Red Lion DC POWERED - Manual

1

RETROREFLECTIVE, PROXIMITY (DIFFUSE) & OPPOSED BEAM
PAIRS

MODULATED LED LIGHT BEAMS FOR IMMUNITY TO AMBIENT
LIGHT

+10 to +30 VDC OPERATION WITH REVERSE POLARITY
PROTECTION

NPN & PNP (CURRENT SINKING AND SOURCING ) OUTPUTS

RUGGED VALOX HOUSING MEETS NEMA 1, 2, 3, 3S, 4, 4X, 12,
& 13 STANDARDS

LED SIGNAL STRENGTH INDICATOR MAKES ALIGNMENT EASY
& PROVIDES INDICATION OF LIGHT SIGNAL DETERIORATION
DESCRIPTION
These compact self-contained and powerful Retroreflective, Proximity
(Diffuse) and Opposed Beam Pair Photo-electric Sensors provide application
flexibility in counting, positioning and object detection. All units are
interchangeable with conventional 18 mm threaded barrel-type photo-electrics
and inductive proximity sensors. Their small 2-1/8" x 1-1/4" x 1/2" size, in
addition to various mounting options, greatly increases alignment ease and
application possibilities.
All units can be powered from +10 to +30 VDC and are reverse polarity
protected. Current sinking NPN and current sourcing PNP Open Collector
Transistors are protected from continuous overload and inductive load transients
and are rated to 150 mA, with low saturation voltage and less than 1 µA offstate
leakage current. In addition, no false outputs are generated at power-up. A 6 foot
long 4 conductor PVC jacketed cable with strain relief provides supply input
and transistor outputs.
A gasketed removable back cover provides access to the LIGHT/DARK
Operate Mode Selector. When in the “Light Operate” (LO) position, outputs
turn on when light is received by the detector. When in the “Dark Operate”
(DO) position, the outputs are turned on when sensor light is not detected. Also
accessible is a 15-turn screwdriver adjustable GAIN potentiometer that enables
precise adjustment of system sensitivity. A rear mounted LED Signal Strength
Indicator “lights” whenever the sensor sees a light condition and “blinks” at a
rate proportional to the received signals strength (the stronger the signal, the
faster the rate). This LED allows for easy alignment and monitoring of signal
strength deterioration due to dirty optics or changes in alignment.
SPECIFICATIONS
1. POWER REQUIREMENTS: +10 to +30 VDC, 10% Ripple Max., Re verse
Polarity Protected, 25 mA max. (Model EMDC = 20 mA max.)
2. OUTPUTS: Current Sinking NPN and Current Sourcing PNP Open
Collector Transistors; Short Circuit Protected to +30 VDC, Internal Zener
Diode Protected;
I
SNK
= 150 mA each; V
OH
= 30 VDC max.
NPN V
SAT
= 0.2 V @ 10 mA load; 1 V max. @ 150 mA max. load
PNP V
SAT
= Less than 1 V @ 10 mA load; less than 2 V @ 150 mA max.
load
Offstate Leakage Current = Less than 1 µA
3. RESPONSE TIME: Responds to a “light” or “dark” signal duration of 1
msec. or greater.
4. OPERATING TEMPERATURE: -4° to+158°F (-20° to +70°C)
5. WEIGHT: 3.5 oz (99.2 g)
MOUNTING
Various mounting methods have been designed to simplify alignment and
provide versatility in any industrial environment. The integral 18 mm threaded
lense can be interchanged with existing threaded entries common to 18 mm
barrel sensors and inductive proximity switches. The threaded lense can also be
installed into panel thicknesses of 5/16" through a 0.71" diameter hole and
tightened into place with the supplied mounting nut. Two #4 screw clearance
through-holes on 0.95" centers are available for side mounting or side nesting
of multiple units on 1/2" centers for scanning large areas or for code reading
applications. Units may also be mounted using the stainless steel Bottom-Mount
or Side-Mount Bracket Kits (Models MB2 or MB3). These brackets allow 2
axes of movement & greatly simplify alignment.
MODEL RRDC - RETROREFLECTIVE SENSOR
The Model RRDC is a compact, DC powered, retroreflective photo-electric
sensor with maximum detection range of 15 feet (with 3" dia. reflector Model
RT2). The “visible” LED light beam allows for easy alignment and is modulated,
providing immunity to ambient light. The small beam size of 1/2" at 1 foot from
the lense, makes it a good choice for detecting relatively small objects.
In operation, the visible LED light beam is directed at a prismatic photo
transistor, amplified and demodulated. An object which then breaks this beam
will trigger the outputs.
ALIGNMENT
Apply DC power to the RRDC and direct its visible light beam at a reflective
target (Models RT1 or RT2) while observing the Signal Strength LED on the
back of the unit. Optimum alignment occurs when the sensor is receiving the
maximum amount of reflected light and the GAIN (sensitivity) potentiometer is
adjusted for the highest pulse rate on the Signal Strength LED. Note that glass,
metallic objects, and other highly reflective surfaces may not be detected. In
these applications, mount the sensor and reflector at any angle to the object to
minimize direct reflections.
COMPACT DC POWERED PHOTO-ELECTRIC SENSORS
RRDC
RETRO-
REFLECTIVE
SENSING RANGE UP TO 15'
OBJECT
RETRO TARGET
Bulletin No. PES/DC-C
Drawing No. LP0156
Released 04/13
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net