MINI-BEAM®SM312D
Self-contained DC-operated Diffuse Mode Sensors
Printed in USA 05/01 P/N 03366 rev. D
• Compact, modulated, self-contained diffuse proximity mode
sensors for 10-30V dc operation
• Range to 380 mm (15") (referenced to 90% reflectance
white test card)
• Switch-selectable for light operate or dark operate
• Includes Banner’s exclusive AID™ alignment system*
• Highly repeatable 1 millisecond response
• Both sourcing and sinking outputs (150 mA max. each);
continuous overload and short-circuit protected
• 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 *US patent number 4356393
MINI-BEAM Diffuse Mode Models
375 mm
15.0 in
300 mm
12.0 in
225 mm
9.0 in
150 mm
6.0 in
75 mm
3.0 in
0
0
5 mm
10 mm
15 mm
5 mm
10 mm
15 mm
0
0.2 in
0.4 in
0.6 in
0.2 in
0.4 in
0.6 in
DISTANCE
SM312D
Diffuse Mode
Models Range Cable* Supply
Voltage Output
Type Excess Gain Beam Pattern
SM312D
SM312DQD 380 mm
(15") 2 m (6.5')
4-Pin Euro QD 10-30V dc Bipolar
NPN/PNP
1
10
100
10 mm
.4 in 100 mm
4 in 1000 mm
40 in
1 mm
.04 in
1000
E
X
C
E
S
S
G
A
I
N
DISTANCE
SM312D
Diffuse Mode
Performance based on 90% reflectance white test card
Infrared, 880 nm
*Notes:
i) 9 m (30') cables are available by adding suffix “W/30”to the model number of any cabled sensor (e.g., SM312D 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., SM312DQDP). 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) May be ordered with 0.3 millisecond on/off response by adding suffix “MHS”to the model numbers
(e.g., SM312DMHS). This modification reduces sensing range (and excess gain).
MINI-BEAM®Sensors
SM312D
page 2Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
MINI-BEAM Installation and Alignment
Proper operation of the SM312D sensor requires that it be mounted securely and
aligned properly. Excessive movement or vibration can result in intermittent or false
operation caused by loss of alignment. For best results, final-mount the SM312D in
an 18mm-hole by its threaded barrel or use a mounting bracket (see page 6).
1) Begin with the sensor at the desired distance from the object to be sensed, and at the
approximate position where it will be mounted. The background should be as far
behind the object as possible (at least three times the distance of the sensor from the
object), and as dark a color as possible compared to the object. Ideally, the object
should present its largest reflective surface to the sensor.
2) Apply power to the sensor, and advance the 15-turn GAINcontrol to maximum
(clockwise end of rotation). The GAIN control is clutched at both ends to avoid
damage, and will “free-wheel” when either end point is reached.
If the sensor is “seeing” its reflected light, the sensor alignment LED should be “on”.
Move the sensor 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.
3) Repeat the alignment motions after each GAIN reduction. When you have found the
sensor orientation that produces the fastest pulse rate, mount the sensor solidly in
that position. Increase the receiver GAIN to maximum. Test the system by removing
the object from the sensing position. The receiver LED indicator should go “off”. If
the LED indicator does not go “off”, the sensor is reacting to light reflected from a
background surface. Reduce the GAIN setting until the alignment indicator goes “off”,
plus two additional full turns. Again place the object in the sensing position. If the
alignment indicator does not come “on”, the sensor is receiving as much or more
light energy from the background as from the object. Consider the following
alternatives:
a) move the sensor closer to the object and reduce the sensitivity (GAIN);
b) reduce background reflectivity by painting the background with flat-black
paint, or by scuffing the background or cutting a hole through it;
c) tilt the sensor or the background so that the sensing beam is not
perpendicular to the background.
15 Turn
Gain
Adjustment
and Light/Dark
Operate Switch*
Gasketed
Acrylic Cover
“AID” Indicator LED Lights when the
sensor sees its own modulated
light and pulses at a rate proportional to the
strength of the received light signal.
Object
Up
Down
Left Right
SM312D
Diffuse Mode Alignment
SM312D
* 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)
page 3
MINI-BEAM®Sensors
SM312D
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
MINI-BEAM DC Sensor Specifications
Certifications
Supply Voltage and Current 10 to 30V dc (10% maximum ripple) at less than 25 mA (exclusive of load)
Supply Protection Circuitry Protected against reverse polarity and transient voltages
Output Configuration Bipolar: One current sourcing (PNP) and one current sinking (NPN) open-collector transistor
Output Rating 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
Output Protection Circuitry Protected against false pulse on power-up and continuous overload or short-circuit of outputs
Output Response Time 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 are 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. - SM312DMHS). This modification reduces sensing range (and excess gain).
Repeatability 0.3 milliseconds. Response time and repeatability specifications are independent of signal strength.
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.
Indicators 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).
Construction Reinforced PBT thermoplastic polyester housing, totally encapsulated, o-ring sealing, acrylic lenses, and
stainless steel screws.
Environmental Rating Meets NEMA standards 1, 2, 3, 3S, 4, 4X, 6, 12, and 13; IEC IP67
Connections PVC-jacketed 4-conductor 2 m (6.5 ft) or 9 m (30 ft) cables, or 4-pin euro-style quick disconnect (QD)
fitting are available. QD cables are ordered separately. See page 8.
Operating Temperature Temperature: -20°to +70°C (-4°to +158°F)
Maximum relative humidity: 90% at 50°C (non-condensing)
Application Notes 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.
MINI-BEAM DC Sensor with Integral Cable MINI-BEAM DC Sensor with Quick-Disconnect
MINI-BEAM®Sensors
SM312D
page 4Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
DC Sensors with Attached Cable DC Sensors with Quick Disconnect
(4-Pin Euro-Style)
bn
wh
bu +
–
bk Load
Load
10-30V dc
bn
wh
bu +
–
bk Load
Load
10-30V dc
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.
4-Pin Euro-Style Pin-out
(Cable Connector Shown)
White Wire
Blue Wire
Black Wire
Brown Wire
12.2 mm (0.48 in)
Mounting Peg
(ø 6.3 mm x 2.5 mm)
ø 3 mm Clearance (2)
M18 x 1 x 15 mm Thread
(Mounting Nut Supplied)
3.2 mm (0.13 in)
53.3 mm (2.10 in) 27.4 mm (1.08 in)
30.7 mm
(1.21 in)24.1 mm
(0.95 in)
2 m (6.5 ft) Cable
19.1 mm (0.75 in)
M12 x 1 Thread
Quick Disconnect
20.0 mm
(0.79 in)
MINI-BEAM DC Hookup Diagrams
MINI-BEAM Dimensions
page 5
MINI-BEAM®Sensors
SM312D
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
MINI-BEAM Modifications
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)
Model Suffix Modification
MHS
Example of Model
Number
W/30 9 meter (30') cable
Modified for High
Speed
SM312D W/30
SM312DMHS
All MINI-BEAMs may be built
with a 150 mm (6") long
integral cable which is
terminated with the
appropriate QD connector.
QDP Pigtail Quick
Disconnect SM312DQDP
Replacement Lens Assemblies
MINI-BEAM lens assemblies are field-replaceable.
Model Description
UC-300L Replacement lens for
SM312D
Right-Angle Reflectors
MINI-BEAM right-angle reflectors are useful for tight sensing
locations. NOTE: These reflectors significantly decrease excess gain.
RAR-
300FM
• 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
Model Description
RAR-
300SM
• Side mount reflector
•Profile dimension of 14 mm (0.56") in
the direction of the scan
MINI-BEAM®Sensors
SM312D
page 6Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Mounting Brackets
SMB46L
SMB312PD Stainless steel 18 mm barrel-
mounting bracket
Model Description
• “L” bracket
• 14 ga 316 stainless steel
C
L
8 mm
(0.3 in) 16 mm
(0.6 in)
65 mm
(2.6 in)
27 mm
(1.1 in)
2 mm
(.1 in)
6 mm
(0.2 in)
5 mm (0.2 in)
(2x)
ø36 mm (1.4 in)
ø6.5 mm (0.26 in) (6x)
15 mm
(0.6 in)
6 mm
(0.2 in)
54 mm
(2.1 in)
SMB312S Stainless steel 2-axis, side
mounting bracket
R 5.1 mm
(0.20 in)
ø 3.05 mm
(0.120 in)
ø 3.05 mm Slot
(0.120 in)
20°
90°
C
L
15°
(2)
R 24.1 mm
(0.95 in)
31.8 mm
(1.25 in)
20.1 mm
(0.79 in)
45.5 mm
(1.79 in)
20.3 mm
(0.80 in)
R 3.1 mm
(0.12 in) (2)
10° (TYP)
4.32 mm
(0.170 in)
Slot (2)
2.5 mm
(0.10 in)
R 5.1 mm
(0.20 in)
ø 4.6 mm
(0.18 in)
ø 4.6 mm Slot
(0.18 in)
20°
90°
C
L
15°
(2)
R 24.1 mm
(0.95 in)
31.8 mm
(1.25 in)
40.6 mm
(1.60 in)
45.5 mm
(1.79 in)
18.42 mm
(0.725 in)
R 3.1 mm
(0.12 in) (2)
15.2 mm
(0.60 in)
2.5 mm
(0.10 in)
SMB312B Stainless steel 2-axis, bottom
mounting bracket
90°
10° (2)
10° (2)
2.5 mm
(0.10 in) 3.1 mm
Slot (2)
(0.12 in)
4.3 mm Slot (2)
(0.17 in)
8.6 mm (2)
(0.34 in)
ø 6.9 mm
(0.27 in)
17.3 mm (2)
(0.68 in)
35.0 mm (2)
(1.38 in)
50.8 mm
(2.00 in)
23.4 mm
(0.92 in)
11.4 mm
(0.45 in)
9.1 mm
(0.36 in)
24.1 mm
(0.95 in)
page 7
MINI-BEAM®Sensors
SM312D
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Mounting Brackets
54 mm
(2.1 in)
C
L
8 mm
(0.3 in) 16 mm
(0.6 in)
17 mm
(0.7 in)
34 mm
(1.3 in)
65 mm
(2.6 in)
27 mm
(1.1 in) 16 mm
(0.6 in)
2 mm
(.1 in)
6 mm
(0.2 in)
10 mm
(0.4 in)
5 mm (0.2 in)
(4x)
ø36 mm (1.4 in)
ø6.5 mm (0.26 in) (6x)
3.5 mm
(0.14 in)
15 mm
(0.6 in)
6 mm
(0.2 in)
65 mm
(2.6 in)
27 mm
(1.1 in)
2 mm
(.1 in)
16 mm
(0.6 in)
70 mm
(2.8 in)
54 mm
(2.1 in)
C
L
8 mm
(0.3 in) 16 mm
(0.6 in)
17 mm
(0.7 in)
34 mm
(1.3 in)
6 mm
(0.2 in)
13 mm
(0.5 in)
5 mm (0.2 in)
(4x)
ø36 mm (1.4 in)
ø6.5 mm (0.26 in) (6x)
3.5 mm
(0.14 in)
15 mm
(0.6 in)
6 mm
(0.2 in)
SMB46S
Model Description Dimensions
SMB46U
• “S” bracket
• 14 ga 316 stainless steel
40.0 mm
(1.60 in)
42.4 mm
(1.67 in)
30.0 mm
(1.18 in)
2.5 mm
(0.10 in)
21.1 mm
(0.83 in)
Nut Plate
M5 x 0.8
x 60 mm
Screw (2)
13 mm
(0.5 in)
14.0 mm
(0.55 in)
• “U” bracket
• 14 ga 316 stainless steel
SMB18C
• 18 mm split clamp black PBT
thermoplastic polyester
bracket
• Stainless steel mounting
hardware included
36.0 mm
(1.42")
50.8 mm
(2.00")
42.0 mm
(1.65") 22.9 mm
(0.9")
25.4 mm
(1.00")
10.6 mm
(0.42")
M18 x 1
internal
thread
SMB18SF
• 18 mm swivel bracket
• Black thermoplastic polyester
• Includes stainless steel swivel
locking hardware
Banner Engineering Corp., 9714 Tenth Ave. No., Minneapolis, MN 55441 • Phone: 763.544.3164 • www.bannerengineering.com • Email: sensors@bannerengineering.com
MINI-BEAM®Sensors
SM312D
All MINI-BEAM SM312 dc models
The following cables are available for extending the length of existing sensor cable. These are 30 m (100') lengths of MINI-BEAM cable. This
cable may be spliced to existing cable. Connectors, if used, must be customer-supplied.
Model Type Used with:
EC312-100 4-conductor
Extension Cables (without connectors)
Euro-Style Quick-Disconnect Cables
38 mm max.
(1.5 in)
M12 x 1
ø15 mm
(0.6 in)
38 mm max.
(1.5 in)
Cable: PVC jacket, polyurethane connector body, nickel-plated brass coupling nut
Conductors: 22 or 20 AWG high-flex stranded, PVC insulation, gold-plated contacts
Temperature: -40°to +90°C (-40°to +194°F)
Voltage Rating: 250V ac/300V dc
4-Pin
Straight
MQDC-406
MQDC-415
MQDC-430
2 m (6.5')
5 m (15')
9 m (30')
M12 x 1
ø15 mm
(0.6 in)
44 mm max.
(1.7 in)
Style
4-Pin
Right-angle
MQDC-406RA
MQDC-415RA
MQDC-430RA
2 m (6.5')
5 m (15')
9 m (30')
White Wire
Blue Wire
Black Wire
Brown Wire
Model Length Dimensions: Pin-out
WARRANTY: Banner Engineering Corp. warrants its products to be free from defects for one year. Banner Engineering Corp. will repair or
replace, free of charge, any product of its manufacture found to be defective at the time it is returned to the factory during the warranty
period. This warranty does not cover damage or liability for the improper application of Banner products. This warranty is in lieu of any
other warranty either expressed or implied.
WARNING . . . Not To Be Used for Personnel Protection
Never use this product as a sensing device for personnel protection. Doing so could lead to serious injury or death.
This product does NOT include the self-checking redundant circuitry necessar y to allow its use in personnel safety applications. A
sensor failure or malfunction can cause either an energized or de-energized sensor output condition. Consult your current Banner Safety Products
catalog for safety products which meet OSHA, ANSI and IEC standards for personnel protection.
!
