S3: Synchronous spindle
13.4 Points to note
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
737
Resynchronize spindle 1/2 (DB31, ... DBX16.4 and 16.5)
LS: Resynchronizing the position measuring system during synchronous operation
Note
It is recommended to resynchronize the position measuring system of the LS only for
deselected synchronous operation.
Resynchronize (DB31, ... DBX31.4)
FS: Restoring the programmed angular offset
If synchronism between FS and LS is lost or not performed, the programmed angular offset
can be restored.
● Requirement: DB31, ... DBX31.4 = 1 (resynchronization)
● Acknowledgment: DB31, ... DBX99.4 == 1 (synchronization running)
Traverse keys for JOG (DB31, ... DBX4.6 and 4.7)
The "plus and minus traversing keys" for JOG are not disabled in the control for the FS in
synchronous operation, i.e. the FS executes a superimposed motion if one of these keys is
pressed.
Note
If superimposed traversing movements are to be precluded, they must be locked out by
measures in the PLC user program.
NC Stop axes plus spindles (DB21, ... DBX7.4)
"NC Stop axes plus spindles" in synchronous operation decelerates the coupled spindles in
accordance with the selected dynamic response. They continue to operate in synchronous
mode.
NC Start (DB21, ... DBX7.1)
(See Section "Response of the synchronous-spindle coupling for NC Start (Page 729)")
Note
NC Start after NC Stop does not deselect synchronous operation.
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