Yaskawa MP900 Series Motion Programming Manual - Manual (Page 122)

Advanced Programming
3.2.3 S-CURVE TIME CONSTANT CHANGE (SCC)
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1. The setting of the parameter OWxx0D/OWxx38 (Linear Deceleration Time Setting) for each
axis is changed by the DCC command.
2. For the MP920 (SVA-01, -02) Module, Owxx0D = xxxx can also be programmed in the pro-
gramming instead of using the DCC command.
3. For the MP930, set the time to decelerate from the feed speed set by the VEL command to the
time that the reference distribution is completed. For the Machine Controllers other than the
MP930, set the time to decelerate from the rated speed to the time that the reference distribution
is completed.
4. If using a SGD-VVVN or SGDB−VVAN SERVOPACK, the DCC command cannot be used.
J Programming Example
INC;
VEL [axis1]6000; Feed speed setting
DCC [axis1]1000; Deceleration time 1 second
MOV [axis1]100000; Positioning
DCC [axis1]500; Deceleration time 0.5 seconds
MOV [axis1]50000;
V
500 ms 1000 ms
t
Figure 3.17 Programming Example of DECELERATION TIME CHANGE (DCC)
3.2.3 S-CURVE TIME CONSTANT CHANGE (SCC)
J Overview
This command sets the S-curve acceleration/deceleration function parameter that controls vibra-
tions of the machine system during acceleration and deceleration. It changes the S-curve time
constant of each axis.
J Description
The SCC command is designated as follows:
SCC [axis1] − [axis2] −⋅⋅⋅ ;
S-curve time constant
The SCC command changes the S-curve time constant of each axis. The S-curve time constant
of an unspecified axis is not changed.
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