Mitsubishi Electric MELSEC-Q Series User Manual page 656

[2] Precaution during control
(1) When changing the speed by the override function during continuous path
(2) The warning "Deceleration/stop speed change" (warning code: 500) occurs
(3) When the speed is changed by the override function during interpolation
(4) When carrying out consecutive speed changes by the override function, be
(5) When a machine HPR is performed, the speed change by the override
(6) When deceleration is started by the override function, the deceleration start
(7) The override function cannot be used during speed control mode or torque
(8) The override function cannot be used during the driver HPR. [CiA402 mode]
[3] Setting the override function
The following shows the data settings and sequence program example for setting
the override value of axis 1 to "200%".
(1) Set the following data. (Use the speed change time chart shown in section
Setting item
Positioning
[Cd.13] operation speed
override
: Refer to Section 5.7 "List of control data" for details on the setting details.
control, the speed change will be ignored if there is not enough distance
remaining to carry out the change.
and the speed cannot be changed by the override function in the following
cases.
(The value set in "[Cd.13] Positioning operation speed override" is validated
after a deceleration stop.)
 During deceleration by a stop command

During automatic deceleration during positioning control
control, the required speed is set in the reference axis.
sure there is an interval between the speed changes of 100ms or more.
(If the interval between speed changes is short, the Simple Motion module
will not be able to track, and it may become impossible to carry out
commands correctly.)
function cannot be carried out after a deceleration start to the creep speed
following the detection of proximity dog ON. When the override is enabled
during HPR and the speed is changed, the override is disabled and the
speed accelerates to the creep speed after the proximity dog ON is detected.
flag does not turn ON.
control mode.
(2) below as a reference, and set using the sequence program shown in
section (3).)
Setting
value
200 Set the new speed as a percentage (%).
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Chapter 13 Control Sub Functions
Setting details Buffer memory address
4313+100n
n: Axis No.-1