MINI-BEAM
®
SM31E/SM31R and SM31EL/SM31RL
Self-contained DC-operated Opposed Mode Sensors
• Compact, self-contained opposed mode modulated
infrared sensor pairs for 10-30V dc operation
• Standard sensor pairs have 3 m (10 ft) range
• Long range sensor pairs have 30 m (100 ft) range
• Switch-selectable for light operate or dark operate; Highly
repeatable, 1 millisecond response
• Both sourcing and sinking outputs (150 mA maximum ea.)
• Receivers include Banner’s
exclusive
AID™
alignment
system, US patent number 4356393
• Rugged, epoxy-encapsulated construction: meets NEMA
standards 1, 2, 3, 3S, 4, 4X, 6, 12 and 13, IEC IP67
• Physically and electrically interchangeable with 18 mm
barrel-type photoelectrics
Infrared, 880 nm
MINI-BEAM Opposed-Mode Emitter (E) and Receiver (R) Models
Models
Range
Cable*
Supply
Voltage
Output
Type
1000
Excess Gain
E
X
C
E
S
S
G
A
I
N
SM31E & SM31R
300 mm
100
Opposed Mode
200 mm
100 mm
0
10
100 mm
200 mm
300 mm
1
.01 m
.033 ft
0
.10 m
.33 ft
1.0 m
3.3 ft
10 m
33 ft
Beam Pattern
SM31E & SM31R
Opposed Mode
12.0 in
8.0 in
4.0 in
0
4.0 in
8.0 in
12.0 in
SM31E
SM31R
SM31EQD
SM31RQD
3m
(10')
2 m (6.5')
2 m (6.5')
4-Pin Euro QD
4-Pin Euro QD
10-30V dc
Bipolar
NPN/PNP
.6 m
2 ft
1.2 m
4 ft
1.8 m
6 ft
2.4 m
8 ft
3.0 m
10 ft
DISTANCE
DISTANCE
1000
SM31EL & SM31RL
750 mm
Opposed Mode
500 mm
250 mm
0
250 mm
SM31EL
SM31RL
SM31ELQD
SM31RLQD
30 m
(100')
2 m (6.5')
2 m (6.5')
4-Pin Euro QD
4-Pin Euro QD
10-30V dc
Bipolar
NPN/PNP
E
X
C
E
S
S
G
A
I
N
SM31EL & SM31RL
Opposed Mode
30.0 in
20.0 in
10.0 in
0
10.0 in
20.0 in
30.0 in
100
10
500 mm
750 mm
0
1.0 m
3.3 ft
10 m
33 ft
100 m
330 ft
6m
20 ft
12 m
40 ft
18 m
60 ft
24 m
80 ft
1
.1 m
.33 ft
30 m
100ft
DISTANCE
DISTANCE
*NOTES:
i) 9 m (30') cables are available by adding suffix
“W/30”
to the model number of any cabled sensor (e.g.,
SM31EL W/30).
ii) A 150 mm (6") long pigtail cable with attached QD connector is available by adding suffix
“QDP”
to the model number of any
MINI-BEAM sensor (e.g.,
SM31ELQDP).
See page 5 for more information.
iii) A model with a QD connector requires an accessory mating cable. See page 8 for more information.
iv) Emitters and receivers may be ordered with 0.3 millisecond on/off response by adding suffix
“MHS”
to the model numbers
(e.g.,
SM31EMHS & SM31RMHS).
This modification reduces sensing range (and excess gain).
Printed in USA
05/01
P/N 03560 rev. C
MINI-BEAM
®
Sensors
SM31E/SM31R and SM31EL/SM31RL
MINI-BEAM Installation and Alignment
Proper operation of the sensors requires that they be mounted
securely and aligned properly. Excessive movement or vibration
can cause intermittent or false operation due to loss of alignment.
For maximum mechanical stability, final-mount these sensors in
18-mm holes by their threaded barrels or use a mounting bracket
(see page 6).
1) Begin with the emitter mounted securely in place. For
small-parts counting applications, stretch a string
between the emitter and receiver lenses to ensure that the
sensing beam will pass through the center of the sensing
location. For less critical applications, the receiver may be
initially positioned by line-of-sight placement. Mount the
receiver, leaving a means for movement.
2) Apply power to the emitter and receiver, and advance the
receiver’s 15-turn GAIN control to maximum (clockwise
end of rotation). The GAIN control is clutched at both
ends to avoid damage, and will “free-wheel” when either
endpoint is reached.
If the receiver is “seeing” the emitter’s light beam, the
receiver alignment LED should be “on”. Move the receiver
up-down-right-left (include angular rotation) to obtain the
fastest receiver LED pulse rate. If a pulse is not
observable (too fast to count), reduce the GAIN control
(counterclockwise rotation) to obtain a countable pulse
rate of one to five beats per second. Note: to aid
alignment at short ranges, it may help to further reduce
the strength of the light signal by temporarily masking
the emitter and/or receiver lens with tape or a sheet of
paper.
3) Repeat the alignment motions after each GAIN reduction.
When you have found the receiver orientation that
produces the fastest pulse rate, mount the receiver solidly
in that position. Remove any masking material, and
increase the receiver GAIN to maximum. Test the system
by placing the object to be detected into the sensing
position. The receiver LED indicator should go “off”. If it
does not go “off”, the cause is probably either “flooding”
or “burn-through”.
Flooding
occurs when a portion of the effective beam
passes
around
the object to be sensed and activates the
receiver. Check that the object completely breaks the
beam, and that the beam is centered on the object. Add
apertures, if necessary, to tailor the effective beam to the
size or profile of the object being sensed.
Burn-through
refers to a portion of the emitter’s light energy passing
through
a thin or translucent object and activating the
receiver. Try sensing at a reduced GAIN setting or
consider an alternative sensing scheme.
Opposed Mode Alignment
Move receiver to obtain the
fastest LED pulse rate.
Receiver
Emitter
Up
t
gh
Ri
ft
Le
wn
Do
Receiver
15 Turn
Gain
Adjustment
and Light/Dark
Operate Switch*
Gasketed
Acrylic Cover
“AID” Indicator LED lights when the
sensor sees the reflection of its own modulated
light and pulses at a rate proportional to the
strength of the received light signal
* Note regarding Light/Dark operate switch:
• Turn switch
fully
clockwise for light operate (sensor
outputs conduct when sensing light is received)
• Turn switch
fully
counterclockwise for dark operate
(sensor outputs conduct when sensing light is not
received)
Banner Engineering Corp.
•
Minneapolis, U.S.A.
page
2
www.bannerengineering.com • Tel: 763.544.3164
MINI-BEAM
®
Sensors
SM31E/SM31R and SM31EL/SM31RL
MINI-BEAM DC Sensor Specifications
Supply Voltage and Current
Supply Protection Circuitry
Output Configuration
Output Rating
10 to 30V dc (10% maximum ripple) at less than 25 mA (exclusive of load)
Protected against reverse polarity and transient voltages
Bipolar: One current sourcing (PNP) and one current sinking (NPN) open-collector transistor
150mA maximum each output at 25°C, derated to 100 mA at 70°C (derate
≈1
mA per °C)
Off-state leakage current
less than 1 microamp
Output saturation voltage
(PNP output) less than 1 volt at 10 mA and less than 2 volts at 150 mA
Output saturation voltage
(NPN output) less than 200 millivolts at 10 mA and less than 1 volt at 150 mA
Protected against false pulse on power-up and continuous overload or short-circuit of outputs
Sensors will respond to either a “light” or a “dark” signal of 1 millisecond or longer duration, 500 Hz max.
0.3 millisecond response modification is available. See note below.
(100 millisecond delay on power-up; outputs do not conduct during this time.)
NOTE: DC MINI-BEAMs may be ordered with 0.3 millisecond on/off response by adding suffix “MHS” to
the model numbers (e.g, SM31EMHS & SM31RMHS). This modification reduces sensing range
(and excess gain).
Adjustments
LIGHT/DARK OPERATE select switch, and 15-turn slotted brass screw GAIN (sensitivity) adjustment
potentiometer (clutched at both ends of travel). Both controls are located on rear panel of sensor and
protected by a gasketed, clear acrylic cover.
Exclusive, patented Alignment Indicating Device system (AID
™
, US patent #4356393) lights a rear-panel
mounted red LED indicator whenever the sensor sees a “light” condition, with a superimposed pulse rate
proportional to the light signal strength (the stronger the signal, the faster the pulse rate).
Reinforced thermoplastic polyester housing, totally encapsulated, o-ring sealing, acrylic lenses, and
stainless steel screws.
Meets NEMA standards 1, 2, 3, 3S, 4, 4X, 6, 12, and 13; IEC IP67
PVC-jacketed 4-conductor 2 m (6.5') or 9 m (30') cables, or 4-pin Euro-style quick disconnect (QD)
fitting are available. QD cables are ordered separately. See page 8.
Temperature:
-20° to +70°C (-4° to +158°F)
Maximum relative humidity:
90% at 50°C (non-condensing)
The NPN (current sinking) output of dc MINI-BEAM sensors is directly compatible as an input to Banner
logic modules, including all non-amplified MAXI-AMP and MICRO-AMP modules. MINI-BEAMs are
TTL compatible.
Output Protection Circuitry
Output Response Time
Indicators
Construction
Environmental Rating
Connections
Operating Temperature
Application Notes
Certifications
NOTE: DC MINI-BEAMs may be ordered with 0.3 millisecond on/off response by adding suffix “MHS” to the model numbers
(e.g. - SM31EMHS & SM31RMHS). This modification reduces sensing range (and excess gain).
Banner Engineering Corp.
•
Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
page
3
MINI-BEAM
®
Sensors
SM31E/SM31R and SM31EL/SM31RL
MINI-BEAM DC Hookup Diagrams
Receivers with Attached Cable
bn
bu
wh
bk
Load
Load
Receivers with Quick Disconnect
(4-Pin Euro-Style)
bn
bu
wh
bk
Load
Load
+
10-30V dc
–
+
10-30V dc
–
Emitters with Attached Cable
Emitter with Quick Disconnect
(4-Pin Euro-Style)
bn
bu
wh
bk
+
10-30V dc
–
bn
bu
+
10-30V dc
–
4-Pin Euro-Style Pin-out
(Cable Connector Shown)
Brown Wire
Black Wire
White Wire
Quick Disconnect (QD) Option
DC MINI-BEAM sensors are sold with either a 2 m (6.5') or
a 9 m (30') attached PVC-covered cable, or with a 4-pin
Euro-style QD cable fitting.
DC QD sensors are identified by the letters “QD” in their
model number suffix. For more information on mating QD
cables, see page 8.
Blue Wire
MINI-BEAM Dimensions
MINI-BEAM DC Sensor with Integral Cable
3.2 mm (0.13 in)
30.7 mm
(1.21 in)
24.1 mm
(0.95 in)
12.2 mm (0.48 in)
MINI-BEAM DC Sensor with Quick-Disconnect
ø 3 mm Clearance (2)
M18 x 1 x 15 mm Thread
(Mounting Nut Supplied)
M12 x 1 Thread
Quick Disconnect
2 m (6.5 ft) Cable
Mounting Peg
(ø 6.3 mm x 2.5 mm)
19.1 mm (0.75 in)
20.0 mm
(0.79 in)
27.4 mm (1.08 in)
53.3 mm (2.10 in)
Banner Engineering Corp.
•
Minneapolis, U.S.A.
page
4
www.bannerengineering.com • Tel: 763.544.3164
MINI-BEAM
®
Sensors
SM31E/SM31R and SM31EL/SM31RL
MINI-BEAM Modifications
Model Suffix
W/30
Modification
9 meter (30') cable
Description
All MINI-BEAM sensors may be ordered with an integral 9 m (30')
cable in place of the standard 2 m (6.5') cable
Standard dc MINI-BEAM sensors with 1 millisecond output response may
be modified for 0.3 millisecond (300 µs) response.
NOTE: Faster response comes at the expense of lower excess gain.
Also, operating temperature range becomes -20º to +50ºC (-4º to +122ºF)
All MINI-BEAMs may be built
with a 150 mm (6") long
integral cable which is
terminated with the
appropriate QD connector.
Example of Model
Number
SM31E W/30
SM31EMHS
NOTE: Emitter and receiver
must both have MHS
modification
MHS
Modified for High
Speed
QDP
Pigtail Quick
Disconnect
SM31EQDP
Apertures
Opposed mode MINI-BEAM sensors may be fitted with apertures which narrow or shape the effective beam of the sensor to more closely match
the size or profile of the object to be sensed. A common example is the use of “line” or “slit” type aperture when wire or thread is be sensed.
Each model contains 20 apertures.
Model
AP31-020
AP31-040
AP31-100
AP31-020H
AP31-040H
AP31-100H
AP31-200H
AP31-020V
AP31-040V
AP31-100V
AP31-200V
AP31-DVHX2
0.5 mm (0.02") diameter, circular
1.0 mm (0.04") diameter, circular
2.5 mm (0.10") diameter, circular
Description
0.5 x 6.4 mm (0.02" x 0.25"), horizontal slotted
1.0 x 6.4 mm (0.04" x 0.25"), horizontal slotted
2.5 x 6.4 mm (0.10" x 0.25"), horizontal slotted
5.1 x 6.4 mm (0.20" x 0.25"), horizontal slotted
0.5 x 12.7 mm (0.02" x 0.50"), vertical slotted
1.0 x 12.7 mm (0.04" x 0.50"), vertical slotted
2.5 x 12.7 mm (0.10" x 0.50"), vertical slotted
5.1 x 12.7 mm (0.20" x 0.50"), vertical slotted
Kit containing two of each aperture
Replacement Lens Assemblies
MINI-BEAM lens assemblies are field-replaceable.
Right-Angle Reflectors
MINI-BEAM right-angle reflectors are useful for tight sensing
locations. NOTE: These reflectors significantly decrease excess gain.
Model
Description
Model
RAR-
300SM
Description
• Side mount reflector
• Profile dimension of 14 mm (0.56") in
the direction of the scan
• Front mount reflector that attaches
directly to the threaded barrel of most
MINI-BEAMs
• Profile dimension of 34 mm (1.35")
in the direction of the scan
UC-300E
UC-300EL
Replacement lens for E/R
Replacement lens for
EL/RL or use for
extending range of E/R
RAR-
300FM
Banner Engineering Corp.
•
Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
page
5
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