Mitsubishi Electric MELSEC-LD77MS2 User Manual page 713

[2] Precautions during control
(1) If any axis exceeds "
(2) If the reference axis exceeds "
(3) If any axis exceeds "
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 "
[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
Speed limit value
Pr.8
JOG speed limit
Pr.31
value
: 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.
Pr.8
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.
interpolation control, the reference axis is controlled with the speed limit
value (The speed limit does not function on the interpolation axis side.)
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.
Setting
value
Set the speed limit value (max. speed during control).
Set the speed limit value during JOG operation (max.
speed during control). (Note that "
" shall be less than or equal to "
value
".)
value
13 - 23
Chapter 13 Control Sub Functions
" during 2- to 4-axis speed control,
Speed limit value
Speed limit value
Pr.8
" during 2- to 4-axis linear
Speed limit value
Pr.8
Setting details
Pr.31
Pr.8
" during 2-axis circular
Speed limit value
Pr.8
Factory-set
initial value
200000
JOG speed limit
20000
Speed limit
".