Siemens SINUMERIK 840D sl Function Manual page 943

Control parameter sets
A separate parameter set with servo loop setting is assigned to each gear stage on spindles.
These parameter sets can be used, for example, to adapt the dynamic response of the
leading spindle to the following spindle in synchronous operation.
When the coupling is deactivated (speed or positioning mode), it is therefore possible to
select other position controller parameters for the FS and LS. To utilize this option, a
separate gear stage must be used for synchronous operation and selected before
synchronous mode is activated.
The coupling parameters of the following spindle can be set as follows using this machine
data:
MD30455 $MA_MISC_FUNCTION_MASK
Bit 5=0: Synchronized spindle coupling, following spindle:
Position control, feedforward control and parameter block are set for the following spindle.
Bit5=1: Synchronous spindle coupling:
The control parameters of the following spindle are set as in an uncoupled scenario.
The following control parameters must be set identically for the FS and LS:
● Fine interpolator type (MD33000 $MA_FIPO_TYPE)
● Axial jerk limitation
References:
/FB1/ Function Manual, Basic Functions, Velocities, Setpoint-Actual Value Systems, Closed-
Loop Control (G2)
Separate dynamic response for spindle and axis operations
In spindle and axis operations, dynamic programming FA, OVRA, ACC and VELOLIMA can
be set separately from one another with the following MD:
MD30455 $MA_MISK_FUNCTION_MASK Bit 6=0
Assignment is undertaken by the programmed axis or spindle identifier; e.g. in spindle
operation, VELOLIMA[S1]=50 therefore only reduces the maximum speed to 50% and in
axis operation, VELOLIMA[C]=50 only reduces the maximum speed to 50%.
If e.g. B. VELOLIMA[S1]=50 and VELOLIMA[C]=50 are to have the same effect as before
with this machine data, the programming of FA, OVRA, ACC and VELOLIM have an effect
regardless of the programmed identifiers:
MD30455 $MA_MISK_FUNCTION_MASK Bit 6=1
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
MD32400 $MA_AX_JERK_ENABLE
MD32410 $MA_AX_JERK_TIME
MD32420 $MA_JOG_AND_POS_JERK_ENABLE
MD32430 $MA_JOG_AND_POS_MAX_JERK
Synchronous Spindles (S3)
Special features of synchronous mode
943