Wilo pumps meet BACnet

Wilo, pumps, BACnet
The intelligent integration of Wilo pumps into the BACnet-based system at the Munster All Weather Zoo in Germany helped reduce investment costs considerably and contributes to an effective and efficient services installation.

To enable them to connect into building automation system, Wilo offers BACnet capability for its Stratos range of high-efficiency pumps. These pumps are claimed to achieve up to 80% lower electricity consumption than uncontrolled standard pumps.

Their connection to BACnet is facilitated by IF-Modules, so neither separate hardware devices such as gateways nor a 0 to 10 V interface is required.

Via MS/TP medium RS485, difference field devices can be cross linked by means of BACnet, enabling pumps and other devices such as flap drives, frequency converters and room user interfaces to be connected.

Routers can be used for transition to other media such as BACnet/IP or BACnet Ethernet according to ISO 8802-3. Only network parameters therefore need to be set, while data points remain unmodified and can be forwarded like that. The transparency of the protocol considerably simplifies the engineering of a building-automation solution; changes or extensions do not affect the functions of building automation achieved with BACnet.

As a general rule, Wilo high-efficiency pumps can transmit electrical, mechanical, thermal and hydraulic pump data to building automation via data protocols. Examples include pressure, flow quantity and power consumption, current, operating hours and fault and error states. Control commands can be forwarded to the pumps.

Pumps can be operated according to speed, volume flow or pressure, so that a differentiated impression of the current operating situation is given at the same time.

Intelligent integration of the pumps at the aquarium in the Munster All Weather Zoo in Germany using BACnet reduced investment costs considerably. Because of the connection via the IF-Module BACnet, switching outputs to control the pump and the operating and fault signals were not required., so less wiring was needed. Further savings resulted from the temperature sensors being integrated into the pumps, reducing the cost of field devices and their associated wiring. There was also no need to weld the immersion wells to take temperature sensors.

These special pumps contribute to ensuring optimum living conditions in the aquariums, ensuring that conditions in the tanks are exactly right — particularly for species of fish sensitive to cold conditions. This future-proof solution also meets the zoo’s high demands for efficiency and comfort.

For more information on this story, click here: April 2011, 80
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