Bosch Rexroth OptiFeed-FS EcoDrive 03 FLP04VRS Functional Description page 156

8-10
Functions
Command Value Profile with Home Switch Actuated
If the home switch has already been activated when the command is
started, the drive generates command values in the opposite direction to
move away from the home switch. As soon as a 1-0 edge of the home
switch signal is detected, the drive reverses its direction and continues as
if the starting point were outside the home switch range.
Fig. 8-6: Command Value Profile with Start Position at the Home Switch
Monitoring the Distance Between Home Switch and
Reference Mark
If the distance between the home-switch signal edge and the reference
mark is too small, it is possible that sometimes the home-switch signal
edge will be detected only after the reference mark has already been
passed. As a result, the next reference mark after that is then evaluated.
The reference mark selection is no longer uniquely defined.
Fig. 8-7: Inaccurate Selection of Reference Marks when Distance Between
Home-switch Signal Edge and Reference Mark is too Small
The distance between the home-switch signal edge and the reference
mark is therefore monitored.
If the distance between the home-switch signal edge and the reference
mark is smaller than a certain value, the command error C602 Distance
home switch - reference mark erroneous will be generated.
The Critical Range for this distance is:
0.25 * distance between reference marks
ECODRIVE03-FL*-04VRS
Sv5047f1_AE.WMF
Sv5070f1_AE.WMF
DOK-ECODR3-FL*-04VRS**-FK01-EN-P