In addition to our unique APC circuit used in the

E3X-DA-N Amplifiers to compensate for the dete-

rioration of the LED, the E3X-DA-S uses 4-ele-

ment LEDs to counteract the deterioration of the

light-emitting elements over time and achieve the

industry's most stable long-term detection perfor-

mance.

Furthermore, the circuit is designed with excess

light capacity, so the Sensors can be used with

high stability regardless of whether the APC cir-

cuit is ON or OFF.

With the Twin-output Amplifiers, output 2 can function as an

alarm output (light level operation) to indicate when the light

level has changed due to dirt or other causes.

Time

Time

OMRON provides the industry's most stable long-term detection

by using new 4-element LEDs and an APC (Auto Power Control) circuit.

Time

Without APC circuit

Without APC circuit

3-element LED and APC

4-element LED and APC

Earlier Method

New Method

Time

Light Level Operation

(Normal Operation)

Judges light level changes by comparing

the incident level and threshold level.

Differential Operation

Judges light level changes by comparing the

incident level to a time-averaged incident level.

Threshold level

(absolute value)

Light level difference

(absolute value)

Incorrect operation due to light level change

The light level varies due to dirt, temperature

variations, or other environmental factors.

Detecting differences in the light level enables

setting more subtle light level differences.

Incident

level

Incident

level

Output

ON

OFF

Time

Time

2000

1000

Threshold 1

Threshold 2

The counter function can output signal after counter

counts up or down.

(Advanced External-input Models)

Counter Function

Highest Level of Stability

Stable, Long-term Performance with OMRON's APC Function

Many Advanced Functions for Even More Applications

Patent Pending

Patent Pending

Incorrect operation

Minute changes are

detected reliably.

Area output function can be

used for range judgement.

(Advanced Twin-output Models)

Remote input function can control the Sensor remotely.

(Advanced External-input Models)

Provides high-speed response for miniature workpieces, such as chip parts and devices with short tact times.

Operations that required multiple Sensors, such as

height measurement, can be performed with just one

Sensor. Two threshold levels can be set to easily output

within-range and out-of-range outputs.

A counter function is built-in, so the number

of workpieces can be counted without a sep-

arate counter or small PLC that used to be

required.

OFF. This model is ideal for diverse needs, such as checking Sensor operation remotely before operation

or making settings remotely because teaching has to be performed often for frequent workpiece model

changes.

Fastest in the Industry

Three kinds of timer functions are supported. The timers can be set between 1 ms and 5 s.

A one-shot timer is supported in addition to the ON-delay and OFF-delay timers.

The Amplifier's ON time can be fixed, which is useful during high-speed workpiece detection.

Discriminating Tablet Lengths

Detecting Seals

Detecting Leads on Electronic Parts

Detecting Chip Components

6

7

This operation mode uses a special OMRON algorithm to compensate for slight light level changes

due to dirt or temperature variations and detect only the light level changes due to the workpiece.

Area output

Incident

level

Time

Counter

Time

Up Counter

Down Counter

Counter

Counter

value

Time

Threshold

level

Output when count reaches SV.

Output when count reaches 0.

Alarm output

threshold

Alarm output

Long-term stability

Slight light level changes can be detected with stability and

precision, eliminating the need for time-consuming manual ad-

justments for light level changes.

Compensate for the effects of contaminants and temperature variation

with differential operation mode. (Advanced Models)

Detecting marks in a dusty environment

Detecting knots in thread