Instruction Manual

1. System summary

1−16

Festo P.BE−GDCP−SFC−LACI−PB−EN en 0812NH

Special features of homing

To reference switch If a reference signal is not found when homing to the

reference switch before the drive reaches a fixed stop or a

limit switch, then the drive will reverse and search for the

switch in the opposite direction. If a reference signal is found

there, the drive runs through the switching

range of the

reference switch. The reference point is subsequently the

following index pulse at the end of the switching range.

To limit switch If a reference signal is not found when homing to the limit

switch before the drive reaches a fixed stop, then homing is

interrupted and a homing error is registered.

Note

Homing error due to incorrect positioning of the limit

switches:

· Position the limit switches such that the switching range

extends over the nearest fixed stop (or end position).

There must no range between the limit switch and fixed

stop (or end position) in which the limit switch is not

actuated (undefined range).

· Note that ferritic elements (e.g.mounting attachments)

in the vicinity of magnetic switches can move the

switching range.