SINAMICS S120 Functi.. - Gregbotos.com

InfeedActive InfeedTerminal diagram for Active InfeedChassisNetworkMain switchesControl unitFusesFirmwareActive Interface ModuleActiveInfeedControlManipulatedvariablesActual valuesDRIVE-CLiQVoltage Sensing ModuleActive Line ModuleActualvaluesDRIVE-CLiQDC linkFig. 1-2Schematic structure of Active Infeed ChassisOperating modes of Active Infeed closed-loop control for Active Line Modules BooksizeThe Active Line Module can be operated in two different modes depending on theparameterized line supply voltage (p0210):Active ModeIn Active Mode, the DC link voltage is regulated to a variable setpoint (p3510),which results in a sinusoidal line current (cosϕ = 1).Smart ModeIn Smart Mode, the DC link voltage is not regulated but is, instead, derived fromthe rectified line supply voltage. The current waveform in the direction ofincoming supply is the same as that of a B6 diode converter. A square-linecurrent occurs in the direction of regenerative feedback.The DC link voltage setpoint (p3510) and the control type are preset as follows duringcommissioning in line with the connection voltage (p0210):Table 1-1Presetting the control type and DC link voltage booksizeSupply voltage p0210[V]380– 400 401– 415 416– 440 460 480Control type p3400.0 “0” = Active Mode “1” = Smart ModeVdc_setp p3510 [V] 600 625 562– 594 1) 621 1) 648 1)1) Voltages specified for Smart Mode are derived from the rectified line supply voltage. The DC link voltagesetpoint (p3510) has no effect in this control mode.© Siemens AG 2006 All Rights ReservedSINAMICS S120 Function Manual, 03/2006 Edition1-19