MICRO-AMP® System
MA3-4 and MA3-4P Modulated Amplifiers
Banner MICRO-AMP® module models MA3-4 and MA3-4P are modulated ampli-
fiers designed for use with the popular family of Banner high-performance remote
sensors. When these modulated remote sensors are used with the MA3-4 or MA3-4P,
their optical response is the same as when they are used with the larger MAXI-AMP
CM Series modules.
These modules are powered by 10 to 30 volts dc. They feature the patented Banner
Alignment Indicator Device (AID™) signal strength LED. Sensor sensitivity is ad-
justable via a top-mounted GAIN potentiometer. Circuitry is epoxy-encapsulated and
protected by a tough molded VALOX® housing. Connections may be made to these
modules via the optional RS8 socket/wiring base, or the module may be mounted
directly to a printed circuit board.
The sensors which are used with these modules are totally encapsulated for durability
and infinite life. Wide beam angles eliminate alignment problems, and high optical gain permits reliable sensing under severe condi-
tions.
MICRO-AMP MA3-4 Specifications
ADJUSTMENT: GAINadjustment(single-turnpotentiometer;adjust
SUPPLY VOLTAGE: 10 to 30V dc at less than 20 milliamps (exclu-
with small flat-blade screwdriver).
sive of load); 10% maximum ripple.
INDICATOR: exclusiveBannerAlignmentIndicatorDevice(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.
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 maxi-
mum, each output. Saturation voltage less than 0.5V dc at 10 milliamp
load. Off-state leakage current less than 1 microamp.
CONSTRUCTION: totally encapsulated plug-in package with
molded VALOX® housing. Gold-flashed connection pins.
RESPONSE SPEED: 1 millisecond ON and OFF.
REPEATABILITY: 0.3 millisecond.
OPERATING TEMPERATURE:
-40 to +70 degrees C (-40 to +158 degrees F).
SENSOR LEAD LENGTH: 30 feet (9m) maximum.
Hookup Diagram, MA3-4
Functional Schematic, MA3-4
Model MA3-4P: PNP (current sourcing) output
Model MA3-4P has the same specifications and performance as the MA3-4 amplifier, except that the MA3-4P has complementary PNP outputs
in place of the MA3-4's NPN configuration.
OUTPUT: two PNP transistors, complementary outputs; one normally open (light operate) and one normally closed (dark operate). 150 mil-
liamps maximum, each output. Saturation voltage less than 1V dc at 10 milliamps. Off-state leakage current less than 1 microamp.
Hookup Diagram, MA3-4P
P/N 03341F3G
Printed in USA
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Sensors for use with MA3-4 and MA3-4P Modulated Amplifiers
Sensors are epoxy-encapsulated. Cables are 6-1/2 feet (2m) long. 30-foot (9m) cables available by special order.
Models/Dimensions
Excess Gain
Long Range
OPPOSED Mode
Beam Pattern
SP300EL & SP300RL
Temp. range: -40 to +100°C
Housing material: anodized
aluminum
Range: 50 feet (15m)
Effective Beam: .5 inch (13mm)
dia.
Emitter-receiver pair SP300EL/RL are extremely rugged and are totally
encapsulated in anodized aluminum housings. The threaded hub at the cable
exit allows for the use of flexible armored cable or protective PVC tubing with
the addition of compression gland model CF7-16. This pair uses collimating
lenses to increase range. These sensors should also be used at short ranges for
their high excess gain or to avoid optical "crosstalk" in situations which require
several pairs to be mounted adjacent to one another.
RETROREFLECTIVE
Mode
SP300L
Range: 15 feet (4,5m)
with BRT-3 retroreflector
Temp. range: -40 to +80°C
Housing material: blue anodized
aluminum
Model SP300L is a remote retroreflective sensor with the same rugged design
as the SP300EL/RL, described above. Its useable range is from 6 inches to 15
feet (0,2 to 4,5m) using the model BRT-3 retroreflector.
If the object that is to break the beam has a shiny surface, then the SP300L and
its retroreflector should be mounted so that the beam is at an angle of 10 degrees
or more to that surface in order to eliminate false signals which are caused by
proxing.
LP400WB
DIVERGENT Mode
Range: 3 inches (76mm)
Temp. range: -40 to +80°C
Housing material: blue anodized
aluminum
sensing objects with irregular surfaces (e.g.- webs with "flutter"). The optics are
such that even small threads or wires .005" (0,1mm) or greater in diameter may be
"WB" in this model number designates "wide beam". The LP400WB is an detected when they pass within .25" (6mm) of the sensor's plastic lens. Due to its
infrared divergent mode (wide angle diffuse mode) sensor which is particularly wide response pattern, the LP400WB should not be used for precise positioning
forgiving for reflectively sensing transparent or translucent materials or for
control, nor should it be mounted with its lens recessed into a hole.
3
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Sensors for use with MA3-4 and MA3-4P Modulated Amplifiers
Sensors are epoxy-encapsulated. Cables are 6-1/2 feet (2m) long. 30-foot (9m) cables available by special order.
Models/Dimensions
Excess Gain
DIFFUSE
Beam Pattern
SP320D
SP300D
Mode
Temp. range: -40 to +80°C both
models
Range: 12 inches (30cm) both models
Housing material (SP300D):
green anodized aluminum
Housing material (SP320D):
black VALOX®
SP300D: the SP300D is the diffuse mode version of the SP300L with the same
rugged aluminum housing and totally encapsulated construction. The glass
lenses are hermetically sealed, which eliminates any possibility of condensa-
tion inside the lenses and allows operation in adverse environments like steam
washdown and high vibration. The SP300D may be mounted by its through-
holes or with the SMB300 bracket, as shown below.
SP320D: model SP320D is identical to the SP300D, except for its housing. The
320 is a miniature plastic package, designed to fit into very tight locations. It
mounts using two #4 (3mm) screws. The SP320D and the SP300D are excellent
for nearly any presence sensing application.
SMB300
Accessory bracket model SMB300 is designed for 2-axis universal
mounting of sensor models SP300EL, SP300RL, SP300L, and SP300D.
These sensors are affixed to the SMB300 with two #6 (3,5mm) screws.
The bracket, in turn, mounts with two #10 (5mm) screws.
Universal Mounting
Bracket for
SP300 Sensors
In addition, as indicated by the dimension drawing, the SMB300 has a
clearance slot for mounting LR400, PT400, and LP400WB barrel sen-
sors. LR & PT200 sensors may be mounted with the SMB300, using
its 7/16-20 threaded hole and steel jam nut, which is supplied with the
sensors. LR250 and PT250 sensors may be used with the SMB300 when
the SMB250 block is used. Also, two SMB250 blocks may be attached
to the SMB300 bracket and angled to mechanically converge an LR &
PT250 sensor pair.
The SP1000V is a convergent mode sensor that produces a very small 0.1
inch (2,5mm) diameter sensing image at a point exactly 3.8 inches (96mm)
from its glass lenses. As the excess gain curve illustrates, the SP1000V has a
very sharp drop-off of gain beyond the focus point. This feature makes it an
excellent choice for detecting a small part which is only a fraction of an inch
in front of another surface, such as parts on a conveyor (viewed from above).
It is also ideal for fill level detection and for precise positioning control, in
lieu of opposed sensing.
SP1000V
CONVERGENT Mode
Range: focus at 3.8 inches (96mm)
Temp. range: -40 to +80 degrees C
Housing material: black anodized
aluminum
4
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Sensors for use with MA3-4 and MA3-4P Modulated Amplifiers
Sensors are epoxy-encapsulated and optics are hermetically sealed. Cables are 6-1/2 feet (2m) long. 30-foot (9m) cables available by special
order.
Models/Dimensions
Excess Gain
Beam Pattern
LR400 & PT400
FIBER OPTIC Mode
with FOF-400 fittings
and fiber optics
glass fiber optics
Range: see excess gain curves
Temp. range: -40 to +100°C
The threaded barrel design of the
LR400 and PT400 permit the con-
nection of any Banner glass fiber
optic assembly by using two model
FOF-400 fittings. The sensors are
typically mounted through a 3/8
inch (10mm) diameter clearance
hole, with the FOF-400 fittings
threaded onto them after mount-
ing. Setscrews in the fittings lock
the fibers in place, but allow rapid
replacement without disturbing any
electrical wiring.
As the excess gain curves show, the
LR/PT400 combination produces a
high-performance fiber optic sens-
ing system. With the amplifier's
1 millisecond response time, this
system can be used for almost any
fiber optic requirement.
Fiber optic information:
IT13S: individual assembly .06 in.
(1,5mm) dia. bundle
IT23S: individual assembly .12 in.
(3mm) dia. bundle
BT13S:bifurcated assembly .06 in.
(1,5mm) dia. bundle
FOF-400 fiber optic fitting
BT23S:bifurcated assembly .12 in.
(3mm) dia. bundle
L9: .5 in. (12mm) dia. lens
L16F: 1.0 in. (25mm) dia. lens
Sensor Hookup Diagrams for MA3-4 MICRO-AMP Modules
(continued on
page 6)
Thefollowinghookupdiagramsincludeallofthe
Hookup of LR/PT200, 250, 300, and 400
remote sensors for use with the model MA3-4
modulated amplifier module. It is important to
note how the shield wire of a remote sensor is
wired. The shield wire is the uninsulated wire
in each sensor cable. Failure to connect the
shield as shown may result in false operation of
the amplifier. When wiring emitters, it is good
practice to connect the positive wire first. LEDs
are sensitive to application of the wrong voltage,
and can easily be destroyed.
NOTE: only one sensor may be connected to
each MA3-4 amplifier.
NOTE: Shield wires must be connected as shown to avoid cable crosstalk.
5
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Sensor Hookup Diagrams for MA3-4 MICRO-AMP Modules (continued)
Hookup of LR300 and PT300
Hookup of SP300D, SP300L, LP400WB, SP1000V
IMPORTANT : Cable Splicing Information
Hookup of SP320D
Remote sensor cables may be run up to 30 feet (9m) away from the MA3-4
amplifier. All sensor models are available from the factory with 30 feet of
cable, installed as an option.
When splicing additional cable to the standard 6-1/2 foot length, it is
important to use a separate shielded cable for emitter and receiver wires.
Combining emitter and receiver wires together in the same cable (even if
the cable is shielded) will result in direct coupling of the emitter signal to
the receiver leads.
This is called "cable crosstalk" and will not allow full amplifier sensitivity
setting without an amplifier "lock on" situation, which appears as a con-
tinuous LIGHT condition. Banner offers 100 foot (30m) lengths of sensor
extension cable (see below) which, if used for cable splicing, will minimize
the chances for cable crosstalk.
Accessories for High Performance Modulated Remote Sensors
Extension Cable
# of
Wires
Extension Cable
Model
Used on Sensor Models
Wire Colors
Modulated remote sensors require specially
designed cable for efficient sensor performance.
Extension cable is available in 100 foot (30m)
lengths.
LR200, LR250, LR400,
SP300EL
ESC-100
3
3
5
White, Green, Shield
Red, Black, Shield
PT200, PT250, PT400,
SP300RL
RSC-100
SSC-100
White, Green, Red, Black,
Shield
SP300D, SP300L, LP400WB,
SP1000V
White, Shield
Red, Shield
EC300E-100
EC300R-100
2
2
LR300
PT300
White, Shield, Red, Shield
EC320-100
4
SP320D
WARNINGMICRO-AMP®SystemsdoNOT
includetheself-checkingredundantcircuitryneces-
sary to allow their use in personnel safety applica-
tions. A sensor or amplifier failure or malfunction
can result in either an energized or a de-energized
output condition.
Cable Protection
AC-6 6 feet (1,8m)
PVC-6 6 feet (1,8m)
PVC-30 30 feet (9m)
Heavy duty PVC tubing used to
protect sensor cable in applications
involving moisture and/or corrosive
materials. I.D. = 1/4"; O.D. = 3/8".
AC-30 30 feet (9m)
This is mild-steel flexible tubing
used with the compression fittings, at
right, to achieve maximum protection
to sensor cables.
Never use this product as a sensing device for personnel protection. Its
use as a safety device may create an unsafe condition which could lead
to serious injury or death.
I.D. = 5/16"; O.D. = 7/16".
Only MACHINE-GUARD and PERIMETER-GUARD Systems, and
other systems so designated, are designed to meet OSHA and ANSI
machine safety standards for point-of-operation guarding devices. No
otherBannersensorsorcontrolsaredesignedtomeetthesestandards,and
they must NOT be used as sensing devices for personnel protection.
Banner Engineering Corp. 9714 10th Avenue No., Minneapolis, MN 55441 Telephone: (763) 544-3164 FAX (applications): (763) 544-3573
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