Operating instructions

04/08 Application manual Positioning 123

Operation mode 4: Homing to positive home switch with detection of en-

coder ref. signal, home position is the first ref. signal after the home

switch signal has changed

Dest.: Ref. signal to right of left edge of positive home switch

A Home switch inactive 0

Search direction Positive direction

Speed

Creep Speed 1133

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

Encoder

reference signal

Home switch

The homing direction (search direction) depends on the signal status of the home

switch.

A: Homing direction is positive if the home switch is inactive. Home position is the

first encoder ref. signal after the home switch is reached. Search for the home posi-

tion is performed at

Creep Speed 1133.

B: Homing direction is negative if the home switch is active. Travel to falling 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 first encoder ref. signal

after the rising edge of the home switch signal. Search for the home position is per-

formed at

Creep Speed 1133.

Application manual Positioning 12304/08