Description of System Operation

152607 2–3

Figure 2-1Operating States Flow Chart
INITIALIZING
PV contactor opened.
Inverter matrix off.
Grid contactor open.
Green LED on. Red off.
POWER UP
KEY
DISABLE
PV contactor open.
Inverter matrix off.
Grid contactor open.
System State: Key Disable
Inverter State: Standby
PV State: Sleep
SLEEP
for at least 10
seconds
System State: Shutdown
Inverter State: Standby
PV State: Sleep
PV Voltage >
300V
Close K2
PV Voltage <
50V
(
300V
-
250V
margin)
PV Contactor Closed
Inverter matrix off. Line contactor open
PV Contactor Open
WAKE UP
for 5.0 min.
(PV T START)
PV Voltage < 440V (PV V Start)
PV Voltage > 440V
(PV V START)
K1 Settle
for
.5
seconds
ON LINE
PV Power < 1.0kW (PV P STOP)
PV Power > 1.0kW (PV P STOP)
PV Voltage <
300V
(Min. Oper.)
TEST
for 5.0 min.
(PV T STOP)
PV Voltage <
300V
(Min. Oper.)
5 minutes elapsed
System State: Shutdown
Inverter State: Standby
PV State: Wake Up
System State: Shutdown
Inverter State: Main Settling
PV State: Wake Up
System State: Power Tracking
Inverter State: On Line
PV State: On Line
System State: Power Tracking
Inverter State: On Line
PV State: Sleep Test
Grid Contactor K1 Close
Inverter Matrix On
FAULT
PV contactor opened.
Inverter matrix off.
Grid contactor open.
Red LED on. Green off.
Fault from any State Fault Cleared
Retrun to Sleep State
Bold
- constant value
Italic - User settable.
Underline - Default value.
Enable Key

Return to Sleep State