
B-63943EN-1/02 7.FEEDRATE CONTROL/ACCELERATION AND DECELERATION CONTROL
- 719 -
7.1.7 Override
7.1.7.1 Rapid traverse override
Overview
An override of four steps (F0, 25%, 50%, and 100%) can be applied to
the rapid traverse rate. F0 is set by a parameter (No. 1421).
The 1% step rapid traverse override selection signal or 0.1% step rapid
traverse override selection signal enables a rapid traverse override to
be selected in steps of 1% or 0.1% over a range of 0% to 100%.
Rapid traverse rate
10m/min
Override
50%
5m/min
Fig. 7.1.7 (a) Rapid traverse override
- Feedrate
Actual feedrate is obtained by multiplying the rapid traverse rate
preset by parameter No.1420 by the override value determined by this
signal, whether in automatic or manual operation (including manual
reference position return).
- F0 rate
For F0 value, an absolute value is set by parameter No.1421 within a
range of 0 to rapid traverse rate (for each axis).
- 1% step rapid traverse override selection signal
1% step rapid traverse override selection signal HROV determines
whether rapid traverse override specified with rapid traverse override
signals ROV1 and ROV2 is used or 1% step rapid traverse override is
used.
When signal HROV is 0, override is applied to the rapid traverse rate
using signals ROV1 and ROV2.
When signal HROV is 1, ROV1 and ROV2 are ignored, 1% step rapid
traverse override signals *HROV0 to *HROV6 being used to override
the rapid traverse rate.