MAIN CHARACTERISTICS OF FREQUENCY CONVERTERS USED IN THE PHV BOOSTER SETS
The PHV series booster sets use a Hydrovar® variable frequency drive, an automatic device that adjusts the speed of the electric pump in order to maintain constant pressure in the system.
Converters with power up to 30 HP can be mounted directly on to the motor. Models with over 30 HP power, are designed for wall mounting only. The pressure is measured by a pressure transmitter which uses a standard 4..20 mA current signal. The system pressure value can be read on the converter’s display. A simple user interface allows you to set the desired pressure value for optimal adjustment, as well as to view the operating data, such as the hours of operation and any alarms triggered. Included diagnostic menu to view temperature, current and voltage values facilitates diagnostics and failure analisys. Indicator lights signal power status, pump running and malfunctions.
Modular Hydrovar, Bare Unit
A password is required to access sensitive settings that allow you to program the Hydrovar in order to adapt it to any control requirements, such as flow resistance compensation, external control, periodic testing and so on. When more than one pump is used, the converters exchange information with each other through an RS485 serial line which can connect up to 8 Hydrovar devices plus one external unit for remote control. The
The converter is equipped with two |
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be used for remote signalling of pump running and malfunction |
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status, plus a programmable voltage analogue output for signalling |
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the frequency or pressure. Standard version with two sensor inputs |
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for implementing of two actual values signals within one system (min/ |
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max, difference) or for a second sensor for safety reasons. Specific |
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digital inputs are used for protection against water failure, motor |
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overtemperature, as well as for external enable signal and remote |
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control. The converter also incorporates a dry running protection |
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function via an adjustable minimum pressure threshold. |
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FCC Class A filter standard for Hydrovar |
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E.g. Industrial areas, technical areas of any building fed from a |
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dedicated transformer are examples of environment locations. | PHV Series Hydrovar with SSV Pump |
FCC Class B filter standard for Hydrovar
E.g. Houses, apartments, commercial premises or offices in a residential building are examples of environment locations.
Further information is available in the Hydrovar manual.
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