BECKHOFF AX5805 Installation - Manual (Page 41)

Product description
AX5805 39
3.6.4.3 Initiation of the reference position
As long as the referencing input has not been detected, the safe position functions of the AX5805 are
deactivated, i.e. its current position output remains at 0. The referencing status can be monitored via the
CoE parameter 0x2015. The axis is referenced when the current position corresponds to the parameterized
position and simultaneously, the Reference Cam is passed completely in positive or negative direction.
The Reference position is re-verified every time the axis crosses the Reference Position window. If the
Reference Cam Input is encountered outside the reference position window, or if the Reference Cam input is
not encounter when crossing the reference position window, the AX5805 recognizes that the reference cam
is not in the correct location or the controller position system (NC Position) is invalid. Then, the AX5805
activates STO and removes torque from the motor.
Figure 23: Structure image for the reference position
Note
Initiation of the reference position
During referencing the reference cam should be passed over with very slow speed. This
assures an accurate detection of the cam edges by the AX5805.