Huawei SUN2000-55KTL Series User Manual page 65

SUN2000-(55KTL, 60KTL) Series
User Manual
Figure 6-1 DC terminals
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Table 6-1
Table 6-1 LED indicator and buzzer status description
PV Connection Indicator
Status
Blinking red
Blinking green
Steady red
Automatic Detection
Following are the rules for starting automatic detection:
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Issue 06 (2020-01-03)
Only after at least one PV string correctly connects to the MPPT1 circuit, the SUN2000
enables the DC input detection function. Therefore, you are required to connect DC input
power cables to the MPPT1 circuit first.
The DC input detection function allows only independent access from each PV string to
the inverter. That means, the PV strings cannot be connected in parallel and then to the
inverter.
describes the status of the LED indicators and buzzers.
Initial automatic detection is triggered 2 minutes after at least one PV string correctly
connects to the MPPT1 circuit.
Within three days after initial automatic detection is triggered, the SUN2000 performs
automatic detection once every 10 minutes. From the fourth day, the SUN2000 performs
automatic detection only when the PV string voltage equals the lowest operating voltage
of the SUN2000.
The DC input detection only functions when the two DC switches on the SUN2000 are
OFF.
Copyright © Huawei Technologies Co., Ltd.
Buzzer Status
No sound
No sound
Buzzing
6 System Commissioning
Meaning
DC input detection is in
progress.
The DC input is normal.
The DC input is abnormal.
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