Mitsubishi Electric MELSEC-L LD75P User Manual page 784

Term
OPERATION PATTERN
CIRCULAR INTERPOLATION
ACCELERATION TIME
REGENERATIVE BRAKE OPTION
ROTARY TABLE
EXTERNAL REGENERATIVE BRAKE
RESISTOR
REFERENCE AXIS SPEED
782
The kind of operation to be carried out after executing the positioning data is determined.
• If "POSITIONING COMPLETE" is selected, the operation will stop after the positioning is complete.
• If "CONTINUOUS POSITIONING CONTROL" is selected, the next data No. will be automatically executed
after the positioning is complete.
• If "CONTINUOUS PATH CONTROL" is selected, the positioning will not be completed. Only the speed will be
automatically changed, and the next data No. will be executed.
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
Collision
The parameter acceleration time refers to the time from a stopped state to the time the speed limit value is
reached, so it becomes proportionally shorter as the setting speed decreases. The acceleration time is
determined by factors such as machine inertia, motor torque, and load resistance torque.
Speed 0
Acceleration time
This function is an option. It is used when carrying out highly repetitive acceleration/deceleration.
Refer to the term "EXTERNAL REGENERATIVE BRAKE RESISTOR".
A round table on which the workpiece is placed. Positioning control is carried out while rotating the workpiece in
a 360 range.
This is also called the regenerative brake.
When a machine is moved with a motor, power is normally supplied to the motor from an amplifier. However, the
rotation energy in the motor and machine counterflows (regenerates) to the amplifier when the motor is
decelerating or when driving a descending load.
The external regenerative resistor consumes this regeneration energy with resistance, obtains the regenerative
brake torque, and enables the full capacity of the regeneration system during stopping.
It is used when carrying out highly repetitive acceleration/deceleration.
This is the speed of the reference axis during interpolation operations.
Y axis speed
(interpolation
axis)
Description
Obstacle
D
Speed limit value
Setting speed
Time
X axis speed
(reference axis)
Reference axis speed