Flying Referencing - Siemens SINAMICS S120 Function Manual

Function modules
9.8 Basic positioner
connector input p2598 is connected with adjustable parameter p2599). The axis is then
referenced and the status signal r2684.11 (reference point set) set.
Note
The velocity override is inoperative during this process.
If the braking distance is longer than the reference point offset or a direction reversal is required
as a result of the selected reference point offset, then after detecting the reference zero mark,
the drive initially brakes to standstill and then travels back.
9.8.4.2

Flying referencing

Function description
Inaccuracies in the actual value acquisition are compensated with flying referencing. This
increases the load-side positioning accuracy.
The mode "flying referencing" (also known as post-referencing, positioning monitoring), which
is selected using a "1" signal at binector input p2597 (select referencing type), can be used in
every mode (jog, traversing block and direct setpoint specification for positioning/setting-up)
and is superimposed on the currently active mode. Flying referencing can be selected both with
incremental and absolute measuring systems.
With "flying referencing" during incremental positioning (relative), you can select whether the
offset value is to be taken into account for the travel path or not (p2603).
"Flying referencing" is activated by a 0/1 edge at binector input p2595 (start referencing). The
signal in binector input p2595 (start referencing) must be set during the entire referencing
process otherwise the process is aborted.
Status bit r2684.1 (passive/flying referencing active) is linked with binector input p2509
(activate measurement probe evaluation). It activates measurement probe evaluation. Binector
inputs p2510 (measurement probe selection) and p2511 (measurement probe edge
evaluation) can be used to set which measurement probe (1 or 2) and which measurement
edge (0/1 or 1/0) is to be used.
The probe pulse is used to supply connector input p2660 (referencing measured value) with the
measured value via parameter r2523. The validity of the measurement is reported to binector
input p2661 (measurement valid feedback) via r2526.2.
Note
The following must always apply to the "Flying referencing mode" windows:
p2602 (outer window) > p2601 (inner window).
You can obtain more information on the "Flying referencing" function in the SINAMICS S120/
S150 List Manual in function diagram 3614.
482
Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions