Siemens SINAMICS S120 Commissioning Manual page 281

Properties
● Two independent traces per Control Unit
● Up to 8 recording channels for each trace
● Single trace:
● Endless trace:
● Triggering
● STARTER commissioning tool
● Adjustable trace cycle: Integer multiples of the basic sampling time
Commissioning Manual
Commissioning Manual, (IH1), 01/2013, 6SL3097-4AF00-0BP3
When more than 4 channels per single trace are used, the trace's device clock cycle is
switched automatically from 0.125 ms (0.250 ms for vector control) to 4 ms. As a
consequence, the performance of the SINAMICS S120 is not influenced too strongly by
the trace function.
Device clock cycles of the SINAMICS S120 trace
Up to 4 channels: 0.125 ms (servo control)/0.250 ms (vector control)
≥ 5 channels: 4 ms (servo control/vector control)
The specified trace cycles can be increased.
The parameter data are written to the memory until it is full. Additional parameter data are
then lost.
A ring buffer can be selected in order to avoid this. When the ring buffer is activated, then
the STARTER commissioning tool automatically starts again from the beginning to write
to the trace memory after the last trace parameter was saved.
Device cycle of the SINAMICS S120 trace for an endless trace:
– Up to 4 channels: 2 ms (servo control/vector control)
– ≥ 5 channels: 4 ms (servo control/vector control)
The specified trace cycles can be increased.
If the 4 ms time slice is not available, then the next higher time slice is selected.
– Without triggering (recording immediately after start)
– Triggering on signal with edge or on level
– Automatic or adjustable scaling of display axes
– Signal measurement via cursor
Diagnostics
3.2 Diagnostics via STARTER
279