Generac Power Systems PWRcell X11400 Series, Owner'S Manual

8

Owner’s Manual for Generac PWRcell Inverter

General Information

Operational Modes Overview

Generac  PWRcell  offers  several  operational  modes  for 
various  installation  configurations,  markets,  and 
applications. Connected REbus devices work together to 
manage the distribution of power based on the selected 
operational mode. 

Some modes interact with Generac PWRcell Batteries to 
store power and/or balance production and consumption. 
See 

Table

2-1

 and 

Table

2-2

 for an overview of available 

operational modes.

Table 2-1. Operational Inverter Modes

Priority

Grid Tie

Clean Backup

Priority Backup

Self Supply

   1

Support local loads

Charge batteries from bus

Charge batteries from bus

Support local loads

   2

Export to grid

Support local loads

Charge batteries from grid

Charge batteries from bus

   3

-

Export to grid

Support local loads

Export to grid

   4

-

-

Export to grid

-

Table 2-2. Optimal Mode for Goal

Goal

Optimal Inverter Mode

Keep batteries charged as much as possible

Priority Backup

Keep batteries charged using only solar power

Clean Backup

Net-metering solar energy without a battery

Grid Tie

Use grid as little as possible

Self Supply

Never sell power to grid

Zero Export

Grid Tie

In  Grid  Tie  mode,  the  Generac  PWRcell  Inverter
functions as a conventional grid-tied inverter system. The 
system powers local loads and when generation exceeds 
load demand, excess power is exported to the utility for 
net metering and other credits.

NOTE: 

Grid Tie is intended for use with systems that do 

not  include  a  Generac  PWRcell  Battery.  For  systems 
where a Generac PWRcell Battery will be connected at a 
later  date,  operate  in  Grid Tie  mode  until  the  battery  is 
installed.

Clean Backup

NOTE: 

Grid power is not used to charge batteries in this 

mode. 

See 

Figure 2-6

.  In  Clean  Backup  mode,  the  Generac 

PWRcell  Inverter  prioritizes  keeping  the  Generac 
PWRcell Battery charged and ready for a grid interruption 
using solar power only. If the battery is not fully charged, 
the inverter uses all available solar power to charge the 
battery. 
See 

Figure 2-7

. When the battery is fully charged, solar 

power will flow to local loads and the grid.

009956

Figure 2-6. Clean Backup (1 of 3)

009957

Figure 2-7. Clean Backup (2 of 3)