Siemens Sinamics S120 Function Manual page 101

Changeover of SLS limit v alues
The changeover is executed binary-coded via 2 F-DIs or 2 PROFIsafe control bits. The
speed selection status can be checked using parameters r9720.9/r9720.10. Parameters
r9722.9 and r9722.10 indicate the actual speed limit, bit r9722.4 must carry a "1" signal.
Table 4- 2
F-D I for bit 1
(r9720.10)
Danger to life due t o high s peed with defective control of the safely-limited speed limits via
F-DI
For all control options except PROFIsafe, limit SLS1 is activated after 2 unacknowledged
discrepancy errors. This means that, for the 2 F-DIs for selecting the speed levels, the
value 0 is the "safe state" (failsafe value).
• Therefore parametrize the SLS limits in ascending order, i.e. with limit SLS1 as the
Responses
S peed limit value exceeded:
● Configured subsequent stop STOP A/B/C/D/E via p9563
● Safety message C01714
S y stem fault:
● STOP F
● Safety messages C01711
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Changeover of speed limits:
F-D I for bit 0
(r9720.9)
0
0
1
1
WA RNING
lowest speed and limit SLS4 as the highest speed.
Description of Safety Integrated functions
4.2 Safety Integrated Extended Functions
Sp eed limit
0 p9531[0]
1 p9531[1]
0 p9531[2]
1 p9531[3]
SL S level
1
2
3
4
101