Operating instructions

04/08 Application manual Positioning 143
Operation mode 24: Homing to left rising edge of home switch without
encoder ref. signal with positive hardware limit switch
Dest.: Rising left edge of home switch
A Home switch active 0
Search direction Positive direction
Speed
Fast Speed 1132
B Home switch active 1
Search direction Negative direction
Speed (before reversal of direction of rotation)
Fast Speed 1132
Condition
reversal of direction of rotation
Falling edge
home switch
Speed (after reversal of direction of rotation)
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
Falling edge
home switch
Speed (after reversal of direction of rotation)
Creep Speed 1133
Home Switch
24
24
24
Pos. HW Limit Switch
A
B
C
v c
v c
v f
v f
v f
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 rising edge of the home switch. During the whole operation,
homing is performed at
Fast Speed 1132.
B: When homing is started, the home switch is active. Homing direction (search
direction) is anticlockwise toward negative HW limit switch. Travel to falling edge of
home switch signal is performed at
Fast Speed 1132. When the home switch is
passed in negative direction, the direction of rotation is reversed. Home position is
the rising 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
passed, the direction of rotation is reversed again. 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. Home position is the rising edge of the
home switch.
Application manual Positioning 14304/08