2
Proximity Sensors for Welding Processes E2EW Series
Catches it all,
whether it’s iron or aluminum
PREMIUM Models
OMRON’s full metal body proximity sensors deliver
Quadruple distance model
Exceptionalsensing range
Equivalent
for iron and aluminum
Less design work
sensing distances
12
*
1
12 mm
〈M18〉
〈
M18
〉
mm
P.4
Better operation rates
The E2EW Proximity Sensor offers equivalent sensing distances for both iron and aluminum. This
means that a common design can be adopted to detect the sitting of both iron and aluminum
workpieces in welding processes. It also boasts the exceptional sensing range, which means
fewer false detections and thereby fewer unexpected stoppages. It is equipped with a function,
which effectively cancels pulse noise of current magnetic field generated during welding. *
2
*1. Based on December 2019 OMRON investigation. *2. PREMIUM Models only.
BASIC Models
In addition to our PREMIUM Models, we also offer
short-distance BASIC Models to meet various facility
design requirement specifications.
Single distance model
odel
e
5 mm
M18
〉
〈
*For BASIC Models, the sensing distances for aluminum are approximately one third of those for iron.
Refer to the
Engineering Data
on the datasheet.
4
Proximity Sensors for Welding Processes E2EW Series
PREMIUM Models
Equivalent sensing distances
for iron and aluminum
<exceptional sensing range of 12 mm>
*
1
Enables facility design with fewer unexpected stoppages even in lines with both iron and aluminum workpieces
*1 Based on December 2019 OMRON investigation. Applies to M18 quadruple distance models.
Iron workpieces
Aluminum workpieces
7
mm
about
2
mm
12
mm
E2EW
* M18 quadruple distance models
For both iron and
aluminum workpieces
* M 18 models
Approximately double
*
the sensing distance of previous models
Sensing distance comparison
Shielded
＊2
2
<quadruple distance models>
Exceptional
sensing range
*
3
M18
7 mm
E2EW
Previous models
Aluminum
12 mm
12 mm
lron
E2EW
(equivalent for iron and aluminum)
M30
E2EW
22 mm
*2. Comparison with E2EF products. *3. Based on December 2019 OMRON investigation.
5
Less design work
Enables common design for lines with
both iron and aluminum
Previously, in order to stably detect sitting in mixed production
lines containing both iron and aluminum, facility designs needed
to accommodate sensors of different sizes for different sensing
distances. With the same sensing distance for iron and
aluminum, E2EW Proximity Sensors eliminate the need to
change sensors according to workpieces, enabling the
standardization of production facilities and mechanical drawings.
Previous models
Design for iron detection
7 mm
E2EW
Design for aluminum detection
7 mm
Sensing distance
12 mm
*
4
M18
M30
M18
Installation design must accommodate two sensor sizes
Standardized design with a
single one-size model
Allows for more spacious sensor installation design
With previous models, to avoid false detections, you were forced to adopt sensor installation designs
that risked contact. The E2EW Proximity Sensor, with the exceptional sensing range, can detect
accurately from a certain level of distance, which means you can adopt designs with more space to
reduce the risk of contact.
*4. Quadruple distance models.
Better operation rates
Reduces unexpected stoppages due to false detections
E2EW Proximity Sensors can detect both iron and aluminum from equally long distances. This longer detection margin
means less false detections, even if workpieces are moved from their intended sitting positions. Furthermore, the sensors’
installation distances do not need to be strictly adjusted, making them easy for anyone to install.
Previous models
Workpieces not in their exact sitting
positions would cause false detections,
leading to facility stoppage
E2EW
Long-distance detection means
improved detection margins,
enabling stable detection even
when a workpiece gets away
Stable
detection
*
5
False
detection
7㎜
Sitting position confirmation
12 ㎜
*5. Embeddable triple-distance models are also available.
Refer to page17 for details.
Omron's unique technologies provide equivalent long sensing distances for both iron and aluminum
The problem of previous full-metal body proximity sensors was the short sensing distance. E2EW Proximity Sensors are equipped with
Omron's unique technology for suppressing noise influence as well as the PRD
*
6
technology. The technologies reduce the influence of
noise, enabling the extended sensing distance. Furthermore, equivalent long distance detection for iron and aluminum is possible by
adjusting the timing and time to detect current changes of sensing objects.
Technology for suppressing noise influence
Patent Pending
*
7
Random timing of pulsed current reduces the periodic noise
effect on the detection signals.
Randomized timing
Pulsed current
Time
Periodic noise
Current changes generated from
sensing objects are averaged and
extracted as the detection level.
Long sensing distances for
both iron and aluminum
Time
Aluminum
Iron
Timing and detection time
are adjusted to keep the
detection level the same.
Detection
level
*6. PRD (Pulse Response Detection) is a technology to detect current changes of sensing objects when pulsed currents are applied to coils.
*7. “Patented pending” means that we applied for a patent in Japan, and “Patented” means that we obtained a patent in Japan. (As of June 2019)
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