Festo SFC-LAC CO Series, Manual

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5. Commissioning
5−58
Festo P.BE−SFC−LAC−CO−EN en 0708NH
5.6 Drive functions
5.6.1 Reference travel
When the device is switched on, reference travel (homing)
must be carried out before a positioning task can be
executed.
The drive references against a stop or a reference switch. A
stop is reached when there is an increase in the motor current
at the same time as the drive shaft comes to a stand. As the
drive must not position continuously against the stop, it must
move at least 1 mm into the stroke range again (offset axis
zero point).
Sequence
1. Search for the reference point in accordance with the
configured method.
2. Move from reference point to axis zero point
(offset axis zero point).
3. Set at axis zero point:
Current position = 0 Offset project zero point (i.e. −PZ).