Position Tracking - Siemens SINAMICS V90 Operating Instructions Manual

7.2.12

Position tracking

Position tracking enables the load position to be reproduced when using gearboxes. It can
also be used to extend the position area.
Features
● Configuration via p29243
● Virtual multiturn via p29244
● Mechanical gear ratio via p29248 and p29249
Example of position area extension
The following diagram illustrates an absolute encoder that can represent eight encoder
revolutions.
Position tracking (p29244 = 24), setting p29248 = p29249 =1 (gear ratio = 1):
In this example, this means:
● Without position tracking, the position for +/- 4 encoder revolutions around r2521 = 0 LU
can be reproduced.
● With position tracking, the position for +/- 12 encoder revolutions (+/- 12 load revolutions
with load gear) can be reproduced (p29244 = 24).
Measuring gear configuration (p29243)
The following points can be set by configuring this parameter:
Note
Be sure to perform the "ABS" function again after you set p29243 to 1.
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2017, A5E37208830-003
Parameter
p29243
0: deactivate position tracking
•
1: activate position tracking
•
7.2 Basic positioner (EPOS)
Description
Control functions
171