Tuesday, April 07, 2009

Carlo Gavazzi Offers Variflex2 Series Of AC Drives

Carlo Gavazzi has launched a range of AC drives to deliver optimum speed control and improve efficiency in a range of industrial motor applications. The Variflex2 series comprises a basic and an advanced version, both offering a complete set of features as well as the options normally found on larger drives. The Variflex2 RVEF series is suitable for basic low-power motor-control applications, such as for pumps and fans that can be installed side by side, thus saving cabinet space.

The Variflex2 RVCF series is for more complex applications that require constant torque, including conveyors. According to the company, both versions offer simple installation with the option for DIN-rail or panel mounting and ease of use with comprehensive menus via software and push-button setup. The range of drives offers variable speeds from 0.20kW to 55.0kW, single-phase input of 110VAC/230VAC and up to three-phase 230VAC/480VAC.

The compact overall dimensions of the RVEF series fit in general-purpose motor-control applications from 0.20kW to 2.2 kW (0.25hp to 3.0hp). Available in two frame sizes, it is suitable for applications such as HVAC, chillers, water treatment and management, doors and barriers, pumping and oil stations. With six frame sizes, the RVCF is suitable for applications requiring a higher performance and power, ranging from 0.4kW to 55kW (0.5hp to 75hp), including conveyors for handling and sorting, construction, packaging and wrapping, bottling, lifts and elevators and plastic and rubber production.

Setup of the Variflex2 models can be further simplified with the use of Drivesoft: a PC software tool that enables the user to commission and store parameter settings that are also accessible via a keypad. RS232 or RS485 Modbus RTU/ASCII serial communications are available through an option card. To take advantage of the built-in PLC function, the user can also download a ladder diagram from a PC via the Windows-based downloadable software.

The Variflex2 series operates over the full -10C to +50C temperature range and is approved according to the related European and North American safety standards. It conforms to EMI radio standard and EMS immunity standard EN61800-3.

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