|Factory Environmental Control|
|The Ultrakust Electronic Company, is located in Bavaria in Germany, and has more than 200 employees.
Ultrakust has recently build a new 8,000 m2 factory building. The entire automatic control of the building automation is realised by means of P-NET modules. The system consists of about 2500 data points, for the control of lights, sunshades, heating valves, air condition and hot water.
Personnel entry control is performed by means of window observation, motion detection in rooms and electronic door locks.
The design and installation of the entire automation system has been performed by Ultrakust.
Local panels are found in every room. More than 250 slave units are connected to the network.
The heating system is also controlled via P-NET, and compensates in accordance with meteorological conditions.
The system is implemented using 7 local P-NETs, formed as 7 independent cells in "outer" rings. These "outer" rings are connected to another P-NET ring, an "inner" ring, which is used for communication between the cells.
One ring deals with the mechanical production area.
|Another ring deals with the electronic production area. A graphic control system based on P-NET is connected to the "inner" ring.
Each ring is an independent cell, and slave modules are connected to their local cell.
The ventilation systems are found in the basement, and the control of these systems are allied to the heating systems.
The system is also connected directly to a PC and a Novell-Network. A database is connected to the PC network and information is down loaded to the controlling units, e.g. air exchange and temperature settings. This information can be retrieved from anywhere on the network.
The P-NET interface modules for controlling the ventilation systems are installed in a number of panels.
Slave modules produced by different vendors operate on the same network.
Energy production and distribution is controlled and optimised using the P-NET control system.
To optimise energy costs, the current load is monitored and the maximum power is controlled.
The P-NET control system has saved on installation costs, reduced operating expenses and made it possible to include all the technical installations in one network.
|Scope of P-NET installation:
2500 Digital Input/Output
108 Analog Input (Pt100, 4-20mA)
6 Controllers with 68000 CPU.
2 Magnetic inductive flowmeters.
15 Converter RS232 - P-NET
1 Colour graphic system
2000 meters of P-NET cable.
International P-NET User OrganizationP.O. Box 192
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