Banner Micro-Amp MA3 User Manual
MICRO-AMP® System
MA3 and MA3P Modulated Ampliers
Banner MICRO-AMP® modules MA3 and MA3P are modulated ampliers designed
for use with the miniature SP100 Series remote sensors. Miniature photoelectric
sensors, such as the SP100s, have traditionally been used as non-modulated devices with
very limited response. These specially-engineered ampliers bring about a dramatic
improvement in the optical performance of miniature remote sensors.
MICRO-AMP modules are powered by 10 to 30 volts dc, and feature the patented
Banner Alignment Indicator Device (AID™) signal strength LED. Sensor sensitivity
is adjustable via a top-mounted GAIN potentiometer. Model MA3 has complementary current sinking (NPN) outputs; model MA3P has complementary current sourcing (PNP) outputs. Circuitry is epoxy-encapsulated and enclosed in a tough molded
VALOX® housing. Connections may be made to the MICRO-AMP via the optional
RS8 socket/wiring base, or the module may be mounted directly to a printed circuit
board (see page 3).
The small size and the slim ribbon-style connecting cable of SP100 Series sensors
make it possible to use photoelectrics in many situations previously thought to be
impractical or even impossible.
MICRO-AMP® Model MA3 Specications
SUPPLY VOLTAGE: 10 to 30V dc at less than 20 milliamps (ex-
clusive of load); 10% maximum ripple.
OUTPUT CONFIGURATION: two open-collector NPN (current
sinking) transistor (solid-state) switches; one normally open (light
operate) and one normally closed (dark operate); 150 milliamps maximum, each output. Saturation voltage less than 0.5V dc at 10 milliamp
load. Off-state leakage current less than 1 microamp.
RESPONSE SPEED: 1 millisecond ON and OFF.
REPEATABILITY: 0.3 millisecond.
SENSOR LEAD LENGTH: 15 feet (4,5 m) maximum.
ADJUSTMENT: GAIN adjustment (single-turn potentiometer;
adjust with small at-blade screwdriver).
INDICATOR: exclusive Banner Alignment Indicator Device
(AID™) system lights a red LED indicator whenever the sensor "sees"
its own modulated light source, and pulses at a rate proportional to the
strength of the received light signal.
CONSTRUCTION*: totally encapsulated plug-in package with
molded VALOX® housing. Gold-ashed connection pins.
OPERATING TEMPERATURE:
0 to +70 degrees C (32 to +158 degrees F).
*A Dimension Drawing appears on page 3.
Functional Schematic, MA3 Amplier
Hookup Diagram, MA3 Amplier
Model MA3P: PNP (current sourcing) output
Model MA3P has the same specications and performance as the MA3 amplier, except that the MA3P has complementary PNP outputs in
place of the MA3's NPN conguration.
OUTPUT: two PNP transistors, complementary outputs; one normally open (light operate) and one normally closed (dark operate). 150 milliamps maximum, each output. Saturation voltage is less than 1V dc at 10 milliamps. Off-state leakage current is less than 1 microamp.
Hookup Diagram, MA3P Amplier
Printed in USA
03340F3G
Sensors for use with MA3 and MA3P Modulated Ampliers
Temperature range for all miniature modulated remote sensors is 0 to 70 degrees C (+32 to 158 degrees F).
Sensors are epoxy-encapsulated and optics are hermetically sealed.
Models/Dimensions Excess Gain Beam Pattern
SP100D
SP100E &
SP100R
Range: 8 inches (20cm)
Beam: infrared, 880nm
Effective beam: .05 inch
(1,3mm diameter)
Cable (all 6-foot lengths):
SP100E: 2-wire ribbon cable
(white, green).
SP100R: 3-wire ribbon cable
(red, black, yellow).
SP100D, DB, C, CCF: 5-wire
ribbon cable (white, green, red,
black, yellow). See hookup
drawing.
SP100DB
OPPOSED Mode Sensors
SP100E and SP100R miniature opposed sensors have a slim right-angle design
which allows them to be mounted in very tight locations. The thin, exible ribbon cable which exits from one corner may be run in any direction away from
the sensing point. The SP100E and R have a wide beam angle for forgiving
line-of-sight alignment. Alignment is easily made exact (and monitored) using
the AID™ LED on the MICRO-AMP module.
DIFFUSE Mode Sensors
Models SP100D and SP100DB are general-purpose miniature diffuse sensors
which detect the reection of their own light from the surface of an object. The
SP100D is a right-angle design which is generally held in place using a #4 (3mm)
screw. The SP100DB ("B" = Barrel) is an in-line threaded barrel which typically
mounts through a 3/8" (10mm) diameter hole using the lock nuts which are supplied. The optical response characteristics of these two sensors are identical.
CONVERGENT Mode Sensors
SP100C SP100CCF
Models SP100C and CCF are ideally suited to applications where depth of eld
is critical. The emitter and receiver are both directed at a point 0.1 inch (2,5mm)
ahead of the front surface. An aperture is included which, when attached, nar-
rows the depth of eld (see curves, below). This is particularly useful when it
is necessary to detect an object while ignoring another object or a surface just a
fraction of an inch farther away. The high excess gain at the focus allows detec-
tion of objects of low reectivity. The SP100C and CCF differ only in housing
style. Model SP100C is for general application. Model SP100CCF is used where
a narrow prole is important for mounting.
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