Banner QM26 Series, Инструкция по эксплуатации

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1. Mount the sensor with the darkest object at the longest application
distance. The distance to the object must be less than shown in
Figure 5 on page 10 for your object color.
2. Turn the adjustment potentiometer counter-clockwise until the
yellow indicator turns off (8 turns maximum).
3. Turn the adjustment potentiometer clockwise until the yellow
indicator turns on.
4. Replace the darkest object with the brightest background at the
closest application distance.
5. Turn the adjustment potentiometer clockwise, counting the
revolutions, until the yellow indicator turns on.
6. Turn the adjustment potentiometer counter-clockwise half of the
number of turns from step 5. This places the cutoff distance midway
between the object and the background switchpoints (see Figure 1
on page 4).
The sensor is ready for
operation.
Object Background
Cutoff
Distance
X
Y
X: Distance to the Object
Y: Minimum
Separation Between the Object and
the Background
Figure 1.
Set the cutoff distance approximately midway
between the farthest object and the closest
background
Setup Example
An object with a reflectivity similar to black paper is set 100 mm (3.9 in) away
from the AF200 sensor. A background with a reflectivity similar to white paper
is set away from the sensor. According to Figure 5 on page 10 , the minimum
separation distance between the object and the background is 24 mm (0.94 in).
In this application, reliable detection is achieved when set up according to the
procedure outlined in Sensor Setup - Background Suppression—AFxxx Models
on page 3.
2
Y
3 1
X
Figure 2. Background Suppression Mode Application
Example
1. Object
2. Conveyor
3. Background
X: Distance to the Object = 100 mm (3.9 in)
Y: Minimum Separation Between the Object and
the Background = 24 mm (0.94 in)
Remote Configuration—XLPC models
The remote input wire (pin 2/white wire) is used to to lock the push button, select Light or Dark Operate, or perform the desired Light
SET or Dark SET for the object. In contrast to other Banner Engineering sensors, the QM26 and QMH26 Expert
™
coaxial polarized
retroreflective sensors (XLPC models) use the duration between pull-high pulses on the remote input wire to both initiate the Light SET
or Dark SET and to select the desired sensitivity simultaneously. See Light SET for High Sensitivity on page 5, Light SET for Medium
Sensitivity on page 6, and Dark SET for Maximum Operating Range on page 7 for details.
Note: After the delay before startup has elapsed ( ≤ 300 ms), the remote input may be used.
Push Button Lockout—XLPC Models
The remote input wire (pin 2/white wire) can be used to disable the sensor push button on the XLPC models to prevent unauthorized
adjustment to the sensor. Connect the remote input wire (pin 2/white wire) of the sensor to the +V dc terminal to disable configuration
adjustments using the push button.
QM26 and QMH26 Series Sensors
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