Special Points Regarding Start-Up Of A Synchronous Spindle Coupling - Siemens SINUMERIK 840D sl Function Manual

S3: Synchronous spindle
14.4 Special features of synchronous mode
14.4.7

Special points regarding start-up of a synchronous spindle coupling

Spindle start-up
The leading and following spindles must be started up initially like a normal spindle. The
corresponding method is described in
References:
/IADC/ Commissioning Manual SINUMERIK 840D
/FB1/ Function Manual Basic Functions, Spindles (S1)
Requirements
The following parameters must then be set for the synchronous spindle pair:
● The machine numbers for the leading and following spindles
● required coupling mode (setpoint, actual value or speed coupling)
● select the gear stage(s) of FS and LS for synchronous operation
● The following coupling properties are still applicable for permanently configured
Command behavior of FS and LS for setpoint coupling
In order to obtain the best possible synchronism in setpoint couplings, the FS and LS must
have the same dynamic response as the response to setpoint changes. The axial control
loops (position, speed and current controllers) should each be set to the optimum value so
that variances can be eliminated as quickly and efficiently as possible.
The dynamic response adaptation function in the setpoint branch is provided to allow
differing dynamic responses of axes to be matched without loss of control quality. The
following control parameters must each be set optimally for the FS and LS:
916
(for permanently configured coupling with channel-specific machine data MD21300
$MC_COUPLE_AXIS_1[n])
(for permanently configured coupling with channel-specific machine data
MD21310 $MC_COUPLING_MODE_1[n])
synchronous 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
– Translation parameters for synchronized spindle coupling:
SD42300 $SC_COUPLE_RATIO_1[n]
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions