Banner MULTI-BEAM Series - Manual

MULTI-BEAM ®
Printed in USA
Hookup Information
Functional Schematic, LS4 Light Screen Systems
P/N 39673
LS4EL/RL Light Screen Systems offer a simple, economical, but highly
reliable means of sensing objects moving at high speed through an area (or
"window"). Each system consists of two self-contained units: an emitter and
a receiver. Emitters contain four infrared light sources aligned in a row and
strobed (turned "on" one at a time) in a specific sequence and at a high
frequency. Receivers contain a matching array of phototransistors. The
height of the array is 3.5 inches (90 mm). The LS4RL receiver may be placed
18 to 90 inches (45,7 to 228,6 cm) opposed from the LS4EL emitter. This
produces a "curtain" of light 5 to 6 inches high and as wide as the separation
distance between the emitter and receiver.
The smallest object that can be detected depends upon the location of the
object within the curtain. Midway between emitter and receiver, an object 1
inch (25 mm) or larger in cross section can be detected anywhere within a 5
inch (127 mm) high window. Near the emitter or receiver, an object of 1.5
inches (38 mm) or larger in cross section can be detected anywhere within a
6 inch (152 mm) high window.
The light from the emitter is modulated to minimize sensitivity of the system
to ambient light. An indicator LED on the emitter lights whenever power is
applied. The receiver has an alignment LED which lights whenever the beam
is broken. Models are available with either attached cable or integral quick
disconnect (QD) fitting. The receiver output interfaces directly with dc loads
or circuits up to 30V dc, and offers both sinking (NPN) and sourcing (PNP)
output transistors. Outputs are energized continuously while the beam is
broken. A 5 millisecond pulse stretcher (OFF delay) is included to improve
interfacing reliability.
View of connector on sensor (male pins)
Pin #1 (Black): sourcing output (receiver only)
Pin #2 (Blue): common (dc neg.) (emitter and receiver)
Pin #3 (Brown): +10 to 30V dc (emitter and receiver)
Pin #4 (White): sinking output (receiver only)
NOTE: Emitters have no connection to pins #1 and #4.
Quick disconnect model emitter and receiver both use Banner mini-type mating
cable model MBCC-412 (p/n 25226, length 12 feet). Model MBCC-430 is also
available (p/n 29951, length 30 feet). Order cable separately.
Specifications
MODELS: One receiver and one emitter per system.
LS4EL (p/n 39679), emitter, 6-1/2 foot (2 m) cable
LS4RL (p/n 39680), recevier, 6-1/2 foot (2 m) cable
LS4ELQ (p/n 38429), emitter, 4-pin mini-style QD
LS4RLQ (p/n 38430), receiver, 4-pin mini-style QD
Use either emitter with either receiver.
SUPPLY VOLTAGE: 10 to 30 V dc at 35mA (for
LS4EL(Q) and 25 mA for LS4RL(Q), exclusive of load.
OUTPUT CONFIGURATION: one current sinking
(NPN) and one current sourcing (PNP) open collector
transistor.
OUTPUT RATING: 125mA continuous, either output.
OUTPUT PROTECTION: short-circuit and reverse-
polarity protected.
RANGE: 18 to 90 inches (45,7 to 228,6 cm).
RESOLUTION: 1 inch to 1.5 inches, depending upon the
location of the object within the curtain (see text, above).
RESPONSE TIME: 1 millisecond. Successive parts must
have at least 10 milliseconds separation.
CONSTRUCTION: reinforced VALOX ® housing; acrylic
lens. Lens fully gasketed. NEMA 1, 2, 3, 12, and 13.
Stainless steel hardware.
CABLING: 6-1/2 foot (2 m) attached cable or 4-pin mini-
style quick disconnect fitting. See model listing (above).
OPERATING TEMPERATURE RANGE:
0 to 50 degrees C (32 to 122 degrees F).
LS4EL/RL
Light Screen Systems
Rev. A
May 2013