A-152

Photoelectric Sensors

Precautions

Design

Fuzzy mutual interference prevention

When reflective photoelectric sensors are installed side by

side, one sensor may receive the light from the other sensor,

which may disturb the incident signal, causing a malfunction.

The fuzzy mutual interference prevention monitors interfering

light for a predetermined period of time before light is emitted,

and imports the interfering light level and incident frequencies

as data. Using these values, fuzzy inference is made to find

the risk of malfunction to control the light emitting timing, re-

ducing the risk.

(When risk is low)

Light is emitted after interfering light is gone.

(When risk is high)

Light is emitted after shifting to a gap of interfering light.

Wiring Considerations

Cable

• An oil-resistance cable is used to ensure oil resistance.

• The bending radius should be 25 mm or more.

Installation

Sensor installation

• Note that during the E35-C installation, hammering it will

damage the water resistance function.

• Use an M4 screw, tightened to a torque of no more than

1.18 Nm.

(When using the mounting bracket)

• To set the sensor on the mechanical axis, use the optical

axis locking holes.

• When the sensor cannot be set on the mechanical axis,

move the E3S-C vertically and/or horizontally and set it in

the center of the area where the incident indicator is turned

ON. Make sure that the stability indicator is ON.

(Direct installation)

Install the E3S-C as shown below.

[M4 screwing]

[M3 screwing]

Optical axis adjustment

(Optical axis locking holes)

By fitting screws into the optical axis locking holes, the mount-

ing bracket is set onto the mounting shaft of the mounting

bracket.

For adjustment

Correct Use

Emission

pattern

Light

interference

Emission

pattern

Light

interference

Two, 4.5 dia.

through holes

M4

M4 hole

M4 hole

2-M3

M4 hole

M4 hole

M3

Optical

axis

Mounting axis

Four M4 optical axis lock holes