Lenze PM94P01C - Manual (Page 79)

PM94P01C 77
Programming
2.15.9.19 Homing Method 23: Homing without an Index Pulse
Using this method the initial direction of movement is positive (if the homing switch is inactive). The home position is the
leading edge of the homing switch.
Axis will accelerate to fast homing velocity in the positive direction and continue until the 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 the negative direction. Motion will continue until the falling edge of
the homing switch is detected (position B), where the axis will decelerate to 0 velocity.
Axis will then accelerate to slow homing velocity in the positive direction. Motion will continue until the rising edge of the
homing switch is detected (position C), where the axis will decelerate to 0 velocity.
Axis will then accelerate to slow homing velocity in the negative direction. Motion will continue until the falling edge of
the homing switch is detected (position 23). This is the home position (excluding offset).
NOTE: if the axis is on the wrong side of the homing switch when homing is started then the axis will move positive until
it contacts the positive limit switch (A2). Upon activating the positive limit switch the axis will change direction (negative)
following the procedure as detailed above but ignoring the initial move in the positive direction.
A
B
23
C
23
B
C
Homing Switch
(Var_Home_Switch_Input)
Figure 43: Homing Method 23