E3G-L1/L3E3G-L1/L3
10
JADJUSTMENTS
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
1Install, wire, and turn on the sensor.
2Perform distance setting (teaching). Refer to Distance Setting (Teaching) below.
3Make a fine adjustment of the threshold, if necessary.
Refer to Manual Teaching (Fine Distance Setting)
4Check that the mode selector is set to RUN.
Distance Setting (Teaching)
Select the most appropriate teaching method in reference to the following descriptions.
123
Application
$Teaching without sensing
objects (i.e., Teaching the
background).
$
$
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 1Normal one-point teaching 2Normal two-point teaching 3Zone one-point teaching
Setting method
Press the TEACH button with
the background object.
present.
Sensor
Background
Press the TEACH button with
the background object and
with the target object.
Sensor
Background Background
Sensor
Object
Press the TEACH button with
the background object
(conveyor, etc.).
Background
Sensor
Set threshold
Threshold (a) is set immediately in
front of the background.
Threshold (a) is set approximately
in the middle between the
background and target object.
A pair of thresholds, (a) and (b),
are set.
The output is ON between the
sensor and La.
E3G-L
The output is ON between the
sensor and La.
E3G-L
The output is ON between La and
Lb.
E3G-L
ON OFF
D-ON L-ON
utput
range
Threshold a (La)
Background
ON
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ON
Threshold a (La)
Background
Object
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Threshold a (La)
ON Background
Threshold b (Lb)
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ON OFF
OFF
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-L1j32 mm (1.26 in) min.
E3G-L3j55 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.