Mitsubishi Electronics QD75MH2 ユーザーズマニュアル
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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 function", "hardware stroke limit function", and "forced stop
function". Each function is executed by parameter setting or PLC program creation and
writing.
"software stroke limit function", "hardware stroke limit function", and "forced stop
function". Each function is executed by parameter setting or PLC 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".
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] Precautions during control
[3] Setting the speed limit function
[1] Relation between the speed limit function and various controls
[2] Precautions during control
[3] Setting the speed limit function
[1] Relation between the speed limit function and various controls
The following table shows the relation of the "speed limit function" and various
controls.
controls.
Control type
Speed limit function Speed limit value
Machine OPR control
OPR
control
control
Fast OPR control
1-axis linear control
2 to 4-axes linear
interpolation control
interpolation control
1-axis fixed-feed control
2 to 4-axes fixed-feed
control (interpolation)
control (interpolation)
Position
control
control
2-axis circular interpolation
control
control
1 to 4-axes Speed control
Speed-position switching control,
Position-speed switching control
Position-speed switching control
Pr.8
Speed limit
value
Current value changing
–
Major
positioning
control
positioning
control
Other
control
control
JUMP instruction, NOP
instruction, LOOP to
LEND
instruction, LOOP to
LEND
–
Setting value invalid
JOG operation, Inching operation
Pr.31
JOG speed
limit value
limit value
Manual
control
control
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.)