Siemens SINUMERIK Series Function Manual

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S3: Synchronous spindle13.4 Points to noteExtended Functions744 Function Manual, 03/2013, 6FC5397-1BP40-3BA1● The required coupling mode (setpoint, actual value or speed coupling)(for permanently configured coupling with channel-specific machine dataMD21310 $MC_COUPLING_MODE_1[n])● The gear stage(s) of FS and LS for synchronous operation● The following coupling properties are still applicable for permanently configuredsynchronous spindle coupling:– Block change response in synchronous spindle operation:MD21320 $MC_COUPLE_BLOCK_CHANGE_CTRL_1– Coupling cancellation response:MD21330 $MC_COUPLE_RESET_MODE_1– Write-protection for coupling parameters:MD21340 $MC_COUPLE_IS_WRITE_PROT_1– Transformation parameters for synchronous spindle coupling:SD42300 $SC_COUPLE_RATIO_1[n]Command behavior of FS and LS for setpoint couplingIn order to obtain the best possible synchronism in setpoint couplings, the FS and LS musthave the same dynamic response as the response to setpoint changes. The axial controlloops (position, speed and current controllers) should each be set to the optimum value sothat variances can be eliminated as quickly and efficiently as possible.The dynamic response adaptation function in the setpoint branch is provided to adaptdifferent axis dynamic responses without loss of control quality (see also Section "K3:Compensations (Page 223)"). The following control parameters must each be set optimallyfor the FS and LS:● KV factor (MD32200 $MA_POSCTRL_GAIN)● Feedforward control parametersMD32620 $MA_FFW_MODEMD32610 $MA_VELO_FFW_WEIGHTMD32650 $MA_AX_INERTIAMD32800 $MA_EQUIV_CURRCTRL_TIMEMD32810 $MA_EQUIV_SPEEDCTRL_TIMEBehavior during loss of synchronism:● Axis-specific MD32620 $MA_FFW_MODEWe recommend setting the feedforward control mode of the following axis to speedfeedforward control with Tt symmetrization MD32620 = 3.