6. Function Instructions
6.1 Working Mode
The working modes of an INVOLAR Micro-Inverter are:
Startup
Active
Fault
Standby
The detailed working mode descriptions are as below:
Startup
Startup mode is for a newly installed INVOLAR Micro-Inverter. This startup mode
must base on the proper AC and DC cables connecting and whole PV system
grounding.
Active
When the Micro-Inverter is in normal operation process, this insures that the power
available from each PV module is exported to the utility grid.
Fault
If the PV system does not operate correctly, INVOLAR Micro-Inverter would stop
automatically and enter into Disable mode. The INVOLAR Micro-Inverter system
keeps detecting the disable information. The INVOLAR Micro-Inverter is in disable
mode until fault release. If the inoperative Micro-Inverter has been repaired and
match to the electrical utility grid, the whole INVOLAR Micro-Inverter system would
enter operation mode after 20 seconds to 5 minutes. Be aware that only qualified
personnel should maintain the INOVLAR Micro-Inverters.
Standby
When the Micro-Inverter is in operation process but keeps with low voltage and
current in AC side for a certain time. The Micro-Inverter manages transition from
“Active” to “Standby”. In “standby” mode, Micro- Inverters keep detecting the energy
output of PV Modules. When the output energy reaches the power generation
conditions, the inverter would enter into “Active” from the “Standby” state.
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