Siemens SINAMICS S110 - Page 486

Safety Integrated Functions
8.9 Acceptance test and acceptance report
Function Manual
484 Function Manual, 01/2011, 6SL3097-4AB10-0BP3
Example Trace SS1 with encoder
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Figure 8-39 Example Trace SS1 with encoder
Trace evaluation:
● SS1 function is selected (time axis 0 ms; see bit "deselection SS1")
● Response bit "SS1 active" is set (time axis approx 20 ms)
● The drive decelerates along the configured OFF3 ramp (p1135)
● Recording of Drive_1.r9714[0] shows whether the OFF3 ramp is active
● The STO is activated (time axis approx. 370 ms; see bit "STO active"); at this point the
speed falls below the shutdown speed SS1 (p9560/p9360) (drops below the shutdown
speed SS1 before SS1 timer p9556/p9356 has expired)
● A fault is generated if the envelope curve of function SAM (Drive_1.r9714[1]) is exceeded
by the actual speed (Drive_1.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.