Operating instructions

04/08 Application manual Positioning 129

Pos. HW Limit Switch

Home switch

Encoder

reference signal

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.

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

next encoder ref. signal. Search for the home position is performed at

Creep Speed

1133.

B: When homing is started, the home switch is active. Homing direction (search

direction) is clockwise toward positive HW limit switch. Travel to falling edge of ho-

me switch is performed at

Fast Speed 1132. When the home switch is passed in

positive direction, the direction of rotation is reversed. Home position is the next

encoder ref. signal. 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. Home position is the first

encoder ref. signal after the home switch is reached. During the whole operation,

homing is performed at

Fast Speed 1132.

Application manual Positioning 12904/08