Omron E32-S15-1 Optical fiber glossy object sensor Datasheet

Optical Fiber Glossy Object Sensor
E3X-NL
E3X-NL
Utilization lightwave technology has innovated 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 longdistance type that can perform in-line standard detection.
Short-distance, small spot type
Short-range small spot
E32-S15-1/-2
E32-S15L-1/-2
Ideal for precision detection
and small object detection.
Resistant to object shake and
enables in-line standard detection.
Long-range
The teaching system ensures easy adjustment just by pressing the button.
● Adjustment man-hour saving
type requiring only a one-time
pressing of the button
● Teaching system only requires to push the button, ensuring sensitivity adjustment
without individual differences.
Long-distance type
10 ± 3 m
m
Small spot in 2 mm dia.
20 ± 7 m
m
Adopts the pulse-ON system that is insensitive 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
Detection of shrink tubes Transparent shrink
tubes can be detected stable.
Detection of sealing tape
Long-distance type
Detection of on-bottle labels insensitive to
distance variation or object inclination, enabling label detection on conveyor line.
Features
Principles for Glossiness Detection by FAO
Fuzzy Teaching Function Backs up Stable Detection
First, the light from a red LED passes through a polarizing filter so only the S wave is emitted.
If the detectable object is glossy, the S wave is reflected regularly and is transmitted as is to the Fiber Receiver 1.
If the detectable object is not glossy, there is more diffuse reflection, 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 receivers, and the variation in the glossiness is determined by comparing the two received signals.
Supported by the fuzzy teaching function if objects have no
difference in glossiness. If the glossiness difference goes below than the minimum sensing lev- Difference in
Difference in
light energy
el, the microprocessor in the grossiness
amplifier determines the discrimination means automatically.
Distinction means
Sensed by light energy difference
like an ordinary mark sensor.
Output
(When 2-point teaching is selected)
Received fiber 2
(P wave only)
FAO
Received fiber 1
(S wave only)
ion S
Emiss
Emitter
Lens
S wave: vertical
P wave: parallel
wave
Polarized filter
only
Sensing
object
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
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
Connection
method
Pre-wired type
Shape
E3X-NL
Amplifier Units
Model
33
E3X-NL11
59
32.2
Fiber Units
Red light
Sensor type
Shape
Sensing distance
Fiber length
Model
0.5 m
E32-S15-1
1m
E32-S15-2
0.5 m
E32-S15L-1
1m
E32-S15L-2
10 ± 3 mm
Reflective model
20 ± 7 mm
Accessories (Order Separately)
Mounting Brackets
Shape
Model
Quantity
Remarks
E39-L109
1
Can be used with the fiber unit
E32-S15-#. Mounting bracket variable in rotary angle (0°, 45°) for stable detection of transparent films
(double-refractive objects) on
glossy objects such as metal or
glass plates.
Model
Quantity
Remarks
1
Attached to the amplifier unit
E3X-NL11. Please place an
order when the protective cover
is damaged or lost.
Covers
Shape
E39-G9
E3X-NL
A-199
Rating/Performance
Amplifier Units
Item
Model
E3X-NL11
Light source (wave length) Red LED (680 nm)
Power supply voltage
12 to 24 VDC ±10%, ripple (p-p) : 10% max.
Current consumption
100 mA max.
Control output
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
Answer-back output
Load power supply voltage 30 VDC max., load current 100 mA max. (residual voltage 1 V max.)
Open collector output type (NPN output)
Protective circuits
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
Response time
Operation or reset: 1 ms max.
Sensitivity adjustment
Teaching system
Timer function *
OFF-delay fixed at 40 ms
Remote teaching input
Ambient illuminance
Incandescent lamp: 3,000 lux max. Sunlight 10,000 lux max.
Ambient temperature
Operating: -25°C to 55°C, Storage: -40°C to 70°C (with no icing or condensation)
Ambient humidity
Operating: 35% to 85% RH, Storage: 35% to 95% RH (with no icing or condensation)
Insulation resistance
20 M
Dielectric strength
1,000 VAC at 50/60 Hz for 1 minute
Vibration resistance
10 to 55 Hz, 1.5-mm double amplitude or 300 m/s2 (approx. 30G) for 2 hrs each in X, Y, and Z directions
Shock resistance
Destruction: 500 m/s2 for 3 times each in X, Y, and Z directions
min. at 500 VDC
Protective structure
IEC 60529 IP50 (with Protective Cover attached)
Connection method
Pre-wired models (standard length: 2 m)
Weight (Packed state)
Approx. 200 g
Material
Case
PBT (polybutylene terephthalate)
Cover
Polycarbonate
Mounting Brackets Stainless steel (SUS304)
Accessories
Mounting bracket, instruction manual
* The OFF-delay timer can be reset by setting the switch.
Fiber Units
Sensing method
Reflective model
Features
Item
Model
Long-range
Short-range small spot
E32-S15-1
E32-S15-2
E32-S15L-1
E32-S15L-2
20±7 mm (white paper, white glossy plastic
40x20 mm)
Sensing distance
10±3 mm (white paper, white glossy plastic
40x20 mm)
Min. sensing object
0.5-mm
2-mm
Sensing object angle
Glossiness determination is possible at 4°
inclination from the mounting hole (at sensing
distance of 10 mm)
Glossiness determination is possible at 7°
inclination from the mounting hole (at sensing
distance of 20 mm)
Spot diameter
Approx. 2-mm dia./approx. 2-mm dia. (at sensing Approx. 15-mm dia./approx. 4-mm dia. (at sensdistance of 10 mm)
ing distance of 20 mm)
Ambient temperature
Operating: -25°C to 55°C, Storage: -40°C to 70°C (with no icing or condensation)
Ambient humidity
Operating: 35% to 85%RH, Storage: 35% to 90% RH (with no condensation)
Permissible bending radius
4 mm min.
Protective structure
IEC 60529 IP50
Fiber length
500 mm
1m
500 mm
1m
Approx. 50 g
Approx. 60 g
Approx. 80 g
Approx. 90 g
Weight (Packed state)
Sensor case
Material
A-200
Heat-resistant ABS resin
Sensor window
transparent glass
Fiber cladding
urethane
Acrylics
Standard Photoelectric Sensors
Characteristic data (typical)
Glossiness vs. Operating Range (Typical) Glossiness vs. Angle (Typical)
120
120
Set distance
100
10mm
100
White glossy plastic
80
Sensing object:
40 ¥ 20 mm
Relative glossiness (%)
Sensing object: 40 x 20 mm
60
White glossy plastic
80
White drawing paper
40
20
5
10
15
20
-5
0
5
120
Set distance
100
80
White glossy plastic
60
140
Sensing object:
40 ¥ 20 mm
120
10mm
100
80
White glossy plastic
60
40
40
20
20
10
20
30
White drawing paper
-5
0
5
0
-15
40
10
E3X-NL11 + E32-S15L-# (Y direction)
+
140
+
120
Sensing object:
40 ¥ 20 mm
20mm
100
White glossy plastic
80
60
White drawing paper
0
80
Angle (˚)
Relative glossiness (%)
Relative glossiness (%)
Sensing object: 40 ¥ 20 mm
100
Angle (˚)
E3X-NL11 + E32-S15-# (Y direction)
140
20mm
0
-10
10
Set distance (mm)
E3X-NL11 with E32-S15L-#
-
White glossy plastic
20
0
-10
25
120
+
Sensing object:
40 ¥ 20 mm
40
20
0
140
60
60
White drawing paper
40
Relative glossiness (%)
E3X-NL11 + E32-S15L-# (X direction)
+
140
E3X-NL
E3X-NL11 + E32-S15-# (X direction)
140
Relative glossiness (%)
Relative glossiness (%)
E3X-NL11 with E32-S15-#
White drawing paper
White drawing paper
40
20
-10
-5
0
5
10
0
-15
15
-10
-5
0
5
Angle (˚)
Set distance (mm)
10
15
Angle (˚)
Output Circuit Diagram
NPN output
Model
Output transistor Status
Timing chart
Mode selection switch
Output circuit
Incident
Light ON
Interrupted
Light
indicator ON
(orange) OFF
Output
ON
transistor
OFF
Load Operate
(e.g., relay)
Reset
T
L ON
(Between brown and
T: OFF delay timer black terminals)
The change for 0 or 40ms (fixed) is possible.
Teaching
indicator
(red/green)
E3X-NL11
Incident
Interrupted
Dark ON
Light
indicator ON
(orange) OFF
Output
ON
transistor
OFF
Load Operate
(e.g., relay)
Reset
Operation
indicator
(orange)
Stability
indicator
(green)
Main
circuit
Brown
Load
Black
Load
Control output
Orange
Answer-back output
12 to 24
VDC
Blue
T
Pink
D ON
Purple
Remote
RUN/TEACH
input
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
Technical Guide
Glossiness
Glossiness
When light is applied to the sensing object, the reflected light
is generally a mixture of regular reflection components and
diffuse reflection components. Glossiness is directly proportional to the light intensity of the regular reflection components. In JIS, the glossiness of a glass plate surface having
1.567 reflectivity is defined 100 as the basis of glossiness.
Glossiness of Typical Object Sensed by E3X-NL11 + E32S15
(Example) Metal cylindrical object coated with transparent film
Metal cylindrical object
coated with
transparent film
45˚
Sensing head
1,000
The object can be sensed smoothly when the
angle of the sensing head is either 0˚ or 45˚.
Fuzzy Teaching Function
E3X-NL in two-point teaching operation will perform fuzzy
computation using the difference in glossiness and the difference in light energy between the two teaching points to determine the thresholds setting with E3X-NL. As shown in the
following table, if there is only a small difference in glossiness
but there is a large difference in light energy between the two
teaching points, the thresholds set with E3X-NL will be determined by the light energy values.
100
3
4
5
6
7
8
9
Taught
Difference
in glossiness
between two
teaching points
10
Object no.
Sensing of Transparent Objects with Rotating Fiber Unit
Mounting Bracket
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.
When E3X-NL senses these transparent films and transparent plastic objects on glossy background objects, such as
glossy paper or metals, E3X-NL will not sense these objects
smoothly in case of an incorrect angle of the sensor head. The
most suitable angle of the sensor head varies with the transparent object. The angle of the sensor head can be, however,
0° or 45° for the smooth sensing of such transparent objects
due to the characteristic of polarized light. There is no need
for the angle to be midway between 0° and 45°. E39-L109,
which is sold separately, is a mounting bracket that rotates to
angles of 0° or 45° and enables E3X-NL to sense such transparent objects smoothly with its sensing head set at 0° or 45°
without changing the sensing positive.
Taught
Difference
in light energy
between two
teaching points
Discriminating method
Large
Large
Large
Small
Discriminated by glossiness.
Small
Large
Discriminated by light energy.
Small
Discriminated by glossiness. A
teaching error will result if the difference in glossiness and that in
light energy are both less than the
sensing levels of E3X-NL.
Small
Discriminated by glossiness.
Large
2
Difference in glossiness
1. White paper
2. Brown corrugated cardboard
3. Paper gummed tape
4. White glossy paper (individual packages for OMRON
sensors)
5. Blue mount paper for label 10
6. Transparent label on blue
mount paper
7. Glossy plastic
8. Transparent glass (t=1 mm)
9. Gold printing ink (Gold part
of Cabin Mild Box)
1
10. Metal mirror surface (SUS
mirror surface)
Discriminated by glossiness
Fuzzy discrimination of glossiness and light energy
Discriminated by light energy
Small
Teaching error
Difference in light energy
Large
Countermeasures against Teaching Errors Resulted with
Transparent Labels on Sheets
The material of the sheets must not be too glossy.
Nomenclature:
Stability indicator
(green)
Teaching indicator
(red/green)
Operation mode
selector
A-202
Operation indicator
(orange)
Teaching button
Mode selector
Standard Photoelectric Sensors
Operation
Sensitivity setting
Pro
cedur
e
Setting
Operation
Pro
cedur
e
1
---
Locate the sensor head within the sensing
distance.
1
2
TEACH
RUN
TIMER
ON
OFF
Setting
TEACH
RUN
TIMER
ON
OFF
Object
Move the mode selector to the TEACH
position.
2
Teaching indicator ... Lit red
The built-in buzzer beeps once.
TEACH
3
Operation
Press the teaching button with one of the
sensing objects or the background object
located under the sensor for sensing.
Move the mode selector to the TEACH
position.
Press the teaching button once with a
sensing object located under the sensor
as shown in the following illustration.
E3X-NL
One-point teaching
Two-point teaching
3
TEACH
RUN
TIMER
ON
OFF
Move the mode selector to the RUN position. 1-point teaching setting is complete
as soon as the first object passes.
Teaching indicator ... Lit red
green
Lit
Base
4
L.ON
D.ON
Teaching indicator ... Lit red
The built-in buzzer beeps once.
Select the desired operation format with
the operation mode selector (L.ON/D.ON).
With an object absent (ground), press the
TEACHING button (second time).
Object
TEACH
Base
If teaching is OK
Teaching indicator ... Lit red
The built-in buzzer beeps once.
If teaching is NG
4
Lit green
Teaching indicator ... Lit red
Flickers
red
The built-in buzzer beeps 3 times.
Change the object position and setting
distance again and make setting in order of
1 to 4.
5
6
TEACH
RUN
TIMER
ON
OFF
L.ON
D.ON
E3X-NL
Move the mode selector to the RUN position. Sensitivity setting is complete.
Teaching indicator ... Lit green
guished
Extin-
Light Dark
Select the desired operation
format with the operation mode selector
(L.ON/D.ON).
A-203
Precautions
Correct Use
Fiber Units
Installation
Tightening Force
For the fiber unit installation, tighten it to the torque of 0.3 Nm
max.
● For adjustment
Two-point Teaching and One-point Teaching
Refer to the following information to select the most suitable
sensitivity setting method for the application.
Sensitivity
setting method
Fiber Connection and Disconnection
E3X-NL amplifier has a push lock. Connect or disconnect the
fibers to or from E3X-NL amplifier using the following procedures:
1. Connection
After inserting the fiber into the Amplifier, push the lock button
until a click sound is heard so that the fiber is securely connected.
Difference
Two-point teaching
One-point teaching
In general, use 2-point teaching. The fuzzy teaching function (refer to Technical Guide)
is activated to set the optimum
algorithms automatically,
drawing an operation level just
about between the two points
taught.
One-point teaching should
be performed for the sensing of different objects on a
single background object or
a single type of objects on a
variety of glossy background objects.
The operating level will be
set 15% above or below the
teaching point, depending
on the glossiness of the first
sensing object.
The fuzzy teaching function
is not activated for 1-point
Lock button
Fiber insertion mark
2. Disconnection
Ensure to press the push lock again to unlock before pulling
out the fiber, otherwise the fiber may be deteriorated.
(To maintain the fiber characteristics, remove the fiber after
making sure that the lock has been released.)
Locked
Unlocked
Lock button
3. The fiber must be locked or released in a temperature
range of -10° to 40°.
Since face-to-face isntallation of the fiber units may cause
mutual interference, mount them so that the optical axes of
the sensors are not opposed.
Selection of Teaching Point(s)
Two-point Teaching
If E3X-NL is used to sense sensing objects that are only a little
different in glossiness from the background object and the
sensing objects have color patterns, the difference in glossiness among the inks on the sensing objects may influence the
sensing operation of E3X-NL. Therefore perform two-point
teaching with E3X-NL at a place where E3X-NL can sense the
sensing objects smoothly while considering the characteristics of glossiness versus distance of E3X-NL if the sensing position of each of the sensing objects is different from each
other.
One-point Teaching
If E3X-NL is used to sense sensing objects different from
each other in glossiness on a single background object, perform one-point teaching with E3X-NL using the background
object. If E3X-NL is used to sense identical sensing objects on
a variety of glossy background objects, perform one-point
teaching with E3X-NL using one of the sensing objects.
Operation Level Setting and Control Output for One-point Teaching
Control output
(L·ON)
Glossiness
Vth selection
Monting the sensor
If two or more sensors are used, face-to-face installation of
the fiber units or the regularly reflected light from the sensing
object may cause mutual interference. At this time, adjust the
fiber units to be mounted at the angles where the light of each
sensor is not received by the fiber unit of the other sensor.
+15%
Teaching
Vth on
upper side
-15%
Vth on
lower side
ON
OFF
Glossiness
TEACH mode
RUN mode
+15%
Teaching
Vth on
upper side
-15%
Vth on
lower side
Control output
(L·ON)
Vth selection
ON
OFF
TEACH mode
A-204
RUN mode
Standard Photoelectric Sensors
(Remote 2-point teaching)
T1 *
H
Remote
RUN/TEACH input L
Remote
teaching input
Procedure
Operation
T2 * 1.0 to 1.3s T1
T2 1.0 to 1.3s
T1
E3X-NL
Remote teaching function
In remote teaching, the remote RUN/TEACH input signal is
used for teaching instead of the mode selector and the remote
teaching input signal is used instead of the teaching button.
H
L
H
0.5s
0.5s
0.5s
0.5s 0.5s 0.5s
Answer-back output
L
(If teaching is OK.)
1
Set the mode selector to RUN .
H
Answer-back output
L
The following signal conditions must be given as remote
teaching input conditions.
Brown +V
(Remote 1-point teaching)
T1 *
H
T2 * 1.0 to 1.3s
T1
Remote
RUN/TEACH input L
Purple Remote teaching input
Pink Remote
RUN/TEACH input
0.1s
* Note: T1 must be 20 ms minimum and T2 must be 500 ms minimum at the time of remote
teaching.
Black Control output
Orange Answer-back output
0.1s
(If teaching is NG.)
Remote
teaching input
H
L
H
0.5s
Answer-back output
Blue 0V
2
A If there is a teaching error after performing remote twopoint teaching with E3X-NL, try performing remote twopoint teaching again. If the remote RUN/TEACH input is
set from L to H after the teaching error, the thresholds set
with E3X-NL will not be refreshed.
B When remote teaching is not performed, cut the pink and
purple wires at the root of the cable or connect them to the
+ side (+V) of the power supply, and cut the orange wire
at the root of the cable or connect it to GND (0 V).
C About 1 s after remote teaching is over, the Sensor is
made ready to detect an object.
L
Miscellaneous
EEPROM Write Error
If a write error occurs (buzzer beeps, red and green teaching
indicators flicker at the same time, operation and stability indicators flicker) due to power-off, static electricity or other noise
in the teaching mode (until the initial operation level compensation completion of teaching without object), perform teaching again with the unit button.
Note: If a memory error occurs, the red and green teaching indicators flicker at
the same time and the stability indicator flickers, unlike the teaching error.
E3X-NL
A-205
Dimensions (Unit: mm)
Sensors
Amplifier Units
E3X-NL11
With Mounting Blanket Attached
Operation
indicator
Stability
indicator
Fiber Units
Short-distance, small spot type
E32-S15-#
10.4
Vinyl-insulated round cable of
4 dia. 6 cores conductor
cross-sectional area:
0.3 mm²; insulation diameter:
(A) * 1.04 mm Standard length: 2 m
10
Mounting Holes
29
Sensing surface
(8 x 15.6)
9.2
13.2±0.2
500 mm (E32-S15-1)
1 m (E32-S15-2)
29
16.5
31
15x15
7
13
Emitter
10
8.3
2-M3
Sensing head
13.2
Receiver
wo, 3.3 dia. mounting holes
8
Window
Optical fiber 6 dia.
Sleeve
10.8
* Mounting brackets can be used on the A side.
24.9
6.2
32.2
Three,
2.5 dia.
Fiber Units
Long-distance type
E32-S15L-#
59
33
8
32.5
10.7
Sensing head Mounting Holes
Sensing surface (18 x 35)
3.8
7
4.15
4.1
22.4
16±0.2
13
34.8
20.4
20
15.3
Receiver
2-M3
47
22
15x15
7
22±0.2
6.1
Two, 3.2 dia. mounting holes Stainless steel (SUS304)
8
Two, mounting holes
42
Mounting Holes
2-M3
500 mm (E32-S15L-1)
1 m (E32-S15L-2)
31
21.5
16±0.2
5.4
Window
3.4
22.4
13
Emitter
9.5
Two, 3.3 dia. mounting holes
Optical fiber 6 dia.
Sleeve
16±0.2
Accessories (Order Separately)
H-5
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. E248-E2-02-X
A-206
In the interest of product improvement, specifications are subject to change without notice.
Standard Photoelectric Sensors
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