SolarCity H6 - Rapid Shutdown (RSD); Dark-Start Feature

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H6 Hybrid Inverter - Installation & Operation Guide

• The H6 inverter is factory configured with AC Grid charging disabled. It can only charge

from PV.

• The Grid charging setting is password-protected and cannot be modified by the end user.

• You can verify that the inverter has not grid charged by viewing the LCD display and

looking at the grid charging register.

5.9.4 - Rapid Shutdown (RSD)

The wiring box includes a Rapid Shutdown Master (Power Line Communication or PLC

Transmitter) that sends a simultaneous wireless PLC signal to the RSD boxes connected to all

of the strings in the PV array via the high-voltage DC lines connected to the PV+ and PV-

connections. The Rapid Shutdown Slaves (communication receivers) that receive these

wireless PLC signals are embedded in the RSD boxes on the roof. This RSD signal initiates a

rapid shutdown when triggered by the Fireman Switch located either beside the main panel

or by the DC Disconnect Switch. See

Figure 3-14

and

Figure 3-15

for mounting and operation,

respectively. See also

“PV Interface” on page 28

When the Fireman Switch is pressed or the DC Disconnect Switch is set to OFF, the DC

feeders between the SMART RSD device and the SolarCity H6 inverter becomes de-energized

below 30V, 8A, 240VA within less than ten (10) seconds. The SolarCity H6 inverter will not

export AC power to the grid or to protected home loads and also disables the battery pack at

the same time. Please see

“Fireman Switch and Rapid Shutdown” on page 42

for detailed

operation information.

5.9.5 - Dark-Start Feature

When there is no PV energy, no AC grid, and if the inverter and battery disconnects are in the

OFF positions, then you can restart the system by turning the inverter and battery pack

disconnects to the ON position, waiting for one (1) minute, and then pressing and holding

both the [UP] and [DOWN] buttons simultaneously for five (5) seconds. This operation causes

the SolarCity H6 inverter to send an ENABLE signal to the Battery Pack and come online

within eight (8) seconds. The system can turn on automatically if there is AC grid or PV

energy, or if the inverter and battery disconnects are in the ON position.