User Manual

Page 80
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSB 9000 2.5 kW Series
Step 4: Global limits
Thiscongurationscreenallowstolimitvoltageandpowerglobally
for the simulation. The current, in this table based simulation, is taken
from the calculated PV table which also is an IU table.
Theoutputvoltageofthepowersupplyisalreadydenedbysetting
up U
OC
in step 2, so it’s recommended to adjust value U to same
or higher, else the PV curve may not be working as expected. The
power shouldn’t be limited at all.
Recommendation: leave both values untouched
Thecongurationwillbenishedandthesettingssubmittedwithbutton . The function generator would then
switch to control mode.
3.11.15.9 Controlling the simulation
AfterloadingtheconguredparameterstheFGwillswitchtocontrol
mode.Nowthesimulationcanbestartedwitheitherthe“On/O󰀨”
button or touch area .
Accordingtotheconguredsimulationmode,theorange-browndis-
play area would show the adjustable simulation parameters, which
couldonlybemodiedviadirectinput,notbytherotaryknobs,be-
cause with every step of the knob the curve would be re-calculated.
The screen example on the right shows simulation mode E/T.
Incaseanyofthedaytrendmodeswouldhavebeencongures,
the display area would be empty. These modes run automatically
once started and will stop when the total time of all points’ dwell time
is reached. The other modes, E/T and U/I, would only stop by user
interaction or due to a device alarm.
3.11.15.10 Stop criteria
The simulation run could unintentionally stop due to several reasons:
1.Adevicealarmoccurred,whichwouldswitcho󰀨theDCoutput(PF,OVP,OCP,OPP)
2.Anusereventoccurredwhoseactionhasbeendenedtocauseanalarm,whichmeanstoswitcho󰀨DC
3.Daytrendmodehasnished
Situation 2 can be avoided by carefully setting up other parameters, unrelated to the function generator. With the
simulation stop in all three situation the data recording would also stop.
3.11.15.11 Test analysis
After simulation stop by whatever reason recorded data can be saved to USB stick or read via digital interface, of
courseonlyofdatarecordinghasbeenactivatedintheconguration.Activatingthedatarecordingfeatureduring
the simulation run isn’t possible when manually controlling the FG, but in remote control. When saving to USB
stick, it would always save all data recorded until the current index counter. Via digital interface there is the option
read any portion of the data, which will also have an impact on the time required to read the data.
The data can later be used to visualise, analyse and determine characteristics of the simulated solar panel and
also of the solar inverter which is usually used as load when running such tests. More details can be found in the
standard paper.
3.11.15.12 Reading the PV curve
The last PV curve (or table) which has been calculated during the simulation run can later be read from the device
via digital interface (partly or completely) or stored to USB stick. This can serve to verify the adjusted parameters.
When running mode DAY E/T or DAY U/I this makes less sense, because there the curve would re-calculated with
every processed index and the read curve would always be the one belonging to the last day trend curve point.
When reading the PV table, you will receive up to 4096 current values. The table data could be visualised in an
XY diagram in tools like Excel.