Powering On The System - Huawei SUN2000-175KTL-H0 Quick Manual

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Powering On the System

Before turning on the AC switch between the SUN2000 and the power grid, use a multimeter to
check that the AC voltage is within the specified range.
1. Turn on the AC switch between the SUN2000 and the power grid.
2. Turn on the DC switches at the SUN2000 bottom.
3. Observe the LED indicators to check the SUN2000 operating status.
NOTE
•
Blinking at short intervals (on for 0.2s and then off for 0.2s).
•
Blinking at long intervals (on for 1s and then off for 1s).
Display Category
PV indication
Grid-tied indication
Communications
indication
Indicator Status
LED1 LED4
Steady green -
Blinking
green at Steady
short red
intervals
Off -
LED2 LED4
Steady green -
Blinking
Steady
green at
short
red
intervals
Off -
LED3
Blinking green at short
intervals
Off
Description
NA
At least one PV string is properly connected, and
the DC input voltage of the corresponding MPPT
circuit is higher than or equal to 500 V.
An environmental fault occurs at DC side.
The SUN2000 disconnects from all PV strings, or
the DC input voltage of each MPPT circuit is less
than 500 V.
NA
The SUN2000 has connected to the power grid.
An environmental fault occurs at AC side.
The SUN2000 does not connect to the power grid.
-
The SUN2000 receives data over RS485 or MBUS
communication.
The SUN2000 has not received data over RS485
or MBUS communication for 10 seconds.
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