The test works by activating the input one by one. The test takes 1-2 minutes and the inverter
continues to produce energy meanwhile. In menu B the result of the test can be read in the display
menu called PV configuration.
Upon test completion the display will automatically show the PV configuration detected; however,
only if the buttons on the display have not been used in the past 3 minutes.
For ULX
5400i, 2 out of 3 DC modules must be powered for the test to run. If not enough PV
power is available to power 2 modules, the test is postponed until sufficient PV power is available
for the second DC module to run.
DC2
+
DC1
DC1
On Grid
Test end
Illustration 2.1: PV configuration test
PV configuration
INDIVIDUAL
Illustration 2.2: PV Configuration
The status field may show the following:
Display Text
Description
IDLE
PV configuration test has not yet been run. Shown before the inverter con-
nects to grid.
OFF
PV configuration test is disabled. Applicable to ULX 1800i
where the test is otherwise disabled.
WAITING
The PV configuration test is ready to run, but only solar radiation for one PV
input is available. (Applicable to ULX 5400i , the inverter can only determine
the configuration of all three modules, when two are running)
PV-AUTODE-
The PV configuration test is running. No result yet.
TECTING
INDIVIDUAL
The PV modules are connected in individual string configuration
PARALLEL 1-2*
The PV configuration has ended, concluding that inputs 1 and 2 are connected
in parallel string configuration.
PARALLEL 1-3*
The PV configuration has ended, concluding that inputs 1 and 3 are connected
in parallel string configuration.
PARALLEL 2-3*
The PV configuration has ended, concluding that inputs 2 and 3 are connected
in parallel string configuration.
PARALLEL 1-2-3
The PV configuration has ended, concluding that inputs 1, 2 and 3 are con-
nected in parallel string configuration.
Table 2.1: PV Configuration Test Status Field Text
*) The "PARALLEL 1-2" is only allowed for the ULX 3600i inverter. The "PARALLEL 1-2", "PAR-
ALLEL 1-3", and "PARALLEL 2-3" is not allowed for the ULX 5400i inverter.
The display readout shows the status of the
test. The first line shows that this concerns the
DC3
PV configuration and the second line shows
+
which status the test is in or which configura-
DC2
tion it has detected.
+
DC1
t
2. Function Description
and to inverters
5
2