ZW Series Confocal Fiber Displacement Sensor
The 24x24x64-mm Sensor Head
redefines the meaning of ultra-compact
» Robust Sensor Head Structure
» Ultra-compact and Ultra-lightweight
» Stable Measurements for Any Material
Omron’s Confocal Fiber Displacement Sensor
that Goes Beyond Triangulation Concepts
with a New Principle
In machine control, displacement sensors are
indispensable for non-contact measurements
of heights, thickness and other dimensions.
However, integrating them into the system
poses challenges such as the size of the
sensor, its weight and noise immunity.
The ZW Series confocal displacement sensor
solves these problems in ways not possible
using traditional triangulation sensors.
They provide the compact size, light
weight, immunity to electrical/magnetic
noise, and other features to make them
ideal for solving installation problems.
OMRON’s new confocal principle provides the
measurement resolution that is needed for
precise control. The ZW Series solves the
problems that are inevitable with laser
triangulation, such as deviations between
different materials and inclination tolerance.
A Wider Selection of Models with the Same Head Size
ZW-S40
Expanded
Communications
Standard-feature
EtherCAT
P.
10
ZW-S20
ZW-S07
ZW-S30
Measuring
center distance
(mm)
40
30
20
7
0
Standard-feature EtherNet/IP ™
Stable
Measurements
for Thin Glass
High precision
2
-EtherCAT® is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.
-EtherNet/IP™ are the trademarks of ODVA.
Omron’s White Light Confocal Principal Offers
Three Unique Benefits
Save Machine Space and
Reduce Settling Time
The slim design measures only 24 X 24 mm. It weighs
only 105 g. This incredibly compact size could not be
achieved with traditional triangulation sensors. Any
object can be measured with the Sensor mounted
perpendicularly to them to save even more space.
P.
4
Stable Measurements for
Any Material
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Measure different materials or color, there is no need
to reposition the sensor. A wide angle characteristic
of
±8°
enables high-resolution measurement of the
position even for large objects with mirror-like
surfaces without being affected by warping.
P.
6
Electrical Noise and Heat
are Not a Problem
No electronic
parts.
The sensor head design maintains reliable operation
in installations where electrical noise exists.
Devices in close proximity to the sensor head or
cable, will not be affected by noise or heat due to the
sensor head's advanced design.
P.
8
3
Ultra-Compact and Ultra-Lightweight
Utilize Narrow Spaces in Machines
The 24 x 24-mm Sensor Head fits easily into essentially any machine.
Triangulation sensor
87% less
Volume & Weight
compared to previous
models*
64mm
*In-house comparisons.
24mm
24mm
Mounting area Reduced to 1/7*
*In-house comparison.
With traditional triangulation sensors, it was necessary to use either diffuse reflection
or regular reflection depending on the material. However, the confocal principle used
for the ZW Series eliminates the need to change the Sensor installation even if the
material changes.
Traditional Triangulation Model
ZW Series
Diffuse-reflective
Sensor
Regular-reflective
Sensor
The Sensor can be installed
perpendicular to the object
regardless of the material.
Height Control of a Dispenser Nozzle
Substrate
Glass
Substrate
Glass
Sensor Installation in a Row with
No Interference
Mutual interference or space restrictions often prevent the
installation of traditional triangulation sensors. The compact
ZW Series sensor heads allow you to install more sensors, in
a row or pattern.
Minimum pitch
24 mm
Non-contact Flatness Inspection of HDD Cases
4
Low Inertia Delivers Smooth and Fast Response
When mounting the measurement sensor to an actuator, the sensor head has a
significant influence. The heavier the sensor, the longer the settling time, which
results in slower production. With the ZW Series sensors, the settling time is
significantly reduced because it weighs 0.23 lbs allowing measurements to start
sooner creating greater tme savings for faster production speeds.
ZW Series
Time
Degree of
oscillation
Moved.
Degree of
oscillation
Time
Stopped.
Bonding Height Inspection
Traditional Triangulation Model
Easy and Flexible Cable Installation
The Controller connects to the Sensor
Head with a 2-mm-diameter Flexible
Fiber Cable. The cable has cleared a
bending test consisting of 2,000,000*
repetitions for reliable application on
moving parts.
Ultra-
thin
Cable
Cable diameter: 2 mm
Minimum bending radius: 20 mm
R
*Cable was tested with OMRON’s bending
test consisting of 2,000,000 bends to a 70-mm
bending radius and 1,000,000 bends to a
20-mm bending radius.
Installation in a Cable Carrier
Cable Extendable to 32 meters
An Extension Fiber Cable can be used between the Sensor Head and Controller to extend the distance to up to 32 m. Attach the Sensor
Head to a moving part and place the Controller in the control panel or other convenient location to achieve a flexible system design.
Standard Fiber Cable
0.3 or 2 m
Extension Fiber Cable
30 m max
.
Connecting adapter
Sensor Head
Controller
5
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