E3G-L12 Datasheet, PDF (9/17 Pages) Omron Electronics LLC – Distance-setting Photoelectric Sensor

E3G-L1/L3
E3G-L1/L3
J ADJUSTMENTS
If the sensor is not in stable operation due to color differences, make a fine adjustment of the threshold level and confirm that the sensor
operates in stable state. Refer to Manual Teaching (Fine Distance Setting.
Adjustment Steps
1 Install, wire, and turn on the sensor.
2 Perform distance setting (teaching). Refer to Distance Setting (Teaching) below.
3
Make a fine adjustment of the threshold, if necessary.
Refer to Manual Teaching (Fine Distance Setting)
4 Check that the mode selector is set to RUN.
Distance Setting (Teaching)
Select the most appropriate teaching method in reference to the following descriptions.
Application
1
$ Teaching without sensing
objects (i.e., Teaching the
background).
2
3
$ Detection of slight differences
$ ^{in surface level.}
Setting a threshold in the
middle between the
background and sensing object
for operation.
$ Detection of glossy objects in
front of the background.
Teaching
1
Normal one-point teaching
2
Normal two-point teaching
3
Zone one-point teaching
Setting method
Press the TEACH button with
the background object.
present.
Sensor
Press the TEACH button with
the background object and
with the target object.
Sensor Sensor
Press the TEACH button with
the background object
(conveyor, etc.).
Sensor
Object
Set threshold
Background
Threshold (a) is set immediately in
front of the background.
The output is ON between the
sensor and La.
Background
Background
Threshold (a) is set approximately
in the middle between the
background and target object.
The output is ON between the
sensor and La.
Background
A pair of thresholds, (a) and (b),
are set.
The output is ON between La and
Lb.
Output ON range
ON
E3G-L
ON
Threshold a (La)
Background
E3G-L
Object
D-ON L-ON
ON OFF
Threshold a (La)
Background
OFF ON
ON OFF
E3G-L
Threshold a (La)
Background
Threshold b (Lb)
La: Distance equivalent to threshold (a)
Lb: Distance equivalent to threshold (b)
The following settings are also possible:
Setting the maximum sensing distance of the sensor: Maximum distance setting.
Setting the minimum differential travel of the sensor: Minimum distance setting.
Distance from sensor to background must not exceed the values shown below during
normal one-point or zone one-point teaching.
Part number
Distance from sensor to background
E3G-L1j
32 mm (1.26 in) min.
E3G-L3j
55 mm (2.17 in) min.
Maximum sensing distance of E3G-L3 type may differ by color of the target object
when setting distance is more than 150 mm (5.91 in).
Confirm the operation of the sensor before actual operation.
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