Datasheet > Q60VR3LAF2000

Q60VR3LAF2000

更新时间： 2022-02-26 11:46:24

品牌	Logo	应用领域
邦纳 - BANNER		/
页数	文件大小	规格书
12页	403K
描述
Q60LAF Series Laser Adjustable-Field Sensors

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Q60VR3LAF2000 数据手册

Q60LAF Series Laser Adjustable-Field Sensors

To maximize contrast, posiꢁon the lightest possible background to be used, at the closest posiꢁon it will come to the sensor during use.

Using a small screwdriver in the adjustment screw, adjust the cutoﬀ distance unꢁl the threshold is reached and the green Light Sensed

indicator changes state. If the indicator never turns ON, the background is beyond the maximum sensing cutoﬀ and will be ignored.

Note the posiꢁon of the rotaꢁng cutoﬀ posiꢁon indicator at this posiꢁon. Then repeat the procedure, using the darkest target, placed in

its most distant posiꢁon for sensing. Adjust the cutoﬀ so that the indicator is midway between the two posiꢁons.

Target

Background

Farthest Target Object

RANGE

Set Cutoff Midway

Between

Closest Background

DELAY

OFF

DELAY

SIG

Cutoff

Distance

Figure 3. Set the cutoﬀ distance approximately midway between the

farthest target and the closest background

Figure 4. Seꢂng the cutoﬀ distance

Note: Seꢀng the cutoﬀ distance adjustment screw to its maximum clockwise posiꢁon places the receiver lens

directly in front of the receiver elements and results in the Q60 performing as a long-range diﬀuse sensor.

Sensing Reliability

For highest sensiꢁvity, the sensor-to-object distance should be such that the object will be sensed at or near the point of maximum

excess gain. The excess gain curves show excess gain versus sensing distance for 200 mm, 1200 mm, and 2 m cutoﬀs. Maximum excess

gain for a 200 mm cutoﬀ occurs at a lens-to-object distance of about 150 mm, and for a 2 m cutoﬀ, at about 500 mm. The background

must be placed beyond the cutoﬀ distance. Following these two guidelines makes it possible to detect objects of low reꢄecꢁvity, even

against close-in reꢄecꢁve backgrounds.

Background Reꢁecꢀvity and Placement

Avoid mirror-like backgrounds that produce specular reꢄecꢁons. A false sensor response occurs if a background surface reꢄects the

sensor's light more to the near detector (R1) than to the far detector (R2). The result is a false ON condiꢁon (Figure 5 on page 4).

Correct this problem by using a diﬀusely reꢄecꢁve (maꢂe) background, or angling either the sensor or the background (in any plane) so

the background does not reꢄect light back to the sensor (Figure 6 on page 4). Posiꢁon the background as far beyond the cutoﬀ

distance as possible.

An object beyond the cutoﬀ distance, either staꢁonary (and when posiꢁoned as shown in Figure 7 on page 5), or moving past the

face of the sensor in a direcꢁon perpendicular to the sensing axis, may cause unwanted triggering of the sensor if more light is reꢄected

to the near detector than to the far detector. Correct the problem by rotaꢁng the sensor 90° (Figure 8 on page 5). The object then

reꢄects the R1 and R2 ﬁelds equally, resulꢁng in no false triggering. A beꢂer soluꢁon, if possible, may be to reposiꢁon the object or the

sensor.

Sensing

Field

Cutoff

Distance

Sensing

Field

Cutoff

Distance

Reflective

Background

Strong

Direct

Reflection

to R1

Core of

Emitted

Beam

Core of

Emitted

Beam

Reflective

Background

Strong

Direct

Reflection

Away From

Sensor

Emitter

Near Detector

Far Detector

Emitter

Near Detector

Far Detector

Figure 5. Reꢀecꢁve Background - Problem

Figure 6. Reꢀecꢁve Background - Soluꢁon

www.bannerengineering.com - Tel: +1-763-544-3164

P/N 114348 Rev. A

1 2 345 6 7...12

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与Q60VR3LAF2000相关器件

型号	品牌	获取价格	描述	数据表
Q60VR3LAF2000Q1	BANNER	获取价格	Q60LAF Series Laser Adjustable-Field Sensors
Q60X25K6TP	LITTELFUSE	获取价格	TRIAC
Q6200D	ETC	获取价格	ASIC
Q6200J	ETC	获取价格	ASIC
Q62607-S60	INFINEON	获取价格	Silizium-Fotoelement Silicon Photovoltaic Cell
Q62607-S61	INFINEON	获取价格	Silizium-Fotoelement Silicon Photovoltaic Cell
Q627002G0078	INFINEON	获取价格	GaAs MMIC (Tri mode power amplifier for AMPS/ CDMA /TDMA portable cellular phones)
Q62701-F51	INFINEON	获取价格	PNP GERMANIUM RF TRANSISTOR
Q62701-F72	INFINEON	获取价格	PNP GERMANIUM RF TRANSISTOR
Q62701-F88	INFINEON	获取价格	PNP GERMANIUM RHF TRANSISTOR

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