July 2010 3 – 669
3.3.4 Standstill monitoring
Standstill monitoring is effective during operation both with velocity feedforward and with
following error, as soon as the axes have reached the positioning window.
If the position deviation is greater than the value defined in MP1110.x, the error message
STANDSTILL MONITORING <AXIS> is displayed. The message also appears if, while moving to a
position, an overshoot occurs that is larger than the input value in MP1110.x, or if the axis moves
in the opposite direction when beginning a positioning movement:
8 In MP1110.x, enter a threshold from which the standstill monitoring should go into effect.
MP1110.x Standstill monitoring
Input: 0.0010 to 30.0000 [mm]
Possible
causes of error
The list does not claim to be complete; ask your machine tool builder!
You may add your own experiences!
Analog axes: Excessive offset (drift)
Vertical axes: Poor brake or defective weight balance
Clamped axes: Great mechanical effects during machining
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