Electronic Interlocking SIMIS W

Bus, car or train?
It’s not hard for a passenger to make up his mind when
he wants to get to his destination
● quickly,
● punctually,
● safely and
● cheaply.
As a railway operator, you need to gain the all-important edge on your competitors. Siemens Transportation Systems can help you do this – with SIMIS® W, the fail-safe microcomputer system from Siemens for the world market. The demands being placed on passenger transport by rail are very high today: ever increasing speed and higher traffic density as well as the maximum possible safety. In the rail freight sector, the increasing importance of logistics is creating a desire for greater flexibility in timetable-based train operations. All the more reason for you to lay the foundation now for successful railway operation in the future – with stateof-the-art, high-performance interlocking technology from Siemens Transportation Systems.
Because we know what you expect
from a modern interlocking:
● High reliability and availability
● Little maintenance requirement
● Technology adaptable to future
needs
● Trouble-free extension and
conversion
● Low operating costs
Our answer to your demands –
SIMISW
Profit from the advantages of our innovative system which has proven its worth all over the world. SIMIS W guarantees: ● Maximum safety (SIL 4)
● High availability
(2-out-of-3 configuration)
● High degree of economic
efficiency thanks to tailor-made
solutions for every situation
● Problem-free compliance with all
transport-authority regulations
regarding operations and safety
● Longer control distances with
distributed equipment
● Easy integration of existing
subsystems and elements of the
outdoor equipment
● The latest technology for all
subcomponents
● Almost maintenance-free
hardware
● Compact design
● Online and remote diagnosis
● Openness to innovations and
therefore a secure investment
for the future


Safety is a matter of trust
Siemens – Your systems partner Wherever the operation and whatever the operating conditions, railway operators all over the world value the combination of proven and innovative solutions and the know-how of our staff.
You, too, can profit from
● their expertise,
● their experience,
● their innovativeness and
● our multitude of experts working all over the world in the field of signalling, safety and control systems.
We have been putting our experience to work for your success for decades now –from our first beginnings in the field of signalling and safety systems to our subsequent innovative and consistent developments and, ultimately, to today’s pioneering systems. Among them are such modern, high-performance and economical interlocking systems as SIMIS W – one of the foundation stones for attractive and competitive railway operation.

Having the highest safety integrity level (SIL 4) in accordance with the CENELEC standards, SIMIS W complies with all safety requirements. This is made possible by a methodical and documented safety process. It accompanies the whole life cycle of a product – from the very beginning.
During development of the software, the hardware and the systems, all the process events comply with the relevant CENELEC regulations and standards. A phase model is used to illustrate the validated, verifiable and checkable stages of the safety process.

Keeping a check on things is a good idea
But the phase model is even better
The V-shaped phase model includes all the steps (development phases) in their unalterable, logical sequence. There are three main levels:
● System level
● Software or hardware component level
● Module level
At the end of each stage, the results are checked against the initial information (verification).

A specialist who is independent of the project compares the (sub-)products which have already been tested and integrated with the requirements specified on each level (validation).
This CENELEC-based quality assurance measure must also be adhered to by all our suppliers and subcontractors.

Outdoor equipment
Thanks to the modular hardware and software structure of SIMIS W, interlockings of the same type – from the smallest interlocking to the largest junction or line interlocking – can be implemented made-to-measure by simple configuration of the installation on the basis of the track topography. The only thing that varies is the number of computers for connecting the existing field elements.
If necessary, the computers can be
placed at a non-central location in
order to increase the distance between
the interlocking and field elements,
for example, or to minimise the cost
of laying signal cable.

Large-scale interlocking with decentralised element interface modules:
Extension of the IL bus by means of copper cables or fibre-optic cables The number of ACCs depends on the size of the interlocking.
Advantages of decentralisation:
• Less signal cable needed
• Greater distance possible between the interlocking and element interface modules

An especially positive feature of SIMIS W is its modular hardware basis (SIMIS ECC) with the low number of board types and the highly-integrated element interface modules.
As a result, the point and signal circuits of the outdoor equipment, for example, can be controlled and monitored directly by the integrated element interface modules.

Well-packaged
The SIMIS ECC
The SIMIS ECC is supplied in 19” two-tier frames. There are base frames and extension frames. The base frame contains:
● Three CPU boards
(ECC-CU: computer core)
● Two bus interface boards
(ECC-BUREP: computer core extension)
Depending on requirements, the other slots can be fitted with integrated element interface modules:
● INOM for connecting components
within the interlocking building
● UNOM for components of the
outdoor equipment
● SOM for signals
● POM for points
The extension frame accommodates additional integrated element interface modules.