Mitsubishi Electric MELSEC-L LD75D, Руководство пользователя

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CHAPTER 12 CONTROL SUB FUNCTIONS
12
12.
5
F
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t
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Det
ails
(2) Control precautions
• When changing the speed by the "override function" during continuous path control, the speed change will
be ignored if there is not enough distance remaining to carry out the change.
• A warning "Deceleration/stop speed change (warning code: 500)" occurs 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.)
• When the speed is changed by the "override function" during interpolation control, the required speed is set
in the reference axis.
• When carrying out consecutive speed changes by the "override function", be sure there is an interval
between the speed changes of 100ms or more.
• When a machine OPR is performed, the speed change by the "override function" cannot be carried out after
a deceleration start to the creep speed following the detection of near-point dog ON. In this case, a request
for speed change is ignored.
• When deceleration is started by the override function, the deceleration start flag does not turn ON.
(3) Setting method
The following shows the data settings and program example for setting the override value of axis 1 to "200%".
(a) Set the following data.
(Use the start time chart shown in section (b) below as a reference, and set data using the program shown in
section (c).)
Refer to

Page 211, Section 5.7 for the information on detail settings.
During deceleration by a stop command
During automatic deceleration during positioning control
(If the interval between speed changes is short, the LD75 will not be able to track, and it may become
impossible to carry out commands correctly.)
Setting item Setting value Setting details
Buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
[Cd.13]
Positioning
operation speed
override
200 Set the new speed as a percentage (%). 1513 1613 1713 1813