Stability Indicator; Distance Adjustment - Panasonic CX-400 Series Manual

24
Compact Photoelectric Sensor
PRECAUTIONS FOR PROPER USE
CX-44□

Stability indicator

• Since the CX-44□ use a 2-segment photodiode as its
receiving element, and sensing is done based on the
difference in the incident beam angle of the reflected
beam from the sensing object, the output and the
operation indicator (orange) operate according to the
object distance.
Further, the stability indicator (green) shows the margin
to the setting distance.
Sensor
Output (operation indicator)
(BGS mode, In case of Detection-ON)
Stability indicator Stable operating condition
Unstable operating condition
BGS/FGS functions
• This sensor incorporates BGS/FGS functions. Select
either BGS or FGS function depending on the positions of
the background and sensing object.
BGS function
• This function is used when the sensing object is
apart from the background.
Sensing
object
FGS function
• This function is used when the
sensing object contacts the
background or the sensing object is
glossy, etc.
• Please use the FGS function
together with a conveyor or other
background unit.

Distance adjustment

• When this product is used, be sure to carry
out the distance adjustment.
• Since the distance adjuster of this sensor is
a 5-turn adjuster, when the point
adjusted as explained in the table right, there
may be more than 1 turn between the point
and . Therefore, make sure to remember the
B
turns of both points to find the optimum position.
• Be sure to wire the sensing mode selection
input (Pink / 2) before distance adjustment.
If the wiring is done after the distance
adjustment, the sensing area is changed.
• Turn the distance adjuster gradually and lightly with a
"minus" screwdriver (purchase separately). In order to
protect itself, the distance adjuster idles if turned fully.
If the adjuster is idled when distance adjustment is done,
carry out the adjustment again.
CX-400
SERIES Ver.2
Setting distance
Sensing object
Stable operating condition
Sensing
object
Background
and
A
When using the BGS function
<When a sensing object is moving right or left to the sensor>
Step
Turn the distance adjuster fully counterclockwise
to the minimum sensing range position.
1
(CX-441□/443□/444□: 20 mm
CX-442□: 40 mm
Place an object at the required distance from the
sensor, turn the distance adjuster gradually
2
clockwise, and find out point A where the sensor
changes to the detecting condition.
Remove the object, turn the adjuster clockwise
ON (Lights up)
further until the sensor goes into the detecting
OFF (Lights off) state again. Once it has entered, turn the
distance adjuster backward until the sensor
Lights up
returns to the non-detecting condition. This
position is designated as point B . When the
Lights off
sensor does not go into the detecting condition
3
even if the adjuster is turned fully clockwise, the
position where the adjuster was fully turned is
regarded as the point B .
There may be more than 1 turn between point
A and B , since this sensor incorporates a
5-turn adjuster.
The optimum position to stably detect objects is
4
the center point between A and B .
<When a sensing object is approaching / moving away from the sensor>
• Follow only steps
change depending on the sensing object, be sure to
check the operation with the actual sensing object.
When using the FGS function
• Please use the FGS function together with a conveyor or other background unit.
Step
Turn the distance adjuster fully clockwise to the
maximum sensing range position.
(CX-441□/443□: 50 mm
1
CX-444□: 100 mm
CX-442□: 300 mm
In the state where the sensor detects the
background, turn the distance adjuster gradually
counterclockwise, and find out point A where
2
the sensor changes to the non-detecting
condition.
Place an object at the required distance from the
sensor, turn the adjuster counterclockwise further
until the sensor goes into the non-detecting
is
B
condition again. Once entered, turn the distance
adjuster backward until the sensor returns to the
A
detecting condition. This position is designated
as point B . When the sensor does not go into
3
the non-detecting condition even if the adjuster is
turned fully counterclockwise, the position where
the adjuster was fully turned is regarded as the
point B .
There may be more than 1 turn between point
A and B , since this sensor incorporates a
5-turn adjuster.
The optimum position to stably detect objects is
4
the center point between A and B .
Others
• Its distance adjuster is mechanically operated. Do not
drop; avoid other shocks.
Description
0.787 in approx.,
1.575 in approx.)
and . Since the sensing point may
1 2
Description
1.969 in approx.,
3.937 in approx.,
11.811 in approx.)
Optimum
position
Distance
adjuster
Turn fully
Optimum
position
Distance
adjuster
Turn fully