SM512LBD 데이터 시트보기 (PDF) - Unspecified
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SM512LBD Datasheet PDF : 4 Pages
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SM512 Series Diffuse Mode Sensors
SM512DB
Diffuse mode
OBJECT
VOLTAGE: 10-30V dc
RANGE: 8 inches (20 centimeters)
RESPONSE TIME: 1 millisecond
REPEATABILITY: 0.3 millisecond
SENSING BEAM: infrared, 940nm
1000
100
10
SM512DB
Range based on 90%
reflectance white
test card
1
.1 IN
1 IN
10 IN
DISTANCE
100 IN
0.3
0.2
I
N 0.1
C
H0
E
S 0.1
0.2
0.3
SM512DB
0
2
4
6
8
12
DISTANCE TO 90% WHITE TEST CARD--INCHES
Model SM512DB is a short-range proximity mode sensor for applications requiring fast response time, such as leading-edge
detection in carton-flap gluing installations or presence sensing for triggering high-speed ink-jet type imprinters.
It is totally encapsulated and its lenses are hermetically sealed to the case, making it completely leakproof. It should be used
to sense any matte-finish material such as paper, corrugated cardboard, wood, dull plastics, or painted metal surfaces. It should
not be used to sense transparent objects or those with very shiny surfaces, (unless the position of the shiny surface can be reliably
maintained at an angle of 90 degrees to the beam). It will sense very small parts, but at greatly reduced ranges: a toothpick, for
example, would be reliably sensed at a distance of up to about 1 inch.
SM512DBX Diffuse mode
OBJECT
VOLTAGE: 10-30V dc
RANGE: 15 inches (38 centimeters)
RESPONSE TIME: 10 milliseconds
REPEATABILITY: 0.3 millisecond
SENSING BEAM: infrared, 880nm
1000
SM512DBX
E
X
C 100
E
without lens
S
S
Range based on 90%
reflectance white
test card
G
A 10
II
N
withL52 lens
1
.1 IN
1 IN
10 IN
DISTANCE
100 IN
1.0
I
N 0.5
C
H
0
E
S 0.5
1.0
SM512DBX
no lens
w/L52 lens
0
6
12
18
24
30
DISTANCE TO 90% WHITE TEST CARD--INCHES
Model SM512DBX is a relatively high power, long range proximity mode sensor. It has several times the excess gain of the
SM512DB, but at the cost of slower response time. It should be used in all proximity mode applications where it is certain that
the 10-millisecond response time is not so slow as to cause the sensor to "miss" the object (the sensor must also see the absence
of the object for at least 10 milliseconds in order to turn off). An important advantage of the SM512DBX is that the repeatability
of the response time is extremely good (0.3 milliseconds), so it is sometimes possible to use this slower sensor in precise positioning
controls. The range of the SM512DBX may be extended to 24 inches by using the optional model L52 lens block.
SM512LBD
SM512LBDX
Divergent
diffuse
mode
VOLTAGE: 10-30V dc
1000
E
X
C 100
E
S
S
SM512LBD,
SM512LBDX
Range based on 90%
reflectance white
test card
G
A
10
II
N
SM512LBD
SM512LBDX
0.9
0.6
I
N 0.3
C
H0
E
S 0.3
0.6
0.9
SM512LBDX
RANGE:
LBD 3 inches (7,6 centimeters)
1
.1 IN
1 IN
10 IN
DISTANCE
100 IN
0
2
4
6
DISTANCE TO 90% WHITE TEST CARD--INCHES
LBDX 6 inches (15 centimeters)
RESPONSE TIME:
Models SM512LBD and SM512LBDX are short-range divergent diffuse mode sensors with an
LBD 1 millisecond
extremely wide field of view. Because of their wide angle of view, they will reliably sense
LBDX 10 milliseconds
transparent objects such as glass or plastic bottles and clear cellophane or poly bags at distances of
REPEATABILITY:
LBD 0.1 millisecond
up to 2 or 3 inches (respectively), even when the object is at an angle to the sensing beam. Most other
proximity mode sensors will sense these objects (at even greater ranges) if the object is perpendicular
LBDX 0.3 millisecond
to the sensing beam, but at relative angles of even a few degrees the returned light is reflected off in a
SENSING BEAM: infrared, different direction and never returns to the sensor.
Both models are well-suited to applications where the object will appear within a few inches of the sensor, but where a background object
(perhaps more reflective than the object being sensed) makes differentiating between the two difficult. In this respect, the wide angle
optics of these sensors serves the same purpose as a convergent sensor. Note that the SM512LBD is "blind" to objects passing very close
to the lens. The SM512LBD has somewhat lower excess gain but a faster (1 ms) response time. See excess gain curves.
2
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