Mitsubishi A1SD75M1, User Manual

Page: 702 / 746

Appendix - 34
MELSEC-A
APPENDICES
BALL SCREW
This is a type of screw, with balls lined up in
the threads like ball bearings. This reduces
backlash, and enables rotation with little force.
Female thread
Male thread
BIAS SPEED AT START
A large amount of torque is required when the
machine starts moving, but the torque may be
unstable at speed 0. Therefore, movement can
be smoothly carried out by starting the
movement at a given speed from the
beginning. The bias speed at start is the speed
set at that start.
Full speed
Speed 0
Bias speed
BUSY
The device is doing some other work. It is in a
positioning operation or in dwell time.
CCW (Counterclockwise)
Rotation in the counterclockwise direction. In
the motor, this is determined looking from the
shaft end side. Also refer to "CW".
CHANGE signal
The CHANGE signal is an external signal used
to change the speed/position control from the
speed control being executed to position
control.
CIRCULAR INTERPOLATION
Automatic operation in which the machine path
makes a circle when positioning is carried out
by simultaneously operating both the
longitudinal feed and latitudinal feed motors.
The normal unit is 90
°
. Round shapes can be
created with this type of interpolation, and
obstacles in the machine path can also be
avoided. Refer to the terms "INTERPOLATION
OPERATION" and "LINEAR
INTERPOLATION"
A B C D
Obstacle
Collision
COMPOSITE SPEED
The movement speed for the target control
during interpolation operations.
Y axis
speed
Composite speed
X axis speed
CONTINUOUS POSITIONING CONTROL
Refer to the term "OPERATION PATTERN".
CONTROL UNIT
This is one type of positioning reference data.
The unit to be used is designated as mm, inch,
degree, or pulse.
CP CONTROL (Continuous Path Control)
Continuous path is a control method in which a
path is followed without interrupting such as in
uniform speed control.