Response On Activation/Deactivation - Siemens SINUMERIK 840D sl Function Manual

12.7

Response on activation/deactivation

Activating/deactivating during axis standstill
A request to close/open the coupling only becomes effective when the master and slave axis
are at a standstill (zero speed):
DB31,... DBX.61.4 == 1 (axis/spindle stationary)
In this case, the coupled axes must be in the closed-loop controlled mode.
Figure 12-6
When closing the coupling using the program command MASLON, the system waits until the
coupling is closed before the block is changed. The "master-slave switchover active"
message is displayed at the SINUMERIK Operate for the operator for this time.
Activation/deactivation during motion
While moving, the coupling can only be closed and/or opened for spindles in the open-loop
speed controlled mode.
Activation during motion
The coupling procedure at different speeds is divided into two phases.
Phase 1
A request is made to close the coupling with:
DB31, ... DBX24.7 = 1 (master/slave ON)
The slave spindle accelerates or brakes along a ramp to the setpoint speed of the master
spindle.
When the setpoint speed is reached, the coupling is closed and the NC/PLC interface signal
is set:
DB31, ... DBX96.7 = 1 (coupling active)
If the master spindle is accelerated while the coupling is being closed, then Phase 1 is
extended corresponding to the dynamic difference between the master and the slave spindle.
Special Functions
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Activation procedure
TE3: Speed/torque coupling, master-slave
12.7 Response on activation/deactivation
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