Bitzer launches dedicated frequency inverters

Bitzer-VaripackGERMANY: A range of frequency inverters, specially developed for refrigeration, has been debuted this week at Mostra Convegno by Bitzer.

This new generation of intelligent frequency inverters is said to be suitable for use with all Bitzer reciprocating compressors.

After intuitive commissioning, the frequency inverters take over the control functions of the refrigeration system. According to Bitzer, optimised adjustment to suit the system’s current cooling demand reduces energy consumption as well as running costs.

Of modular design, the Varipack series opens up a wide spectrum of applications, including supermarkets, hotels and restaurants as well as food production and processing centres. The series is suitable for refrigeration systems, air conditioning systems and heat pumps and can be integrated both in single compressors and in compound systems.

Varipack frequency inverters can be operated in two modes: the compressor capacity control either depends on an external set point signal or on the evaporation pressure with an optionally available add-on module for pressure control. In addition to direct control of the evaporation pressure, the condenser fan can also be regulated via a 0–10 V output signal and a second compressor can also be switched on.

The frequency inverters can either be integrated completely in a switchboard or mounted via push-through installation as desired. With the second option, Bitzer says the smaller switchboards offer sufficient space, because the cooling body protrudes out and therefore a majority of the generated heat is discharged directly outside.

By applying Varipack and configuring using Bitzer Software, users can select the optimal combination of compressor, motor and frequency inverter for every application. Communication for configuration, monitoring and reading out error messages takes place via Bitzer’s BEST software, the control unit or the integrated web server.

Bitzer


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