Operating instructions
04/08 Application manual Positioning 131
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. Home position is the first en-
coder ref. signal after the status change of the home switch signal when traveling in
positive direction. Travel to rising (right) edge of home switch is performed at
Fast
Speed
1132. Search for the home position is performed at Creep Speed 1133.
Operation mode
11: Homing to home switch with detection of encoder ref.
signal, homing direction negative (anticlockwise), reversal of direction of
rotation when negative HW limit switch is reached
Dest.: Ref. signal to right of right edge of home switch
A Home switch inactive 0
Search direction Negative direction
Speed (before 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
B Home switch active 1
Search direction Positive direction
Speed
Creep Speed 1133
C Home switch inactive 0
Search direction Positive direction
Speed (before reversal of direction of rotation)
Fast Speed 1132
Condition
reversal of direction of rotation
Rising edge
negative HW limit switch
Speed (after reversal of direction of rotation)
Fast Speed 1132
Condition
speed change
Rising edge
home switch
Speed (after speed change)
Creep Speed 1133
11
11
11
A
B
C
v
f
v
f
v
c
v
c
v
c
Neg. HW Limit Switch
Home switch
Encoder
reference signal
Application manual Positioning 13104/08