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(3) Movement of the work piece after the completion of the pushing process
(i) The workpiece moves in the pushing direction.
After completion of the pushing operation, if the reaction force from the workpiece becomes smaller,
the electric actuator may move with a force smaller than that specified in the “Trigger LV” of the step
data. In such case, the BUSY output will be turned ON and the INP output will be turned OFF and the
electric actuator moves within the positioning range according to the balance of the force.
During the pushing operation, if the pushing force is kept higher than the value specified by “Trigger
LV” of the step data No.0 for a certain time again, the INP output will be turned ON and BUSY output
will be turned OFF.
Speed
Position
(ii)When the electric actuator moves in the opposite direction of pushing direction
When the electric actuator is pushed back after the pushing move is completed, the electric actuator
is pushed until the reaction force and pushing force are balanced, the BUSY output stays ON and INP
output stays ON.
Speed
Position
8.4 Response time for the driver input signal
Response delay due to the input signal other than pulse signal contains the following factors.
(1) Driver input signal scan delay
(2) Delay due to input signal analysis
(3) Delay of command analysis
Leave an interval of 15 ms (30 ms if possible) or more between input signals and maintain the state of the
signal for 30ms or more, as PLC processing delays and driver scaning delays can occur.
8.5 Methods of interrupting operation
It is possible to stop the electric actuator by interrupting the movement of a positioning operation or
pushing operation.
[Stopping by EMG signal]
If the EMG signal is turned OFF during operation, after the electric actuator decelerates and stops, the
servo will turn OFF so the stopped position is not held. (For the electric actuator with lock, it is held by the
lock function.)
Pulse signal input is ignored while EMG signal is OFF because the servo is OFF.
Pushing start
position
Pushing process
Area of movement instruction
from the positioning unit
Area of movement instruction
from the positioning unit
Reactive force
Pushing start
position
