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In a Multi-Media Communications Centre

 

At a time when the new Europe is becoming a reality, Geneva intends to become an international hub of communication and a world centre for telecommunications. In the wake of this orientation, the Compagnie Internationale pour la Communication (Cl Corn), whose activities extend throughout Europe and North America, has built the Multi-Media Communications Centre at Vernier, in the canton of Geneva (Switzerland).

The MMCC already has an ultramodern printing plant used by Sonor SA, publisher of the "La Suisse" daily newspaper.

Sonor SA contracted Graphic Engineering AG to programme the construction of the plant. Telemecanique AG of Berne in partnership with Industrie General Bau AG and Redelco SA, was given the task of technical management of all the buildings comprising the printing plant: air conditioning, thermal and electrical refrigeration plant, and safety and security supervision.

 

The MMCC

 

With a floor area of almost 10 000 m2 and a volume of 58 000 m3, the printing plant is the first stage of the MMCC project. It includes a store room for reels of paper, a production shop for offset printing plates, a rotary press, a dispatch room and several technical services areas.

A rail link enables direct delivery of the reels of paper and offloading into an air-conditioned store room. The storage capacity corresponds to two months consumption, or approximately 1200 tons.

A network of conveyors feeds 7 unwinders and the offset printing machines, which comprise a Wifag rotary press, with 6 printing units driven by 180 kW motors and 2 folding machines. These machines, which are able to produce 2 newspapers of 64 and 32 pages simultaneously -with 4-colour printing on-one side and black plus a second colour on the other - at a maximum speed of 32 500 copies per hour are remotely controlled from an air-conditioned control room.

Thedispatch room has facilities for making inserts, for preparing each night the 7000 parcels of 4 to 50 newspapers, to address them and sort them according to the final destination.

The varioustechnical services rooms, house the standby generator sets and the complex power and fluid processing plants required for the operation and cooling of the rotary press together with the air conditioning of the building. These installations, designed and built by Gruenberg & Partner AG and Chaleur SA, include the dehumidified air production units for drying the output from the rotary press and the flow of iced water. Another feature is that the heating and general hot water for the building is partly supplied by heat recovered from certain parts of the. rotary press.

 

The Objectives

 

The printing plant operates 24 hours a day throughout the year. Continuity of production is therefore of paramount importance and must be ensured according to the "Just-in-time" principle. It was therefore necessary to:

optimise energy consumption round-the-clock,

ensure the safety and availability of the installations,

ensure exchange of data between complex equipment in a simple manner,

provide control, monitoring and measurement at all stages of the production process to enable follow-up at all times,

make available a reliable, effective maintenance tool.

 

The Solution

 

Based on a hierarchical automation architecture with distributed intelligence, the solution adopted by Telemecanique was designed according to the BIM 7 (Building Integrated Management) concept. It includes nine out-stations controlled by seven TSX 7 programmable controllers interconnected by a Mapway local area network, under the control of a Monitor 77 supervisor. Each out-station is a stand-alone technical island having control of the management of a number of tasks:

the air conditioning of the technical services rooms (printing plate workshop, inks and solvents, reel storage room, etc),

the ventilation of the rotary press and the air conditioning of the dispatch room (4 monobloc heating and humidifying units with variable speed pumps, lifting pumps),

the production of iced water for cooling the vital parts of the rotary press (3 out-stations for compressors, pumps, exchangers...),

the boiler room (boiler, circulators, and ventilation units) and the heat recovery unit for the compressors and refrigeration units,

the management of electrical power, its distribution, lighting circuits, load shedding, access control by badge readers, intrusion and fire detectors,

the handling of the reels from the store room, the compacted waste paper balls and the control of the standby generator sets. The programmable controllers control a number of starters, using mainly Integral 32 and 63 contactor breakers (motors, valves, flaps...), and also 8 Altivar ATV 45 variable speed controllers, via Uni-Telway data links. They also control 64 regulation loops for temperature, pressure and flow.

 

The Intelligent Building

 

The XBT-C or XBT-V operator terminals connected to the programmable controllers for local control, display values of measurements, references and action of the loops, adjust the parameters and enable selection of the mode of operation according to a pre-defined tree arrangement. But the trump card held by the maintenance and operating personnel is the Monitor 77 supervisor which enables very fine control and follow-up of all the equipment in the installation based on 70 graphic displays animated by more than 2000 objects. Real-time data, troubleshooting and rapid intervention ensure continuity of operation of the rotary press.

 

Text 5

 

Technical Services Management of a Computer Centre

To respond to the development of its data processing and computer needs, UAP, the leading French insurance company, has equipped its Lille centre with some of the most powerful computers in the world. Consequently, it was essential to provide these machines with a suitable environment, controlled by a sophisticated automation system.

Designed with the help of UAP General Services', the centralised technical management system installed by Telemecanique ensures the continuous operation of the centre and enables energy savings and a reduction in operating costs. The use of TSX series 7 programmable controllers enables the monitoring of almost 2 000 states :alarms, signals, unbalanced conditions, as well as the centralisation of 250 measurements.

The coordination and supervision are carried out from a central control panel fitted with a Monitor 77 industrial supervisor. In addition, the centre can be monitored remotely, either using standard telephone line terminals or from a standby location at La Defense in Paris.

 

The Installation

 

The computer centre is located in an large special purpose building, of which several thousand square metres are given over to computer rooms in the strict sense with the same floor space being used for technical services for the associated systems:

an incoming mains substation with several 1 300 kVA transformers

a standby power supply consisting of generator sets providing 4 000 kVA power

a group of 50 and 400 Hz inverters

a backup battery supply sufficiently autonomous to take over when the supply changes

a cold water station with four 350 kVA refrigeration compressor units

40 air conditioning units divided into two independent circuits in the computer rooms, providing a total air flow of 820 000 m3 per hour.

 

The Problem

 

The computer centre must be operational 24 hours a day, which implies:

continuous adaptation of energy consumption to the needs by load shedding and reconnecting

severe constraints of temperature and hygrometry control for the computer air conditioning

continuous monitoring of the installation : data acquisition from alarms, sensors, analogue measurement devices, as well as all of the information needed for the short term functioning and for preventive maintenance.

The Solution

 

This consists of adopting an automated production type of architecture, divided functionally into different levels :

at level 0 the sensors and actuators with the use, notably, of Integral 32 contactor breakers

at level 1, the local automatic control systems (distribution boards, standby generator sets, refrigeration units...) are controlled autonomously by more than 10 TSX series 7 PCs. The inter PC communication is provided by a Telway 7 network, which thus enables the coordination of the level 1 systems. Man-machine dialogue for this level is provided by XBT microterminals, an alpha-numerical keyboard with VDU, and two printers

at level 2, a supervisory system comprising a central programmable controller edits the data as it arrives and permits the acquisition of the operating reference values. This PC is linked with both the level 1 PCs and with the Monitor 77 supervisor.

Centralised supervision Remote surveillance

The control and supervision of the complete system is carried out by a Monitor 77, whose main functions are: animated synoptic display of the various parts of the installation, follow up of curves, storage of events. This covers more than 2 000 discrete states and 250 analogue measurements. The computer centre can be continuously remotely monitored from the UAP headquarters at La Defense in Paris via a special telephone link.

Outside normal working hours, surveillance can be carried out from a local surveillance point using the automatically switched telephone network.

Like this, it is possible for authorised personnel to undertake any rapid interventions which might be necessary via a standard telephone line terminal.

 

 

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