Operation Mode Definition - Danfoss TripleLynx Manual Del Usario

1. Introduction

1.2. Operation Mode Definition

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Off grid (LEDs off)
When no power has been delivered to the AC grid for more than 10 minutes, the inverter sepa-
rates itself from the grid and shuts down. This is the normal night mode. The user interfaces
(display and RS485 communication) are still powered for communication purposes.
Connecting (Green LED flashing)
The inverter starts up when the PV input voltage reaches 250 V. The inverter performs a series
of internal self-tests, including measurement of the resistance between the PV arrays and earth.
Meanwhile, it also monitors the grid parameters. When the grid parameters have been within the
specifications for the required amount of time (depends on country settings), the inverter starts
to energise the grid.
On grid (Green LED on)
The inverter is connected to the grid and energises the grid. The inverter ceases to energise the
grid if it detects abnormal grid conditions (depends on country settings), in case of an internal
event, or when no PV power is available (no power is supplied to the grid for 10 minutes). It then
goes into connecting mode or off grid mode.
Fail Safe (Red LED flashing)
If the inverter detects an error in its circuits during the self-test (in connecting mode) or during
operation, the inverter goes into fail safe mode. Fail safe mode will remain until AC and PV has
been switched off. This will happen the following night when no PV power is present or if the
inverter is turned off manually. Please refer to the section on
mation.
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Troubleshooting for further infor-
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