E3XDA51S2M Datasheet, PDF (4/35 Pages) Omron Electronics LLC – Evolution and Perfection The next-generation platform for a wide range of sensing

Stable, Long-term Performance with OMRON's APC Function
OMRON provides the industry's most stable long-term detection ^{Highest Level of Stability}
by using new 4-element LEDs and an APC (Auto Power Control) circuit.
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.
Earlier Method
3-element LED and APC
Without APC circuit
New Method
4-element LED and APC
Long-term stability
Without APC circuit
Time
Time
Compensate for the effects of contaminants and temperature variation
with differential operation mode. (Advanced Models)
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.
Slight light level changes can be detected with stability and
precision, eliminating the need for time-consuming manual ad-
justments for light level changes.
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.
Patent Pending
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.
Detecting marks in a dusty environment
Threshold level
(absolute value)
Incorrect operation due to light level change
Time
The light level varies due to dirt, temperature
variations, or other environmental factors.
Incorrect operation
Alarm output
Detecting knots in thread
Alarm output
threshold
Light level difference
(absolute value)
Time
Detecting differences in the light level enables
setting more subtle light level differences.
Minute changes are
detected reliably.
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Many Advanced Functions for Even More Applications
Fastest in the Industry
Detecting Leads on Electronic Parts
Provides high-speed response for miniature workpieces, such as chip parts and devices with short tact times.
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.
Area output function can be
used for range judgement.
(Advanced Twin-output Models)
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.
Area output
Incident
level
2000
1000
Output
ON
OFF
Threshold 1
Threshold 2
Time
Remote input function can control the Sensor remotely.
(Advanced External-input Models)
Input signals can make various remote settings, such as teaching operations, power tuning, and emitter
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.
The counter function can output signal after counter ^{Patent Pending}
counts up or down.
Counter Function
(Advanced External-input Models)
Up Counter
Down Counter
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.
Incident
level
Incident
level
Threshold
level
Counter
Time
Counter
Time
Counter
value
Time
Time
Discriminating Tablet Lengths
Detecting Seals
Detecting Chip Components
Output when count reaches SV.
Output when count reaches 0.
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