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MITSUBISHI CNC
III Functional Specifications
In the rapid traverse constant inclination acceleration/deceleration method, the acceleration has been
treated constantly because this torque characteristic is not considered. So, it is necessary to use a minimum
acceleration within the used speed range. Therefore, the margin of acceleration must be had in a low-speed
range. Or if the acceleration is used to its maximum, the upper limit of the rotation speed must be slowed.
Then, to use the servomotor ability to its maximum, acceleration/deceleration to which the torque
characteristic is considered is carried out by the rapid traverse constant inclination multi-step acceleration/
deceleration method.
The acceleration/deceleration patterns in the case where rapid traverse constant inclination multi-step
acceleration/deceleration are performed are as follows.
Speed
Acceler-
ation
(a) Rapid traverse constant inclination multi-step
acceleration/deceleration
III - 56
Time
Number of steps is
automatically adjusted
by parameter setting.
Time
Speed
Acceler-
ation
It was necessary to slow down the
acceleration for high speed rotation.
(b) Rapid traverse constant inclination
acceleration/deceleration
Time
Time
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