Learn Compensation Characteristics: Qeclrnon, Qeclrnof - Siemens sinumerik 840d Programming Manual

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13.2 Learn compensation characteristics: QECLRNON, QECLRNOF

840D 840D
NCU 571 NCU 572
NCU 573
13.2 Learn compensation characteristics: QECLRNON, QECLRNOF
Explanation of the commands
QECLRNON
(axis.1,...4)
QECLRNOF
Function
Quadrant error compensation (QEC) reduces
contour errors that occur on reversal of the
traversing direction due to mechanical non-linearities
(e.g. friction, backlash) or torsion.
On the basis of a neural network, the optimum
compensation data can be adapted by the control
during a learning phase in order to determine the
compensation characteristics automatically.
Learning can take place simultaneously for up to
four axes.
Sequence
The traversing movements of the axes required for
the learning process are generated with the aid of an
NC program. The learning movements are stored in
the program in the form of a learning cycle.
First teach-in
Sample NC programs contained on the disk of the
standard PLC program are used to teach the
movements and assign the QEC system variables in
the initial learning phase during startup of the
control:
 Siemens AG 2000. All rights reserved
SINUMERIK 840D/840Di/810D/FM-NC Programming Guide Advanced (PGA) – 04.00 Edition
810D 840Di
Activate "Learn quadrant error compensation" function
Deactivate "Learn quadrant error compensation" function
Additional Functions
x/ µ
II
10
III
13
I
10
µ
x/
IV
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