Banner MICRO-AMP Series - Manual (Page 3)

Banner MICRO-AMP ® modules MA3 and MA3P are modulated amplifiers designed
for use with SP100 Series miniature remote sensors. Miniature photoelectric sensors
have traditionally been used as non-modulated devices with very limited response.
MICRO-AMP amplifiers have a specially-engineered modulated design which brings
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 (page 20).
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.
Hookup Diagram, MA3P Amplifier
MICRO-AMP ® System
MA3 and MA3P Modulated Amplifiers
SUPPLY VOLTAGE: 10 to 30V dc at less than 20 milliamps
(exclusive 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 flat-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 propor-
tional to the strength of the received light signal.
CONSTRUCTION*: totally encapsulated plug-in package with
molded VALOX
® housing. Gold-flashed connection pins.
OPERATING TEMPERATURE:
0 to +70 degrees C (32 to +158 degrees F).
*A Dimension Drawing appears on page 2.
MICRO-AMP ® Model MA3 Specifications
Model MA3P: PNP (current sourcing) output
Model MA3P has the same specifications and performance as the MA3 amplifier, except that the MA3P has complementary PNP outputs in
place of the MA3's NPN configuration.
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.
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Hookup Diagram, MA3 Amplifier Functional Schematic, MA3 Amplifier