en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro
en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro
en/ACS800-04/U4 Hardware Manuals - VAE ProSys sro
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26OperationThis table describes the operation of the main circuit in short.Compon<strong>en</strong>tSix-pulse rectifierCapacitor bankIGBT inverterDescriptionConverts the three-phase AC voltage to DC voltage.Energy storage which stabilizes the intermediate circuit DC voltage.Converts the DC voltage to AC voltage and vice versa. The motoroperation is controlled by switching the IGBTs.Printed circuit boardsThe drive contains the following printed circuit boards as standard:• main circuit board (RINT)• motor control and I/O board (RMIO)• EMC filter board (RRFC) wh<strong>en</strong> EMC equipm<strong>en</strong>t is selected or varistor board(RVAR) otherwise.Motor controlThe motor control is based on the Direct Torque Control (DTC) method. Two phasecurr<strong>en</strong>ts and DC link voltage are measured and used for the control. The third phasecurr<strong>en</strong>t is measured for earth fault protection.<strong>ACS800</strong>-<strong>04</strong>/<strong>U4</strong>
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