Siemens SINUMERIK 840D Function Manual page 889

FS: Automatic parameterization of the control parameters
The control parameters of the following spindle can be set as follows using this machine data:
MD30455 $MA_MISC_FUNCTION_MASK
Bit 5=0: Synchronous spindle coupling, following spindle:
Position control, feedforward control and parameter block are set for the following spindle.
Bit 5=1: Synchronous spindle coupling:
The control parameters of the following spindle are set as in an uncoupled scenario.
Further information
G2: Velocities, setpoint / actual value systems, closed-loop control (Page 31)
Automatic transfer of the LS parameters for synchronous operation
For the automatic dynamic response adaptation for FS and LS, for synchronous operation, the
parameter values for the position control, feedforward control and parameter records of the FS
can be transferred from the LS:
MD30455 $MA_MISC_FUNCTION_MASK, Bit 5
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 name. For example, 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, for example, 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 names:
MD30455 $MA_MISK_FUNCTION_MASK Bit 6=1
Knee-shaped acceleration characteristic
For the leading spindle, the effect of a knee-shaped acceleration characteristic on the following
spindle is identified by the following axis-specific machine data:
● MD35220 $MA_ACCEL_REDUCTION_SPEED_POINT (speed for reduced acceleration)
and
● MD35230 $MA_ACCEL_REDUCTION_FACTOR (reduced acceleration).
If MD35242 $MA_ACCEL_REDUCTION_TYPE is present, it is also used to configure the type
of acceleration reduction. Otherwise a hyperbolic drop in acceleration is assumed.
If the dynamic response of a following spindle is lower than that of the leading spindle when the
coupling factor is taken into account, the leading spindle dynamic response is reduced to the
required level while the coupling is active.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
S3: Synchronous spindle
19.4 Special features
889