
B-65150E/04 3. α SERIES PARAMETER ADJUSTMENT
− 89 −
The measurement data of Fig. 3.4.5 (e) has been obtained under the
condition below. Fine acceleration/deceleration and feed-forward are
not used.
• Rapid traverse rate: 20000 mm/min
• Rapid traverse time constant: 150 ms
• Position gain: 30/s
• Travel distance: 100 mm
When the in-position width is 20 pulses, a time of about 180 ms is
required from distribution completion to positioning. Reducing this
time can speed up positioning.
Fig. 3.4.5 (e) Measurement of time before adjustment
<1> Default parameter setting for fine acceleration/deceleration and
feed-forward
Set the parameters according to Table 3.4.5. By setting the default
parameters, the time required for positioning can be much
reduced.
Table 3.4.5 Default parameters for rapid traverse positioning adjustment
Default parameter
Item
Series 16 Series 15 Setting
Rapid traverse feed-forward
enable
No. 1800, B3 No. 1800, B3 1
Fine acceleration/deceleration
function enable
No. 2007, B6 No. 1951, B6 1
Linear-type fine
acceleration/deceleration
No. 2009, B2 No. 1749, B2 1
Fine acceleration/deceleration
time constant
No. 2109(*1) No. 1702(*2) 40
Feed-forward enable No. 2005, B1 No. 1883, B1 1
Feed-forward coefficient No. 2092(*1) No. 1985(*2) 9700
Velocity feed-forward coefficient No. 2069(*1) No. 1962(*2) 100
*1 When using different values for cutting and rapid traverse,
use the cutting feed/rapid traverse switchable fine
acceleration/deceleration function according to Subsec.
3.4.2, "Cutting Feed/Rapid Traverse Switchable Function."
*2 Series 15-B does not support the cutting feed/rapid traverse
switchable function.
Positional
deviation
Command from
the CNC
Servo delay time of
about 180 ms
In-position width