Mitsubishi Electric D75D4, User Manual

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MELSEC-Q
12 CONTROL SUB FUNCTIONS
12.4 Functions to limit the control
Functions to limit the control include the "speed limit function", "torque limit function",
"software stroke limit", and "hardware stroke limit". Each function is executed by
parameter setting or sequence program creation and writing.
12.4.1 Speed limit function
The "speed limit function" limits the command speed to a value within the "speed limit
value" setting range when the command speed during control exceeds the "speed limit
value".
The details shown below explain about the "speed limit function".
[1] Relation between the speed limit function and various controls
[2] Control precautions
[3] Setting method
[1] Relation between the speed limit function and various controls
The following table shows the relation of the "speed limit function" and various
controls.
Control type Speed limit function Speed limit value
OPR
control
Machine OPR control
Pr.8 Speed limit
value
Fast OPR control
Major
positioning
control
Position
control
1-axis linear control
2- to 4-axis linear
interpolation control
1-axis fixed-feed control
2- to 4-axis fixed-feed
control (interpolation)
2-axis circular interpolation
control
3-axis helical interpolation
control
1- to 4-axis Speed control
Speed-position switching control,
Position-speed switching control
Other
control
Current value changing –
Setting value invalid
JUMP instruction, NOP
instruction, LOOP to
LEND
–
Manual
control
JOG operation, Inching operation
Pr.31 JOG speed
limit value
Manual pulse generator operation – Setting is invalid
: Always set
– : Setting not required (Setting value is invalid. Use the initial values or setting values
within a range where no error occurs.)