Thyristor Diagnostics - Siemens SINAMICS Series Operating Instructions Manual

10.34.2 Trend recorder function
The SINAMICS DC MASTER enables data from 4 channels to be recorded over an
extended period, with a large memory depth. A file on the CompactFlash Card takes on the
role of a long-term storage facility. The signals to be recorded are updated periodically and
written cyclically to the file.
The file contains a line-by-line account of the operating hour and values for the 4 channels,
in the form of an ASCII string, and can be evaluated and visualized using standard PC tools
(such as Notepad or Excel).
Recording must be started manually (by setting p51705 = 0/1/2). With a recording period of 1
second, the file grows by approximately 100 kB per hour.
When starting via p51705 = 1, recording is automatically stopped after the number of entries
set in p51706 – and p51705 is set to 0.
When starting via p51705 = 2, the oldest entries are overwritten after the number of entries
set in p51706. Recording must be stopped manually (with p51705 = 0).
The file is called Track.csv and can be found in the \USER\SINAMICS\DATA\LOG directory
on the CompactFlash Card.
For more details on the trend recorder function, please refer to function diagram FP8050.
10.34.3

Thyristor diagnostics

SINAMICS DCM can perform a self-test of its own power unit. As a consequence, defective
thyristors and other faults can be detected in the power unit.
Note 1
Thyristor diagnostics cannot be used when SINAMICS DCMs are connected in series.
Note 2
In parallel connections of SINAMICS DCMs (6-pulse or 12-pulse), the thyristor diagnostics
must only be selected on the master. The thyristor diagnostics are then performed first on
the master and then automatically in succession on all slaves. If a faulty thyristor is detected
on a SINAMICS DCM, the appropriate fault message is issued on this SINAMICS DCM and
not on the master on which the thyristor diagnostics was started.
Note 3
If a thyristor is fused, in 6-pulse parallel connection it is not possible to identify in which of the
parallel devices the defective thyristor is located. The corresponding fault message occurs
on the master.
SINAMICS DCM DC Converter
Operating Instructions, 12/2018, A5E34763375A
Descriptions of functions
10.34 Diagnostics
633