Sensitivity Adjustment; Special Hints - Omron F3C-AL Datasheet

Sensitivity Adjustment

Item
Adjustment Place the detected object at the de-
procedure sired location and turn the LIGHT indi-
cator (red) lights. This is position A
Detecting
condition
Photoelectric
sensor
Status of dis-
tance
setting
knob
Indicators
OFF
STABILITY
(green)

Special hints

Recommended adjustment
To assure stable working conditions the green stability LED should
be always turned on.
The green LED displays two stability conditions:
1. Output stable ON (red LED on)
2. Output stable OFF (red LED off)
Best performance can be achieved if the sensing object is located
closer than -10 % of the setting distance or the shiny background is
fixed +10 % behind the switching position.
A-182
Position A
Background object
Remove the detected object and turn
the adjustment knob clockwise until the
LIGHT indicator(red) lights. This is the
position B.
Then turn the adjustment knob coun-
terclockwise until the LIGHT indicator
(red) goes out. This is position C.
No Background object
The maximum adjustment setting is
used as position C.
A
A
ON
LIGHT
(red)
Position B and C
Photoelectric
sensor
C B
C
B
OFF OFF
STABILITY LIGHT
(green) (red)
Setting
Set the adjustment to halfway between
A and C. Confirm that the STAB indica-
tor (green) remains lit both with the de-
tected object present and not present.
If the STAB indicator does not remain
lit, review the detection method to en-
able stable operation.
A
C
ON OFF
STABILITY
(green)
Standard Photoelectric Sensors
LIGHT
(red)