Siemens sinumerik 840D sl Function Manual page 611

Detailed description
2.1 Speed/torque coupling, master-slave (SW 6 and higher)
2.1.11 Compatibility of SW 6.4 with earlier versions
Implicit preprocessor stop
The implicit preprocessor stop is omitted for MASLON, MASLOF.
For spindles in speed control mode, the time at which the coupling is closed or disconnected
changes. The coupling is closed or disconnected immediately, without waiting for standstill.
If activation/deactivation is to remain the same despite the new function, a WAITS must be
programmed explicitly before MASLOF as in the example on the right. The coupling is not
disconnected until all coupled spindles have come to a standstill.
Software version 6.4 and lower
MASLON(S3)
M2=3 S2=1000
G4 F4
M2=5
MASLOF(S3)
Multiple assignment
The time at which configuration alarm 26031 is output changes from the time at which the
control starts up to the time at which an attempt is made to close the coupling. The alarm is
acknowledged with a reset.
2.1.12 Constraints in SW 6.4 and higher
See Chapter "Constraints" In addition:
The coupling for axes and spindles in positioning mode is still closed and disconnected only
at standstill.
In the coupled state, the acceleration of spindles at the current limit may not provide an
adequate adjustment reserve for the torque compensatory controller in order to maintain the
desired distribution of torque between master and slave.
Prior to gear change or a star/delta switchover, the master/slave coupling must be
deactivated.
The maximum master spindle chuck speed in the following machine data is to be configured
less or equal to that of the slave spindles:
MD35100 $MA_SPIND_VELO_LIMIT
The axial speed monitoring function in the following machine data should be adapted to the
chuck speed:
MD36200 $MA_AX_VELO_LIMIT
For dynamic configuration, no distinction is made between the speed and torque master. The
response corresponds to that of the default setting:
MD37252 $MA_MS_ASSIGN_MASTER_TORQUE_CTR = 0.
24
SW 6.4 and higher
MASLON(S3)
M2=3 S2=1000
G4 F4
M2=5
WAITS(2); For compatibility reasons
MASLOF(S3)
Special functions: Speed/Torque Coupling, Master-Slave (TE3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0