Mitsubishi Electric MELSEC-L Series, Руководство пользователя

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Chapter 13 Control Sub Functions
[2] Precautions during control
(1) If any axis exceeds "
Pr.8
Speed limit value
" during 2- to 4-axis speed control,
the axis exceeding the speed limit value is controlled with the speed limit
value. The speeds of the other axes being
interpolated are suppressed by
the command speed ratio.
(2) If the reference axis exceeds "
Pr.8
Speed limit value
" during 2-axis circular
interpolation control, the reference axis is controlled with the speed limit
value (The speed limit does not function on the interpolation axis side.)
(3) If any axis exceeds "
Pr.8
Speed limit value
" during 2- to 4-axis linear
interpolation control or 2- to 4-axis fixed-feed control, the axis exceeding
the speed limit value is controlled with the speed limit value. The speeds of
the other axes being interpolated are suppressed by the movement
amount ratio.
POINT
When the "reference axis speed" is set during interpolation control, set so the
major axis side becomes the reference axis. If the minor axis side is set as the
reference axis, the major axis side speed may exceed the "
Pr.8
Speed limit value
".
[3] Setting the speed limit function
To use the "speed limit function", set the "speed limit value" in the parameters
shown in the following table, and write them to the Simple Motion module.
The set details are validated at the next start after they are written to the Simple
Motion module.
Setting item
Setting
value
Setting details
Factory-set
initial value
Pr.8
Speed limit value Set the speed limit value (max. speed during control). 200000
Pr.31
JOG speed limit
value
Set the speed limit value during JOG operation (max.
speed during control). (Note that "
Pr.31
JOG speed limit
value
" shall be less than or equal to "
Pr.8
Speed limit
value
".)
20000
: Refer to Section 5.2 "List of parameters" for setting details.
REMARK

Parameters are set for each axis.

It is recommended that the parameters be set whenever possible with GX Works2.
Execution by sequence program uses many sequence programs and devices. The
execution becomes complicated, and the scan times will increase.