Mitsubishi Electric MELSEC-Q QD75M User Manual page 584

12 CONTROL SUB FUNCTIONS
Setting item
Positioning
Cd.13
operation speed
override
Refer to Section 5.7 "List of control data" for details on the setting details.
[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 "
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 QD75 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).)
Setting
value
200 Set the new speed as a percentage (%).
Cd.13
Positioning operation speed override" is validated
Setting details
12 - 45
MELSEC-Q
Buffer memory address
Axis Axis Axis Axis
1 2 3 4
1513 1613 1713 1813