System Blackstart - Generac Power Systems PWRcell M3 Owner's Manual

General Information

System Blackstart

By manually enabling the battery using the Battery
Disconnect Switch, it is possible to perform what is called
a Blackstart on the PWRcell system.
IMPORTANT: Performing a Blackstart of the system will
cancel a Shutdown initiated at the inverter and re-
energize REbus DC wiring.
NOTE: Blackstart battery voltage must be 13V or greater
to power the system. See
See Figure 2-8. If LED (B) goes to solid orange after 3
seconds when the Battery Disconnect Switch is turned
ON, the battery is disabled. If the LED goes to green, it is
already enabled and does not require a Blackstart. See
Battery Status LED for more information.
A
Figure 2-8. Blackstart
PWRcell Battery can be disabled if:
•
Disabled by a user from the inverter screen.
•
A Shutdown was initiated at the inverter using the
red Shutdown button.
•
The battery reached a critically low state of charge
and no REbus voltage was present.
•
No grid power
commissioning.
NOTE: To avoid the need for a manual enable, keep the
battery enabled, connected to REbus, and keep Battery
Disconnect ON.
To perform a manual enable
1. Turn Battery Disconnect (A) ON.
2. If the unit is disabled, LED (B) will light orange for 7
seconds.
3. While the LED is still orange, turn Battery
Disconnect OFF.
4. Perform steps 1 – 3 three times in total.
5. Turn Battery Disconnect ON for a fourth time and
leave it ON.
6. The LED will alternate between green and orange
indicating that it is initializing.
If the battery has sufficient charge, LED (B) will light
green (or green strobe) to indicate the battery is enabled.
The inverter screen should illuminate. At this time, it will
be necessary to enable the inverter and other connected
REbus devices.
NOTE: When a Shutdown is initiated on a PWRcell
system in Island mode, all communicating REbus
14
Service for more information.
B
OFF
ON
was available
devices will disable and power off. The Shutdown is not
considered to be actively maintained in this case, and a
manual enable can be used to Blackstart the PWRcell
system and clear the Shutdown state.
NOTE: Local codes adoption may require the installation
of additional DC disconnection means between battery
and inverter which can impact the ability to Blackstart a
system if disconnect means is in OPEN or OFF position.
NOTE: Generac does not currently support autonomous,
off grid installations with PWRcell equipment.
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Owner's Manual for Generac PWRcell Battery