EZ-BEAM
®
M18 Series Sensors
Stainless Steel 18 mm Barrel-style DC Photoelectric Sensors
EZ-BEAM M18 Series Features
• 18 mm threaded-barrel sensor
• 10 to 30V dc; choose SPDT (complementary) NPN or PNP outputs (150 mA max. ea.)
• Easy to use; no adjustments are necessary
• Advanced self-diagnostics with separate alarm output
†
; dual LED system indicates
sensor performance
• Choice of integral cable or Euro-style quick disconnect connector
• Epoxy-encapsulated circuitry; IEC IP67 (NEMA 6P) construction for harsh sensing
environments
• Brackets available for a wide array of mounting options
† U.S. patent 5087838 (see Specifications, page 5)
EZ-BEAM M18 Series Sensing Mode Options
Opposed
Retroreflective
Diffuse
Fixed-Field
Infrared, 950 nm
M18 Series Opposed-Mode Emitter (E) and Receiver (R)
Models
M186E
M186EQ
M18SN6R
M18SN6RQ
M18SP6R
M18SP6RQ
20 m
(66')
Range
Cable*
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
Supply
Voltage
Output
Type
1000
Excess Gain
M18 Series
Beam Width
Effective Beam: 13 mm
1500 mm
1000 mm
500 mm
0
—
E
X
C
E
S
S
G
A
I
N
M18 Series
Opposed Mode
100
Opposed Mode
60 in
40 in
20 in
0
20 in
40 in
60 in
10-30V dc
NPN
10
500 mm
1000 mm
1500 mm
PNP
1
.1 m
.33 ft
1m
3.3 ft
10 m
33 ft
100 m
330 ft
0
5m
16 ft
10 m
32 ft
15 m
49 ft
20 m
66 ft
25 m
82 ft
DISTANCE
DISTANCE
* 9 m (30') cables are available by adding suffix
“W/30”
to the model number of any cabled sensor (e.g.,
M18SN6R W/30).
A model with a QD connector requires an optional mating cable. See page 6 for more information.
Printed in USA
P/N 49201E9A
EZ-BEAM M18 Series Sensors
Non-Polarized, Polarized
P
M18 Series Retroreflective Mode
Models
Range
Cable
Supply
Voltage
Output
Type
1000
Excess Gain
M18 Series
Beam Pattern
Non-Polarized (Infrared, 950 nm)
M18SN6L
M18SN6LQ
2m
(79")
M18SP6L
M18SP6LQ
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
10-30V dc
PNP
NPN
E
X
C
E
S
S
120 mm
M18 Series
Non-Polarized Retro
4.7 in
3.2 in
1.6 in
100
Non-Polarized Retro
80 mm
40 mm
with BRT-3 Reflector
10
0
40 mm
with BRT-3 Reflector
0
1.6 in
3.2 in
4.7 in
G
A
I
N
80 mm
120 mm
0
.5 m
1.6 ft
1.0 m
3.2 ft
1.5 m
4.8 ft
2.0 m
6.4 ft
1
.01 m
.033 ft
2.5 m
8.0 ft
.1 m
.33 ft
1m
3.3 ft
10 m
33 ft
DISTANCE
DISTANCE
Polarized (Visible red, 680 nm)
M18SN6LP
M18SN6LPQ
2m
(79")
M18SP6LP
M18SP6LPQ
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
10-30V dc
PNP
NPN
E
X
C
E
S
S
1000
M18 Series
150 mm
M18 Series
Polarized Retro
6 in
4 in
2 in
100
Polarized Retro
100 mm
50 mm
0
with BRT-3 Reflector
0
2 in
4 in
6 in
with BRT-3 Reflector
10
50 mm
100 mm
150 mm
0
.5 m
1.6 ft
1.0 m
3.2 ft
1.5 m
4.8 ft
2.0 m
6.4 ft
G
A
I
N
1
.01 m
.033 ft
2.5 m
8.0 ft
.1 m
.33 ft
1m
3.3 ft
10 m
33 ft
DISTANCE
DISTANCE
Infrared, 880 nm
M18 Series Diffuse Mode
Models
Range
Cable
Supply
Voltage
Output
Type
1000
Excess Gain
Beam Pattern
Performance based on 90% reflectance white test card
M18 Series
100 mm Range
M18SN6D
M18SN6DQ
100 mm
(4")
M18SP6D
M18SP6DQ
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
10-30V dc
PNP
NPN
E
X
C
E
S
S
15 mm
M18 Series
Short Range Diffuse
0.6 in
0.4 in
0.2 in
0
0.2 in
0.4 in
0.6 in
100
Short Range
Diffuse Mode
Maximum Gain
10 mm
5 mm
0
5 mm
G
A
I
N
10
Minimum Gain
1
1 mm
.04 in
10 mm
15 mm
0
25 mm
1 in
50 mm
2 in
10 mm
.4 in
100 mm
4 in
1000 mm
40 in
75 mm 100 mm 125 mm
3 in
4 in
5 in
DISTANCE
DISTANCE
300 mm Range
M18SN6DL
M18SN6DLQ
300 mm
(12")
M18SP6DL
M18SP6DLQ
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
10-30V dc
PNP
NPN
E
X
C
E
S
S
1000
M18 Series
15 mm
M18 Series
Long Range Diffuse
0.6 in
0.4 in
0.2 in
0
0.2 in
0.4 in
0.6 in
0
80 mm 160 mm 240 mm 320 mm 400 mm
15 in
3 in
6 in
9 in
12 in
10 mm
5 mm
0
100
Maximum Gain
Long Range
Diffuse Mode
G
A
I
N
10
Minimum Gain
1
1 mm
.04 in
5 mm
10 mm
15 mm
10 mm
.4 in
100 mm
4 in
1000 mm
40 in
DISTANCE
DISTANCE
page
2
Banner Engineering Corp.
•
Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 888.373.6767
EZ-BEAM M18 Series Sensors
Infrared, 880 nm
M18 Series Fixed-Field Mode
Models
Cutoff
Point
Cable
Supply
Voltage
Output
Type
Excess Gain
Performance based on 90% reflectance white test card
1000
With 25 mm Far Limit Cutoff
M18SN6FF25
M18SN6FF25Q
25 mm
(1")
M18SP6FF25
M18SP6FF25Q
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
10-30V dc
PNP
NPN
M18 Series
E
X
C
E
S
S
G
A
I
N
100
Fixed-field mode
with 25 mm far
limit cutoff
10
1
.1 mm
.004 in
1 mm
.04 in
10 mm
.4 in
100 mm
4 in
DISTANCE
With 50 mm Far Limit Cutoff
M18SN6FF50
M18SN6FF50Q
50 mm
(2")
M18SP6FF50
M18SP6FF50Q
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
10-30V dc
PNP
NPN
1000
M18 Series
E
X
C
E
S
S
G
A
I
N
100
Fixed-field mode
with 50 mm far
limit cutoff
10
1
.1 mm
.004 in
1 mm
.04 in
10 mm
.4 in
100 mm
4 in
DISTANCE
With 100 mm Far Limit Cutoff
M18SN6FF100
M18SN6FF100Q
100 mm
(4")
M18SP6FF100
M18SP6FF100Q
2 m (6.5')
4-Pin Euro-style QD
2 m (6.5')
4-Pin Euro-style QD
10-30V dc
PNP
NPN
1000
M18 Series
E
X
C
E
S
S
G
A
I
N
100
Fixed-field mode
with 100 mm far
limit cutoff
10
1
.1 mm
.004 in
1 mm
.04 in
10 mm
.4 in
100 mm
4 in
DISTANCE
* 9 m (30') cables are available by adding suffix
“W/30”
to the model number of any cabled sensor (e.g.,
M18SN6FF25 W/30).
A model with a QD connector requires an optional mating cable. See page 6 for more information.
The excess gain curves above show
excess gain vs. sensing distance for M18
Series fixed-field sensors with 25-, 50- and
100-millimeter cutoffs. Maximum excess
gain for the 25-mm models occurs at a
lens-to-object distance of about 7 mm; for
the 50-mm models, at about 10 mm; and
for the 100-mm models, at about 20 mm.
Sensing at or near these distances will
make maximum use of each sensor’s
available sensing power.
Backgrounds and background objects
must
always
be placed beyond the cutoff
distance.
These excess gain curves were generated
using a white test card of 90% reflectance.
Banner Engineering Corp.
•
Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 888.373.6767
Objects with reflectivity of less than 90%
reflect less light back to the sensor, and
thus require proportionately more excess
gain in order to be sensed with the same
reliability as more reflective objects. When
sensing an object of very low reflectivity, it
may be especially important to sense it at or
near the distance of maximum excess gain.
The effects of object reflectivity on cutoff
distance, though small, may be important
for some applications. Sensing of objects
of less than 90% reflectivity causes the
cutoff distances to be “pulled” slightly
closer to the sensor. For example, an
excess gain of 1 for an object that reflects
1/10 as much light as the 90% white card
is represented by the heavy horizontal
graph line at excess gain = 10. An object
of this reflectivity results in far limit cutoffs
of approximately 20, 40 and 70 mm (for
25-, 50- and 100-mm cutoff models,
respectively).
Objects with reflectivity greater than 90%
return more light to the sensor. For this
reason, highly reflective backgrounds or
background objects such as mirrors, pol-
ished metal, and other sources of specular
reflections require special consideration. If
it is necessary to use a highly reflective
background, it should be placed as far
beyond the cutoff distance as possible and
angled to direct reflected light away from
the sensor (see page 4).
page
3
EZ-BEAM M18 Series Sensors
EZ-BEAM M18 Series Fixed-Field Sensor Setup Tips
General
For highest sensitivity, the sensor-to-object distance should be such that the object
will be sensed at or near the point of maximum excess gain (see page 3). The
background must be placed beyond the cutoff distance. Following these two
guidelines makes it possible to detect objects of low reflectivity, even against close-in
reflective backgrounds.
In the drawings and discussion on this page, the letters E, R1, and R2 identify how the
sensor’s three optical elements (Emitter “E”, Near Detector “R1”, and Far Detector
“R2”) line up across the face of the sensor. In Figures 2, 3, and 4, these elements
align vertically; in Figure 5, they align horizontally. Note how the position of the tabs
on the front of the sensor helps to define the sensing axis of the sensor (Figure 1,
right). The sensing axis becomes important in situations like those illustrated in
Figures 4 and 5 below.
Background reflectivity and placement
Avoid mirror-like backgrounds that produce specular reflections. False sensor
response will occur if a background surface reflects the sensor’s light more strongly
to the near detector (R1) than to the far detector (R2). The result is a false ON
condition (Figure 2). Use of a diffusely-reflective (matte) background will cure this
problem. Other possible solutions are to either angle the sensor or angle the
background (in any plane) so that the background does not reflect back to the sensor
(see Figure 3).
An object beyond the cutoff distance, either moving or stationary (and when posi-
tioned as shown in Figure 4), can cause unwanted triggering of the sensor because it
reflects more light to the near detector than to the far detector. Remedy the problem
easily by rotating the sensor 90° (Figure 5) to align the sensing axis horizontally. The
object then reflects the R1 and R2 fields equally, resulting in no false triggering. A
better solution, if possible, may be to reposition the object or the sensor.
Unwanted triggering of the sensor from an object beyond the cutoff can also be
caused by attempting to sense a small object moving perpendicular to the sensor face,
or by an object moving through the off-center position shown in Figure 4. Making the
object larger, centering the sensor relative to the object, or rotating the sensor to place
the sensing axis perpendicular to the longer dimension of the object (Figure 5) will
solve the problem.
Sensing
Axis
E
R2
R1
As a general rule, the most reliable sensing of
an object approaching from the side occurs
when the line of approach is parallel to the
sensing axis.
Figure 1. Sensing axis
Fixed Sensing
Field
M18FF Sensor
E
R2
R1
E = Emitter
R1 = Near Detector
R2 = Far Detector
Core of
Emitted
Beam
Strong
Direct
Reflection
to R1
Cutoff
Distance
Reflective
Background
Figure 2. Reflective background – problem
Fixed Sensing
Field
M18FF Sensor
E
R2
R1
E = Emitter
R1 = Near Detector
R2 = Far Detector
Core of
Emitted
Beam
Cutoff
Distance
Reflective
Background
Fixed Sensing
Field
Cutoff
Distance
Reflective
Background or
Moving Object
M18FF Sensor
Fixed Sensing
Field
Strong
Direct
Reflection
Away From
Sensor
Cutoff
Distance
Reflective
Background
or Moving
Object
M18FF Sensor
E
R2
R1
Figure 3. Reflective background – solution
E, R2, R1
R2 Response
E = Emitter
R1 Response
R1 = Near Detector
R2 = Far Detector
Area of R1 Response
Area of R2 Response
Area of R1 and R2 Response
E = Emitter
R1 = Near Detector
R2 = Far Detector
Area of R1 and R2 Response
Figure 4. Object beyond cutoff – problem
page
Figure 5. Object beyond cutoff – solution
Banner Engineering Corp.
•
Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 888.373.6767
4
EZ-BEAM M18 Series Sensors
EZ-BEAM M18 Series Specifications
Supply Voltage and Current
Opposed Mode Emitters:
Opposed Mode Receivers:
Polarized Retro:
Non-polarized Retro:
Fixed-field:
Diffuse:
Supply Protection Circuitry
Output Configuration
10 to 30V dc (10% maximum ripple); Supply current (exclusive of load current):
25 mA
20 mA
30 mA
25 mA
35 mA
25 mA
Protected against reverse polarity and transient voltages
SPDT (complementary) solid-state dc switch; choose NPN (current sinking) or PNP (current sourcing) models.
Light operate:
N.O. output conducts when the sensor sees its own (or the emitter’s) modulated light
Dark operate:
N.C. output conducts when the sensor sees dark; the N.C. (normally closed) output
may be wired as a normally open alarm output, depending upon hookup to the power
supply (U.S. patent 5087838)
Output Rating
150 mA maximum (each) in standard hookup; When wired for alarm output, the total load may not exceed 150 mA;
Off-state leakage current
< 1 microamp at 30V dc;
On-state saturation voltage
< 1V at 10 mA dc; < 1.5V at 150 mA dc
Protected against false pulse on power-up and continuous overload or short circuit of outputs
Opposed:
3 milliseconds ON, 1.5 milliseconds OFF;
Polarized Retro, Non-Polarized Retro, Fixed-field
and Diffuse:
3 milliseconds ON and OFF
NOTE: 100 millisecond delay on power-up; outputs do not conduct during this time
Opposed mode:
375 microseconds;
Polarized Retro, Non-Polarized Retro, Fixed-field and Diffuse
modes:
750 microseconds; Repeatability and response are independent of signal strength
Two LEDs: Green and Yellow
Green glowing steadily
Green flashing
Yellow glowing steadily
Yellow flashing
power to sensor is ON
output is overloaded
normally open output is conducting
excess gain marginal (1-1.5x) in light condition
Output Protection Circuitry
Output Response Time
Repeatability
Indicators
Construction
Environmental Rating
Connections
Operating Conditions
Vibration and
Mechanical Shock
Housings are Stainless Steel; Lenses are Lexan
®
(opposed models) or acrylic
Rated NEMA 6P (IEC IP67)
2 m (6.5') or 9 m (30') attached cable, or 4-pin Euro-style quick disconnect fitting
Temperature:
-40° to +70°C (-40° to 158°F)
Maximum relative humidity:
90% at 50°C (non-condensing)
All models meet Mil. Std. 202F requirements. Method 201A (Vibration; frequency 10 to 60 Hz, max.,
double amplitude 0.06" acceleration 10G). Method 213B conditions H&I (Shock: 75G with unit operating;
100G for non-operation)
Banner Engineering Corp.
•
Minneapolis, U.S.A.
Website: http://www.baneng.com • Tel: 888.373.6767
page
5
