Specifications

A - 56
SPEED CHANGE GEAR
This is a transmission module in the
mechanism program for the virtual mode. The
main shaft's rotation speed is changed and
conveyed to the roller output module.
SPEED CHANGEOVER CONTROL
With this control, positioning is carried out to
the end point of the movement amount while
changing the speed at the speed changeover
point during positioning control.
SPEED CONTROL
This control is suitable for endless rotation in a
single direction, such as for a conveyor.
Commands include the VF forward run, VR
reverse run commands (position loop) and
VVF forward run, VVR reverse run commands
(speed loop). The current feed value is cleared
to zero simultaneously with starting. Rotation
takes place at the preset speed, the current
feed value is not incremented/decremented,
and the axis decelerates to a stop when the
stop command is input.
The upper and lower limit values for the stroke
limit are ignored.
SPEED INTEGRAL COMPENSATION
This is one item in the servo parameters of the
positioning data. It is used to raise the
frequency response during speed control, and
improve transient characteristics.
When adjusting the speed loop gain, raising
this value is effective if the overshooting during
acceleration/deceleration remains large.
This compensation is set in ms units.
SPEED LIMIT VALUE
This is the max. speed for positioning. Even if
other data is mistakenly set to a higher speed
than this, the positioning will be carried out at
this speed limit value when it is set in the
parameters. The acceleration time becomes
the time to accelerate from a stopped state to
the speed limit value, and the deceleration
time becomes the time to decelerate from the
speed limit value to a stopped state.
SPEED LOOP GAIN
This is one item in the servo parameters of the
positioning data. It expresses the speed of the
control response during speed control. When
the load inertia moment ratio increases, the
control system speed response decreases and
the operation may become unstable. If this
happens, the operation can be improved by
raising this setting value.
The overshoot will become larger if the speed
loop gain is raised too far, and motor vibration
noise will occur during operation and when
stopped.
SPEED LOOP MODE
Refer to the term "POSITION LOOP MODE".
SPEED/POSITION CONTROL
Incremental positioning control is carried out
when a changeover signal is input from an
external device during speed control.
V
t
During speed
control
Set movement
amount
During posi-
tion control
SSCNET
Abbreviation of Servo System Controller
Network.
Connection method that improves the reliability
through high-speed serial communication
between the motion controller and servo
amplifier.
Wiring work has been simplified with a one-
touch connector.
START COMPLETE
This signal gives an immediate response
notifying the user that the motion controller that
was started is now in a normal state and can
start positioning.
Servo program start
Start completion signal
Normal