普林柯 PRINCO：射頻導(dǎo)納物位控制器
L2000-220AVC-L843
L2000-220VAC/L843/150MM-450MM
L2000-220VAC/L843W/300-23.5M
Description
The 42JS VisiSight family of sensors offers a full range of sensing
modes in miniature rectangular housing. Visible light source is offered
in all models for ease of alignment. Additional transmitted beam
infrared status-indicator source models are offered for excellent
crosstalk immunity.
The 42JS VisiSight family provides an indication if the sensor operation
is unstable. An indicator flashes if the ** level is too close to the
detection threshold. This indicator helps in easy alignment of the sensor
and forewarns against detection of a background.
Features
 Visible light source that is offered on all models for ease of
alignment
 Optional snap-on adapter for 18 mm mounting
 Patented ASIC design offers linear sensitivity adjustment,
stability indication, and excellent noise immunity
 Compact sealed housing and cavity-free design to minimize
collection of dust and debris while allowing for easy sensor
cleanup
 Threaded metal M12 or M8 connector on pigtail
 360° visible status indicators
 Additional transmitted beam models available with Infrared
light source for excellent cross talk immunity
 Input to disable light source on transmitted beam emitter
1. Verify that the sensitivity knob is set at its maximum (factory
default) setting.
2. Pan the sensor to the left, right, up, and down to center the beam on
the sensed object (for diffuse), reflector (for retroreflective), or
transmitter (for transmitted beam). Affix the sensor position when
the green status indicator is ON (not flashing) and the yellow
output indicator is ON (light sensed and L.O. output energized).
This configuration assures a good margin and that the **
received is greater than twice the ** that is required to energize
the L.O. output.
3.
a. For diffuse applications, remove the object being sensed and
observe the green status indicator. If the green indicator is
flashing (at 6 Hz), the sensor is receiving more than half the
** required to energize the L.O. output when there can be
minimal or no received **. It indicates that the sensor is
getting close to detection of the background. Stability can be
optimized by reducing the reflectivity of the background or
reducing the sensitivity. Reduce the sensitivity to shorten the
sensing range. If sensitivity is reduced, check that both the green
and yellow indicators are on when the object is detected (step 2).
In applications where the full range is needed, for example,
sensitivity cannot be reduced, the green indicator can be left
flashing.
b. For retroreflective and transmitted beam applications, place the
object to be sensed in the beam path and observe the green
indicator. If the green indicator is flashing (at 6?Hz), that sensor
is receiving more than half the ** required to energize the
L.O. output when there can be minimal or no ** received. It
indicates that the object being detected is letting some light go
through (semi-transparent or too small). Adjust sensitivity and
repeat step 2.
Crosstalk Avoidance
For applications of transmitted-beam sensors which require adjacent
pairs to be mounted close, use the red indicator and infrared indicator
pairs as adjacent pairs.
The following spacing (center to center) between the adjacent pairs can
be maintained to avoid crosstalk:
1. Red indicator pair that is adjacent to the infrared indicator pair:
a. 60 mm (2.4 in.) for sensing range up to 1.6 m (4.8 ft)
b. 20 mm (0.8 in.) for sensing range greater than 1.6 m (4.8 ft)
2. Two adjacent pairs of red indicator models or two adjacent pairs of
infrared indicators: 360 mm (14 in.)

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