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CHAPTER 12 CONTROL SUB FUNCTIONS
12
12.
5
F
unct
ions
t
o C
hange t
he C
ont
rol
Det
ails
12.5
Functions to Change the Control Details
Functions to change the control details include the "speed change function", "override function",
"acceleration/deceleration time change function" and "torque change function". Each function is executed by
parameter setting or program creation and writing.
Both the "speed change function" or "override function" change the speed, but the differences between the functions
are shown below. Use the function that corresponds to the application.
(1) Speed change function
• The speed is changed at any time, only in the control being executed.
• The new speed is directly set.
(2) Override function
• The speed is changed for all control to be executed. (Note that this excludes manual pulse generator
operation.)
• The new speed is set as a percent (%) of the command speed.
12.5.1
Speed change function
The "Speed change function" is used to change the speed during control to a newly designated speed at any time.
The new speed is directly set in the buffer memory, and the speed is changed by a speed change command ([Cd.15]
Speed change request) or external command signal.
During the machine OPR, a speed change to the creep speed cannot be carried out after deceleration start because
the near point dog ON is detected.
The details shown below explain about the "speed change function".
• Control details
• Control precautions
• Setting the speed change function from the CPU module
• Setting the speed change function using an external command signal
(1) Control details
The following drawing shows the operation during a speed change.
V
V1
V2
V3
t
Speed changes to V2.
Operation during
positioning by V1.
Speed changes to V3.
Md. 40 In speed change processing flag
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