Siemens Sinamics S120 Function Manual page 460

Appendix
A.3 Acceptance tests (recommendations)
Ex ample trace: SDI positive (with encoder) with STOP B
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
SS1 active
⑥
Enable pulses
Image A-12 Example trace: SDI positive (with encoder) with STOP B
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 B is triggered (time axis 0 ms; see bit "SS1 active")
● The drive is braked to a standstill
● Standstill reached (time axis from approx. 250 ms)
● STOP A (as follow-up response to STOP B) is activated; at this point the speed falls
below the shutdown speed SS1 (p9560) (drops below the shutdown speed SS1 before
SS1 timer (p9556) has expired).
460
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
Safety Integrated