Mitsubishi A1SD75M3 User Manual page 523

12 CONTROL AUXILIARY FUNCTIONS
Setting item
Positioning
Cd.18 operation speed
override
* Refer to section "5.7 List of control data" for details on the setting details.
Positioning start signal
PLC READY signal
AD75 READY signal
Start complete signal
BUSY signal
Positioning complete signal
Error detection signal
(2) Precaution during control
(a) 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.
(b) A warning "deceleration and stop speed change" (warning code: 500)
occurs and the speed cannot be changed in the following cases.
•
During deceleration by a stop command
•
During automatic deceleration during positioning control
(c) When the speed is changed during interpolation control, the required speed
is set in the reference axis.
(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%".
(a) Set the following data. (Use the start time chart shown in section (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 (%).
(b) The following shows a time chart for changing the speed using the override
function.
V
[Y10]
[Y1D]
[X0]
[X1]
[X4]
[X7]
[XA]
Cd. 18 Positioning operation
speed override
Fig. 12.28 Time chart for changing the speed using the override function
Setting details
200
12 - 51
MELSEC-A
Buffer memory address
Axis 1 Axis 2 Axis 3
1159 1209 1259
Dwell time
t