Technical data

Safety Integrated Functions
8.5 Safety Integrated Extended Functions
Function Manual
376 Function Manual, 06/2012, 6SL3097-4AB10-0BP4
● After SOS has been selected and after the delay time set in p9351/p9551 has expired.
The drive must be braked to standstill within this delay time (e.g. by the controller).
● As a consequence of SS2
● As a consequence of STOP C (corresponds to selection SS2)
● As a consequence of STOP D (corresponds to selection SOS)
● As a consequence of STOP E
When this function is activated, the current actual position is saved as a comparative
position, until SOS is deselected again. Any delay time is cleared after SOS is deselected
and the drive can be immediately moved.
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Figure 8-6 Standstill tolerance
Note
The "Safe Operating Stop" (SOS) safety function can only be used with an encoder.
Functional features of "Safe Operating Stop"
● The drive remains in the closed-loop control mode.
● A programmable standstill tolerance window is available.
● STOP B is the stop response after the standstill tolerance window has been violated
Note
The size of the tolerance window should be slightly above the standard standstill
monitoring limit, otherwise the standard monitoring functions will no longer be effective.
Parameter r9731 displays the safe position accuracy (load side) that can be achieved as
a maximum, based on the acquisition of the actual value for the safe motion monitoring
functions.