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SINAMICS S120 Functi.. - Gregbotos.com

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Operating ModesVector V/f control (r0108.2 = 0)Description of Vdc_max control[V]Switch-on levelV DC linkV dc controller active 1 0|n|n actn setptttvdc_max_reg_uf.vsdFig. 3-50Switching Vdc_max control on/offThe switch-in level for Vdc_max control (r1282) is calculated as follows: Automatic detection of ON level deactivated (p1294 = 0)r1282 = 1.15 * p0210 (device supply voltage) Automatic detection of ON level activated (p1294 = 1)r1282 = Vdc_max – 50 V (Vdc_max: overvoltage threshold of the MotorModule)<strong>Functi</strong>on diagram for Vdc controller (see List Manual) 6320 Vdc_max controller and Vdc_min controller3-168© Siemens AG 2006 All Rights Reserved<strong>SINAMICS</strong> <strong>S120</strong> <strong>Functi</strong>on Manual, 03/2006 Edition

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