Operating instructions

140 Application manual Positioning 04/08
Operation mode 21: Homing to negative home switch without encoder ref.
signal., falling edge
Dest.: Falling right edge of home switch
A Home switch active 1
Search direction Positive direction
Speed
Creep speed 1133
B Home switch active 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
v f
v c
v c
Home Switch
21
21
A
B
The homing direction (search direction) depends on the signal status of the home
switch.
A: Homing direction is positive if the home switch is active. Home position is the
falling edge of the home switch. Search for the home position is performed at
Creep
Speed
1133.
B: Homing direction is negative if the home switch is inactive. Travel to rising edge
of home switch is performed at
Fast Speed 1132. When the home switch is passed,
the direction of rotation is reversed. Home position is the falling edge of the home
switch signal. Search for the home position is performed at
Creep Speed 1133.
Application manual Positioning 04/08140