Discontinued Mar. 30, 2009; Use E3Z-L Laser
E3L
E3L
Laser Photoelectric Sensor
Prewired DC Sensor Provides Long-
Distance Sensing of Objects as Small
as 0.1 mm
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Detect small objects over longer sensing
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E3L
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distances with highly accurate positioning
Attachable apertures allow detection down
to 0.1 mm diameter
Alarm output signals deteriorating detec-
tion conditions due to improper alignment
or dust contamination
Class I (FDA/IEC) laser product E3L-50,
requires no additional protective equip-
ment
Visible spot through-beam version aids in
critical alignment applications
Ordering Information
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SENSORS
Method of detection
Sensing distance
Light source
Laser class
Part number
NPN output
PNP output
Through-beam
10 m (32.8 ft)
Visible red
Class II
E3L-2RC4
—
2 m (6.56 ft)
Infrared
Class I
E3L-2E4-50
E3L-2B4-50
Diffuse reflective
20 to 50 cm
(7.9 to 19.7 in)
Infrared
Class I
E3L-DS50E4-50
—
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REPLACEMENT PARTS
Description
Mounting bracket
Sensitivity adjuster knob
Apertures for
through-beam types
Aperture with 0.85 mm dia. opening
Aperture with 0.10 mm dia. opening
For through-beam type; supplied with E3L-2 4- 50, E3L-2RC4
For diffuse reflective type; supplied with E3L-DS50E4-50
Part number
E39-L6
E39-L5
E39-G1
E39-S56
E39-S55
2
Discontinued Mar. 30, 2009; Use E3Z-L Laser
E3L
Specifications
Part number
Method of detection
Supply voltage
Current consumption
Sensing distance
E3L-2RC4
(See Note.)
Through-beam type
12 to 24 VDC,
±10%
max. ripple peak-to-peak
50 mA max.
10 m (32.8 ft) with no
aperture; 9 m (29.52 ft) with
3 mm aperture; 6 m (19.68 ft)
with 2 mm aperture; 3 m
(9.84 ft) with 1 mm aperture;
2 m (6.56 ft) with 0.85 mm
aperture; 1 m (3.28 ft) with
0.5 mm aperture; 30 cm
(11.81 in) with 0.1 mm
aperture
Visible red, pulse modulated
laser diode (λ=670 nm)
480
µW
max.,
Class II FDA/IEC
4 mm (0.16 in) dia. object
minimum without aperture;
With aperture - object
minimum is same as
aperture size
2 m (6.56 ft) with 0.85 mm
dia. aperture; 20 cm (7.9 in)
with 0.1 mm dia. aperture
40 mA max.
E3L-2 4-50
E3L-DS50E4-50
Diffuse reflective
E3L
20 to 50 cm (7.9 to 19.7 in)
with 2 x 2 mm (0.09 x 0.09 in)
white mat paper
Light source
Infrared, pulse modulated laser diode (λ=780 nm) 25
µW
max., Class I FDA/IEC
Detectable object type
0.5 mm (0.02 in) dia. object
minimum with 0.85 mm dia.
aperture 0.1 mm (0.003 in)
dia. object minimum with
0.10 mm dia. aperture
Opaque, translucent objects
2 x 2 mm
Diameter of projected spot
With 4 mm dia. emitter, no aperture, at a distance of
2 m (6.56 ft), the incident light is 20 mm (0.79 in) in diameter
With 4 mm dia. emitter, at a
distance of 50 cm (19.7 in)
from the emitter, the incident
light is 2 mm (0.08 in) in dia.
Directional angle
Operation mode
Sensitivity adjustment
Mutual interference protection
Control
output
DC
solid-
state
Type
Max. load
Emitter: 2° max., Receiver: 20° max.
Light-ON/Dark-ON, wire selectable
Light-ON: + red, - black; Dark-ON: - red, + black
Adjustable
Standard level
NPN type, open collector
NPN type: 100 mA max.
NPN type, constant current source (E3L-
PNP type, open collector (E3L-2B4-50)
E4-50)
NPN type: Load (relay, sink) logic: 80 mA max.
Voltage (source) logic: 1.5 to 3 mA
PNP type: Load (relay, source) logic: 80 mA max.
3 ms max. (both ON and OFF)
Response time
Alarm
output
DC
solid-
state
Type
Max. load
Residual voltage
Response time
Circuit
protection
Output short-
circuit
DC power supply
reverse polarity
Indicators
Materials
Lens
Case
1 ms max. (both ON and OFF)
NPN (E3L-
50 mA, 24 VDC
1V
E4-50); PNP (E3L-2B4-50)
Output turns ON after 100 ms delay when light receiving signal level is within unstabe
zone.
Provided
Provided
Light Incident (red LED), Stable Operation (green LED)
Plastic, PMMA
Diecast zinc
(This table continues on the next page)
Note: In consideration of vibration and other environmental and mounting conditions, the sensing distance values for the E3L-2RC4 are
very conservative. If these conditions can be minimized, longer sensing distances are possible. Please see excess gain and operating
range curves for more accurate sensing ranges.
3
Discontinued Mar. 30, 2009; Use E3Z-L Laser
E3L
E3L
Specifications Table - continued from previous page
Part number
Mounting
E3L-2RC4
E3L-2 4-50
E3L-DS50E4-50
Two side mount M4 threaded
holes or mounting bracket
E39-L5 (supplied)
2 m (6.56 ft) 4 conductor
cable
Two side mount M4 threaded holes or
mounting bracket E39-L6 (supplied)
Prewired
2 m (6.56 ft); 3 conductor
cable for emitter, 3
conductor cable for receiver
Emitter: 160 g (5.6 oz)
Receiver: 175 g (6.2 oz)
UL
NEMA
IEC 144
Ambient
Operating
Storage
—
NEMA 4
IP67
-10°C to 50°C (14°F to 122°F) with no icing
-30°C to 70°C (-22°F to 158°F)
2 m (6.56 ft); 3 conductor
cable for emitter, 4
conductor cable for
receiver
Connections
Weight
Enclosure
250 g (8.8 oz)
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OUTPUT CIRCUIT DIAGRAMS
Sensor
NPN
output
type
*
Through-beam
Diffuse reflective
* Alarm (orange) wire not present for E3L-2RC4
The indicator can be wired for Light Incident by connecting the black
wires together as shown in the dotted line. For Power indication, connect
the emitter's black wire to the receiver's blue wire.
PNP
output
type
The indicator can be wired for Light Incident by connecting the black
wires together as shown in the dotted line. For Power indication, connect
the emitter's black wire to the receiver's brown wire.
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TIMING CHARTS
(between brown
and black)
(between blue
and black)
(between blue
and black)
(between brown
and black)
4
Discontinued Mar. 30, 2009; Use E3Z-L Laser
E3L
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EXCESS GAIN
Through-beam Type E3L-2 4-50
Through-beam Type E3L-2RC4
Diffuse Reflective Type
E3L-DS50E4-50
E3L
Slit 0.5, 1, 2, 3 mm dia.
Excess gain ratio
Excess gain ratio
Slit 0.85 mm dia.
Slit 0.1 mm dia.
Sensing distance (cm)
Sensing distance (m)
Excess gain ratio
Sensing distance (cm)
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OPERATING RANGE
Through-beam Type E3L-2 4-50
without aperture
Through-beam Type E3L-2 4-50
with 0.85 mm diameter aperture
Through-beam Type E3L-2 4-50
with 0.1 mm diameter aperture
Parallel offset distance Y (mm)
Parallel offset distance Y (mm)
Sensing distance X (cm)
Sensing distance X (cm)
Parallel offset distance Y (mm)
Sensing distance X (cm)
Diffuse Reflective Type
E3L-DS50E4-50
Through-beam Type E3L-2RC4
without aperture
Through-beam Type E3L-2RC4
with 1.0 mm diameter aperture
Parallel offset distance Y (mm)
Parallel offset distance Y (mm)
Sensing distance X (cm)
with 2 x 2 mm
white mat paper
Sensing distance X (m)
Parallel offset distance Y (mm)
Sensing distance X (m)
5
Discontinued Mar. 30, 2009; Use E3Z-L Laser
E3L
E3L
Through-beam Type E3L-2RC4
with 0.85 mm diameter aperture
Through-beam Type E3L-2RC4
with 0.5 mm diameter aperture
Through-beam Type E3L-2RC4
with 0.1 mm diameter aperture
Parallel offset distance Y (mm)
Parallel offset distance Y (mm)
Sensing distance X (m)
Sensing distance X (m)
Parallel offset distance Y (mm)
Sensing distance X (m)
Dimensions
Unit: mm (inch)
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THROUGH-BEAM TYPE E3L-2 4-
Sensitivity adjuster
Cable
2 m length
Indicators
(for receiver only)
Lens
diameter
Mounting holes
22.2
Mounting bracket
E39-L6 supplied
Two M4
hexagonal bolts
Note: Mounting bracket E39-L6
can be attached to surface "A".
6
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