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Gefran has added a range of regenerative power supplies with Active Front End technology to its ADV200 line of vector inverters, targeted at system builders and original equipment manufacturers.

The AFE200 can return regenerative current back into the mains power network and provide improved Cos with a near-unity power factor for increased efficiency and cost savings.

The new power supplies also deliver ‘clean power’ thanks to reduced harmonic distortion values of less than five per cent.

According to the company, further advantages include enhanced system dynamics during drive and regeneration with increased load capacity, improved DC bus stability under load changes with potential extended equipment life, the elimination of uneconomical conventional braking systems and braking resistors and cost-effective single power-supply systems.

The AFE200 regenerative power supplies are available in five standard sizes from 22kW to 355kW for single, standalone setups and from 400kW to 1.2MW for multiple inverter drive ‘parallel’ configuration.

With its 380-500VAC supply (+/-15 per cent), the range is typically used with common DC bus versions of the ADV200 vector inverter and shares the same modular construction concept for fast and economical installation.

The AFE200 includes an RS485 serial line as standard and can be programmed with peer-to-peer or multi-drop connection using the Modbus RTU protocol.

The standard configuration also includes a fully configurable complement of analogue, digital and relay input/output (I/O).

Two option card slots are provided for ADV series fieldbus management cards for all the main networks as well as I/O expansion cards.

As with the ADV200 vector inverters, parameter setup is also possible using the integrated KB_ADV programming keypad or with Gefran’s GF-Express multi-language software for fast setup and application commissioning, including a simple integrated PLC for straightforward I/O control.

The AFE200 is available in two overload modes for ‘heavy duty’ and ‘light duty’ to match power, duty and price requirements to the application.

Further options include input choke, a pre-load kit with resistors and contactors and an external electromagnetic interference (EMI) mains filter – all sized to suit application specifics.

Gefran’s ADV200 line of field-oriented-control vector inverters now includes four panel-mount and six cabinet-housed drives for continuous-service, constant-torque power output applications from 0.75kW to 1.2MW at up to 690VAC.

With heavy-duty and light-duty overload management and with a choice of open-loop, closed-loop with speed feedback or V/F control, the advanced ADV200 range provides up to three front-mounted option card slots for a mixed combination of encoder and fieldbus management interfaces or I/O expansion cards.

The ADV200 is targeted at system builders and original equipment manufacturers requiring an inverter drive platform that is able to meet the needs of a range of speed control applications.

Based on a 32-bit microcontroller providing a closed-loop speed regulation up to 0.01 per cent and a speed range of 1:1,000, the ADV200 includes three levels of programming and control options as standard from a simple keypad, through Gefran’s GF-Express to the full IEC-61131-3 sequential PLC.

The complete ADV inverter, vector and regenerative power supply range is covered in a new 100-page catalogue, called ‘SIEIDrive ADV200, AFE200’, available as a downloadable PDF from the company’s website or directly from Gefran UK.

The catalogue also includes comprehensive sizing information and a complete listing of options and accessories.

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