Confocal Fiber Displacement Sensor ZW Series
The 24
×
24
×
64-mm
Sensor
Head redefines the meaning of ultra-compact
New
Right-angle type
Standard Feature
»
Ultra-compact and Ultra-lightweight
»
Stable Measurements for Any Material
»
Robust Sensor Head Structure
2
Goes beyond traditional displacement sensor
concepts with a new confocal principle.
Displacement Sensors are indispensable
in non-contact measurement of heights,
thicknesses, and other dimensions in
machine operation control. However,
building them into the system has always
presented problems. The Confocal Fiber
Displacement ZW Series Sensor solves
these problems in ways that were not
possible with traditional triangulation.
The ZW-series Sensors provide the
compact size, light weight, immunity to
electrical/magnetic noise, and other
features to make them ideal for solving
installation space problems.
And OMRON’s new confocal principle
provides the measurement resolution
that is needed for operation control.
The ZW Series solves the problems that
came with laser triangulation, such as
deviations between different materials
and inclination tolerance.
Two Types of Sensor Heads
Straight type
Right-angle type
Expanded
Communications
Standard-feature
EtherCAT
Measurin
Measuring
center dist
distance
（mm）
40
P.
10
ZW
ZW-S40
ZW
ZW-S30
ZW
ZW-S20
ZW
ZW-S07
ZW S
ZW-SR20
ZW-SR20
ZW-
SR07
ZW-SR07
ZW-SR
7
ZW-SR07
7
ZW-SR40
Standard-feature EtherNet/IP ™
30
20
7
0
-EtherCAT
®
is a registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.
-EtherNet/IP™ are the trademarks of ODVA.
-ATI™, Radeon™ are trademarks of Advanced Micro Devices, Inc. in USA.
-Sysmac is a trademark or registered trademark of OMRON Corporation in Japan and other countries for OMRON factory automation products.
-Microsoft, Visual Basic, and Windows are either registered trademark of Microsoft Corporation in the United States and other countries.
-Other company names and product names in this document are the trademarks or registered trademarks of their respective companies.
3
The Three Benefits of OMRON’s White Light Confocal Principle
Ultra-compact and
Ultra-lightweight
The slim design measures only 24 × 24 mm.
It weighs only 105 g. This incredibly compact
size could not be achieved with traditional
triangulation. Any objects can be measured
with the Sensor mounted perpendicular to
them to save even more space.
P.
4
Stable Measurements for
Any Material
ss
Gla
Mir
S
SU
ror
am
cer
ite
Wh
ic
te
stra
Sub
You can measure objects of any material or
color at the same position. 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
Robust Sensor
Head Structure
No electronic
parts.
The sensor head design maintains reliable
operation in installations with electronic and
magnetic noise. Devices in close proximity
will not be affected by noise or heat from the
sensor head or fiber cables due to their
advanced design.
P.
8
4
Ultra-compact and Ultra-lightweight
Utilize Narrow Spaces in Machines
The 24 × 24-mm Sensor Head fits easily into essentially any machine.
Triangulation sensor
Height
Contr
ol
of a
Control of
ntrol
Dispenser Nozzle
Dispense
r
No
ser
Volu
Volume
rat
ratio
1/8 *
Weig
Weight
rat
ratio
1/8 *
/
*In-house comparisons.
24mm
24mm
64mm
Mounting area Reduced to 1/7*
*In-house comparison.
With traditional triangulation, it was necessary to use either diffuse reflec-
tion or regular reflection depending on the material. However, the confo-
cal principle used for the ZW Series eliminates the need to change the
Sensor installation even if the material changes.
Traditional Triangulation Model
Diffuse-reflective
Sensor
Regular-reflective
Sensor
ZW Series
The Sensor can be installed
perpendicular to the object
regardless of the material.
Thickness Measurement
s Me
of
a
Metal
Tub
e
Tube
b
Substrate
Glass
Substrate
Glass
Installation in Tight Spaces
Space restrictions, heat generation, and mutual interference often prevent side-by-side installation of
many traditional triangulation sensors. The compact, non-heat generating ZW-series Sensor Head
ad
eliminates these problem. Furthermore, the right-angle type Sensor Head can be installed in a limited
space over workpieces without a turning mirror.
The traditional sensors generally measure the thickness of a workpiece by calculating the difference
between the heights of the stage and the top surface of the workpiece. The ZW-series Sensor Head
can be installed in the small space under the stage to directly measure the height from the top and
bottom surfaces of the workpiece, which enables more accurate thickness inspection.
Minimum pitch
24 mm
Thickness Inspection of
Small Electronic Parts
5
Smooth Movement and Stopping
Using power cylinders to move sensors to measurement positions
only when necessary so that the sensors do not interfere with machine
motion resulting in delays in measurements while waiting for settling
time if
the
sensors
are heavy. A ZW-series Sensor Head, however,
sensors
ar
e
heavy.
ZW-series
Sen
sor
ti
me
i
nsor
s
heavy.
W
e
howe
ver,
e
weighs only 105 g so that measurements can be made as soon as the
tha
t
me
asur
emen
ts
can
be
made
as
so
hat
measu ments
m
cylinder operation stops.
cylinder
ope
d
peration
ZW Series
Time
Degree of
oscillation
Moved.
Degree of
oscillation
Stopped.
Bonding Height Inspe
Inspection
Traditional Triangulation Model
Time
Flexible
Flexible Fiber Cable for Easy Installation
Th
e Contro
ller
c
The Controller connects to the
Controll
er
Sensor Head with a 2-mm-diam-
S
ens
o
e
Se
ns
or
Head
wit
nsor
eter Flexible Fiber Cable. The
Flexi
bl
e
Fib
i
ble
Fib
Cable has cleared a bending test
has
cl
eare
a
clea
re
consisting of 2,000,000* repeti-
g
of 2,0
2,0
tions for
re
liab
le
application on
reliable
tion
s
ti
ons
fo
r
reli
able
moving parts.
wit
*Cable was tested with OMRON’s bending
2,00
test consisting of 2,000,000 bends to a 70-mm
1
bending radius and 1,000,000 bends to a
radiu
20-mm bending radius.
Ultra-
thin
Cable
Cable diameter: 2 mm
Minimum bending radius: 20 mm
R
Installation in a
Cable Carrier
Cable Extendable to 32 m
Exten
An Extension Fiber Cable can be used between the Sensor Head and Controller to extend the distance to up to
F
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
r
Controller
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