Mitsubishi Electric MELSEC-Q QD75M User Manual page 563

12 CONTROL SUB FUNCTIONS
Setting item
Pr.8 Speed limit value
JOG speed limit
Pr.31
value
Refer to Section 5.2 "List of parameters" for setting details.
[2] Precautions during control
If any axis exceeds "
the axis in excess of the speed limit value is controlled at the speed limit value.
The speeds of the other axes interpolated are suppressed depending on their
command speed ratios.
If the reference axis exceeds "
interpolation control, 2- to 4-axis fixed-feed control or 2-axis circular interpolation
control, the reference axis is controlled at the speed limit value (The speed limit
does not function on the interpolation axis side.)
[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 QD75.
The set details are validated after they are written to the QD75.
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
limit value shall be less than or equal to
limit value.)
REMARK
•
Parameters are set for each axis.
•
It is recommended that the parameters be set whenever possible with GX
Configurator-QP. Execution by PLC program uses many PLC programs and
devices. The execution becomes complicated, and the scan times will increase.
Pr.8 Speed limit value" during 2- to 4-axis speed control,
Pr.8
Speed limit value" during 2- to 4-axis linear
Setting details
12 - 24
MELSEC-Q
Factory-set
initial value
Pr.31 JOG speed
Pr.8 Speed
200000
20000