Siemens Sinamics S120 Function Manual page 501

Ex ample trace: SDI negative (without 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 negative
③
SDI negative active
④
Internal event
⑤
SS1 active
⑥
Enable pulses
Image A-22 Example trace: SDI negative (without encoder) with STOP B
Trace evaluation:
● Function "SDI negative" is activated (see bits "Deselect SDI negative " and "SDI negative
active")
● The drive starts moving (time axis approx. -220 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
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
A.3 Acceptance tests (recommendations)
Appendix
501