KACO XP10U-H4 - Manual (Page 30)

I n s t a l l i n g t h e I n v e r t e r
Page 30 Installation Instructions blueplanet XP10U H4 / H6 and XP10U H4 / H6 PSD
7.6.2 Inverter state diagram
The XP10U inverter performs a series of utility grid, PV array, and internal diagnostics prior to converting DC energy and
exporting to the utility.
Start
Yes
Yes
No
>1.5MΩ
>770 Vdc
Error
DC > start
voltage
AC – UƟlity O.K
Filter voltage
power supply
InsulaƟon test
DC buffer test
1
AC filter = 30%
mains
AC filter = 50%
mains
Filter voltage
ok
AC filter relay
test 1
AC filter = 70%
mains
Filter voltage
ok ok
AC filter = 80%
mains
Filter voltage
not set
AC filter
voltage = 0 Vac
Filter voltage
ok
AC filter relay 2
AC filter relay
test 2
AC filter = 30%
mains
Filter voltage
not set
Line side relay
Filter voltage =
uƟlity voltage
AFI check
AFI ok
Syncronize
Filter voltage =
uƟlity voltage
Relay
DC supply
DC input
recognize: 1
input acƟve
PV < open
circuit voltage -
20 V, or P>
2kW or t> 15s
DC input
recognize: 2
inputs acƟve
Mpp mode or
Constant
voltage
Feed in
Figure 22: inverter state diagram