Optical Fiber Glossy Object Sensor
E3X-NL
E3X-NL
Utilization lightwave technology has inno-
vated glossiness detection. OMRON's
glossy object sensor can discriminate a
wide variety of glossiness differences. The
fiber-optic system has achieved the small,
non-contact models.
Features
Employs OMRON's unique FAO (Free Angle Optics)
technology which enables delicate sensing of object
glossiness without influence from colors and patterns.
Transparent films on boxes and labels on transparent films
can be detected.
Two different types of fiber heads meet a wide range
of applications.
Two different fiber heads are available.
According to applications, you can choose the short-distance,
small spot type ideal for detection of small objects or the long-
distance type that can perform in-line standard detection.
Short-distance, small spot type
E32-S15-1/-2
Ideal for precision detection
and small object detection.
Long-distance type
E32-S15L-1/-2
Resistant to object shake and
enables in-line standard detec-
tion.
Short-range small spot
Long-range
The teaching system ensures easy adjust-
ment just by pressing the button.
●
Adjustment man-hour saving
type requiring only a one-time
pressing of the button
●
Teaching system only re-
quires to push the button, en-
suring sensitivity adjustment
without individual differences.
10
±
3 m
m
Small spot in 2 mm dia.
20
±
7 m
m
Adopts the pulse-ON system that is insensi-
tive to disturbance light
The emitter (red LED) in the fiber head uses a pulse-ON
system to minimize the influence of disturbance light. The
Sensor provides stable sensing characteristics if disturbance
light occurs from fluorescent lamps in-line.
Amplifier Units
E3X-NL11
E3X-NL
A-197
Application
Short-distance, small spot type
Detection of tacked labels
Detection of grease or adhesive on parts
Detection of pipe, can or similar joints
Long-distance type
Detection of on-bottle labels insensitive to
distance variation or object inclination, en-
abling label detection on conveyor line.
Detection of shrink tubes Transparent shrink
tubes can be detected stable.
Detection of sealing tape
Features
Principles for Glossiness Detection by FAO
First, the light from a red LED passes through a polarizing fil-
ter so only the S wave is emitted.
If the detectable object is glossy, the S wave is reflected reg-
ularly and is transmitted as is to the Fiber Receiver 1.
If the detectable object is not glossy, there is more diffuse re-
flection, thus the polarization direction is randomized and a P
wave is generated.
The S and P waves are divided by the FAO (special polarized
beam splitter), the waves travel to their respective fiber receiv-
ers, and the variation in the glossiness is determined by com-
paring the two received signals.
Received fiber 2
(P wave only)
Received fiber 1
(S wave only)
ion S
Emiss
wave
only
Fuzzy Teaching Function Backs up Stable Detection
Supported by the fuzzy teaching function if objects have no
difference in glossiness. If the glossiness difference goes be-
low than the minimum sensing lev-
Difference in
Difference in
light energy
grossiness
el, the microprocessor in the
amplifier determines the discrimi-
nation means automatically.
Distinction means
Sensed by light energy difference
like an ordinary mark sensor.
Output
(When 2-point teaching is selected)
Measures against Double Refraction
There are transparent films and transparent plastic objects that
change the direction of polarized light when it passes through
the transparent films and transparent plastic objects. This is
called double refraction. Using the optional rotary mounting
bracket (E39-L109), the sensor unit can be inclined 45 degrees
to take measures against double refraction.
(Example) Metal cylindrical object coated with transparent film
Metal cylindrical
object coated with
transparent film
45˚
Sensing head
FAO
Emitter
Sensing
object
Lens
Polarized filter
S wave: vertical
P wave: parallel
The object can be sensed smoothly when
the angle of the sensing head is either 0˚ or 45˚.
A-198
Standard Photoelectric Sensors
Ordering Information
Sensors
Amplifier Units
Shape
Model
E3X-NL
Connection
method
Pre-wired type
33
E3X-NL11
59
32.2
Fiber Units
Sensor type
Shape
Sensing distance
Fiber length
0.5 m
Model
E32-S15-1
E32-S15-2
E32-S15L-1
E32-S15L-2
Red light
10
±
3 mm
1m
Reflective model
0.5 m
20
±
7 mm
1m
Accessories (Order Separately)
Mounting Brackets
Shape
Model
Quantity
Remarks
Can be used with the fiber unit
E32-S15-#. Mounting bracket vari-
able in rotary angle (0°, 45°) for sta-
ble detection of transparent films
(double-refractive objects) on
glossy objects such as metal or
glass plates.
E39-L109
1
Covers
Shape
Model
Quantity
Remarks
Attached to the amplifier unit
E3X-NL11. Please place an
order when the protective cover
is damaged or lost.
E39-G9
1
E3X-NL
A-199
Rating/Performance
Amplifier Units
Item
Model
12 to 24 VDC ±10%, ripple (p-p) : 10% max.
100 mA max.
Load supply voltage 30 VDC max., load current 100 mA max. (residual voltage 1 V max.)
Open collector output type (NPN output) Light-ON/Dark-ON switch selectable
Load power supply voltage 30 VDC max., load current 100 mA max. (residual voltage 1 V max.)
Open collector output type (NPN output)
Purple and blue (0 V) are connected when remote input turns ON: 0 V short-circuit current 1 mA max. Purple
and blue (0 V) are disconnected when remote input turns OFF: Open or 9 V min. (max. input voltage 24 V).
Note that the input is valid only when remote RUN/TEACH selection input (across pink-blue) is provided.
Protection from load short-circuit and reversed power supply connection
Operation or reset: 1 ms max.
Teaching system
OFF-delay fixed at 40 ms
Incandescent lamp: 3,000 lux max. Sunlight 10,000 lux max.
Operating: -25°C to 55°C, Storage: -40°C to 70°C (with no icing or condensation)
Operating: 35% to 85% RH, Storage: 35% to 95% RH (with no icing or condensation)
20 M
min. at 500 VDC
1,000 VAC at 50/60 Hz for 1 minute
10 to 55 Hz, 1.5-mm double amplitude or 300 m/s
2
(approx. 30G) for 2 hrs each in X, Y, and Z directions
Destruction: 500 m/s
2
for 3 times each in X, Y, and Z directions
IEC 60529 IP50 (with Protective Cover attached)
Pre-wired models (standard length: 2 m)
Approx. 200 g
PBT (polybutylene terephthalate)
Polycarbonate
Mounting bracket, instruction manual
E3X-NL11
Light source (wave length) Red LED (680 nm)
Power supply voltage
Current consumption
Control output
Answer-back output
Remote teaching input
Protective circuits
Response time
Sensitivity adjustment
Timer function *
Ambient illuminance
Ambient temperature
Ambient humidity
Insulation resistance
Dielectric strength
Vibration resistance
Shock resistance
Protective structure
Connection method
Weight (Packed state)
Case
Mate-
rial
Cover
Mounting Brackets Stainless steel (SUS304)
Accessories
* The OFF-delay timer can be reset by setting the switch.
Fiber Units
Sensing method
Features
Item
Sensing distance
Min. sensing object
Sensing object angle
Model
Short-range small spot
E32-S15-1
E32-S15-2
E32-S15L-1
Reflective model
Long-range
E32-S15L-2
10±3 mm (white paper, white glossy plastic
40x20 mm)
0.5-mm
Glossiness determination is possible at 4°
inclination from the mounting hole (at sensing
distance of 10 mm)
20±7 mm (white paper, white glossy plastic
40x20 mm)
2-mm
Glossiness determination is possible at 7°
inclination from the mounting hole (at sensing
distance of 20 mm)
Spot diameter
Ambient temperature
Ambient humidity
Permissible bending radius
Protective structure
Fiber length
Weight (Packed state)
Sensor case
Material
Sensor window
Fiber cladding
Approx. 2-mm dia./approx. 2-mm dia. (at sensing Approx. 15-mm dia./approx. 4-mm dia. (at sens-
distance of 10 mm)
ing distance of 20 mm)
Operating: -25°C to 55°C, Storage: -40°C to 70°C (with no icing or condensation)
Operating: 35% to 85%RH, Storage: 35% to 90% RH (with no condensation)
4 mm min.
IEC 60529 IP50
500 mm
Approx. 50 g
Heat-resistant ABS resin
transparent glass
urethane
Acrylics
1m
Approx. 60 g
500 mm
Approx. 80 g
1m
Approx. 90 g
A-200
Standard Photoelectric Sensors
Characteristic data (typical)
Glossiness vs. Operating Range (Typical) Glossiness vs. Angle (Typical)
E3X-NL11 with E32-S15-#
Relative glossiness (%)
140
Sensing object: 40
x
20 mm
120
100
80
60
White drawing paper
Set distance
E3X-NL11 + E32-S15-# (X direction)
Relative glossiness (%)
140
120
100
80
60
White drawing paper
White glossy plastic
Sensing object:
40
¥
20 mm
E3X-NL11 + E32-S15L-# (X direction)
Relative glossiness (%)
140
120
100
80
60
White drawing paper
Sensing object:
40
¥
20 mm
White glossy plastic
+
-
10mm
-
20mm
White glossy plastic
40
20
40
20
0
-
10
40
20
0
-
10
0
5
10
15
20
25
-
5
0
5
10
-
5
0
5
10
Set distance (mm)
Angle (˚)
Angle (˚)
E3X-NL11 with E32-S15L-#
Relative glossiness (%)
140
Sensing object: 40
¥
20 mm
120
100
80
Set distance
E3X-NL11 + E32-S15-# (Y direction)
Relative glossiness (%)
140
120
100
80
Sensing object:
40
¥
20 mm
E3X-NL11 + E32-S15L-# (Y direction)
Relative glossiness (%)
140
120
100
80
60
+
-
10mm
+
-
20mm
Sensing object:
40
¥
20 mm
White glossy plastic
White glossy plastic
White glossy plastic
60
White drawing paper
40
60
40
White drawing paper
White drawing paper
40
20
20
0
-
15
20
0
-
15
0
10
20
30
40
-
10
-
5
0
5
10
15
-
10
-
5
0
5
10
15
Set distance (mm)
Angle (˚)
Angle (˚)
Output Circuit Diagram
NPN output
Model
Output transis-
tor Status
Timing chart
Incident
Interrupted
Light
indicator ON
(orange) OFF
Output
ON
transistor
OFF
Load Operate
(e.g., relay)
Reset
Mode selec-
tion switch
Output circuit
T
Light ON
L ON
Operation
indicator
(orange)
Stability
indicator
(green)
Brown
Load
Black
Load
Control output
Orange
Answer-back output
(Between brown and
T: OFF delay timer black terminals)
The change for 0 or 40ms (fixed) is possible.
E3X-NL11
Incident
Interrupted
Light
indicator ON
(orange) OFF
Output
ON
transistor
OFF
Load Operate
(e.g., relay)
Reset
T
Teaching
indicator
(red/green)
Main
circuit
12 to 24
VDC
Blue
Pink
Remote
RUN/TEACH
input
Dark ON
D ON
Purple
Remote
teaching
input
(Between brown and
T: OFF delay timer black terminals)
The change for 0 or 40ms (fixed) is possible.
E3X-NL
A-201
E3X-NL
+
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