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ASDA-A3

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Motion Control

1. Referencing the limit.

This homing method uses the positive or negative limit as the reference point. When the

limit is detected, you can choose whether to look for the Z pulse and use it as the

reference origin. The searching result is the same regarless of where the start point is. The

ASDA-A3 always looks for the reference point according to the setting to correctly reset

the coordinates.

Motor

Limit

7

(a) Reverse to Z

End

Start point

(b) Go forward to Z

Start point 1

Start point 2

End

(c) Do not look for Z

End

Start point

Z pulse

Limit signal

Refer to the preceding figure for examples.

(a) If you set the servo to look for the Z pulse in the reverse direction, the servo operates

at high speed (first speed setting) and then decelerates once it reaches the limit

(rising-edge triggered). Then the servo switches to low speed (second speed setting)

to look for the Z pulse in the reverse direction. When the servo finds the Z pulse, it

decelerates to a stop, completing the homing procedure.

(b) If you set the servo to look for the Z pulse in the forward direction and the limit signal

at the start position is un-triggered (low, Start point 1), the servo operates at high

speed (first speed setting) and then decelerates once it reaches the limit (rising-edge

triggered). Then the servo switches to low speed (second speed setting) to look for

the Z pulse in the forward direction. When the servo finds the Z pulse, it decelerates

to a stop, completing the homing procedure. If you set the servo to look for the Z

pulse in the forward direction and the limit signal at the start position is triggered

(high, Start point 2), the servo returns to look for the rising-edge limit signal at low

speed (second speed setting). Once it is found, the servo starts to look for the Z

pulse and decelerates to a stop when it finds the Z pulse, completing the homing

procedure. In conclusion, the origin is at the same position after homing with the

same condition regardless of the location of the start point.

Send Quote Requests to info@automatedpt.com

Call +1(800)985-6929 To Order or Order Online At Deltaacdrives.com

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