Speed Control ( ) - Mitsubishi Electric MELSEC Q Series Programming Manual

6 POSITIONING CONTROL

6.14 Speed Control ( )

Servo Positioning
instruction method
VVF
—
VVR
[Control details]
(1) Speed control for the specified axis is executed.
(2) Speed control not includes positioning loops for control of servo amplifiers.
It can be used for stopper control, etc. so that it may not become error excessive.
POINT
Refer to Section 7.7 for performing speed control that does not include positioning
loops without using the servo program.
(3) Speed control ( ) uses the VVF (Forward) and VVR (Reverse) servo instructions.
Common
Number of
control axes
1
(1) Controls the axis at the specified speed until the input of the stop command after
starting of the servo motors.
• VVF ....... Forward direction start
• VVR ....... Reverse direction start
(2) Current value or deviation counter do not change at "0".
(3) When the setting for "torque" is set in the servo program and an indirect setting
made, the torque limit value can be changed during operation by changing the
value of the indirect device.
(4) The stop command and stop processing are the same as for speed control (I).
QDS
Items set using MT Developer2
Arc
6 - 96
Parameter block Others
Speed
change
Valid
: Must be set
: Set if required