Siemens Sinamics S120 Function Manual page 469

Ex ample trace: SDI positive (with encoder) with STOP E
①
Drive_1.r9713[0]: SI motion diagnostics position actual value load side, load-side actual value on the Control Unit
②
Deselect SDI positive
③
SDI positive active
④
Internal event
⑤
SOS active
⑥
SS1 active
⑦
STOP E active
⑧
Enable pulses
Image A-15 Example trace: SDI positive (with encoder) with STOP E
Trace evaluation:
● Function SDI positive is activated (see bit "SDI positive active")
● The drive starts moving (time axis approx. -300 ms)
● Exiting the SDI tolerance window is detected (time axis 0 ms)
● Safety messages are initiated (time axis 0 ms; bit "internal event" is set to 0)
● Fault response STOP E (corresponds to selecting SOS) is initiated (time axis 0 ms; see
bit "STOP E active")
● The standstill position is only safely monitored (time axis 500 ms; see bit "SOS active")
after the transition time STOP E to SOS (p9554) has expired
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
A.3 Acceptance tests (recommendations)
Appendix
469