D Rapid Shutdown
If optimizers are congured for all PV modules, the PV system can perform a rapid
shutdown to decrease the output voltage to below 30 V within 30s. The rapid
shutdown function is supported only if optimizers are congured for all PV
modules.
Perform the following steps to trigger a rapid shutdown:
● Method 1 (recommended): Turn o the AC switch between the inverter and
the power grid.
● Method 2: Turn o the DC switch at the bottom of the inverter.
● Method 3: If the DIN5 port (pin 15) of the inverter communications terminal
is connected to a rapid shutdown switch, press the switch to trigger a rapid
shutdown.
Log in to the FusionSolar app as an installer, choose Me > Device commissioning, and
connect to the WLAN hotspot of the inverter. Log in to the local commissioning
system as an installer, choose Settings > Feature parameters > Dry contact function,
and set Dry contact function to DI rapid shutdown.
● Method 4: If AFCI is enabled, the inverter automatically performs arc fault
detection and triggers a rapid shutdown when AFCI lock protection is
implemented.
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual D Rapid Shutdown
Issue 18 (2024-03-10) Copyright © Huawei Technologies Co., Ltd. 115
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