20
(1)
ID
(2)
Inverter no.
(3)
Inverter type (DATCOM code)
(4)
Logging interval in seconds
(5)
Energy in watt-seconds with reference to the logging interval
(6)
Averages over the logging interval (AC voltage, DC voltage, DC current)
(7)
Temperature value 1
(8)
Temperature value 2
(9)
Additional information
Data amount and
memory capacity
One USB stick with a memory capacity of 128 MB, for example, can record logging data at
a logging interval of 5 minutes for approx. 7 years.
CSV file
CSV files can store only 65535 rows (data records) (up to Microsoft® Excel version 2007,
afterwards there is no limit).
At a logging interval of 5 minutes, the 65536 rows are written within approx. 7 months (CSV
data size of approx. 8 MB).
To avoid loss of data, the CSV file should be backed up to a PC within these 7 months and
deleted from the USB stick. If the logging interval is set longer, this time frame is extended
accordingly.
FLD file
The FLD file should not be larger than 16 MB. At a logging interval of 5 minutes, this cor-re-
sponds to a storage duration of approx. 6 years.
If the file exceeds this 16 MB limit, it should be backed up to a PC, and all data should be
deleted from the USB stick.
After you have backed up the data and removed it from the USB stick, the stick should be
immediately reinserted so that it can record logging data; no further steps are required.
Buffer memory
If the USB stick is unplugged (e.g. for data backup purposes), the logging data is written to
a buffer memory in the inverter.
As soon as the USB stick is plugged in again, the data is copied automatically from the buff-
er memory to the stick.
(7)
(8)
(9)
NOTE!
A full USB stick can lead to the loss of data or the overwriting of data.
When inserting the USB stick, make sure that it has sufficient memory capacity.
