Huawei SUN2000-20KTL-M3 - Page 83

Parameter Description
Communication
disconnection
fail-safe
In the inverter export limitation scenario, if this
parameter is set to Enable, the inverter will derate
according to the active power derating percentage when
the communication between the inverter and the Smart
Dongle is disconnected for a period longer than
Communication disconnection detection time.
Communication
disconnection
detection time
Species the fail-safe detection time in case of
disconnection between the inverter and the Smart
Dongle.
This parameter is displayed when Communication
disconnection fail-safe is set to Enable.
Grid
connecti
on with
limited
power
(kW)
Closed-loop
controller
● If multiple inverters are cascaded, set this parameter
to SDongle/SmartLogger.
● If there is only one inverter, set this parameter to
Inverter.
Limitation mode ● Total power indicates export limitation of the total
power at the grid-tied point. (When a single-phase
power meter is connected, only Total power can be
selected. When a three-phase meter is connected in
three-phase three-wire mode, only Total power can
be selected.)
● Single-phase power indicates export limitation of
the power in each phase at the grid-tied point.
Single-phase power can be selected only if a three-
phase meter is connected in three-phase four-wire
mode.
Maximum grid
feed-in power
Species the maximum active power transmitted from
the grid-tied point to the power grid.
Power
adjustment
period
Species the shortest interval for a single export
limitation adjustment.
Power control
hysteresis
Species the deadband for adjusting the inverter output
power. If the power uctuates within the power control
hysteresis, the power is not adjusted.
Active power
output limit for
fail-safe
Species the derating value of the inverter active power
by percentage. If the Smart Dongle does not detect any
power meter data or the communication between the
Smart Dongle and the inverter is disconnected, the
Smart Dongle delivers the derating value of the inverter
active power by percentage.
SUN2000-(20KTL, 29.9KTL, 30KTL, 36KTL, 40KTL)-
M3
User Manual 7 Human-Machine Interaction
Issue 18 (2024-03-10) Copyright © Huawei Technologies Co., Ltd. 73