BECKHOFF AX5805 Installation - Manual (Page 75)

Product description
AX5805 73
3.6.5.12 Description of the SLI safety function
Figure 35: Description of the Safely Limited Increment function (SLI)
When the SLI (Safe Limited Increment) function is activated, the current position is captured under s_cp, and
monitoring of the position is activated. The axis may not leave the window defined between s_cp + s_UL_SLI
(UL-upper limit) and s_cp - s_LL_SLI (LL-lower limit). If one of the limits is exceeded, the Error Reaction
Function SS1 or STO (as defined by ErrorReaction_SLI) is executed.
Note
Difference between firmware 04 and 05
The value s_LL_SLI has to be entered as a positive value up to firmware version 04.
Beginning from firmware version 05 it has to be entered as a negative value.
SLI
1
t
Position
Torque
on Motor
On
SLI State
1
t
t
t
s_cp1
s_cp1+sUL_SLI
s_cp1-sLL_SLI
s_cp2
s_cp2-sLL_SLI
s_cp2+sUL_SLI