E3S-CL
A-111E3S-CL
Distance setting photoelectric sensor in metal housing
E3S-CL
High water, oil and detergent resis-
tance
Minimal black/white error for highest
reliability detecting different colored
objects (E3S-CL1)
Features
Eliminates Background Influences with a
Hysteresis of Only 2% max. (E3S-CL1)
The hysteresis is the industry's minimum 2% max. (E3S-CL1).
As a triangulation measuring is used, objects behind the set-
ting distance cannot be detected. The sensor is insensitive to
the influence of background objects of high reflectivity, and
stable detects works on a conveyor from above. The hystere-
sis of the E3S-CL2 is 10% max. of the detecting distance (5%
max. for white paper).
What Is Distance Setting?
(Differences from other detecting system)
Distance-setting
Diffuse-reflective
Fea-
tures
When the sensing object moves in direction A, the center position
of the reflected light moves in direction B. This is received by the
2-split photodiode and the place where the incident levels are the
same on the N and F sides is defined as the setting distance.
The object is detected by the incident circuit processing only when
N F, and is not detected when N F. Therefore, detection is stable
without being influenced by the work type and background ob-
jects.
Struc-
ture
Fea-
tures
Since the level of the reflected light is judged for detection , the
sensing distance varies with the color, material and/or size of the
work.
A malfunction may occur if there is any object of high reflectivity in
the background.
Struc-
ture
N
F
A setting
distance
variable
Light source
LED
Received element
(Two division photodiode)
Setting range
A
B
Detecting range
N: Near
F: Far
Detecting range
Received
element
Light source
LED
Detecting area
F502-EN2-04.book Seite 111 Dienstag, 26. Juli 2005 5:48 17
A-112 Standard Photoelectric Sensors
6-turn adjuster with indicator
The 6-turn adjuster with indicator ensures ease
of distance setting.
Fine distance setting is possible.
Optical Technology of E3S-CL
NPN/PNP Output Selectable.
Light-ON/Dark-ON is also switch selectable.
Conforms to Applicable EN/IEC Standards
The sensors satisfy the electrical
safety (IEC947-5-2), noise resis-
tance (IEC947-5-2, IEC801-2/3/
4) and noise radiation restrictions
(EN500 81-2, EN55011) required
for photoelectric sensors.
Application
<m
E3S-CL1
E3S-CL2
Operation unit cover
Operation indicator (orange)
Stability indicator (green)
Setting distance indicator
Setting distance
adjuster (worm gear)
Cam
Two division photodiode
Receiver lens
Light source LED
Emitter lens
B
y
t
urn
i
ng
th
e
di
s
t
ance se
tti
ng a
d
-
j
uster (worm gear), the rotation of the
gear moves the cam to change the
incident angle of the whole incident
block (lens and photodiode), setting
the distance.
A stainless background
E3S-CL1
Detecting Milk Cartons
Stable detection is not
affected by stainless steel
background or carton colors.
E3S-CL1
Detecting Food Products on Conveyors
Objects can also be detected from above
a conveyor.
E3S-CL1
Detecting Wafer Cassettes
Easy distance setting with 6-turn adjustment
and indicator.
E3S-CL2
Detecting Boxes
Stable detecting boxes regardless of box posi-
tion.
E3S-CL2
Detecting Construction Materials (Boards)
maining on a Pallet
Construction materials can be
detected from above.
E3S-CL2
Detecting Tires on a Conveyor Line
Stable detecting black objects such as tires.
F502-EN2-04.book Seite 112 Dienstag, 26. Juli 2005 5:48 17
A-113E3S-CL
E3S-CL
Ordering Information
Rating/performance
Shape Sensing/Setting range Model
E3S-CL1
E3S-CL2
Sensing method Distance-setting
Item Model E3S-CL1 E3S-CL2
Sensing 5 to 200 mm (White paper 200 x 200 mm)
(Setting distance 200 mm)
5 to 500 mm (White paper 200 x 200 mm)
(Setting distance 500 mm)
Setting range 40 to 200 mm (White paper 200 x 200 mm) 50 to 500 mm (White paper 200 x 200 mm)
Differential distance 2% max. 10% max.
Reflectivity characteristics
(black/white error)
*1
*1. Sensing distance difference between standard white paper (reflectivity 90%) and standard black paper (reflectivity 5%)
2% max. 10% max.
Light source (wave length) Red LED (700 nm) Infrared LED (860 nm)
Power supply voltage 10 to 30 VDC [ripple (p-p) 10% included]
Current consumption 35 mA max. 50 mA max.
Control output
Load supply voltage 30 VDC max., load current 100 mA max. (residual voltage NPN output: 1.2 V max.,
PNP output: 2.0 V max.) Open collector output type (NPN/PNP switch selectable) Light-ON/Dark-ON
switch selectable
Protective circuits Reverse polarity protection, output short-circuit protection, mutual interference prevention
Response time Operation or reset: 1 ms max. Operation or reset: 2 ms max.
Distance setting 6-turn endless adjuster (with indicator)
Ambient illuminance Incandescent lamp: 5,000 lux max. Sunlight 10,000 lux max.
Ambient temperature Operating/Storage: -25°C to 55°C (with no icing or condensation)
Ambient humidity Operating/Storage: 35% to 85%RH (with no condensation)
Insulation resistance 20 M min. at 500 VDC
Dielectric strength 1,000 VAC at 50/60 Hz for 1 minute
Vibration resistance 10 to 55 Hz, 1.5 mm double amplitude for 2 hours each in X, Y, and Z directions
Shock resistance Destruction: 500 m/s2 for 3 times each in X, Y, and Z directions
Protective structure IEC Standard IP67, NEMA 6P (limited to indoor use)
*2
*2. NEMA (National Electrical Manufacturers Association) Standards
IEC Standard IP67, NEMA 6P (limited to indoor use)
Connection method Pre-wired models (standard length: 2 m)
Weight (Packed state) Approx. 170 g
Ma-
terial
Case Zinc diecast
Operation panel
cover Polyethyl sulfon
Lens Acrylics
Mounting Brackets Stainless steel (SUS304)
Accessories Mounting bracket, hexagon bolt M4 x 12 (with spring washer, flat washer), adjusting screwdriver, instruction
manual
Red light Infrared light
Setting range
40 to 200 mm
Max. setting
5 40mm
Detecting range 200mm5
5 to 200 mm
Min. setting
5 50mm Setting range
50 to 500 mm
Max. setting
Detecting range 500mm5
5 to 500 mm
Min. setting
F502-EN2-04.book Seite 113 Dienstag, 26. Juli 2005 5:48 17
A-114 Standard Photoelectric Sensors
Characteristic data (typical)
Spot Diameter vs. Sensing Distance
E3S-CL1 E3S-CL2
Short distance characteristic
E3S-CL1 E3S-CL2
Spot diameter(mm)
Distance (mm)
25
20
15
10
5
0 50 100 150 200 250
Spot diameter(mm)
Distance (mm)
100
80
60
40
20
0 100 200 300 400 500
Sensing distance(mm)
Material
200
150
100
50
0White paper Black paper
Sensitivity adjuster
: Max
Sensitivity adjuster
: Min
2.7mm 1.4mm
33.7mm 32.7mm
11.4mm
23.7mm
Sensing distance(mm)
Material
500
400
300
200
100
0White paper Black paper
Sensitivity adjuster
: Max.
Sensitivity adjuster
: Min.
0.7mm 0.4mm 6.2mm 2.6mm
36mm 33mm
F502-EN2-04.book Seite 114 Dienstag, 26. Juli 2005 5:48 17
A-115E3S-CL
E3S-CL
Output Circuit Diagram
NPN output
PNP output
Nomenclature:
Operation panel
Output selection switch
A When using the sensor with NPN output, move the switch
to the position.
B When using the sensor with PNP output, move the switch
to the position.
Mode selection switch
A When using the sensor with Light-ON, move the switch to
the position.
B When using the sensor with Dark-ON, move the switch to
the position.
Distance Adjuster
A Turning the distance setting adjuster clockwise (to the Max
position) increases the detecting distance, and turning it
counterclockwise (to the Min position) decreases the dis-
tance.
B The distance setting adjuster is a 6-turn endless adjuster
ranging from the Min position to the Max position, and its
number of turns is displayed on the setting distance indi-
cator according to the rotation of the adjuster.
Model
Operating status of
output transistor
Timing chart Mode selec-
tion switch Output circuit
E3S-CL1
E3S-CL2
Light ON LON
(LIGHT ON)
Dark ON DON
(DARK ON)
Incident
Interrupted
ON
OFF
ON
OFF
Operate
Reset
Operation
indicator
(orange)
Output
transistor
Load
(Relay)
Operation
indicator
Stability
indicator PNP
output transistor
NPN
output transistor
NPN and PNP
output selector
(Orange) (Green)
Brown
Black
Blue
Main
circuit
Load
ZD
*
ZD
* Please make a changeover switch into the NPN side.
Load current
Control output
10 to 30 VDC
0V
Incident
Interrupted
ON
OFF
ON
OFF
Operate
Reset
Operation
indicator
(orange)
Output
transistor
Load
(Relay)
Model
Operating status of
output transistor
Timing chart Mode selec-
tion switch Output circuit
E3S-CL1
E3S-CL2
Light ON LON
(LIGHT ON)
Dark ON DON
(DARK ON)
Incident
Interrupted
ON
OFF
ON
OFF
Operate
Reset
Operation
indicator
(orange)
Output
transistor
Load
(Relay)
Operation
indicator Stability
indicator PNP
output transistor
NPN output
transistor
NPN and PNP
output selector
(Orange) (Green)
Brown
Black
Blue
Main
circuit
Load
ZD
*
ZD
* Please make a changeover switch into the PNP side.
Control output
Load current
10 to 30 VDC
0V
Incident
Interrupted
ON
OFF
ON
OFF
Operate
Reset
Operation
indicator
(orange)
Output
transistor
Load
(Relay)
Operation indicator (orange)
Stability
indicator (green)
Output selector
Mode selector
Setting distance indicator
Setting distance adjuster
Operation unit cover
NPN
PNP
F502-EN2-04.book Seite 115 Dienstag, 26. Juli 2005 5:48 17
A-116 Standard Photoelectric Sensors
Operation
Sensitivity adjustment (distance setting type, Light-ON)
Precautions
Design
Cable
The oil-resistant cable is used to ensure oil resistance.
(E3S-CL2)
Installation
Sensor installation
Mounting orientation
Install the photoelectric sensor in
such manner that its detection
surface and the object surface
are parallel (without inclination
relative to the sensing object).
If the sensing object has a
glossy surface, incline the Sen-
sor by 5° to 10° as shown on the
right. In this case, ensure that
the Sensor is not influenced by
any background objects.
If there is a mirror-smooth object under the photoelectric
sensor, operation may become instable. Therefore, incline
the photoelectric sensor as shown below or move it away
from the object.
Install the photoelectric sensor in either of the following ori-
entations, being careful of the direction in which the sensing
object will move.
Also, when the color/material of the sensing object varies
extremely, install the photoelectric sensor in either of the
following orientations.
Install the photoelectric sensor so that the sun, fluorescent
lamp, incandescent lamp or any other strong light will not
enter the directional angle range of the sensor.
Mounting Precautions
Do not strike the Photoelectric Sensor with a hammer or
any other tool during the installation of the Sensor, or the
Sensor will loose its water-resistive properties.
Use M4 screws.
Tighten the screws to the torque of 1.2 Nm max.
Sequence Detection state Position of dis-
tance setting ad-
juster
State of setting dis-
tance indicator Indicator state Adjustment Steps
(1) Point (A)
Place a sensing object in the predetermined
position, turn the adjuster clockwise until the
incident indicator (orange) is turned ON, and
define this position as (A).
(2) Points (B),
(C)
(1) If there is a background object, remove the
sensing object, turn the adjuster further
clockwise until the incident indicator (or-
ange) is turned ON, and define this posi-
tion as (B). Turn the adjuster counterclock-
wise from (B) until the incident indicator
(orange) is turned OFF, and define this po-
sition as (C).
(2) If there is no background object, define the
maximum adjuster position (Max) as (C).
(3) Setting ---
Set the adjuster in the middle of positions (A)
and (C). Also make sure that the stability indi-
cator (green) is turned ON when there is an
object and when there is no object. When the
indicator is not turned ON, reexamine the de-
tection method since there is a little allowance.
Correct Use
Photoelectric
Sensor
B
ackground obje
c
Sensing
object Min Max
(A)
1
3
(A)
Stability indicator
(green)
Operation indicator
(orange)
ON
Æ
OFF OFF
Æ
ON
Photoelectric
Sensor
Background objec
Sensing
object
Min Max
(C)
(B)
3
5
(C)
(B)
Stability indicator
(green)
Operation indicator
(orange)
ON
Æ
OFF ON
Æ
OFF
Min Max
(A)
(C)
1
3
5
(A)
(C)
Stability indicator
(green)
Operation indicator
(orange)
ON ON
´
OFF
Sensing object surface
Sensing surface
Glossy object
Sensing object
Mirror-like object
Sensing object Sensing object
Movement direction
Movement direction
Sensing object
Movement direction
Movement direction
Movement direction
F502-EN2-04.book Seite 116 Dienstag, 26. Juli 2005 5:48 17
A-117E3S-CL
E3S-CL
Others
Oil resistance/chemical resistance (E3S-CL2)
For the oil resistance ofE3S-CL2, the Sensor has passed
tests on the oils given in the following table. Refer to the table
for examining the oil to be used. Depending on the oil type,
however, the Sensor may not be able to exhibit its perfor-
mance.
Note: 1 .E3S-C was submerged in the oils in the above table at 50°C for 240
hours, and passed the test of 100-M or more insulation resistance.
2 .For use in the environment where E3S-C is exposed to the oil other
than those in the above table, use the dynamic viscosity and PH in the
above table. Pre-check the oils since the sensor may be affected by
additives etc. in the oils.
Dimensions (Unit: mm)
Testing
oil clas-
sifica-
tion
JIS classi-
fication Product name Dynamic vis-
cosity (mm2/s)
at 40°C PH
Lubri-
cant --- Velocity No. 3 2.02
---
Water-in-
soluble
coolant
Class 2
No. 5 Daphne Cut
Not less than
10 to less than
50
Class 2
No. 11 Yushiron Oil No. 2ac Less than 10
Water-
soluble
coolant
Class W1
No. 1
Yushiroken EC50T-3
---
7`9.5
Yushiron Lubic HWC68 7`9.9
Class W1
No. 2 Gryton 1700D 7`9.2
Class W2
No. 1 Yushiroken S50N 7`9.8
Note: The output selector, mode selector and distance setting adjuster are exposed when the cover is opened.
E3S-CL1
E3S-CL2
23.8
7.3
6.2
40
15.4
Receiver
2-M4
Slotted hexagonal bolt
1.1 37.2 2-M4
42.6
40
44.7
16.5
16.1
54.5
28 21 2
16
9.1
Emitter and optical
axis position
Sensing optical axis
Stability indicator
Operation indicator
11.7
Stainless steel
4.2
9.2
19.7 12
4.2 20
25.4
2-M4
E3S-CL1: Vinyl-insulated round cable of 4 dia.
3 cores conductor cross-sectional area:
0.2 mm
²
; insulation diameter: 1.1 mm
Standard length: 2 m
With Mounting Bracket Attached
Mounting holes
E3S-CL2: Vinyl-insulated round cable of 4 dia.
3 cores conductor cross-sectional area:
0.2 mm
²
; insulation diameter: 1.1 mm
Standard length: 2 m
F502-EN2-04.book Seite 117 Dienstag, 26. Juli 2005 5:48 17
A-118 Standard Photoelectric Sensors
In the interest of product improvement, specifications are subject to change without notice.
ALL DIMENSIONS SHOWN ARE IN MILLIMETERS.
To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527.
Cat. No. E237-E2-02A-X
F502-EN2-04.book Seite 118 Dienstag, 26. Juli 2005 5:48 17