E3G-L1/L3

E3G-L1/L3

10

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.

1

2

3

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

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

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.

Output ON range

The output is ON between the

sensor and La.

E3G-L

The output is ON between the

sensor and La.

E3G-L

Object

The output is ON between La and

Lb.

E3G-L

ON

OFF

D-ON L-ON

Output ON range

Threshold a (La)

Background

ON

ON

Threshold a (La)

Background

Object

Threshold a (La)

ON

Background

Threshold b (Lb)

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-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.