About This Documentation; Notes On Safety - Aventics AS3-SV Betriebsanleitung

AVENTICS | AS3-SV | R412026750–BAL–001–AD | English
English
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About this Documentation

This documentation contains important information on the safe and appropriate assembly and
commissioning of the product.
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Read this documentation completely, especially chapter "2 Notes on safety" before working
with the product.
Additional documents
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SISTEMA libraries, see www.aventics.com
Furthermore, observe general, statutory and other binding rules of the European and
national laws, as well as the valid regulations in your country to protect the environment and
avoid accidents.
Documentation validity
This documentation applies to the following safety valves from the AS3-SV series:
Designation
AS3-SOV-G012-3/2CC-POS-024-M12-SV-SO
AS3-SOV-G012-3/2CC-POS-024-M12-SV-NCNC
AS3-SOV-G012-3/2CC-POS-024-M12-SV-NCNO
AS3-SOV-G012-3/2CC-POS-024-M12-SV-PM
1) PP two positive switching safe outputs
2) NCNC two switches, both NC (e.g. door switch)
3) NCNO two switches, combination of NC and NO (e.g. door switch)
4) PM combination of a positive switching and negative switching safe output
These valves are referred to as AS3-SV safety valves in the following.
Required documentation
The AS3-SV safety valve is a component part of a larger system.
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Also observe the instructions for the other system components and manufacturer's system
documentation.
Presentation of information
Warnings
In this documentation, there are warnings before the steps whenever there is a risk of personal
injury or damage to equipment. The measures described to avoid these hazards must be
followed. Safety instructions are set out as follows:
Hazard type and source
Consequences of non-observance
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Measures to avoid these hazards
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Safety sign: draws attention to the risk
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Signal word: identifies the degree of hazard
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Hazard type and source: identifies the hazard type and source
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Consequences: describes what occurs when the safety instructions are not complied with
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Precautions: states how the hazard can be avoided
Meaning of the signal words
Hazard classes according to ANSI Z 535.6-2006
Indicates a dangerous situation which, if not avoided, will certainly result in death or serious
injury.
Indicates a dangerous situation which, if not avoided, could result in death or serious injury.
Indicates a dangerous situation which, if not avoided, could result in minor or moderate injury.
Indicates that damage may be inflicted on the product or the environment.
Symbols
The following symbol indicates information that is not relevant for safety but that helps in
comprehending the documentation.
Symbol Meaning
If this information is disregarded, the product cannot be used or operated
optimally.
Mat. no. Control
R412026223 PP
R412026224 NCNC
R412026225 NCNO
R412026226 PM
SIGNAL WORD
DANGER
WARNING
CAUTION
NOTICE
Abbreviations
This documentation uses the following abbreviations:
Abbreviation Meaning
CCF
DC
PL
PL
r
SF
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Notes on safety

About this chapter
The product has been manufactured according to the accepted rules of current technology. Even
so, there is risk of injury and damage to equipment if the following chapter and warnings in this
documentation are not followed.
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Read these instructions completely before working with the product.
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Keep this documentation in a location where it is accessible to all users at all times.
1)
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Always include the documentation when you pass the product on to third parties.
2)
Intended use
3)
The AS3-SV safety valve is a safety component in accordance with Machinery Directive 2006/42/
4)
EC and is therefore provided with the CE mark. Its intended use is to control ventilation and
exhaust in compressed air systems or similar applications, as well as to avoid unexpected
switch-on and release of energy in pneumatic tubing systems and end devices in the industry.
The valves from the AS3-SV series are designed for safe, redundant operation and have internal
monitoring. The valves from the AS3-SV series consist of redundant 3/2 valves and have the
overall function of an externally piloted valve with spring return (see also
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See section 13 "Technical Data" for the standards and test values complied with and adhered
to by the product.
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Use within the limits listed in the technical data.
The product is intended for professional use only.
Intended use includes having read and understood this documentation, especially the chapter 2
"Notes on safety".
Soft start
Valves from the AS3-SV series have a soft start function (soft start). The function of the soft start
module is that the output pressure increases slower than normal during pressurization, until it
reaches approx. 50 % of the inlet pressure. The valve then opens fully at this point and fills the
system with the full flow rate. This feature can be used to reduce the surge of a sudden, quick
pressure application of cylinders. This function is particularly useful when inline flow controllers
are placed in the cylinder control lines.
WARNING:
In contrast to the functions "safe exhaust" and "prevention of unexpected start-ups" of the valve
AS3-SV, the "soft start" function does not fulfil the safety function according to ISO 13849.
Safety function according to ISO 13849
The AS3-SV safety valve is a redundant system according to the requirements of ISO 13849-1
and -2, in which the pneumatic safety functions "safe exhaust" and "prevention of unexpected
start-ups" are ensured, including in case of a safety valve fault (e.g. due to wear).
The safety function of the 3/2 valve from the AS3-SV series is that the machine/system is only
supplied with pneumatic energy (compressed air) when the redundant electrical control and
therefore both valve elements are actuated simultaneously. The supply with compressed air is
switched off and the system is exhausted if the redundant electrical control is not available.
The AS3-SV safety valve is designed in such a way so that the safe state (filling switch-off and
exhausting the operating line) is always ensured, even in case of a fault within the valve (e.g. due
to wear, contamination or similar situations).
The control outputs of the electrical safety system must be designed and constructed in such a
way that they fulfil the requirements of the category and the performance level (PL) of the safety
system, which result from the machine's risk assessment.
With correct integration in the control system in accordance with ISO 13849-1 and -2, these
products can be used in up to category 3 and 4 and a performance level up to e can be achieved.
The product has been engineered and manufactured according to the fundamental and proven
safety principles of ISO 13849-2.
Common Cause Failure – CCF
The following measures must be ensured by the user to prevent failures due to common causes:
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Observe the temperature range (see chapter 13 "Technical Data")
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Observe the compressed air quality (see chapter 13 "Technical Data")
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Observe the permissible operating pressure (see chapter 13 "Technical Data")
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Observe the permissible voltage and current range for coils and sensor (see chapter 13
"Technical Data")
Proper use of this product also includes the user knowing and implementing all further
requirements from ISO 13849-1 and -2 (e.g. measures for the software, diagnosis, against
further CCF, against systematic failures etc.) and then evaluating whether the necessary
performance level has been achieved.
Diagnostic coverage (DC)
The safety valves used have a slider position inquiry. Monitoring the valve during pressurization
and exhausting offer high diagnostic coverage of the control (DC= 99 %).
Common Cause Failure
Diagnostic Coverage
Performance Level
Required Performance Level
Safety Function
).
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