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Success Story: Water

AVU Aktiengesellschaft für Versorgungs-Unternehmen (Germany)

Modernisation of water treatment plant

I. CUSTOMER ENVIRONMENT / PROJECT CONTEXT

Customer profile:

AVU is a local utility serving 155.000 people and numerous companies in the West of Germany. with energy and water. Key drinking water figures: 8 Mio m3 / year, 2 water treatmant plants, 9 water storage facilities and more than 1.000 km pipes with 10 pumping stations.

Customer objective and constraints:

Modernisation of control system of water treatment plant Roland

Objectives:
- Carry out all work during without interruption of water supply
- Limit the maximum production interruption to 4 - 6 hours
- All work without influencing the water quality

Modernisation goals:
- Increase availibility through redundant control area
- Reduce the number of network interfaces
- Modification and extension of plc program without stoping the control system

- Exklusive use of standard fieldbus protocolls

- Improvements of remote control and implementation of remote maintenance option
- Simplification of field service

II. SOLUTION IMPLEMENTATION

Solution overview (services, products, systems, architectures...):

Modicon Quantum Hot-Standby System giving high availibility and allowing to test software modifications without interrupting the control system.
Profibus network to connect field devices
Wade Telemetry System with IEC 870-5 101 connection to Scada system
Ethernet TCP/IP network
Pump control via Altistart softstarters.

Simplified architecture:

III. RESULTS / ACHIEVEMENT

Customer benefits:

High availibility of the process control system.
Less but standardized protocols.

Schneider Electric differentiating values VS competitors:

High level of consultancy
Very competitive migration concept allowing smooth modernisation.

Solution breakdown

Main products & systems:

Process control PLC: Modicon Quantum
Quantum, Premium & Atrium high performance configuration software: Unity Pro
Alphanumeric and matrix terminals: Magelis
Soft starters for pumps and fans 4 kW to 1200 kW: Altistart 48
Solutions based on universal technologies Ethernet TCP/IP and Web: Transparent Ready
Remote terminal unit: w@de W320e