Lenze EVS93xx CrossCutter - Manual (Page 59)

Cross Cutter
Features of the "Cross Cutter" prepared solution
 Prepared Solution Servo PLC / ECSxA 1.1 EN 2-45
2.5.5 Following error monitoring
When the servo controller is enabled, the drive system will monitor the following error
continuously. The following error Δs (green line) is the result of the difference between the set
position s
set
(blue line) and the actual position s
act
(red line). If this deviation exceeds a defined
limit value, a following error warning will be output. Following error warnings are defined as
follows:
Following error warning limit (C3645)
If the difference between the set position and actual position exceeds the setting in C3645, a
following error warning will be output.
Use C3646 to define the limit values for the following error warning. This is the value by which
the following error warning limit must be undershot (C3645) in order for the following error
warning
to be reset. The warning is reset automatically when the set value is undershot.
Following error limit (C3643)
If the difference between the set position and the actual position exceeds the setting in C3643,
the drive will brake to standstill along the set quick stop ramp and switch to the "Trouble" state.
Use the corresponding motor control parameters (C0105) to set the quick stop ramp.
Use C3644 to define the limit values for the following error. This is the value by which
the following error limit (C3643) must be undershot in order for the following error to be reset.
The user must reset the error. Following error monitoring is active whenever the drive is in
motion.
Set position of drive s
set
Actual position of drive s
act
Following error Δs = s
set
– s
act
Figure 10:Generation of following error message
Target position
Starting position
Width of window = 2 .
C3643/000
+ C3643/000
- C3643/000
Following error
message