Contrinex SAFETINEX Manual de usuario
SAFETINEX
SAFETY LIGHT CURTAINS
HAND PROTECTION, TYPE 2
INSTRUCTION MANUAL
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Contrinex Industrial Electronics
ORIGINAL INSTRUCTIONS
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Contrinex Industrial Electronics
INTRODUCTION ...............................................................5
Contrinex ..............................................................................................5
Safetinex safety systems......................................................................5
Active optoelectronic protective devices (AOPD) ...............................5
Safeguarding function...................................................................6
Hazardous area.............................................................................6
AOPD detection capability............................................................6
Advantages of AOPDs .........................................................................7
Operating principle ..............................................................................7
Certification of Safetinex products.......................................................8
EUROPEAN SAFETY STANDARDS............................8
Types of safety standards applicable in the EU ..................................8
Examples of safety standards..............................................................9
An approach to European standards...................................................9
The user side......................................................................................10
Machine manufacturer side ...............................................................11
Notified bodies ...................................................................................11
NORTH AMERICAN SAFETY STANDARDS .........12
A different approach ..........................................................................12
OSHA Regulations and U.S. Consensus Standards..........................12
North American Standards for safety issues: UL, ANSI and CSA .....13
American standard agencies......................................................13
Canadian standard agencies .....................................................14
International standard agencies ........................................................14
RISK ASSESSMENT .......................................................15
Definition of hazards and risk reduction strategy ..............................15
Risk assessment process ..................................................................15
Methods for determination of risk level ..............................................18
Determination of risk level in North America...............................18
Determination of required performance level (PLr).....................18
Specific standards for safety distance calculation.....................20
INSTALLATION ...............................................................20
Installation rules .................................................................................20
Positioning the AOPD..................................................................20
Minimum safety distance required..............................................21
Minimum safety distance calculation (EU)..................................22
Minimum safety distance calculation (US & Canada) ................24
OTHER COUNTRIES .....................................................25
ACRONYMS .....................................................................26
TABLE OF CONTENTS
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Contrinex Industrial Electronics
TECHNICAL DOCUMENTATION.....................................27
Safetinex YBB for hand protection.....................................................27
Advantages of the Safetinex range....................................................27
Scope of this technical documentation..............................................28
Operating principle ............................................................................28
Self protected outputs........................................................................28
Resolution (R) of an AOPD.................................................................29
LED status indicators .........................................................................30
Configurable functions .......................................................................30
Test mode selection (YBB)..........................................................30
Installation ..........................................................................................31
Minimum safety distance ............................................................31
Positioning the sender and receiver units...................................32
Distance from reflective surfaces ...............................................33
Installation of multiple systems ...................................................34
Mechanical installation................................................................35
Connecting the protective device...............................................37
Power supply ........................................................................37
Electromagnetic compatibility (EMC) ...................................37
Light radiation.......................................................................37
Pin assignment .....................................................................38
Safetinex safety relay YRB-4EML-31S ...............................................39
Response time from prot. field intrusion to switching of safety relay 39
Connection examples for YRB-4EML-31S safety relay...............40
Alignment of sender and receiver unit...............................................41
Test before the first commissioning....................................................42
TESTING AND MAINTENANCE ...............................43
Daily functional test ............................................................................43
Hand protective devices (YBB models).....................................43
Troubleshooting..................................................................................44
Preventive periodic inspections.........................................................45
Cleaning .............................................................................................45
Daily testing log file ............................................................................45
AVAILABLE MODELS ...................................................47
Beam resolution: 30mm ....................................................................47
Technical data ...................................................................................48
DISCLAIMER ....................................................................48
EC DECLARATION OF CONFORMITY ...................50
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Contrinex Industrial Electronics
CONTRINEX
Contrinex, a multinational company with headquarters in Switzerland, is
specialized in the development, production and worldwide sales of po-
sition sensors, RFID and safety systems. Contrinex employs over 500
people, including 25 highly qualified R&D engineers, operates produc-
tion units in Switzerland, Hungary, China and Brazil, has its own sales
offices in all the major markets and is represented in over 60 countries.
Contrinex applies stringent management and production principles,
which are reflected in its ISO 14001:2004 and ISO 9001:2008 certifica-
tions. Additionally, Contrinex is subject to regular client-based audits.
Identical quality controls and equipment as well as staff recruitment and
training policies are implemented at the different production sites, thus
guaranteeing consistent product quality.
SAFETINEX SAFETY SYSTEMS
The Safetinex product lines produced by Contrinex offer high quality
safeguarding solutions for both personnel and machinery. Our special-
ists in sensor technology have developed high-performance electro-
sensitive protective equipment. Our range of safety products com-
prises highly sensitive devices for finger and hand protection as well
as access control, featuring various lengths and connection options.
Safetinex products have been developed in compliance with the ap-
plicable international safety standards and have obtained the required
product certification for use in the European Union, the United States
of America and all other countries where the applicable IEC standards
have been adopted.
ACTIVE OPTOELECTRONIC PROTECTIVE
DEVICES (AOPD)
When looking to build a safety system around a danger zone, the first
consideration is whether or not optical protection is suitable at all. For
this to be the case, it must be possible for the machine control to be
electrically influenced by means of the AOPD’s semiconductor output.
Moreover, it must also be possible to instantly terminate or exit the haz-
ardous process in every operating phase. Further, there must be no
danger of injury due to heat, radiation or from materials or components
ejected by the machine. If such danger exists, then either the optical
system is not suitable, or the danger must be otherwise excluded by
applying additional safety measures.
The selection of a specific type of safeguard involves an evaluation of
the hazard, in order to determine the applicable category or required
performance level PLr.
INTRODUCTION
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Contrinex Industrial Electronics
The choice of an active optoelectronic protective device (AOPD), such
as a safety light curtain, depends on:
–The relevant safety standards to be applied
–The definition of the safeguarding function
–The available space around the hazardous area
–The safety distance, as calculated by the appropriate formula and
depending on the AOPD’s resolution and position, as well as the re-
sponse times of the light curtain or access control barrier, the safety
relay and the machine stopping time
–Ergonomic factors (e.g. how often access is necessary)
–Commercial criteria
SAFEGUARDING FUNCTION
The AOPD resolution must be chosen according to the application and
the required safeguarding function. It is defined as the minimum size of
an object that can be reliably and safely detected at any position in the
protective field. Basically, two approaches can be considered:
–Point of operation: detection of hands entering the defined hazard-
ous area. The protective equipment immediately stops the machine
or renders it harmless. The Safetinex YBB range is best suited for
this type of application.
In both cases, the primary function of the protective device is to stop
the machine before the hazardous point is reached and to prevent un-
intentional machine start-up or restart. This function must comply with
the category or performance level of the safety-related components of
the machine’s control system.
HAZARDOUS AREA
The hazardous area can be defined in terms of:
–The dimensions of the zone that requires protection
–The different access points to accessible hazards
–The risk of an undetected presence in the hazardous zone, or risk of
bypassing the protective device
AOPD DETECTION CAPABILITY
The light curtain or barrier detection capability (or resolution) depends
on the distance between the centerlines of each beam emitted by the
sender. The choice for a specific resolution depends on the part of the
body which needs protection.
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ADVANTAGES OF AOPDS
Safeguarding devices are used where risks cannot be eliminated by
machine design. Rather than preventing access to a hazardous area,
safety light curtains or access control barriers detect the entry of a per-
son or part of a body and eliminate the hazard by triggering an im-
mediate stop of the hazardous machine motion. They present several
advantages over mechanical safeguarding devices:
–Access time to the machine is reduced, thereby increasing produc-
tivity
–Workplace ergonomics are greatly improved and less space is re-
quired
–The invisible infrared beams allow better visibility of the machine
and operating process
–Protection applies to any approaching person
OPERATING PRINCIPLE
A light curtain or access control barrier comprises two units, namely a
beam sender (or transmitter) and a receiver. The protective field is the
area enclosed by these two components, the emitted light beams form-
ing a permanent, though invisible, shield between the two units. The
FIG. 1: RESOLUTION OF THE LIGHT CURTAINS
Beam resolution 30 mm
FIG. 2: OPERATING PRINCIPLE
Emitter
Receiver
Protective field
Resolution (R)
Protective height
Operating distance (d)
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Contrinex Industrial Electronics
receiver unit is connected to a safety relay which transmits the signal to
the machine control unit. When properly installed, the protective device
detects any relevant entry into the hazardous area. As soon as such an
entry is detected, the protective device immediately triggers the safety
relay, which in turn causes the machine control system to bring the
machine to a safe status and/or complete stop, thus eliminating the
hazard.
The size of the protective field depends on the dimension of the AOPD
and the distance between the sender and receiver units.
AOPDs are also commonly used as sensors to automate industrial
operations where no critical human safety issue is involved. However,
when directly linked to the safety of persons, their design and installa-
tion are strictly regulated.
CERTIFICATION OF SAFETINEX PRODUCTS
Safetinex products satisfy all the requirements of category 2, PL c, ac-
cording to EN / ISO 13849 - 1:2006 (formerly EN 954-1) and Type 2
according to EN / IEC 61496 - 1 and - 2.
Before considering the use of Safetinex products in machine safety ap-
plications, it must be verified that the product certifications are valid in
the country where the product is to be used.
The following chapters provide a brief introduction to the main stand-
ards and regulations applicable in the European Community and in
North America. They are by no means a complete guide and only serve
as a reminder of the most important issues. For detailed information,
please refer to the original documents.
This section is intended to provide help for designers and users of in-
dustrial machinery. It summarizes the basic principles of European di-
rectives, procedures and regulations in terms of protection against haz-
ards in the work environment. It is by no means a complete guide and
only serves as a reminder of the most important issues. For detailed
information, please refer to the original documents.
TYPES OF SAFETY STANDARDS APPLICABLE IN
THE EU
In the European Union, safety is legislated. The EU’s Machinery Direc-
tive requires that all machines and safeguarding devices operating in
EU countries meet essential safety standards. Harmonized European
standards regarding machine safety policies are prepared by the CEN
(European Committee for Standardization) or CENELEC (European
Committee for Electrotechnical Standardization) and finalized by the
EU Commission. Once ratified, these standards become European
Standards (EN) that take precedence over national laws. Thus, EU
countries must remove or modify any national standard that conflicts
with the European Standard. CENELEC and CEN cooperate closely
with ISO and IEC, the main bodies for international standards.
EUROPEAN
SAFETY STANDARDS
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Applicable standards usually have the prefix EN (“European Norm”),
but most also have international – ISO/IEC – equivalents. There are
different types of standards:
–A-type standards are basic safety standards applicable to all ma-
chinery, e.g. EN/ISO 14121
–B1-type standards set out special safety aspects and procedures,
e.g. EN/ISO 13849-1
–B2-type standards set rules on safety equipment design, e.g. EN/
IEC 61496-1, EN/TS/IEC 61496-2/-3
–C-type standards set safety requirements for a specific machine or
type of machine
EXAMPLES OF SAFETY STANDARDS
In addition to the Machinery Directive 2006/42/EC and the Work Equip-
ment Directive 89/655/EEC, there are standards that specifically focus
on protective equipment, such as:
TYPE SCOPE CE
STANDARDS
INTERNATIONAL
STANDARDS
A Safety of machinery
Basic principles
EN 12100-1
EN 12100-2
ISO 12100-1
ISO 12100-2
Risk assessment EN 14121-1
EN 14121-2
ISO 14121-1
ISO 14121-2
B Interlocking devices EN 1088 ISO 14119
Guards EN 953
Safety related parts of
control systems
EN 13849-1
EN 13849-2
ISO 13849-1
ISO 13849-2
Safety of machines:
Electro-sensitive
protective equipment
EN 61496-1
CLC/TS 61496-2
CLC/TS 61496-3
CEI 61496-1
CEI 61496-2
CEI 61496-3
Safety distance details EN 13855 ISO 13855
Positioning of protective
equipment EN 13855 ISO 13855
TABLE 1: EXAMPLES OF SOME APPLICABLE SAFETY STANDARDS
For additional information regarding European standards, please refer
to, www.cenorm.be, www.cenelec.be, www.din.de, www.iec.ch, www.
iso.ch.
AN APPROACH TO EUROPEAN STANDARDS
The European Union has chosen to regulate the production, installation
and use of old, modified and new machines within the European Union
territory by approaching the parties concerned separately, i.e. one legal
framework has been created for users and another for manufacturers.
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The Work Equipment Directive sets out the rules applying to users of
machines on production sites, while the Machinery Directive sets out
those applying to machine constructors and safety equipment manu-
facturers. However, most subordinate standards apply to both parties,
as shown in the following chart.
THE USER SIDE
The user side is regulated by the Work Equipment Directive, which
states that users of a machine are obliged to make sure that it complies
with the legal requirements. Hence, if the user buys a machine which
does not comply with the EU Machinery Directive, it is his responsibility
to take the necessary actions to bring the machine up to the required
quality and safety level.
Additionally, the Work Equipment Directive specifies what minimum
regulations must be observed for safety purposes when work equip-
ment is being used. The original text can be found on the relevant Eu-
ropean Union website.
TABLE 2 : EUROPEAN MACHINE SAFETY OVERVIEW – USER AND MANUFACTURER SIDE.
USER SIDE MANUFACTURER SIDE
Tabla de contenidos
