Operating instructions

04/08 Application manual Positioning 145
Operation mode 26: Homing to right falling edge of home switch without
encoder ref. signal with positive hardware limit switch
Dest.: Falling right edge of home switch
A Home switch active 0
Search direction Positive direction
Speed (before speed change)
Fast Speed 1132
Condition
speed change
Rising edge
home switch
Speed (after speed change)
Creep Speed 1133
B Home switch active 1
Search direction Positive direction
Speed
Creep Speed 1133
C Home switch active 0
Search direction Positive direction
Speed (before reversal of direction of rotation)
Fast Speed 1132
Condition
reversal of direction of rotation
Rising edge
positive HW limit switch
Speed (after reversal of direction of rotation)
Fast Speed 1132
Condition
reversal of direction of rotation
Rising edge
home switch
Speed (after reversal of direction of rotation)
Creep Speed 1133
Home Switch
26
26
26
Pos. HW Limit Switch
A
B
C
v f
v f
v c
v c
v c
v f
A: Homing direction (search direction) is clockwise toward positive HW limit switch if
home switch and limit switch are inactive. The home switch is in search direction.
Home position is the falling edge of the home switch. At first, the operation is per-
formed at
Fast Speed 1132, when the left edge of the home switch is reached, the
speed is changed to
Creep Speed 1133.
B: When homing is started, the home switch is active. Homing direction (search
direction) is clockwise toward positive HW limit switch. Home position is the falling
edge of the home switch. Homing is performed at
Creep Speed 1133.
C: Homing direction (search direction) is clockwise toward positive HW limit switch.
The home switch is not in search direction. The positive limit switch acts as a revers-
ing switch. When the positive limit switch is reached, the direction of rotation is re-
versed, and homing is performed in negative direction. When the home switch is
reached, the direction of rotation is reversed again. At first, the operation is per-
formed at
Fast Speed 1132, when the right edge of the home switch is reached, the
speed is changed to
Creep Speed 1133. Home position is the falling edge of the
home switch.
Application manual Positioning 14504/08