IAI America ERC2 - Manual (Page 99)


5. Data Entry <Basic>
76
5.2 Explanation of Functions
5.2.1 Positioning Mode Push = 0
The actuator moves to the target position set in the “Position” field of the position table.
5.2.2 Push & Hold Mode Push = Other than 0
(1) Work part was contacted successfully
After reaching the target position set in the “Position” field of the position table, the actuator moves at the push speed
for the distance set in the “Positioning band” field.
If the actuator contacts the work part before reaching the end of the specified distance, the controller will determine
that the “push & hold operation has completed” and turn ON the position complete signal.
„ The push speed is set by parameter No. 34.
The factory setting is different for each actuator in accordance with the actuator’s characteristics.
Set an appropriate speed by considering the material and shape of the work part, and so on.
Take note that the maximum speed is “20 [mm/s]” and that you should set a speed not exceeding this value.
„ When setting a positioning band, consider the mechanical variations of the work part and set a distance slightly
longer than the last position.
„ “Completion of push & hold operation” is determined by the combination of the current-limiting value set in the
“Push” field of the position table and the push completion judgment time set in parameter No. 6.
Set an appropriate condition by considering the material and shape of the work part, and so on.
For details, refer to 8, “Parameter Settings.”
Warning
x If the actuator contacts the work part before reaching the target position, a servo alarm will
occur. Pay due attention to the relationship between the target position and the position of the
work part.
x The actuator continues to push the work part at the push force at standstill determined by the
current-limiting value. Since the actuator is not inactive, exercise due caution when handling the
machine in this condition.
The position complete
signal turns ON here.
Speed
Moving distance
Positioning band
Target position
Time
The position complete signal turns ON here, because the
actuator has contacted the work part and the controller has
determined that the push & hold operation has completed.
Speed
Moving distance
Positioning band
(Maximum push distance)
Target position