Lowara Hydrovar Variable Speed Drive – Pump/Motor Mounted

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Lowara Hydrovar Variable Speed Drive – Pump/Motor Mounted

Applications

HYDROVAR is an intelligent controller that matches pump performance to demand.

It controls the speed of a standard IEC motor by converting the fixed voltage and frequency from the power supply line.

It can be fitted easily to any new pump system or retrofitted to existing pumps using the fast and easy “clip and play” mounting clamps.

Pump systems are very often oversized for the application and therefore using much more energy than needed. With energy savings of up to 70% at partial loads alone, the typical investment payback period is less than 2 years, depending on energy costs and pump operating times.

A motor running at 80% of its maximum speed uses 48% less energy and slashes carbon emissions.

• Available from 1.5 to 22 kW in single or three phase, pump or wall mounted.
• Pump mounted version will fit on any standard IEC motor. Optismised cooling of the HYDROVAR depending on the power and the speed of the pump is guaranteed by the motor fan.
• Easy to commission, easy to setup and operate with the easy start up menu allowing you to walk through every step. New features include a larger screen display.
• No external control panel needed.
• No water hammer. The steady operation of the pump in partial loads also prevents water hammer, which normally arises in the start/stop operation of full speed pumps.
• Lower starting current. High current peaks are prevented by adjusting the start ramp times as you can in a soft starter.
• Multi-pump capability comes as standard which allows control from 1 to 8 pumps. Communicating with a central control system is also possible via an RS485 interface, and each HYDROVAR contains an individual microprocessor which operates independently if a failure occurs. Modbus and BACnet protocol fitted as standard.
• Lower noise from the pump because of lower speeds during operation. There is less noise in the pipeline and valves because of pump performance to the actual demand, and control along the system curve.
• Less wear and less mechanical stress because of lower speed of the pumps during operation and no additional load in the starting moment because of the soft start feature.

Energy savings in HVAC systems.

Energy is the largest cost of running any pump, with the biggest potential savings. HYDROVAR works with your system to make it efficient. This intelligent variable speed drive controls the pump exactly according to the current requirements of the user. Compared to an unregulated system, HYDROVAR saves up to 70% of the energy consumption (as tested by TÜV Austria, vogw0312-PIR-ZR). The smooth regulation at optimal operation increases not only the efficiency but also the life of the system’s components and reduces maintenance costs.

The controls available include constant pressure, system curve, constant flow or via an external signal. In addition to these functions HYDROVAR can do things that are normally only performed by the most advanced computerized control systems such as: stopping the pump or pumps at zero demand; stopping the pump or pumps in case of water failure; allowing protection against dry running; a standard feature of a 2nd required input value that allows change over between two different pressure settings via an external switch; sensor failure and over temperature of inverter and motor which protects the pump and motor from under or overvoltage.

Other features include: automatic test starts; auto cyclic change of lead and lag pump units; a memory for any inverter fault signals; an operating hours run counter; two levels of password protection if required.