Omron ZX2-LDA41 User manual

Authorized Distributor:
In the interest of product improvement,
specifications are subject to change without notice.
Cat. No. Z310-E1-08
© OMRON Corporation 2015 All Rights Reserved.
OMRON Corporation Industrial Automation Company
OMRON ELECTRONICS LLC
2895 Greenspoint Parkway, Suite 200
Hoffman Estates, IL 60169 U.S.A.
Tel: [phone]/Fax: [phone]
Contact: www.ia.omron.com
Kyoto, JAPAN
OMRON ASIA PACIFIC PTE. LTD.
No. 438A Alexandra Road # 05-05/08 (Lobby 2),
Alexandra Technopark,
Singapore 119967
Tel: [phone]/Fax: [phone]
OMRON (CHINA) CO., LTD.
Room 2211, Bank of China Tower,
200 Yin Cheng Zhong Road,
PuDong New Area, Shanghai, 200120, China
Tel: [phone]/Fax: [phone]
Regional Headquarters
OMRON EUROPE B.V.
Sensor Business Unit
Carl-Benz-Str. 4, D-71154 Nufringen, Germany
Tel: [phone]/Fax: [phone]
0715
Laser Displacement Sensors CMOS Type
Cat. No. Z310-E1-08
Smart Sensors
Smart Sensors
ZX2 Series
ZX2 Series
User’s Manual
User’s Manual

2ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
CONTENTS
Introduction
Meanings of Signal Words. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Meanings of Alert Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Laser Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Precautions for Safe Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Precautions for Correct Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PREPARATION FOR MEASUREMENT
Part Names and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Basic Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Amplifier Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Sensor Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Calculating Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Installing Sensor Heads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Installing the Amplifier Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Connecting Calculating Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Connecting the Sensor Head to the Amplifier Unit . . . . . . . . . . . . . . . . . . . . . . . 28
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Wiring Input/Output Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
I/O Circuit Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
FLOW OF OPERATION
FLOW OF OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
BASIC SETUP
BASIC SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Display of RUN Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Simplest Setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
MAIN APPLICATIONS & SETTING METHODS
Height. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Steps and Warpage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Double Sheet Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

3
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Positioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Eccentricity and Surface Deflection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
DETAILED SETTINGS
Smart Tuning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Selecting the Initial Sub-Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Connecting Two or More Amplifier Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Mutual Interference Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Setting the Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Setting the Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Bank Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Zero Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Scaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Analog Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Output for Non-measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
Setting the Differential Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
External Input for Bank, Timing Input, Reset Input . . . . . . . . . . . . . . . . . . 118
Setting the Detection Surface Selection. . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Key Lock Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Initializing Settings Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
TROUBLESHOOTING
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130
Q&A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
SPECIFICATIONS
Specifications and Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Amplifier Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Sensor Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Sensor Head Extension Cables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Calculating Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Engineering Data (Reference Value). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Angle Characteristic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Linearity Characteristic for Different Materials. . . . . . . . . . . . . . . . . . . . . . . . . . 149
Beam Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Reference: Distance between two diffuse-reflective models that causes malfunc-
tion when mutual interference prevention is turned off . . . . . . . . . . . . . . . . . . . 151
INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
SETTING TRANSITION CHARTS . . . . . . . . . . . . . . 158

4ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Introduction
Thank you for purchasing the ZX2 Series Smart Sensor. This manual provides
information regarding functions, performance and operating methods that are required for
using the sensor.
When using the ZX2 Smart Sensor, make sure to observe the following:
• The ZX2 Smart Sensor must be operated by personnel knowledgeable in electrical
engineering.
• To ensure correct use, please read this manual thoroughly to deepen your
understanding of the product.
• Please keep this manual in a safe place so that it can be referred to whenever
necessary.

5
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Terms and Conditions Agreement
Warranty, Limitations of Liability
Warranties
Exclusive Warranty
Omron’s exclusive warranty is that the Products will be free from defects in materials and
workmanship for a period of twelve months from the date of sale by Omron (or such other
period expressed in writing by Omron). Omron disclaims all other warranties, express or
implied.
Limitations
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED,
ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE OF THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT
ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE
REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or
expenses based on infringement by the Products or otherwise of any intellectual property
right.
Buyer Remedy
Omron's sole obligation hereunder shall be, at Omron's election, to (i) replace (in the form
originally shipped with Buyer responsible for labor charges for removal or replacement
thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or
credit Buyer an amount equal to the purchase price of the non-complying Product;
provided that in no event shall Omron be responsible for warranty, repair, indemnity or
any other claims or expenses regarding the Products unless Omron's analysis confirms
that the Products were properly handled, stored, installed and maintained and not subject
to contamination, abuse, misuse or inappropriate modification. Return of any Products by
Buyer must be approved in writing by Omron before shipment. Omron Companies shall
not be liable for the suitability or unsuitability or the results from the use of Products in
combination with any electrical or electronic components, circuits, system assemblies or
any other materials or substances or environments. Any advice, recommendations or
information given orally or in writing, are not to be construed as an amendment or addition
to the above warranty.
See http://www.omron.com/global/ or contact your Omron representative for published
information.

6ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Limitation on Liability; Etc
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR
PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE
PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY,
NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the
Product on which liability is asserted.
Application Considerations
Suitability of Use
Omron Companies shall not be responsible for conformity with any standards, codes or
regulations which apply to the combination of the Product in the Buyer's application or
use of the Product. At Buyer's request, Omron will provide applicable third party
certification documents identifying ratings and limitations of use which apply to the
Product. This information by itself is not sufficient for a complete determination of the
suitability of the Product in combination with the end product, machine, system, or other
application or use. Buyer shall be solely responsible for determining appropriateness of
the particular Product with respect to Buyer's application, product or system. Buyer shall
take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO
LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS
BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S)
IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
Programmable Products
Omron Companies shall not be responsible for the user's programming of a
programmable Product, or any consequence thereof.

7
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Disclaimers
Performance Data
Data presented in Omron Company websites, catalogs and other materials is provided as
a guide for the user in determining suitability and does not constitute a warranty. It may
represent the result of Omron's test conditions, and the user must correlate it to actual
application requirements. Actual performance is subject to the Omron's Warranty and
Limitations of Liability.
Change in Specifications
Product specifications and accessories may be changed at any time based on
improvements and other reasons. It is our practice to change part numbers when
published ratings or features are changed, or when significant construction changes are
made. However, some specifications of the Product may be changed without any notice.
When in doubt, special part numbers may be assigned to fix or establish key
specifications for your application. Please consult with your Omron's representative at
any time to confirm actual specifications of purchased Product.
Errors and Omissions
Information presented by Omron Companies has been checked and is believed to be
accurate; however, no responsibility is assumed for clerical, typographical or proofreading
errors or omissions.

8ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
The following signal words are used in this manual.
The following alert symbols are used in this manual.
Meanings of Signal Words
Indicates a potentially hazardous situation which, if not
avoided, will result in minor or moderate injury, or may result in
serious injury or death. Additionally there may be significant
property damage.
Meanings of Alert Symbols
Indicates the possibility of laser radiation.
Indicates prohibition when there is a risk of minor injury from electrical
shock or other source if the product is disassembled.

9
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Sensor Head
ZX2-LD50L, LD50, LD100L, LD100: Class 2
Sensor Head
ZX2-LD50V: Class 1
Laser Safety
Never look into the laser beam.
Doing so continuously will result in visual impairment.
Do not disassemble the product.
Doing so may cause the laser beam to leak, resulting in the danger of
visual impairment.
Do not disassemble the product.
Doing so may cause the laser beam to leak, resulting in the danger of
visual impairment.

10 ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
In Europe, diffuse-reflective models in the ZX2 Series are categorized as Class 2 laser
products and the regular-reflective model is classified as a Class 1 laser product
according to EN60825-1 (see note).
The CE markings on the products also reflect these categorizations.
In the U.S.A., diffuse-reflective models in the ZX2 Series are categorized as Class II laser
products, and the regular-reflective model is classified as a Class I laser product
according to IEC60825-1 criteria, in accordance with the stipulations of the FDA standard
Laser Notice No. 50 (see note).
This product has already been registered with the CDRH (Center for Devices and
Radiological Health). (Accession Number: 1020665)
Place the laser warning label and the FDA label on the sensor.
The ZX2 Series is meant to be built into final system equipment. Pay special attention to
the following precautions for the safe use of the product:
Note: Europe: Class 1 and Class 2 of EN 60825-1: 1994 +A11:1996 +A2:2001
= IEC 60825-1:1993 +A1:1997 +A2:2001
U.S.A.: Class I and Class II of FDA (21 CFR1040.10)
(1) ZX2-LD emits visual laser beam. Do not stare directly into the laser.
Make sure that the laser beam path is terminated. If specular objects are present in
the laser beam path, make sure that they are prevented from reflecting the laser
beam.
When used without an enclosure, make sure the laser path from eye level is avoided.
(2) To avoid exposure to hazardous laser radiation, do not displace nor remove the
protective housing during operation, maintenance, and any other servicing.
(3) As for countries other than those of Europe and the U.S.A., observe the regulations
and standards specified by each country.
(4) Label Indications
The EN and FDA labels are supplied with the product.
Replace the current labels with them according to the instructions given in the
manuals.

11
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Please observe the following precautions for safe use of the products.
Installation Environment
• Do not use the product in environments where it can be exposed to inflammable/
explosive gas.
• Do not install the product close to high-voltage devices and power devices in order
to secure the safety of operation and maintenance.
Power Supply and Wiring
• The supply voltage must be within the rated range (DC12 to 24 V±10%).
• Reverse connection of power supply is not allowed. Connection to AC power supply
is also not allowed.
• Open-collector outputs should not be short-circuited.
• High-voltage lines and power lines must be wired separately from this product.
Wiring them together or placing in the same duct may cause induction, resulting in
malfunction or damage.
• Always turn off the power supply before connecting or disconnecting cables and
connectors.
Applicable standards
• EN61326-1
• Electromagnetic environment : Industrial electromagnetic environment
(EN/IEC 61326-1 Table 2)
• There may be cases that current output or voltage output fluctuate within 1%F.S
when a sensor is experienced electromagnetic interference under the condition of
the response time 30µs.
Others
• Do not attempt to dismantle, repair, or modify the product.
• Dispose of this product as industrial waste.
Precautions for Safe Use

12 ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Please observe the following precautions to prevent failure to operate, malfunctions, or
undesirable effects on product performance.
Installation of the Product
Installation Site
Do not install the product in locations subjected to the following conditions:
• Ambient temperature outside the rating
• Rapid temperature fluctuations (causing condensation)
• Relative humidity outside the range of 35 to 85%
• Presence of corrosive or flammable gases
• Presence of dust, salt, or iron particles
• Direct vibration or shock
• Reflective sensor of intense light (such as other laser beams or electric arc-welding
machines)
• Direct sunlight or near heaters
• Water, oil, or chemical fumes or spray
• Strong magnetic or electric field
Component Installation and Handling
Power Supply and Wiring
• To extend the output cables of amplifier units, shielded cables of the same specifi-
cations as the output cables must be used.
• When using a commercially available switching regulator, make sure that the FG
terminal is grounded.
• If surge currents are present in the power lines, connect surge absorbers that suit
the operating environment.
• When using two or more amplifier units or calculating units, make sure that the lin-
ear GND line of the amplifier units are connected to each other.
• Before turning ON the power after the product is connected, make sure that the
power supply voltage is correct, there are no incorrect connections (e.g. load short-
circuit) and the load current is appropriate. Incorrect wiring may result in breakdown
of the product.
• The cables must be 10 m or shorter in total length, for both sensor head and ampli-
fier units. To extend the cable from the sensor head, an optional extension cable
(ZX2-XCR) must be used. For extension of the cable of amplifier units, shielded
cables of the same type must be used.
• When using calculating units, make sure that the linear GND lines of the amplifier
units are connected to each other.
Please observe the following precautions to prevent failure to operate, malfunctions, or
undesirable effects on product performance.
Installation of the Product
Installation Site
Do not install the product in locations subjected to the following conditions:
• Ambient temperature outside the rating
• Rapid temperature fluctuations (causing condensation)
• Relative humidity outside the range of 35 to 85%
• Presence of corrosive or flammable gases
• Presence of dust, salt, or iron particles
• Direct vibration or shock
• Reflective sensor of intense light (such as other laser beams or electric arc-welding
machines)
• Direct sunlight or near heaters
• Water, oil, or chemical fumes or spray
• Strong magnetic or electric field
Component Installation and Handling
Power Supply and Wiring
• When using a commercially available switching regulator, make sure that the FG
terminal is grounded.
• If surge currents are present in the power lines, connect surge absorbers that suit
the operating environment.
• When connecting two or more amplifier units by using calculating units, make sure
that the linear GND lines of the amplifier units are connected to each other. Supply
power to all connected amplifier units at the same time.
• Before turning ON the power after the product is connected, make sure that the
power supply voltage is correct, there are no incorrect connections (e.g. load short-
circuit) and the load current is appropriate. Incorrect wiring may result in breakdown
of the product.
• The ferrite core accessory must be attached to the sensor head cable before use.
(For how to attach the ferrite core, see pages 24 and 28.)
• The cables must be 10 m or shorter in total length for amplifier units. For extension
of the cable of amplifier units, shielded cables of the same type must be used. To
extend the cable from the sensor head, an optional extension cable (ZX2-XCR)
must be used. Only one extension cable can be used.
• When using calculating units, make sure that the linear GND lines of the amplifier
units are connected to each other.
Precautions for Correct Use

13
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Warming Up
After turning ON the power supply, allow the product to stand for at least 10 minutes
before use. The circuits are still unstable just after the power supply is turned ON, so
measured values may fluctuate gradually.
A warmup of at least 10 minutes is also required after canceling LD-OFF input if LD-
OFF input is being used.
Sensing Object
The product cannot accurately measure the following types of objects: Transparent
objects, objects with an extremely low reflective sensor ratio, objects smaller than the
beam size, objects with a large curvature, excessively inclined objects, etc.
Mutual Interference
Inserting a calculating unit between amplifier units can prevent mutual interference
between two sensor heads.
Maintenance
• Always turn OFF the power supply before adjusting or connecting/disconnecting
the sensor head.
• Do not use thinner, benzene, acetone or kerosene to clean the sensor head and
amplifier units. If large dust particles adhere to the front filter of the sensor head,
use a blower brush (used to clean camera lenses) to blow them off. Do not blow the
dust away with your mouth. To remove smaller dust particles, use a soft cloth (for
lenses) with a small amount of alcohol. Take care not to wipe them off with exces-
sive force.
Scratches on the filter may cause errors.

14 ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
How to Use This Manual
Page Format
This section explains the page format by using the Setting for MAIN APPLICATIONS AND
SETTING METHODS chapter as an example.
Height
42 ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Height
Procedure for setting up height
1Sensor installation/wiring
Has the Sensor been installed and wired? (See page 23.)
Set the reference workpiece in place, adjust the position of the Sensor Head while
looking at the digital display values on the Amplifier Unit or the indicators on the
Sensor Head so that the height to be measured is near the measurement center
distance, and install the Sensor Head at this position.
2Set to the MENU mode
Button
Operation Display Description of Operation Explanation of Selection Menu
Hold down the button for
three seconds to switch to the
MENU mode.
Press the button to display
.
* This operation is not
required when hold and
trigger conditions are not to
be set.
Press the button to set the
display to to set display of
the detail menu.
Other than
OFF
Optional setting
Required setting
Set to the MENU mode
2
Response time setting
3
Sensor installation/wiring
1
Smart tuning
4
8
Return to RUN mode
Settin
g
completed
7
Threshold setting
5
Hold
6
Trigger conditions
Required
Required Select the desired mode to set
the measurement conditions in.
Hold down for
3 seconds
Lit
Press to display.
Press to display.
Header
Indicates the measurement
contents.
Flow
Shows the flow of operation.
Operation procedure
Explains the operation
procedure.
Button Operation
Shows how to use the buttons.
Display
Shows what is displayed as a result of the operation.
Description of Operation
Explains how to perform the operation by using buttons.
Explanation of Selection Menu
Provides a supplemental explanation of the selection menu.
Index label
Shows the chapter and header titles with white characters.

15
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Meanings of Symbols
Symbol Meaning
Indicates points that are important to achieve the full product
performance, such as operational precautions and applica-
tion procedures.
(For details about xxx,
see page xx.) Indicates pages where related information can be found.
(white characters on a black
background)
Indicates a required setting in a setup procedure.
(black characters on a white
background)
Indicates an optional setting in a setup procedure.
Indicates which button to press to display the menu shown in
the Display column.
Select the
desired value.
Indicates that the user can select the menu that accords with
their usage conditions by pressing the relevant button.
Set any value.
Indicates that the user can specify a value that accords with
their usage conditions by pressing the relevant button.
Important
Required
Optional
Press to display.
Menu name
Press to select
Menu name
Press to set.
[Change numeric value]
[Move digit]

16 ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
MEMO

1 PREPARATION FOR MEASUREMENT
PREPARATION FOR
MEASUREMENT
Part Names and Functions 18
Installation 23
Wiring Diagram 30

Part Names and Functions
18 ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Part Names and Functions
Basic Configuration
The basic configuration of the ZX2 series Smart Sensors is shown below.
See the following pages for details:
Part Names and Functions Specifications and Dimensions
Sensor Heads p. 22 p. 138
Amplifier Units p. 19 p. 136
Calculating Unit p. 22 p. 143
Extension Cables — p. 142
Amplifier Unit
Power Suppl
y
(sold separately)
Sensor Head
Calculating Unit
(used for connecting two or more Amplifier Units)
Extension Cable
(used for extending cable length)*
* Only one extension cable can be used.

Part Names and Functions 19
ZX2 User’s Manual
INTRODUCTION
BASIC
SETUP
PREPARATION
FOR
MEASUREMENT
TROUBLE-
SHOOTING
INDEX
CONTENTS
SETTING
TRANSITION
CHARTS
FLOW OF
OPERATION
MAIN
APPLICATIONS
& SETTING
METHODS
DETAILED
SETTINGS
SPECIFI-
CATIONS
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Amplifier Unit
Sensor Head connector
This connector is for connecting
the Sensor Head.
Display section (*)
Operating Section (*)
(*) Operating and Display Sections
Connector (two connectors, one on each side)
This connector is for connecting Calculating Units.
Laser ON indicator (green)
This indicator lights while the Sensor Head
is emitting a laser beam.
Output Cable
This cable is for connecting the power supply
and sync sensors or external devices.
Zero reset indicator (green)
This indicator lights when the zero reset function is enabled.
ENABLE indicator (green)
HIGH indicator (orange)
PASS indicator (green)
LOW indicator (orange)
Main display (red)
Sub-display (orange)
Cursor buttons
MENU/SET button
Smart tuning button
MENU indicator (green)
LOW threshold indicator (orange)
HIGH threshold indicator (orange)
This indicator lights while the Sensor is ready for measurement. It goes out
when measurement is not possible (e.g. when the received light amount is
excessive or insufficient, when the measurement range is exceeded, or
when the Sensor Head is not connected when the power is turned ON).
This indicator lights when the
judgement result is HIGH.
These buttons are used for
switching the display and setting
measurement conditions.
This is used for setting optimum sensing
conditions according to the operating conditions.
This button is used for switching
the mode and finalizing settings.
This indicator lights when the HIGH threshold is displayed
on the sub-display.
This indicator lights when the LOW threshold is displayed
on the sub-display.
This indicator lights in the MENU mode.
It goes out in the RUN mode.
This indicator lights when the
judgement result is PASS.
This indicator lights when the
judgement result is LOW.
This display shows measured
values and function names.
This display shows additional
information and function
settings for measurements.

Part Names and Functions
20 ZX2 User’s Manual
INTRODUCTION
MAIN
APPLICATIONS
& SETTING
METHODS
SPECIFI-
CATIONS
INDEX
SETTING
TRANSITION
CHARTS
DETAILED
SETTINGS
FLOW OF
OPERATION
CONTENTS
PREPARATION
FOR
MEASUREMENT
BASIC
SETUP
TROUBLE-
SHOOTING
Height
Double
Sheet
Detection
Positioning
Eccentricity
and Surface
Deflection
Steps
and
Warpage
Thickness
Digital Displays
The information displayed on the main and sub-displays depends on the currently
selected mode. The default mode is the RUN mode.
When the power is turned ON, the model of Amplifier Unit (ZX2-LDA) will be displayed on
the main display and the channel number will be displayed on the sub-display.
Subsequently, the Sensor Head software version will be displayed on the main display
and the Amplifier Unit software version will be displayed on the sub-display.
These details are displayed for approximately five seconds, and then data for the RUN
mode will be displayed.
(For details on setting transition charts, see page 158.)
Alphabet Display Format
The alphabet appears on the main and sub-displays as shown in the following table.
Mode Main display
(upper section, red)
Sub-display
(lower section, orange)
RUN The measured value (the value
after the measurement conditions
have been reflected) is displayed.
For example, when the hold
function is set, the held value will
be displayed.
Default measured values are as
follows:
By pressing the button, the HIGH
threshold, LOW threshold, analog output
value, resolution (max. value of measured
value during one second - min. value), current
value (value before execution of zero reset,
hold, scaling and 2-sensor operation), and
BANK are displayed in this order.
MENU The function names are
displayed in order by pressing
the buttons.
The setting for the function displayed on the
main display is displayed.
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
Measurement range
NEAR side FAR side
- indication
+ indication
0
Measurement center distance