8 Home Position Return and Internal Positions
153 SD780 Series Servo Technical Manual
c.Start the home position return →Home position OFF →Search for the falling edge of home
position at high speed forward direction→Touch the forward limit →Search for the rising edge of
home position at high speed reverse direction →Decelerate to 0 →Search for the falling edge of
home position at low speed forward direction →Search for the rising edge of home position at low
speed reverse direction →Search for the Z pulse in reverse direction.
Motor
Home position
signal
Forward
direction
9-c
Home position
signal
Z pulse
Running
route
Limit signal
Limit signal
H
-H
L
-H
-L
Home position return method 9-c
Home position return method 10
a.Start the home position return →Home position signal OFF →Search for the falling edge of
home position at high speed forward direction→Decelerate to 0 →Search for the rising edge of
home position at low speed reverse direction →Search for the falling edge of home position at low
speed forward direction →Search for the Z pulse in forward direction.
Motor
Home position
signal
Forward
direction
10-a
Home position
signal
Z pulse
Running route
Limit signal
Limit signal
H
-L
H
L
Home position return method 10-a
