Siemens SINAMICS DCM Manual page 607

Descriptions of functions
10.33 Diagnostics
Figure 10-97 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.
Properties
● 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
608
Operating Instructions, 02.2015, A5E34763375/RS-AA/001
ac.maher.co.ir
SINAMICS DCM DC Converter