Lenze PM94P01C - Manual (Page 65)

PM94P01C 63
Programming
2.15.9.3 Homing Method 3: Homing on the Positive Home Switch & Index Pulse
Using this method the initial direction of movement is positive (if the homing switch is inactive). The home position is the
first index pulse to the negative of the position where the homing switch becomes active.
Axis will accelerate to
fast homing velocity in the positive direction and continue until Homing Switch (selectable via
Var_Home_Switch_Input Variable) is activated (rising edge) shown at position A. Axis then decelerates to zero velocity.
If the homing switch is already active when the homing routine commences then this initial move is not executed. Axis
will then accelerate to
fast homing velocity in negative direction. Motion will continue until first the falling edge of the
Homing switch is detected (position B) and then the rising edge of the first index pulse (position 3) is detected.
A
B
3
3
B
Index Pulse
(via Input C3)
Homing Switch
(Var_Home_Switch_Input)
Figure 27: Homing Method 3
2.15.9.4 Homing Method 4: Homing on the Positive Home Switch & Index Pulse
Using this method the initial direction of movement is negative (if the homing switch is active). The home position is the
first index pulse to the positive of the position where the homing switch becomes inactive.
Axis will accelerate to
fast homing velocity in the negative direction and continue until Homing Switch (selectable via
Var_Home_Switch_Input Variable) is deactivated (falling edge) shown at position A. Axis then decelerates to zero
velocity. If the homing switch is already inactive when the homing routine commences then this initial move is not
executed. Axis will then accelerate to
fast homing velocity in positive direction. Motion will continue until first the rising
edge of the Homing switch is detected (position B) and then the rising edge of the first index pulse (position 4) is
detected.
A
B
4
4
B
Index Pulse
(via Input C3)
Homing Switch
(Var_Home_Switch_Input)
Figure 28: Homing Method 4