Discontinued Mar. 30, 2009; Use E3Z-L Laser
E3L E3L
Laser Photoelectric Sensor E3L
Prewired DC Sensor Provides Long-
Distance Sensing of Objects as Small
as 0.1 mm
Detect small objects over longer sensing
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
SENSORS
Method of detection Through-beam Diffuse reflective
Sensing distance 10 m (32.8 ft) 2 m (6.56 ft) 20 to 50 cm
(7.9 to 19.7 in)
Light source Visible red Infrared Infrared
Laser class Class II Class I Class I
Part number NPN output E3L-2RC4 E3L-2E4-50 E3L-DS50E4-50
PNP output E3L-2B4-50
REPLACEMENT PARTS
Description Part number
Mounting bracket For through-beam type; supplied with E3L-24- 50, E3L-2RC4 E39-L6
For diffuse reflective type; supplied with E3L-DS50E4-50 E39-L5
Sensitivity adjuster knob E39-G1
Aperture with 0.85 mm dia. opening E39-S56
Apertures for
through-beam types
Aperture with 0.10 mm dia. opening E39-S55
2Discontinued Mar. 30, 2009; Use E3Z-L Laser
E3L
E3L
Specifications
Part number E3L-2RC4 (See Note.) E3L-24-50 E3L-DS50E4-50
Method of detection Through-beam type Diffuse reflective
Supply voltage 12 to 24 VDC, 10% max. ripple peak-to-peak
Current consumption 50 mA max. 40 mA max.
Sensing distance 10 m (32.8 ft) with no 2 m (6.56 ft) with 0.85 mm 20 to 50 cm (7.9 to 19.7 in)
aperture; 9 m (29.52 ft) with dia. aperture; 20 cm (7.9 in) with 2 x 2 mm (0.09 x 0.09 in)
3 mm aperture; 6 m (19.68 ft) with 0.1 mm dia. aperture white mat paper
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
Light source Visible red, pulse modulated Infrared, pulse modulated laser diode (=780 nm) 25 W
laser diode (=670 nm) max., Class I FDA/IEC
480 W max.,
Class II FDA/IEC
Detectable object type 4 mm (0.16 in) dia. object 0.5 mm (0.02 in) dia. object Opaque, translucent objects
minimum without aperture; minimum with 0.85 mm dia. 2 x 2 mm
With aperture - object aperture 0.1 mm (0.003 in)
minimum is same as dia. object minimum with
aperture size 0.10 mm dia. aperture
Diameter of projected spot With 4 mm dia. emitter, no aperture, at a distance of With 4 mm dia. emitter, at a
2 m (6.56 ft), the incident light is 20 mm (0.79 in) in diameter distance of 50 cm (19.7 in)
from the emitter, the incident
light is 2 mm (0.08 in) in dia.
Directional angle Emitter: 2 max., Receiver: 20 max.
Operation mode Light-ON/Dark-ON, wire selectable
Light-ON: + red, - black; Dark-ON: - red, + black
Sensitivity adjustment Adjustable
Mutual interference protection Standard level
Control DC Type NPN type, open collector NPN type, constant current source (E3L-E4-50)
output solid- PNP type, open collector (E3L-2B4-50)
state
Max. load NPN type: 100 mA max. 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.
Response time 1 ms max. (both ON and OFF) 3 ms max. (both ON and OFF)
Alarm DC Type NPN (E3L-E4-50); PNP (E3L-2B4-50)
output solid-
Max. load 50 mA, 24 VDC
state
Residual voltage 1 V
Response time Output turns ON after 100 ms delay when light receiving signal level is within unstabe
zone.
Circuit Output short- Provided
protection circuit
DC power supply Provided
reverse polarity
Indicators Light Incident (red LED), Stable Operation (green LED)
Materials Lens Plastic, PMMA
Case 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