2
General Purpose Photoelectric Sensor E3S-B
Miniature DC Sensor with Built-in
Amplifier Offers Vertical or Horizontal
Single-Screw Mounting
HVisible red beam
HHigh-speed sensing, 0.5 ms response time
HNEMA 4X, 6 and IP67
HSingle-screw mounting
HPre-wired, Light-ON/Dark-ON wire
selectable
Ordering Information
JSENSORS
Through-beam sensors include both emitter and receiver. The polarized retroreflective sensors include E39-R1 reflector. All sensors
include mounting hardware.
Method of detection Through-beam Polarized retroreflective Diffuse reflective
Sensing distance 2 m (6.56 ft) 1 m (3.28 ft) 20 cm (7.87 in)
Mounting Output Part number
Horizontal NPN E3S-BT11 E3S-BR11 E3S-BD11
PNP E3S-BT31 E3S-BR31 E3S-BD31
Vertical NPN E3S-BT61 E3S-BR61 E3S-BD61
PNP E3S-BT81 E3S-BR81 E3S-BD81
JACCESSORIES
Description Part number
Slits for E3S-BTjj sensors (3 pairs of adhesive slits: 2 mm, 1 mm and 0.5 mm wide) E39-S47
Aperture kit for E3S-BTjj sensors (3 pairs of adhesive apertures: 2 mm, 1 mm and 0.5 mm dia.) E39-S48
Mutual interference filters for E3S-BTjj sensors (2 pairs: horizontal and vertical, includes mounting hardware) E39-E8
Small corner cube reflector 10 to 60 cm (3.94 to 23.62 in) E39-R3
7 to 35 cm (2.76 to 13.78 in) E39-R4
Adhesive back reflector 10 to 20 cm (3.94 to 7.87 in) E39-RSA
10 to 30 cm (3.94 to 11.81 in) E39-RSB
Stainless steel mounting bracket for E39-R1 reflector E39-L7
Stainless steel mounting bracket for E39-R3 reflector E39-L54
JACCESSORIES
Description Part number
Corner cube reflector (supplied with E3S-BRjj)E39-R1
Stainless steel mounting bracket for horizontal sensors (supplied with each sensor) E39-L71
Stainless steel mounting bracket for vertical sensors (supplied with each sensor) E39-L72
Mounting adapter plate E39-L61
E3S-B E3S-B
3
Specifications
Part number E3S-BTjj E3S-BTjj E3S-BDjj
Method of detection Through-beam Polarized retroreflective Diffuse reflective
Supply voltage 10 to 30 VDC, !10%
Current consumption 35 mA max. (emitter and receiver) 25 mA max.
Sensing
distance
White mat paper 0to2m
(0 to 6.56 ft)
0.1to1mwithE39-R1
(0.33 to 3.28 ft)
0.1to20cm
(0.04to7.87in)
Black mat paper
(
)
(
)
0.2to6cm
(0.08to2.36in)
With accessories 60 cm (1.97 ft) with E39-E8 filter
1 m (3.28 ft) with 2 mm slit
50 cm (1.64 ft) with 1 mm slit
25 cm (9.84 in) with 0.5 mm slit
60 cm (1.97 ft) with 2 mm dia. aperture
17 cm (6.69 in) with 1 mm dia. aperture
4 cm (1.57 in) with 0.5 mm dia. aperture
10 to 60 cm with E39-R3
(3.94 to 23.62 in)
7to35cmwithE39-R4
(2.76 to 13.78 in)
10 to 20 cm with E39-RSA
(3.94to7.87in)
10 to 30 cm with E39-RSB
(3.94to11.81in)
—
Light source Pulse modulated red LED (700 nm)
Standard object Type Opaque materials Opaque materials Opaque and
transparent objects
Size 5.5 mm (0.22 in) dia.
minimum
30 mm (1.18 in) dia.
minimum
10 x 10 cm
(3.94x 3.94 in)
white mat paper
Operation mode Light-ON/Dark-ON operation, wire selectable
Variation in sensing distance — — +30% max., -0%
max.
Hysteresis — — 20% max.
Variation in optical axis
and mounting direction
!2_max.
Sensitivity Adjustable, 3/4-turn potentiometer
Mutual interference protection Not provided Provided Provided
Control output Type NPN transistor, open collector (E3S-Bj11, E3SBj61)
PNP transistor, open collector (E3S-Bj31, E3SBj81)
Max. load 100 mA max. at 30 VDC
Max. ON-state
voltage drop
1 VDC max. at 100 mA load current
Response time 0.5 ms max. for both ON and OFF operation
Circuit protection Load short-circuit protection, reverse polarity protection
Indicators Emitter:
Operation (red)
Receiver:
Operation (red)
Stability (green)
Operation (red), Stability (green)
Materials Lens Denatured polyarylate
Case Polybutylene terephthalate (PBT)
Bracket Stainless steel
Mounting Either side surface with one stud and one threaded hole. Bracket E39-L71 for horizontal or
E39-L72 for vertical sensors and hardware included.
Connections Prewired 2 m (6.56 ft) long cable
W
e
i
g
h
t
E
m
i
t
t
e
r
5
6
g
(
1
9
6
o
z
)
5
6
g
(
1
9
6
o
z
)
6
5
g
(
2
2
8
o
z
)
W
e
i
g
h
t
E
m
i
tter 5
6
g
(
1
.
9
6
oz
)
5
6
g
(
1
.
9
6
oz
)
6
5g
(
2
.
2
8
oz
)
g
Receive 66 g (2.31 oz) — —
Enclosure
r
a
t
i
n
g
IEC 144 IP67
rating NEMA 4X, 6
Ambient Operating -25_to 55_C (-13_to 131_F) with no icing
temperature Storage -40_to 70_C (-40_to 158_F)
E3S-BE3S-B
4
JOUTPUT CIRCUIT DIAGRAMS
NPN Output
Through-beam Emitter Through-beam Emitter
PNP Output
Through-beam Receiver, Retroreflective, Diffuse Reflective Through-beam Receiver, Retroreflective, Diffuse Reflective
Note: Circuits shown are for Light-ON operation. For Dark-ON operation, the gray wire is connected to the black wire (0 VDC).
IEC colors are shown in parentheses.
En
g
ineerin
g
Data
JEXCESS GAIN RATIO
Excess Gain vs. Set Distance (Typical)
E3S-BTj
jj
j1E3S-BR
j
jj
j1 (with E39-R1 Reflector)
E3S-BDj
jj
j1 (Detection of White Paper) E3S-BDj
jj
j1 (Detection of Black Paper)
E3S-B E3S-B
5
JOPERATING RANGE
Parallel Operating Range (Typical)
E3S-BTj
jj
j1 (Left and Right) E3S-BTj
jj
j1 (Up and down)
Sensing Distance vs. Set Distance
E3S-BTj
jj
j11
E3S-BDj
jj
j1 (Left and Right) E3S-BDj
jj
j1 (Up and down)
Dimensions
Unit: mm (inch)
JSENSORS
E3S-BT11
E3S-BT31
22
(0.87)
16
(0.63)
E39-L71 Mounting bracket M3 X 8
25 (0.98) 1.5
(0.06)
1.3
(0.05) 1.5
(0.06)
25.5 (1.00)
Emitter
10
(0.39)
12.5
(0.49)
3.1
(0.12)
29 (1.14)
28 (1.10)
1
(0.04)
Receiver
Cable
4mmOD,
2 m length
29 (1.14)
10
(0.39)
12.5
(0.49)
28 (1.10)
1
(0.04)
E3S-BE3S-B
6
Unit: mm (inch)
E3S-BT61
E3S-BT81
28
(1.10)
16
(0.63)
16
(0.63)
1.3
(0.05)
44.8
(1.76)
19.2
(0.76)
12.6
(0.50)
19.2
(0.76)
12.6
(0.50)
20
(0.79) 20
(0.79)
10
(0.39)
10
(0.39)
13
(0.51) 13
(0.51)
16 (0.63) 16 (0.63)
Emitter Receiver
E3S-BR11
E3S-BR31 30.3 (1.19)
16
(0.63)
1.5
(0.06)
27.8 (1.09)
22
(0.87)
12.5
(0.49)
10
(0.39)
1
(0.04)
29 (1.14)
1
(0.04)
Sensitivity adjuster (white)
E3S-B E3S-B
7
E3S-BR61
E3S-BR81
28
(1.10)
16
(0.63)
44.8
(1.76)
20
(0.79) 19.2
(0.76)
4 (0.16)
12.6
(0.50)
10
(0.39)
16 (0.63)
13
(0.51)
E3S-BD11
E3S-BD31
16
(0.63)
1.3
(0.05)
12.5
(0.49)
10
(0.39)
22
(0.87)
1.5
(0.06)
25.5 (1.00)
29 (1.14)
28 (1.10)
1
(0.04)
1
(0.04)
E3S-BE3S-B
8
Unit: mm (inch)
E3S-BD61
E3S-BD81
20
(0.79)
12.6
(0.50)
13
(0.51)
19.2
(0.76)
10
(0.39)
16 (0.63)
1 (0.04)
16
(0.63)
28
(1.10)
44.8
(1.76)
4 (0.16)
52
(2.05)
E39-R1Reflector
(Included with E3S-ARj
jj
j)
Two, 3.5 (0.14) dia.
40.3 (1.59)
34 (1.34)
2.7
(
0.11
)
8 (0.31)
1.6 (0.06)
59.9
(2.36)
7 (0.28)
7.5 (0.30)
62.1 (2.44)
E39-L7R1Reflector Adapter
for E39-R1Reflector
(Order Separately)
34 (1.34)
Two M3
52
(2.05)
59
(2.32)
39.3 (1.56)
3.2
(0.13)
Nut (M5)
M5
Spring
washer
(M5)
12 (0.47)
JCORNER CUBE REFLECTORS
E3S-B E3S-B
9
Dimensions with E39-L54 Mounting Bracket (included)
41.8
(1.65)
1.2
(
0.05
)
0.2
(0.01)
34
(1.34)
10.1
(0.40)
16
(0.63)
11 (0.43)
3.4
(0.13)
22.9
(0.90)
20
(0.79)
4.5
(0.18)
29 (1.14)
38
(1.50)
E39-R1Reflector
(Optional)
34 (1.34)
7 (0.28)
52
(2.05)
59.9
(2.36)
8 (0.31)
1.6
(0.06)
7.5 (0.30)
2.7 (0.11)
E39-R4Optional Mini-reflector
E39-RSA Optional Adhesive-backed Reflector E39-RSB Optional Adhesive-backed Reflector
2
(0.08)
23
(0.91)
13.7 (0.54)
1.4
(0.06)
4.9
(0.19)
0.7
(0.03)
35 (1.38)
35
(1.38)
40 (1.57)
0.7
(0.03)
JSLITS AND APERTURES FOR THROUGH-BEAM SENSORS
E39-S47 Slit Set
The kit includes two sets each of 0.5 mm, 1 mm and 2 mm slits.
Mount the adhesive-backed slit to the lens of both emitter and
receiver. Use the same slit size on both emitter and receiver for
best results.
The kit includes two sets each of 0.5 mm, 1 mm and 2 mm
diameter apertures. Mount the adhesive-backed aperture to the
lens of both the emitter and receiver. Use the same aperture
size on both emitter and receiver for best results.
E39-S48 Aperture Set
13
(0.51) 13
(0.51)
E3S-BE3S-B
10
JMUTUAL INTERFERENCE FILTER JMOUNTING ADAPTER PLATE
E39-E8E39-L61
2.1
(0.08)
16.2
(0.64)
2.2
(0.09)
28 (1.10)
2.5
(0.10)
14.5
(0.57)
Operation
JSENSITIVITY ADJUSTMENT
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.
Steps Step 1 Step 2 Step 3
Function Determine Position A Determine Position B Adjust to optimum setting
Sensing
condition Photoelectric sensor
Target
Photoelectric sensor
Target
Photoelectric sensor
Ta r g e t
Sensitivity
adjuster
Min Max Min Max Min Max
Indicators OFF ON
STABILITY
(green)
LIGHT
(red)
OFF
STABILITY
(green)
LIGHT
(red)
OFF ON OFF
STABILITY
(green)
LIGHT
(red)
Place target at the desired sensing
distance. Set sensitivity adjuster to the
minimum scale position and gradually
increase sensitivity by turning the
sensitivity 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) is 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.
E3SB E3SB
Cat. No. CEDSAX4 11/01 Specifications subject to change without notice. Printed in U.S.A.
OMRON ELECTRONICS LLC
One East Commerce Drive
Schaumburg, IL 60173
NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4.
1-800-55-OMRON
OMRON CANADA, INC.
885 Milner Avenue
Scarborough, Ontario M1B 5V8
416-286-6465
R
OMRON ON--LINE
Global -- http://www.omron.com
USA -- http://www.omron.com/oei
Canada -- http://www.omron.com/oci
