When an axis moves to a specific coordinate, the control waits for the axis to settle within the range defined by Parameter 1829 before signaling that the move is complete.
A faulty servo drive may not be providing enough torque to maintain the position, leading to deviation.
Locate the physical manual or the USB backup drive for your specific machine serial number. fanuc parameter 1829
EXCESS ERROR (STOP)
This is the baseline gain for normal machining. Generally, Parameter 1829 is matched exactly to the value in Parameter 1825 so the axis dynamics remain linear. When an axis moves to a specific coordinate,
Increased Parameter 1829 to 30,000 . Alarm gone. No mechanical issue – the factory parameter was simply incorrect for the machine's rapid speed.
When the axis is commanded to stop and the position error exceeds the threshold defined in Parameter 1829, the system triggers a servo alarm and immediately halts servo operation to prevent potential damage to the machine or workpiece. EXCESS ERROR (STOP) This is the baseline gain
The appropriate value for parameter 1829 depends heavily on the machine type, control system, and application. The table below offers general reference ranges for common scenarios.
When working with FANUC parameter 1829, keep the following tips and precautions in mind:
A recent crash may have bent a ballscrew or misaligned a bearing housing. 3. Servo Tuning and Electrical Issues