Справочник Пользователя для Mitsubishi Electronics QD75MH2

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MELSEC-Q

12 CONTROL SUB FUNCTIONS

[2] Precaution during control

(1) When changing the speed during continuous path control, the speed change

will be ignored if there is not enough distance remaining to carry out the
change.

(2) A warning "Deceleration/stop speed change (warning code: 500)" occurs

and the speed cannot be changed 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

(3) When the speed is changed during interpolation control, the required speed

is set in the reference axis.

(4) When deceleration is started by the override function, the deceleration start

flag does not turn ON.

(5) When carrying out continuously override, be sure there is an interval

between the override execution of 100ms or more.
(If the interval between override is short, the QD75MH will not be able to
track, and it may become impossible to carry out commands correctly.)

[3] Setting the override function

The following shows the data settings and PLC program example for setting the
override value of axis 1 to "200%".
(1) Set the following data. (Use the start time chart shown in section (2) below

as a reference, and set using the PLC program shown in section (3).)

Buffer memory address

Setting item

Setting

value

Setting details

Axis

Cd.13

Positioning
operation speed
override

200

Set the new speed as a percentage (%).

1513 1613 1713 1813

Refer to Section 5.7 "List of control data" for details on the setting details.