Specifications

Positioning Drive Setup Ver. 0002 PSU - 13
PSU.7 FOLLOWING ERROR MONITORING
The monitoring of following error prevents the axes from running away.
The drive compares these parameters:
PV189 -S189- FollowingError
PP159 -S159- MonitoringWindow
If FollowingError > MonitoringWindow means that the servo system follows the command
with an excessive delay and it triggers the error message:
Error 205 ExcessivePositionDeviation (DV1 -S11-, Bit 11)
This monitoring of the Following Error is only done if:
• if the drive is in position control mode, (see AP1 -S32-)
• parameter MonitoringWindow is other than zero, PP159 > 0 and
• there is motor torque, TV100 -F1702- = 1.
If parameter PP159 -S159- MonitoringWindow is "zero", the following error
will not be monitored. It is very important to set it to a value other than
zero to prevent the axes from running away out of control.
The CNC also monitors the maximum amount of following error allowed by indicating in its
relevant parameter in the parameter table for each axis at the CNC.
Time
Following
error
Time
Command
Actual
Position
Following
error
Monitoring
window