Omron L User manual

Smart Sensors
Laser Type
Cat. No. Z197-E1-02A
ZX-L-N Series
USER’S MANUAL

ÇÕǹÇ?Ç ëÊ 1èÕ ëÊ 2èÕ ëÊ 3èÕ ëÊ 4èÕ
Introduction
Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7
Introduction
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
APPLICATION CONSIDERATIONS (Please Read)
FEATURES
PREPARATION FOR MEASUREMENT
BASIC OPERATION
MAIN APPLICATIONS AND SETTING METHODS
DETAILED SETTINGS
AUXILIARY FUNCTIONS
APPENDIX
User’s Manual
Smart Sensors
ZX-L-N Series

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ZX-L-N
User’s Manual
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Introduction
Thank you for purchasing the ZX-L-N Series Smart Sensor. This manual provides information
regarding functions, performance and operating methods that are required for using the
sensor.
When using the ZX-L-N Smart Sensor, make sure to observe the following:
•The ZX-L-N 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.

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READ AND UNDERSTAND THIS DOCUMENT
Please read and understand this document before using the products. Please consult your OMRON representative if
you have any questions or comments.
WARRANTY
OMRON’s exclusive warranty is that the products are free from defects in materials and workmanship for a period of
one year (or other period if specified) from date of sale by OMRON.
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-
INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY
BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED.
LIMITATIONS OF LIABILITY
OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF
PROFITS OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM
IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
In no event shall responsibility of OMRON for any act exceed the individual price of the product on which liability is
asserted.
IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS 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 OR REPAIR.
SUITABILITY FOR USE
THE PRODUCTS CONTAINED IN THIS DOCUMENT ARE NOT SAFETY RATED. THEY ARE NOT DESIGNED OR
RATED FOR ENSURING SAFETY OF PERSONS, AND SHOULD NOT BE RELIED UPON AS A SAFETY
COMPONENT OR PROTECTIVE DEVICE FOR SUCH PURPOSES. Please refer to separate catalogs for OMRON's
safety rated products.
OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the
combination of products in the customer’s application or use of the product.
At the customer’s request, OMRON will provide applicable third party certification documents identifying ratings and
limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of
the suitability of the products in combination with the end product, machine, system, or other application or use.
The following are some examples of applications for which particular attention must be given. This is not intended to
be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable
for the products:
Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not
described in this document.
Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment,
amusement machines, vehicles, safety equipment, and installations subject to separate industry or government
regulations.
Systems, machines, and equipment that could present a risk to life or property.
Please know and observe all prohibitions of use applicable to the products.
NEVER USE THE PRODUCTS 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 IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE
OVERALL EQUIPMENT OR SYSTEM.
PERFORMANCE DATA
Performance data given in this document 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 users must correlate it to actual
application requirements. Actual performance is subject to the OMRON 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 model 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 model numbers may be assigned to fix or establish key specifications for your application on

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your request. Please consult with your OMRON representative at any time to confirm actual specifications of
purchased products.
DIMENSIONS AND WEIGHTS
Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are
shown.
ERRORS AND OMISSIONS
The information in this document has been carefully checked and is believed to be accurate; however, no
responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user’s programming of a programmable product, or any consequence thereof.
COPYRIGHT AND COPY PERMISSION
This document shall not be copied for sales or promotions without permission.
This document is protected by copyright and is intended solely for use in conjunction with the product. Please notify us
before copying or reproducing this document in any manner, for any other purpose. If copying or transmitting this
document to another, please copy or transmit it in its entirety.

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Meanings of Signal Words
Introduction
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.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury or in 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.

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Laser Safety
ZX-L-N
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ZX-LD/ZX-LD30VReflective Sensor Type Sensor Head
ZX-LT Through-beam Type Sensor Head
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 look into the laser beam.
Doing so continuously may result in visual impairment.

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Laser Safety
Introduction
The ZX-LD, ZX-LDL, ZX-LDV, and ZX-LDVL Sensor Heads are Class
2 Laser Products according to EN 60825-1 (IEC 60825-1) and Class II Laser Products
according to FDA (21 CFR1040.10) (see note). The ZXLT Sensor Heads are Class
1 and Class II Laser Products, respectively. The ZX 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)
As for the Laser Product Classifications, refer to the Appendix,
p.155
(1) ZX-LD/ZX-LD30V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.

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Precautions for Safe Use
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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 24V±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.
Others
•ZX-E series (linear proximity type), and ZX-W series (microwave type) and ZX-T
series (high-precision contact type) must not be connected. Combined use of ZX-L
with these series is not allowed.
•Do not attempt to dismantle, repair, or modify the product.
•Dispose of this product as industrial waste.
Precautions for Safe Use

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Precautions for Correct Use
Introduction
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
specifications 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 ore more amplifier units, make sure that the linear 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 10m or shorter in total length, for both sensor head and amplifier
units. To extend the cable from the sensor head, an optional extension cable
(ZX-XCA) must be used. For extension of the cable of amplifier units, shielded
cables of the same type must be used.
•When using calculation units, make sure that the linear GND lines of the amplifier
units are connected to each other.
Precautions for Correct Use

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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.
Maintenance and Inspection
•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 excessive force.
Scratches on the filter may cause errors.
Sensing Object For Reflective Type Sensor Head
The product cannot accurately measure the following types of objects: Transparent
objects, objects with an extremely low reflective sensor ratio, objects smaller than the
spot diameter, objects with a large curvature, excessively inclined objects, etc.
Mutual Interference
Inserting a calculation unit between amplifier units can prevent mutual interference
between two sensor heads. However, this may not work efficiently if one sensor head is
saturated and a laser beam of the other sensor head is input. If you are interested in
installing a calculation unit in order to prevent mutual interference, carry out a test using
the actual system beforehand.

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Editor's Note
Introduction
Editor's Note
Page Format
TheresponsetimeoftheCH2AmplifierUnittowhichanexpressionissetwillbe
prolongedby1.0ms.Sincetheresponsetimeisinfluencedbythenumberofsamplesto
average,theactualresponsetimewillbe"responsetimebasedonthenumberof
samplestoaverage+1.0ms"
Section6
AUXILIARYFUNCTIONS
T FUNRUN
123
ZX-L
OperationManual
OperationManual
Section6
Section6
AUXILIARYFUNCTIONS
MeasuringwithMultiple
MeasuringwithMultiple
AmplifierUnits
AmplifierUnits
ThissectiondescribesthesettingswhenCalculatingUnitsareusedtoconnectmultiple
AmplifierUnits.
PerformingCalculations
PerformingCalculations
SettingtheNumberofSamplestoAveragep.66
AddingandSubtractingMeasurementResults
MovingtoFUNandCALC
1. SetthemodeswitchtoFUNontheCH2
AmplifierUnit.
UsetheLEFTandRIGHTKeystodisplay
[CALC]onthemaindisplay.
2.
3. PresstheUPorDOWNKey.
UsetheUPorDOWNKeytoselectthe
desiredexpression.
PresstheENTKeytoconfirmthesetting.
Thesub-displaywillflash.
4.
5.
Thesettingwillberegistered.
Measurementresultscanbecalculatedbetween2AmplifierUnits.Theexpressionis
setontheCH2AmplifierUnitandthecalculationresultsarealsooutputfromtheCH2
AmplifierUnit.CalculationscanalsobeperformedbetweenSensorswithdifferent
measuringranges.
zTitle of each section
zHeader
zOverview
zSub-header
zIndex label
zOverview and points of
the function described
zPurpose of operation
zDisplay
zKeys or switches to be used
zOperation procedure and supplementary explanation
Indicates the contents of the page.
Describes the overview and
operation flow of the section.
Shows the chapter number
and contents.
Shows the contents of the
operation to be performed.
Shows the display status resulting
from the operation.
Illustrates the keys and switches to be used.
Explains the operation procedure and the display
status resulting from execution of the operation.
Helpful information regarding operation and
reference pages is introduced here using symbols.
* This page does not exist.
zCross-header

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Notational Conventions
Menu
In this manual, menu items displayed on the screen are enclosed with [ ].
Operation procedure
Operation steps are numbered to indicate their order.
Visual Aids
Indicates points that are important to achieve the full product performance, such as operational
precautions and application procedures.
Indicates pages where related information can be found.
Indicates information helpful in operation.

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Introduction
Contents
Introduction ii
Precautions on Safety v
Laser Safety vi
Precautions for Safe Use viii
Precautions for Correct Use ix
Editor's Note xi
Contents xiii
Section 1 FEATURES 1
ZX-L Features 2
Section 2 PREPARATION FOR MEASUREMENT 9
Basic Configuration 10
Part Names and Functions 11
Installing the Amplifier Unit 16
Installing Sensor Heads 18
Connections 21
Wiring Input/Output Cables 27

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Section 3 BASIC OPERATION 31
Flow of Operation 32
Basic Knowledge for Operation 34
Function Transition Charts 39
Setting the Auto Scale 42
Setting the Standard Received Light Amount 45
Measuring the Received Light Amount (Intensity Mode) 46
Section 4 MAIN APPLICATIONS AND SETTING METHODS 49
Measuring Height 50
Measuring Thickness 54
Measuring Eccentricity and Vibration 58
Measuring Edges 61
Section 5 DETAILED SETTINGS 65
Setting Number of Samples to Average 66
Changing Display Scales 67
Setting the Measurement Sensitivity (Gain Switching) 74
Using Hold Functions 76
Comparing Measured Values (Differentiation Function) 83
Comparing Measured Values (Previous Value Comparisons) 86
Entering Threshold Values 88
Linear Output 95
Setting Judgement Output Timing (Timer) 104

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Introduction
Section 6 AUXILIARY FUNCTIONS 107
Measuring with Multiple Amplifier Units 108
Changing the Number of Display Digits 112
Reversing the Display 113
Adjusting Display Brightness (ECO Display) 115
Using the Zero Reset Function 116
Key Lock Function 122
Initializing Settings Data 123
Section 7 APPENDIX 125
Troubleshooting 126
Error Messages and Countermeasures 127
Q&A 129
Glossary 130
Specifications and Dimensions 132
Communication with the Smart Monitor is possible via the Interface Unit 144
Engineering Data 146
Quick Reference for Displays 152
Requirements from Regulations and Standards 155
Index 164
Revision History 168

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MEMO

Section 1 FEATURES
1
ZX-L-N
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Section 1
FEATURES
ZX-L Features 2

2
Section 1 ZX-L Features
ZX-L-N
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Section 1
FEATURES
ZX-L Features
The ZX-L Series provide the reflective type for displacement measurement and through-beam
type for smart length measurement. Measurement is performed using laser. By irradiating
laser beams to the object, the sensor can measure the distance between the object and
sensor head, perform positioning and width judgement.
Example: Measuring the height of a PCB mold
Example: Detecting cap floating
Measured value outputs
Measuring method
Sensing
object
Distance
Judgement outputs
(Reflective Type)
Measured value outputs
Judgement outputs
Sensing object
Laser received or blocked
amounts are measured at
two points to detect whether
the cap is floating or inclined
by checking changes in the
measured values.
Measuring method
(Through-
beam Type)

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Section 1 ZX-L Features
Section 1
FEATURES
The Compact Body Provides Sufficient Space.
The ZX-L series come in units as small as photoelectric sensors. This enables effective
use of limited installation space.
Many, Simple Functions
Measurement Ready at Power ON
The sensor can be used simply by installing and wiring it. Simply turn ON the power
and it is ready to operate.
The measurement results are displayed on the Amplifier Unit.
Simple Calculation Settings
Use a Calculating Unit to simply measure thickness and sum and difference
calculations between two measurements.
p.108
LDON
Calculating Unit
Thickness