High performance vector inverter is a powerful option for demanding loads
02 December 2010
Softstart UK has launched an advanced high performance vector inverter, combining power and precision to meet the needs of the most demanding loads. Available in powers from 5.5kW to 132kW initially with powers extending to over 400KW in 2011, the Hyundai N700V redefines the price/performance ratio, setting new standards for cost, energy efficiency, reliability, performance, functionality and ease of operation.
The N700V offers outstanding control performance with any load, thanks to improved torque characteristics across the frequency range and particularly at low speeds. In sensorless vector control, the N700V offers better than 200% torque at speeds as low as 0.5Hz, while improved torque response characteristics minimise speed deviation in the event of sudden load change. A strong torque restriction function is also provided – adjustable from 0-200% – to help protect the driven machine.
Tighter control of the torque characteristics also allows optimisation of energy savings, making the N700V an excellent option for users looking to bring down energy consumption and reduce their carbon footprint.
The N700V offers a number of advanced functions, including both online and offline auto-tuning. With online auto-tuning, quick set-up is combined with precise operation thanks to automatic compensation of changes in motor constants, such as when the motor temperature changes and even in the case of offline auto-tuning, speed control and torque characteristics are excellent.
Another useful feature of the N700V is the strategies it offers for dealing with an unexpected interruption in the power supply. An automatic restart is available with a variable speed search function, by using the frequency matching or speed search function, the inverter quickly matches the motor’s speed after a power failure.
Other features of the drive include output voltage regulation which ensures smooth operation even when the input voltage fluctuates, and an advanced trip avoidance function to control over-current and over-voltage by supplying a high quality power source to the motor.
The N700V has been designed for quick installation, ease of use, and simple maintenance. The low noise circuitry and optional EMC filter minimise electrical noise, while optional AC and DC reactors restrict harmonics from being migrated back into the power supply.
Communications options include RS485, RS232 and CAN, with Modbus interface allowing up to 32 inverters to be controlled on a single bus. For integration into wider plant control systems, there is the option of an integral Profibus board, offering simple connection to PLCs, DCS systems and SCADA platforms.
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