Siemens Sinamics S120 Function Manual page 463

Ex ample, SDI positive trace (with encoder) with STOP C
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
STOP C active
⑥
SOS active
Image A-13 Example trace: SDI positive (with encoder) with STOP C
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)
● Error response STOP C is triggered (time axis 0 ms; see bit "STOP C active")
● The drive is braked to a standstill
● After the SS2 timer has expired, the subsequent SOS function is activated (time axis 400
ms)
● The "SOS active" bit is set
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
A.3 Acceptance tests (recommendations)
Appendix
463