E3SA E3SA
2
Analog Output Proportional to Light
Received, Ideal For Inspection and
Measurement
■Analog object detection ideal for position,
size, color and surface characteristics
■Both analog and NPN transistor ON/OFF
outputs available simultaneously
■Fast, 1 ms response time
■Selectable Light-ON/Dark-ON operation
■4-turn sensitivity adjustment for precise
control
■2 m (6.56 ft) cable
Ordering Information
Method of detection Through-beam Retroreflective Diffuse reflective Mark sensor
Sensing 2 m (6.56 ft), 20 to 50 cm 5 to 50 cm 2 to 5 cm
distance 30 cm (11.81 in) (7.87 to 19.68 in) (1.97 to 19.68 in) (0.79 to 1.97 in)
with E39-S1 slits
Part number E3SA-2C43A E3SA-RS50C43A E3SA-DS50C43A E3SA-VS5RC43A
■SENSORS
Analog Photoelectric Sensor E3SA
Description Part number
Slits for E3SA-2C43A through-beam type help detect transparent and small objects E39-S1
(0.5, 1, 2 and 4 mm slits; mounting hardware)
■ACCESSORIES
Description Part number
Reflector (supplied with E3SA-RS50C43A retroreflective sensor) E39-R1
Mounting bracket (supplied with each sensor) E39-L52
■REPLACEMENT P ARTS
3
E3SA E3SA
Specifications
Part number E3SA-2C43A E3SA-RS50C43A E3SA-DS50C43A E3SA-VS5RC43A
Method of detection Through-beam Retroreflective Diffuse reflective Mark sensor
Supply voltage 12 to 24 VDC
Operating voltage 10.8 to 26.4 VDC; ripple 10% max. peak-to-peak
Current consumption Emitter: 60 mA max. 80 mA max.
Receiver: 20 mA max.
Sensing distance 2 m (6.56 ft) 20 to 50 cm 5 to 50 cm 2 to 5 cm
30 cm (11.81 in) (7.87 to 19.68 in) (1.97 to 19.68 in) (0.79 to 1.97 in)
with E39-S1 slits with E39-R1 reflector with 10 x 10 cm with 3 x 3 mm
(supplied) (3.94 x 3.94 in) (0.12 x 0.12 in) black
white mat paper mark on white background
Light source (continuous) Red LED 660 nm Polarized infrared LED Infrared LED 950 nm Red LED 680 nm
Light source disable input Provided Not provided Not provided Not provided
(check input) Contact closure or
high solid-state input
shorts power to LED;
4 V max., 2.3 mA min.
source current
Detectable object type Opaque materials Opaque materials Opaque and transparent materials
Operation mode Light-ON/Dark-ON, switch selectable
Sensitivity Adjustable; 4-turn potentiometer
Operating point Adjustable; 4-turn potentiometer
Control Type Analog 4 to 20 mA with 300
Ω max. load impedance; 2.45 to 4 mA minimum, 20 to 21.55 mA maximum
output 1 to 5 VDC using 250
Ω resistor supplied. See “Connections” for conversion.
On/Off NPN, open collector; max., load 100 mA, 30 VDC
Response On 1 ms max.
time Off 1 ms max.
Variation due to temperature ±0.3% of full scale/°C
fluctuations
Circuit Output short- Provided
protection circuit
DC power supply Provided
reverse polarity
Indicators Emitter: Light Incident (red LED)
Power On (red LED) Output Operation (yellow LED)
Receiver: Light
Incident (red LED)
Output Operation
(yellow LED)
Materials Lens Plastic
Case Plastic
Cable sheath Plastic
Mounting Side surface mount with two through holes. E39-L52 bracket and mounting hardware supplied.
Connections Prewired Emitter: 4-conductor cable, 2 m (6.56 ft) length
2-conductor cable,
2 m (6.56 ft) length
Receiver:
5-conductor cable,
2 m (6.56 ft) length
Weight Emitter: 140 g (5 oz) 140 g (5 oz)
Receiver: 140 g (5 oz)
Enclosure IEC 144 IP66
Ambient Operating -10°C to 55°C (14°F to 131°F)
temperature Storage -30°C to 70°C (-22°F to 159°F)
E3SA E3SA
4
■OUTPUT CIRCUIT DIAGRAM
Through-Beam Type E3SA-2C43A Polarized Retroreflective Type E3SA-RS50C43A
Diffuse Reflective Type E3SA-DS50C43A
Mark Sensor E3SA-VS5RC43A
Fiber-Optic Amplifier E3XA-CC4A
Note: IEC colors are shown in parentheses.
■TIMING CHARTS
Through-Beam Type E3SA-2C43A Polarized Retroreflective Type E3SA-RS50C43A
Diffuse Reflective Type E3SA-DS50C43A
Mark Sensor E3SA-VS5RC43A
Fiber-Optic Amplifier E3XA-CC4A
Note: The light source operates (ON) when the external check
input is open; it does not operate (OFF) when the external
check input is ON (Low).
Input light quantity
External check input
Analog output
High
Low
H
L
20 mA
4 mA
Logic
output
L-ON
(output transistor)
D-ON
(output transistor)
ON
OFF
ON
OFF
(light source)
(receiver)
Logic output
Threshold level
Input light quantity
Analog output*
LIGHT indicator
High
Low
20 mA
4 mA
Logic
output
L-ON
(output transistor)
D-ON
(output transistor)
ON
OFF
ON
OFF
12 mA
Analog output
Upper limit: 21.55 mA
Lower limit: 2.45 mA
Bright
Dark
*
With operating point adjuster
Set to about 12 mA
With operating point adjuster
set to about 12 mA
5
E3SA E3SA
■OPERATING RANGE
Through-Beam Type
E3SA-2C43A without slit Polarized Retroreflective Type
E3SA-RS50C43A
Operating position (cm)
Sensing distance (cm)
Operating position (cm)
Where, VCC = 12 V,
IOUT = 4 mA,
with adjuster set to
rated sensing
distance and output
to 20 mA
Sensing distance (m) Sensing distance (cm)
with E39-R3 reflector
Diffuse Reflective Type
E3SA-DS50C43A
Where, VCC = 12 V,
IOUT = 4 mA,
with adjusters set to
rated sensing
distance and output
to12 mA
Engineering Data
Through-Beam Type E3SA-2C43A Polarized Retroreflective Type E3SA-RS50C43A
Diffuse Reflective Type E3SA-DS50C43A
Mark Sensor E3SA-VS5RC43A
Note: IEC colors are shown in parentheses.
Connections
For voltage output (1 to 5 VDC)
To convert current output into voltage output (1 to 5 VDC), use
the 250-ohm resistor, supplied with the sensor.
Light source Receiver
Sync (CLOCK) Sync
Light blue (Orange/violet)
Black (Blue)
Red (Brown)
Gray
(Pink)
12 to 24 VDC
External
diagnosis
input
Red (Brown)12 to 24 VDC
Black (Blue)
White (Black)
Orange (White)
0 V
Analog output
Logic output
12 to 24 VDC
0 V
Analog output
Logic output
Red (Brown)
Black (Blue)
White (Black)
Orange (White)
OUT
4 to 20 mA
1 to 5 V
0 V
12 to 24 V
Voltage output
VCC = 12 V
Volume (setting) max.
IOUT=6mA
IOUT=10mA
IOUT=20 mA
IOUT=16 mA
E3SA E3SA
6
■DISTANCE vs. ANALOG OUTPUT CURRENT
Through-Beam Type
E3SA-2C43A without slit Through-Beam Type
E3SA-2C43A with slit
Analog output (mA)
Sensing distance (cm)
Analog output (mA)
Sensing distance (m)
Analog output (mA)
Sensing distance (m)
Polarized Retroreflective Type
E3SA-RS50C43A
Diffuse Reflective Type
E3SA-DS50C43A (white object) Diffuse Reflective Type
E3SA-DS50C43A (black object)
Analog output (mA)
Sensing distance (cm)
Analog output (mA)
Sensing distance (cm)
Analog output (mA)
Sensing distance (cm)
Mark Sensor Type E3SA-VSRC43A
Adjuster at
max. position
Adjuster at max. position
Adjuster at center
Adjuster at center
Adjuster at min. position
Adjuster at min. position
Rated sensing
distance Rated sensing
distance
Vcc = 12 V
Adjuster: MAX.
Vcc = 12 V
Adjuster: MAX.
Adjuster: MID.
Adjuster: MIN.
Adjuster at max. position
Adjuster at center
Adjuster at min. position
Adjuster at
max. position
Adjuster at center
Adjuster at min. Position
Rated sensing
distance
Sensing object: black paper (10 x 10 cm)
Sensing object: black paper (10 x 10 cm)
20
15
10
5
00 50 100 120
Sensing distance: 50 cm
I
OUT
= 12.0 mA
20
15
10
5
00 5 10 20 30
2.0
1.8
1.6
1.4
1.2
1.0
0.8
00 0.2 0.4 0.6 0.8 1.0 1.2
Sensing distance: 5 cm
I
OUT
= 12.0 mA
Spot
White Paper
Width of Mark
Color: Black
■OBJECT SIZE vs. OUTPUT
Diffuse Reflective Type
E3SA-DS50C43A Diffuse Reflective Type
E3SA-DS50C43A
Output ripple (mA)
Width of mark (mm)
Analog output (mA)
Area of sensing object (cm2)
Analog output (mA)
Area of sensing object (cm2)
Mark Sensor Type E3SA-VSRC43A
7
E3SA E3SA
Output ripple (mA)
Sensing diameter (mm)
Polarized Retroreflective Type
E3SA-RS50C43A
24
20
16
12
8
4
0024681012
Vcc = 12 V
Volume (setting) max.
Reflector side
Center of Sensor and
Reflector
Sensor side
■LIGHT INTERRUPTING CHARACTERISTICS
Through-Beam Type E3SA-2C43A
Without Slit, in Y Direction Through-Beam Type E3SA-2C43A
Without Slit, in X Direction
Analog output (mA)
(Optical axis position)
Moving distance of sensing object l (mm)
Analog output (mA)
(Optical axis position)
Moving distance of sensing object l (mm)
Sensing object
Light source Receiver
Adjuster: MID.
Adjuster: MIN. Adjuster: MAX.
Sensing
object moving
direction
direction
direction
Optical axis
Sensing object
Light source Receiver
Adjuster: MID.
Adjuster: MIN.
Adjuster: MAX.
Sensing
object
moving direction
X direction
Y direction
Optical axis
2 m
Sensing object
Light source Receiver
Adjuster: MID.
Adjuster: MIN.
Adjuster: MAX.
Sensing
object moving
direction
Optical axis
X direction
Y direction
Slit length: 1 x 10 mm
Sensing
object moving
direction
Optical axis
X direction
Y direction
Sensing object
Light source Receiver
Slit length: 1 x 10 mm
Vcc = 12 V
l = 30 cm
Adjuster: MAX.
Through-Beam Type E3SA-2C43A
With Slit, in Y Direction Through-Beam Type E3SA-2C43A
With Slit, in X Direction
Analog output (mA)
(Optical axis position)
Moving distance of sensing object l (mm) (Optical axis position)
Moving distance of sensing object l (mm)
Analog output (mA)
30
cm
E3SA E3SA
8
■MUTUAL INTERFERENCE
If sensors are installed side by side,
provide at least the minimum distance
shown in the shaded region of the
following charts between sets of fibers
to prevent mutual interference.
Through-Beam Type
E3SA-2C43A Without Slit
Sensing distance X (cm)
Sensing distance X (cm)
Through-Beam Type
E3SA-2C43A With Slit
■INFLUENCE OF EXTERNAL LIGHT INTERFERENCE
Through-Beam Type
E3SA-2C43A Without Slit Through-Beam Type
E3SA-2C43A With Slit
Analog output ripple current (mA)
Distance from fluorescent lamp l (cm)
Analog output ripple current (mA)
Distance from fluorescent lamp l (m)
Analog output ripple current (mA)
Distance from fluorescent lamp l (m)
Retroreflective Type
E3SA-RS50C43A
Diffuse Reflective Type
E3SA-DS50C43A Diffuse Reflective Type
E3SA-VS5RC43A
Analog output (mA0
Analog output (mA0
Vcc = 12 V
Adjuster: MAX.
Vcc=12 V
Angle of sensor in respect to
fluorescent lamp ϕ = 0°
Fluorescent lamp
Distance from fluorescent lamp l (m) Distance from fluorescent lamp l (m)
Rated value
Fluorescent
lamp
Fluorescent
lamp
Angle of sensor in respect to
fluorescent lamp ϕ = 0 °
Angle of sensor in respect to
fluorescent lamp ϕ = 0°
Rated value
Fluorescent
lamp
0=0° at center of lamp
0=0° at edge of lamp
0=15° at end
and center of lamp
Fluorescent lamp
at center of lamp
at end of lamp
0.3 mA
0.1 mA
9
E3SA E3SA
■TRANSPARENCY AND COLOR vs. ANALOG OUTPUT
Through-Beam Type E3SA-2C43A
Without Slit
Output current (%) (20.0 mA as basis)
T ransparency (%) (full incidence as basis)
ND filter
Light source Receiver
Vcc = 12 V
l = 2 m
Adjuster: IOUT - 20.0 mA
■COLOR MARK DETECTION CAPABILITY
Mark Sensor Type E3SA-VS5RC43A
Changing ratio (%)
Vcc = 12 V
Adjuster: MID.
(IOUT = 18 mA on
white N9.5)
Changing ratio (%)
Temperature fluctuation
0.3%/°C, 10x10 cm
Infrared light
Cable (4 dia. 91/0.05 dia., 5 conductors)
Standard length: 2 m
Sheath color: gray
Dimensions
Unit: mm (inch)
Through-Beam Type E3SA-2C43A Sensitivity adjuster
Operating point adjuster Mode selector switch (D-ON/L-ON)
Mounting holes
LIGHT indicator
(red)
OPERATION indicator
(yellow)
2 m
Diffuse Reflective Type E3SA-DS5C43A
T wo M3
E3SA E3SA
10
Operation
■NOMENCLATURE
Cable (3.8 dia. 91/0.05 dia., 4 conductors)
Standard length: 2 m
Sheath color: gray
Retroreflective Type E3SA-RS50C43A (included E39-R1 reflector)
Diffuse Reflective Type E3SA-DS50C43A
Mark Sensor E3SA-VS5RC43A
T wo M3
Mounting holes
LIGHT indicator (red) OPERATION indicator
(yellow)
■REFLECTORS
E39-R1 Reflector supplied with each
E3SA-RS50C43A Retroreflective Sensor
Operation indicator (yellow)
Light indicator
Operating point controlOperation mode selector
(D-ON/L-ON)
Sensitivity control
11
E3SA E3SA
Using Indication:
Mount the emitter or reflector, then loosely
mount the receiver. Aim the receiver to get
the maximum brightness on the Light
Indicator. Adjust the Sensitivity Control
(gain) to maximize the brightness. Then
securely mount the receiver to maintain
the position.
Using Analog Output:
Use an ammeter to measure the milliamp
current output from the sensor. Mount the
emitter or reflector, then loosely mount the
■ADJUSTMENTS
For Through-Beam and Retroreflective Sensors
receiver. Aim the receiver to get the
maximum analog output (20 mA). Move
the receiver up and down, left to right to
determine the area that produces
maximum output. Aim the receiver in the
center of that area then securely mount
the receiver to maintain the position.
Adjust the gain using the Sensitivity
Control to produce 20 mA or the desired
maximum current output.
To ensure proper adjustment for best
sensitivity, be certain that the current has
not become saturated above the 20 mA
maximum limit. This makes normal
detection impossible because the
deviation of output at saturation becomes
too small for differentiation.
The Easy Method:
The simple way is to use the Operation
Point control. Set the operating point at 20
mA (fully clockwise), then search for the
position that turns on the Operation
Indicator.
Using Indication:
Securely mount the diffuse reflective or
mark detecting sensor, or diffuse reflective
fiber-optic sensing head. Place the object
to be detected at the position where
detection should occur. Adjust the
Sensitivity Control (gain) to the point
where the Operation Indicator lights. Then
fine-tune the gain to maximize the
brightness of the Light Indicator.
For Diffuse Reflective Sensors
Using Analog Output:
Securely mount the diffuse reflective or
mark detecting sensor, or diffuse reflective
fiber-optic sensing head. Use an ammeter
to measure the milliamp output from the
sensor or E3XA amplifier. Place the object
to be detected at the position where
detection should occur. Adjust the gain
using the Sensitivity Control to produce
20 mA or the desired maximum current
output.
To ensure proper adjustment for best
sensitivity, be certain that the current has
not become saturated above the 20 mA
maximum limit. This makes normal
detection impossible because the
deviation of output at saturation becomes
too small for differentiation.
Do not allow direct exposure of fluores-
cent light on the receiver (through-beam
types) or emitter/receiver (reflective
types). This may have adverse af fects on
the analog output current.
When mounting the sensor, keep the
angle formed between the light of the
fluorescent lamp and the optical axis of
the sensor at more than 15 degrees.
■INFLUENCE OF FLUORESCENT LIGHTING
CORRECT INCORRECT
Analog Output
Set the analog output by allowing a
hysteresis of more than 2% full scale
(about 0.3 mA), also taking into account
the effects of external fluctuations. This
effect is already taken into account when
using S3A-D and S3A2 analog sensor
controllers.
■AMPLIFIER OUTPUTS
Logic (On/Off) Output
The differential for the discrete On/Off
logic output is set at about 2 mA. Output
short-circuit protection is provided.
E3SA E3SA
OMRON ELECTRONICS LLC OMRON CANADA, INC.
One East Commerce Drive 885 Milner Avenue
Schaumburg, IL 60173 Scarborough, Ontario M1B 5V8
1-800-55-OMRON 416-286-6465
Cat. No. CEDSAX4 11/01 Specifications subject to change without notice. Printed in the U.S.A.
OMRON ON-LINE
Global - http://www.omron.com
USA - http://www.omron.com/oei
Canada - http://www.omron.com/oci
