2

Step 3

Function

Determine Position A

Determine Position B

Adjust to optimum setting

Sensing
Condition

Sensitivity
adjuster

Indicators

Procedure

SENSITIVITY ADJUSTMENT

TIMER AND TURBO SWITCH

E3S Sensors equipped with the self-diagnostic feature incorpo-
rates an OFF-delay timer that can be adjusted within range of 0 to
100 ms.

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. The OFF-delay time adjuster of the retroreflective
and the 20-cm diffuse reflective sensor is used as a turbo switch.
When the adjuster 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 adjuster when turning it.

Turbo Function (Turbo Switch)

With the turbo function switched ON, the light spot is visible even
at a distance of 20 cm (7.87 in), making it easy to check the sensing
position and the angle of the optical axis.

1. After using the turbo function, readjust 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 adjuster) was pressed.

2. Press the OFF-delay time adjuster to switch ON the turbo

function with a maximum force of 1 kg and within a maximum
period of 3 minutes. (The photoelectric sensor, however, will
not malfunction even if the turbo function is switched on for
more than 3 minutes.)

The turbo function is effective with the turbo switch pressed, and
the function is reset automatically when released.

Normal Operating Condition

Sensitivity adjuster

With Turbo Switch ON

Visible spot

PUSH

The OFF-delay
time adjuster is
used as a turbo
switch (black)

E3S-A

Self-Diagnostic Function

Self-
diagnostic
function

The self-
diagnostic
alarm output
alerts the
user to this
state if it
continues for
0.3 s.

Green Indicator

Stable operating
state with incident
light: Stable
operation is
expected in the
rated temperature
range with the
green indicator
ON.

Conditional
operating state
with incident light:
Stable operation is
expected if the
temperature
fluctuation is within

�

10% of the

primary
temperature.

Stable operating
state with no
incident light:
Stable operation is
expected in the
rated temperature
range with the
green indicator
ON.

Amount of
incident light

1.2 or more

1.0 to 1.2

0.8 to 1.0

0.8 or less

Indicator

Green Red

With this function, the E3S-A sensor 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.

Incident light
indicator (red)

With light
incident (red
indicator: ON)

Without light
incident (red
indicator: OFF)

Sensing object

Self-diagnostic example

The optical axis misaligned by vibration.

Light decreased by dust.

With light leakage (through-beam and retroreflective
sensors)

Light reflected from the floor or the background (diffuse
reflective sensors)

With the influence of
external noise

Sensing
object

Noise

EXTERNAL DIAGNOSTIC INPUT FUNCTION

To switch the emission off, short-circuit the gray (pink) and the
black (blue) cords of the emitter of the E3S-AT

or the

E3S-AR

with the NPN output feature. For the E3S-AR

with

the PNP output feature, short-circuit the gray (pink) and the red
(brown) cords.

Light emission

Red (Brown) + V

No emission

Red (Brown) + V

Black (Blue) 0 V

ON
(with PNP output)

ON
(with NPN output)

Black (Blue) 0 V

OFF
(with PNP output)

Gray (External-
diagnostic input)

OFF
(with NPN output)

Gray (Pink)
(External-
diagnostic input)

NOTE: IEC colors are shown in parentheses.

Dust

E3S-A

Aduster cap

SLITS FOR THROUGH-BEAM SENSORS

E39-S46 Slit Set
Using slits allows smaller objects to be detected and reduces
the sensing distance.

Use the rubber attachment with the metal cover if a slit width of
2 mm is required. 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.

NOTE: 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).

Slit width Sensing distance

Min. object size

0.5 mm

0.5 m (1.64 ft)

0.5 mm (0.02 in)

1 mm

1.1 m (3.61 ft)

1 mm (0.04 in)

2 mm

2.4 m (8.20 ft)

2 mm (0.08 in)

2 mm

Metal cover

Slit (0.5 mm or 1 mm)

Rubber attachment

Arrow indicating
position
of optical axis

Notches to hold cover

E3S-A

OPTICAL AXIS CONFIRMATION REFLECTOR E39-R5

Use this attachment when the set distance is long and
adjustment is mechanically difficult with a sensing object.

Attach the reflector to the receiver (refer to the figure).

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.

Eye

Emitter

Receiver

E39-R5

ADJUSTER CAP AND OPTIONAL E39-G2 SENSITIVITY ADJUSTER KNOB

In order to prevent the sensitivity or OFF-delay time that
has been set from changing accidentally, cover the
adjusters with the adjuster cap (enclosed).

To temporarily use the knob to adjust the sensitivity of the
photoelectric sensor, insert side A into the shaft of the
sensitivity adjuster. To snap the adjuster onto the sensor,
push side B onto the sensitivity knob.

Press the adjuster cap until
this face touches the name
plate on the sensor.

Aduster

(B)

(A)

E39-E6 MUTUAL INTERFERENCE FILTER

A set of 4 filters are sold together for two through-beam
models (for 2 each of emitters and receivers).

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 (refer to
the figure) 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).

Optical axis
confirmation
reflector

Emitter

Be aware of the direction of
polarization.

Receiver

Adjuster Cap (Supplied with each sensor)

E39-G2 Adjuster Knob

Электронный компонент: E3S-AT11

Document Outline