SINAMICS S120 Functi.. - Gregbotos.com

InfeedSmart Infeed1.2.2 Line and DC link identificationThe characteristic line supply and DC link quantities are determined using the automaticparameter identification routine. They provide the basis to optimally set thecontrollers in the Line Module.NoteIf the line supply environment changes, or the components connected to the DClink (e.g. after installing and mounting the equipment at the customer’s site or afterexpanding the drive group), then the line supply/DC link identification routineshould be repeated with p3410 = 5. Only then can it be guaranteed that the infeedoperates with an optimum controller setting.When the identification function is activated, alarm A06400 is output.CautionFor Smart Line Modules, Chassis type, the line supply and DC link identificationroutine is not permissible.Identification methodsFor additional identification methods, see the List Manual.p3410 = 4: An identification run for the total inductance and DC link capacitanceis initiated when the pulses are next enabled (two measuring routines withdifferent current magnitudes). Data determined during identification (r3411 andr3412) is entered into p3421 and p3422 and the controller is recalculated. At thesame time, the parameters for current controller adaptation are device (p6320,p6322). All of the parameters for the infeed module are then automaticallystored in a non-volatile memory.The infeed continues to operate without any interruption with the new controllerparameters.p3410 = 5: The same measurements and write operations are alwayscarried-out for p3410 = 4. However, before the first identification run, theparameter values for line inductance and DC link capacitance are reset (p3421= p0223 and p3422 = p0227) and the coarse settings are made for thecontroller.p3410 is automatically set to 0 after an identification run has been successfullycompleted.Note:The identification using p3410 = 5 is the preferred method.Closed-loop control may, for example, have to be reset to the factory setting ifthe identification process is unsuccessful.1-30© Siemens AG 2006 All Rights ReservedSINAMICS S120 Function Manual, 03/2006 Edition