Operation of the Software PVPM.disp
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value for correct operation. To make the selection of a sensor simple during measurement you can define a
table with up to ten different sensors, its names and calibration values, which will be stored in the PVPMs
permanent memory. So later on you just have to select the appropriate sensor at the PVPM. The name you give
the sensor is more or less free selectable, but it should be short and informative. It will be displayed later on the
PVPMs display and informs you about the actually selected sensor. You can select the sensor at the PVPM via
the menu “Service” and “Select sensor”.
If you want to modify the sensors database the PVPM must be connected and ready for data transfer. When you
start this function the database is loaded from PVPM and will be stored back to PVPM when you close this form.
To enter a new value just select a free line in the list and enter the values in the edit fields below the table.
After finishing all entries, press OK. Now you will be asked whether the data should be transferred to PVPM. You
should select “Yes” here or your changes will be discarded.
11.3.5 Calculate internal series resistor
Basing on the nominal values of short circuit current, open
circuit voltage, and the I and V value of the MPP the PVPM can
calculate the effective solar cell curve and with this the
expected internal series resistance R
s
. This theoretical value
can be compared to the actually measured value and give a
hint, whether there are problems for example in the cabling.
11.3.6 Continuous measurement
This function allows the automatically timed measurement
controlled from the PC.
Set the desired time interval and the time unit (seconds,
minutes, hours) for the execution of the measurement and
the number of repetitions (0, if measurements shell be
repeated infinite).
After pushing the button “Start measurement” the
measurement runs automatically and can be canceled by
the “Stop” button. The measured data will automatically
stored to files in the predefined directory. The file names
contain the date and time of the measurement.
The automatic measurement will stop, when the given
number of repetitions are finished or when the PVPM does
not answer or the user cancels the measurements.
11.3.7 Settings
All changes made here will be saved automatically and are valid until
the next change:
PVPM 1000X / 1040X
User Manual
PV-Engineering GmbH
