
B-63784EN-1/01 OPERATION 9.SETTING AND DISPLAYING DATA
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Setting of parameters of axis type on an axis-by-axis basis
When an item of a parameter of axis type is specified on the adjustment
screen, the same value is set for all axes except an axis specified by bit
7 (NFF) of parameter No. 1009. The display indicates a setting for the
first axis.
When a different value is to be set for each axis, enter data on the
parameter screen. (A parameter number check can be made using the
[AUX] soft key.) If a different value is set for each axis, an asterisk (*)
is prefixed to the numeric value indication of each item.
Fig. 9.18 (d) Example of Setting on an Axis-by-Axis Basis
Note
NOTE
1 Settings made in automatic setting or automatic adjustment are only guideline
values. The actual error may differ from that expected due to causes such as a
servo system delay.
2 If the gear reduction ratio of a rotation axis is very large, an overflow may occur in
feed-forward calculation by the servo software, resulting in an alarm (rotation axis
digital servo parameter error) immediately after automatic adjustment. In such a
case, set bit 4 of parameter No. 1804 for the axis to 1.
3 If vibration occurs on an axis after automatic setting, set bit 4 of parameter No.
1884 for the axis to 0. In a very rare case, vibration may occur as a result of the
machine characteristics when bit 4 of parameter No. 1884 is set to 1.
4 If parameter No. 1518 is set to specify a lower feed-forward coefficient limit in
automatic adjustment, the lower limit value is always used when a finish above a
certain level is specified. For this reason, values such as a time constant after
interpolation calculated using the feed-forward coefficient become identical.
Thus, automatic adjustment can produce the same results even though a
different finish level is specified. In such a case, set parameter No. 1518 to 0,
then make another automatic adjustment.