8 Home Position Return and Internal Positions
176 SD780 Series Servo Technical Manual
a.Start the home position return →Home position signal OFF →Search for the falling edge of
home position at high speed reverse direction →Touch the reverse limit →Search for the rising
edge of home position at high speed forward direction →Decelerate to 0 →Search for the falling
edge of home position at low speed reverse direction →Stop after searching for the rising edge of
home position at low speed forward direction.
29-c
-H
H
-L
L
Home position
signal
Forward
direction
Running route
Limit signal
Motor
Home position
signal
Limit signal
Home position return method 29-c
Home position return method 30
（
6098 00h =30
）
a.Start the home position return →Home position signal OFF →Search for the falling edge of
home position at high speed reverse direction →Decelerate to 0 →Search for the rising edge of
home position at low speed forward direction →Stop after searching for the falling edge of home
position at low speed reverse direction.
30-a
-H
L
-L
Home position
signal
Forward
direction
Running route
Limit signal
Motor
Home position
signal
Limit signal
Home position return method 30-a
