Last
update : 30. July 2011
MVLOG is intended to record data
from the Mastervolt grid tie converter (GTC) Soladin600 and
Windmaster500. The connection to the converter is done via a serial TTL
interface. The logger requests the relevant data of the converter
rotationally and stores these and additional data from other
sensors and inputs / outputs, to a SD Card. The recording process is
transient, i.e. only if the new record has changed over the last, a new
entry is made.
At the same time, the
data via a RS232 or (optionally) via a RS485 (EIA485) interface is
displayed in real time. The format for the SD-card recording , fits to
the CSV viewer by Ingo Wendler 2). This free PC software can
display the recorded SD-Card data on your PC and analyze them. A
record is generated any second.
The format of the
real-time output (via RS232 or RS485) to the program fits REALVIEW of
Abacom 1). This tool is very inexpensive (about 45 €) and can display
the data on-line and analyze them .
In addition, the board
can be put into a so-called transparent mode , which allows
direct access to the grid converter. The original Mastervolt SW (via
RS232 or RS485 for long distances) can then be used to setup or readout
the GTC without changing the interface. The normally required
original COM port converter (Soladin PC-Link) is no longer
needed.
There is a third mode,
the SETUP mode. It makes sure that no access to the
GTC and no records will be performed,
during setup
MVLOG. This mode is typically not needed.
Multiple loggers can be
connected easily and accessed remotely via RS485 interface. Each logger
board is prepared to get a programmable address.
The settings of the
logger itself and the settings of the operation modes, can be done via
RS232 or RS485. There are no set-up and display elements on the logger
board, except a button for SD-Card unmount" and a
multi-color LED for status indication.
The power supply to the
logger board is done via a external current-saving power supply. If
more than one logger are physically placed very close
together, a single power supply for several loggers can be used. Since
the current consumption is very low. The Clock (RTC) and important
settings are powered by a backup battery or are stored in the
processor.
In addition ,
up to 4 external sensors can be connected. There are inputs for
temperature sensors (306/506 TSIC) or pulse type sensors (for wind speed,
Anemometer) .
There are two outputs
available, which can take over any optocoupler switching tasks.
Function TBD.
There are also
two analog inputs available to measure external
voltages . Function TBD.
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