LON® goes safe - LonMark Deutschland

LON® goes safe - LonMark Deutschland
Safe Applications in
Industrial Automation
In industry safe methods and techniques play a very
important role. It is therefore evident that in the field
of machine controls a number of electronic safety systems have been developed, which were approved
and certified by the German Technical Inspection Service (Technischer Überwachungsverein or TÜV). In
contrast, SAFETYLON concentrates on process control
and process automation.
SAFETYLON enables and facilitates the safe collection,
processing and visualization of fault and alarm data
in power plants, refineries and other process industries. In case of error or malfunction the fundamental
requirements of IEC 61508 are satisfied since the
controls will lock the system in a safe state. In addition, SAFETYLON supports the concept of a safe scenario by which several subsystems will each be transferred into a safe state, either event driven or in a
predefined time sequence. The physical network may,
of course, be implemented by one or several media
such as TCP/IP, Twisted Pair and Power Line.
How can you implement
Further information:
training and enables technology transfer
for rapid and economical product
development by means of licensing
In a team consisting of a SAFETYLON
partner, TÜV and the developing company
each individual product development will be
supported up to product certification
Production plants can also be equipped with
SAFETYLON, whereby process and building automation can be merged and integrated. An example is a
fire protection application in a manufacturing plant.
Integrated Safety Technology - an outstanding feature
and TÜV
Product Test and
Sales and Marketing of the product
will be supported by the SAFETYLON
technology provider - LONMARK Germany
(use of logo, actions, etc.)
Sales and
Support by
LONMARK Deutschland e.V.
Theaterstraße 74
52062 Aachen
Tel. + 49 - 2 41 - 8 89 70-36
Fax + 49 - 2 41 - 8 89 70-42
[email protected]
LON® goes safe
From idea to solution.
Safe Applications in
Building Automation
IEC 61508 – The
Standard for Safety
Fire has always been a sudden and unpredictable
event feared by man. In case of fire the fire fighters
and rescue parties give their very best and are typically very well equipped to act fast and efficiently. But
also the technical systems in a building are a challenge in this case.
Hazardous breakdowns or malfunctions of industrial
process equipment or machines may lead to risks for
people, environment and material goods. By using a
risk analysis method in accordance with IEC 61508
measures can be taken by means of avoidance, recognition and control of failures.
In the event, that the risk reduction is performed by
programmable electronic systems, all embedded
components must comply with the requirements of the
international standard IEC 61508. This standard is
recognized as the “accepted state of the art” and
must be followed for reasons of liability by all manufacturers and service providers who produce, install
and maintain systems with safety related functions.
Depending on the risk assessment in a particular situation one out of four Safety Integrity Levels will be
applied: SIL1 (lowest risk) and SIL4 (very high risk).
The higher the risk, the higher are the requirements
for reducing the risk and the demands on the mechanical and electronic components and subsystems.
SAFETYLON can be used for SIL1 up to SIL3 systems
and, in special applications, up to SIL4, and hence
fully covers the requirements of IEC61508.
Work ?
From the very beginning it was an important requirement that SAFETYLON should function as a partial system or subsystem in a LON building network. This is
of advantage because SAFETYLON can operate via
the same wires and the same network infrastructure,
for example with conventional routers and IP routers,
without any additional costs. This way it is possible
that safe and non-safe subnetworks will not only coexist, but can fully cooperate with each other. Every
single device can process safe and non-safe functions, objects and data points simultaneously. This
feature can be achieved by implementing safe data
objects in a similar format as LONMARK® interoperable data objects (SNVTs). In contrast, however, any
transmission errors of safe data objects will be detected with (nearly) absolute certainty. Think of it as
“redundant” data transmission via separate safe
“transmission channels” including data integrity
checking of each individual message.
The EU Collective
Research Project
In order to combine safe – as defined by the international norm IEC 61508 – and non-safe applications
in Building Automation and in other technical systems
an EU funded research project designated SAFETYLON was submitted and awarded in 2005 within the
6th European Collective Research program (FP6).
The objective of the project is to specify and implement a technical solution based on the standard LON
networking technology, and market this solution with
the help of European LON User Organizations. The
project is carried out by 17 European partners who
are collaborating on the specification, design and
implementation of the SAFETYLON hardware and software. Further, the partners will build a series of devices for safe building automation applications.
Companies who are interested in participating in the
exploitation of the SAFETYLON-technology may license
its use through either LONMARK Deutschland e.V., the
Polish User Organization (PLUG) or LONMARK Sweden. The project is scheduled to be completed in November 2007.
The market today provides safe fire protection and
alarming systems in accordance with IEC 61508. But
these are, as a rule, totally separated from the other
building automation systems. This situation shall now
be changed with SAFETYLON: safe and non-safe subsystems are able to communicate via the same LON
network in an event oriented fashion such that a fire
arising from anywhere in the building will be detected
with a “probability reaching absolute certainty”. And
immediately all, really all subsystems can react to the
extraordinary event in the most flexible way: alarm
system, escape path illumination, elevators, smoke
exhaust ventilation, and even the locking and unlocking of doors. Integrated fire protection – a real innovation with SAFETYLON.
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