Synchronization Of The Zero Marks (Sinamics Mode) - Siemens SINAMICS S120 Function Manual

Basic functions
8.25 Terminal Module 41
8.25.4

Synchronization of the zero marks (SINAMICS mode)

Overview
After the drive has been powered up, a static offset is obtained as a result of the random switch-
on instant of the incremental encoder emulation.
Function description
The function "Synchronization of the zero marks" corrects the static offset that is obtained as
a result of the random switch-on instant of the incremental encoder emulation. The positions of
the zero marks output at the TM41 are synchronized with the zero marks of the leading
encoder. The following conditions are defined for synchronization:
● The reference mark is located at the position at which both track signals A and B have the
"high" status.
● The zero position is the positive edge of the A track belonging to the reference mark, which
for a positive direction of rotation comes before the zero mark.
Figure 8-20 Example: Zero mark synchronization
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Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions