Siemens SINAMICS S110 - Page 518

Safety Integrated Functions
8.9 Acceptance test and acceptance report
Function Manual
516 Function Manual, 01/2011, 6SL3097-4AB10-0BP3
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Figure 8-49 Example trace SLS without encoder with STOP A
Trace evaluation:
● SLS function with SLS level 1 is active (see bits "deselection SLS", "selection SLS bit 0",
"selection SLS bit 1" and "SLS active", "active SLS level bit 0" and "active SLS level
bit 1")
● Drive is accelerated beyond the SLS limit (time axis from approx. -800 ms)
● Exceeding of the limit is recognized (time axis 0 ms)
● Safety fault is initiated (time axis 0 ms; bit "internal event" is set to 0)
● Fault response STOP A is initiated (time axis 0 ms; see bit "STOP A or B active" and
"STO active")
● Drive coasts (see red curve of r9714[0])
Note
Small time differences (of the order of 2 to 3 Safety clock cycles (here up to 36 ms)) are
caused by internal calculations and do not present a problem.