Siemens Sinamics S110 Function Manual page 403

Priorities of stop responses and Extended Functions
Table 8- 13 Priorities of stop responses and Extended Functions
Stop response /
Extended Function
Highest STO
priority
..... SS1
... SS2
.. SOS
Lowest SLS
priority
1) The SOS monitoring function remains active, although the fault response in the event of a fault can no longer be
triggered because it is already present.
2) STOP B is the subsequent stop of STOP F, which is activated after a parameterizable time. STOP F alone does not
have any effect; the active safety function is still present.
3) The SLS monitoring function remains active, although the fault response in the event of a fault can no longer be
triggered because it is already present.
4) SLS remains active during the braking phase, after which the system switches to SOS.
The table above specifies which stop response / safety function is set when a STOP is
triggered with a safety function active. The STOPs are arranged here from left to right in
descending order of priority (STOP A-D, F).
No overall priority is assigned in the individual safety functions. SOS remains active, for
example, even if STO is requested. The safety functions that cause the drive to decelerate
(STO, SS1, SS2) are specified from top to bottom in descending order of priority.
If a field contains two entries, the stop responses and safety functions have the same
priority. Explanation:
● STOP A corresponds to STO
● STOP B corresponds to SS1
● STOP C corresponds to SS2
● When the SS2 function is active, STOP F results in follow-up stop B. SS2 remains active.
Function Manual
Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Highest ...
priority
STOP A STOP B
STOP A / STO STO
STOP A STOP B / SS1 SS1
STOP A STOP B
STOP A STOP B
1)
STOP A STOP B
3)
...
STOP C
STO
STOP C / SS2 SS2
SOS
1)
STOP C
3) 4)
Safety Integrated Functions
8.5 Safety Integrated Extended Functions
... ...
STOP D STOP E
STO STO
SS1 SS1
SS2
SOS SOS
STOP D STOP E
4)
Lowest
priority
STOP F
STO
SS1
SS2 / STOP
B
2)
STOP B
2)
STOP B
2)
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