Full Closed Loop Control - Leadshine EL8-EC Series User Manual

In overturn mode, output pulse width will be overturned as the position comparison point is
crossed.
Position
Position comparison
point 2
Negative crossing
Position comparison
point 1
Positive crossing
Position comparison
output
6.14 Black box
Black box is a function which allows users to set conditions or data to be captured whenever
error occurs. The data will be recorded by black box at the moment of error occurrence and
automatically saved. Thus, through Motion Studio, user can analyze cause of the problem with
the aid of black box data.
Black box is deactivated by default. It is user configurable to choose whether to overwrite
current data or when to overwrite the data in black box.

6.15 Full closed loop control

Full closed loop control utilizes external position sensor (i.e. grading ruler) to get an actual
position feedback to implement position control. This control can compensate for lead screw
tolerance and any changes due to temperature.
Parameters setting needs to make sure a smooth axis motion profile. No overtravel or
abnormal noise at stopping.
1. Set external encoder
External encoder type can be set accordingly in Pr0.31. At the moment, only ABZ
incremental encoder is supported.
User manual of EL8-EC***F AC Servo
Actual position
feedback Pr5.80
Signal overturned
Time
267