VCS II User Guide – Bergey WindPower Co.
Rev: 0
June 17, 2016
8
There is a fault log stored on the SD card for all faults encountered- fltsxxxx.csv. The highest number
xxxx is the latest fault log. Basic data surrounding the fault are stored. Additionally there is high
resolution scope data files created during each fault. To avoid filling the SD card with too much data
there are only 10 detailed fault scope files stored. The files are overwritten in numerical order. To find
the last fault log file look in column Z for the scope file index (shown in yellow below).
Then find the scope_xx.csv that corresponds to that fault, in this case scope_03.csv. Keep in mind that
only scope logs for the last 10 faults are stored.
The scope fault logs show 16 channels of data surrounding the faults, with a 52 µs resolution. There are
2000 samples saved in each scope file. The channels which will be saved are selected from several
groups of data, which data group is saved is set in the last line in sysparam.txt (see below)
Sysparam.txt contains most of the tuning calibrations; do not change any values except History Logging
Interval or Data Capture Group. The history files are long term performance type data that are saved to
the SD Card. They are saved at 10 minute increments by default (not the 10 seconds shown below). The
Data Capture Group can be changed to help with fault diagnosis in case there are faults that require
different high resolution data to diagnose.
