Descriptions of functions
10.34 Diagnostics
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
643
Figure 10-94 Trace function
The device cycle time display flashes 3 times at around 1 Hz when the time slice is changed
from < 4 ms to ≥ 4 ms (see description at "Properties"). The display also flashes in the
inverse direction from ≥ 4 ms to < 4 ms.
● Two independent traces
● Up to eight recording channels for each trace
When more than four channels per single trace are used, the trace's device clock cycle is
switched automatically from 0.250 ms to 4 ms. As a consequence, the performance of the
SINAMICS DCM is not influenced too strongly by the trace function.
● Single trace:
Device clock cycles of the SINAMICS DCM trace
Up to four channels: 0.250 ms
≥ five channels: 4 ms
The specified trace cycles can be increased.
● Endless trace:
The parameter data is written to the memory until this is full.
Further parameter data is 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 DCM trace for an endless trace:
Up to four channels: 2 ms
≥ five channels: 4 ms
● Triggering
– Without triggering (recording immediately after start)
– Triggering on signal with edge or on level
● STARTER commissioning tool
– Automatic or adjustable scaling of the display axes
– Signal measurement via cursor
● Adjustable trace cycle: Integer multiples of the basic sampling time
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