Siemens SINUMERIK Series Function Manual

Also see for SINUMERIK 828D Turning: Diagnostic manual Function manual Equipment manual Programming manual Operating manual

S3: Synchronous spindle13.1 Brief descriptionExtended FunctionsFunction Manual, 03/2013, 6FC5397-1BP40-3BA1 711Setpoint correctionThe setpoint correction of the system variable $AA_COUP_CORR[Sn] impacts on allsubsequent following spindle programming in the same way as a position offset andcorresponds to a DRF offset in the MCS.Example: establish correction valueIf a coupling offset of 7° has been programmed using COUPON(....,77) and if a mechanicaloffset of 81° has come about as a result of closing the workpiece support fixture, a correctionvalue of 4° is calculated:The system variables return the following values for the following spindle:$P_COUP_OFFS[S2] ; programmed position offset = 77°$AA_COUP_OFFS[S2] ; setpoint position offset = 77°$VA_COUP_OFFS[S2] ; actual value position offset approx. 77°$AA_COUP_CORR[S2] ; correction value = 4°13.1.3 Prerequisites for synchronous modeConditions on selection of synchronous modeThe following conditions must be fulfilled before the synchronous spindle coupling isactivated or else alarm messages will be generated.● The synchronous spindle coupling must have been defined beforehand (eitherpermanently configured via machine data or according to user definition via part programusing COUPDEF).● The spindles to be coupled must be defined in the NC channel in which the coupling isactivated.Channel-spec. MD20070 $MC_AXCONF_MACHAX_USEDaxis spec. MD35000 $MA_SPIND_ASSIGN_TO_MACHAX● The following spindle must be assigned to the NC channel in which the coupling isactivated.Default setting with axis-specific MD30550 AXCONF_ASSIGN_MASTER_CHAN● The following applies to setpoint and actual value couplings (DV, AV):FS and LS must at least have a position measuring system for recording positions andposition controls must be started up.NoteWhen position control is activated, the maximum setpoint speed of the LS is automaticallylimited to 90% (control reserve) of the maximum speed. The limitation is signaled via IS"Setpoint speed limited" (DB31, ... DBX83.1).