Download Positioning ACU

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 reversing switch. When the positive limit switch is reached, the direction of rotation is reversed, 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 encoder 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.:
A
B
C
Ref. signal to right of right edge of home switch
Home switch inactive
0
Search direction
Negative direction
Speed (before reversal of direction of rotation) Fast Speed 1132
Condition
Rising edge
reversal of direction of rotation
home switch
Speed (after reversal of direction of rotation)
Creep Speed 1133
Home switch active
1
Search direction
Positive direction
Speed
Creep Speed 1133
Home switch inactive
0
Search direction
Positive direction
Speed (before reversal of direction of rotation) Fast Speed 1132
Condition
Rising edge
reversal of direction of rotation
negative HW limit switch
Speed (after reversal of direction of rotation)
Fast Speed 1132
Condition
Rising edge
speed change
home switch
Speed (after speed change)
Creep Speed 1133
vf
A
11
vc
B
vc
11
vf
C
vc
11
Encoder
reference signal
Home switch
Neg. HW Limit Switch
04/08
Application manual Positioning
131