KEYENCE PX-10 - Manual (Page 4)

4
Selecting Detection Mode
Detection mode can be set for normal detection or for one of the following two
modes.
●
Edge Detection Mode (Page 6, No. 5)
This mode detects the change in the received light intensity during a given period
of time. This mode can be set to react only to rapid changes in intensity and not
slow changes in intensity.
• Select "Edge detection mode" in page 6, No. 5.
■
Sensitivity setting
Quickly press the button once to set the maximum sensitivity setting. This
completes the setting.
• If the sensitivity is too low, the sensor may sense objects other than the
workpiece. In this situation, increase the value by fine-adjusting the sensitivity
(see "Fine-adjusting Sensitivity" on page 3).
●
Dynamic Sensitivity Correction (DSC) Mode
(Page 6, No. 5)
DSC automatically corrects the setting value according to the changes in the
received light intensity when there is no workpiece (output OFF). This function is
effective when the light intensity difference is small when judging whether or not
there is a workpiece.
• Select "Dynamic Sensitivity Correction" in page 6, No. 5.
■
Sensitivity setting
Sensitivity is set in the same way as for the normal detection mode (page 4) .
The DSC indicator illuminates when DSC mode is set.
• When L-ON is selected, the upper limit of the correctable range is twice as
much as the initial setting value.
• The value is stored in memory even after the power is turned off.
• The DSC indicator blinks when the L/D-ON settings are inadequate or the
amount of light changes drastically with output OFF. Verify the settings again
when the indicator blinks.
Avoiding Effects of Dust and Stains
There are two methods for avoiding the effects of dust and stains. One uses
external input and the other does not. KEYENCE recommends using the method
with external input.
■
Using external input (PX-10/10P only)
Use the external input .to periodically correct the setting value and the display value
When using a thrubeam sensor head:
See "Percent Calibration" (page 3).
When using a reflective sensor head:
See "Zero Shift Function" (page 5).
■
Not using external input
See "Edge Detection Mode" and "Dynamic Sensitivity Correction Mode" (page 4).
●
Using External Input (PX-10/10P only)
Use the following procedure to import a signal from an external device.
1
Select an option other than OFF in the external input function selection (page 6, No. 6).
2
Short circuiting the pink wire for at least 2 ms as shown below (at least 20 ms
for OFF) accepts the signal.
PX-10 PX-10P
• External input settings (external calibration/display scaling) can be changed
up to 1 million times.
• Input is not received while setting each mode.
• When external calibration is selected, external input performs the same
operations as with the button.
■
Sensitivity settings and display scaling settings
Both the sensitivity and the display scaling can be set when using the external input.
In external input function selection (page 6, No. 6), select "External calibration".
In display value correction function selection (page 7, No. 8), select "Display
scaling function".
The following shows an example of use during percent (%) calibration and
display scaling.
Activating Key Lock
The key lock function disables the operation of all keys.
1
Press and hold the button or the button for at least 3 seconds
while holding down the button.
• Use the same procedure to deactivate keylock.
• During the operations shown above where the display shows "Loc", pressing
and holding the button for at least 3 seconds activates key lock mode
with PIN number.
Press the buttons to enter a PIN number between 0 and 9999,
then press the button to activate the key lock. Use the same procedure
to deactivate the function.
Note
Write down the PIN number and store it some place safe so that you do not forget it.
The lock cannot be released if an incorrect PIN number is entered.
Rising edge detection
Detects an increase (rising edge)
in the received light intensity.
Falling edge detection
Detects a decrease (falling edge)
in the received light intensity.
Rising/falling
(both-edge) detection
Detects an increase (rising edge)
and a decrease (falling edge) in
the received light intensity
SET
SET UP/DOWN MODE
SET UP/DOWN MODE
DSC indicator
+V
OV
Brown
Blue
Pink
Brown
Pink
Blue
+V
OV
SET
Input OFF
Input ON
% calibration Display scaling
3 seconds
or less
Input OFF
Input ON
% calibration % calibration
3 seconds
or longer
UP DOWN
MODE
SET UP/DOWN MODE
3 seconds or longer
MODE
UP/DOWN
MODE