Install Manual
Commissioning and Setup
Installation Manual for Generac PWRCell Inverter 21
Section 6: Commissioning and Setup
System Configuration
The Generac PWRcell system is a flexible, highly 
customizable system that can be configured in a number 
of ways to meet customer need. Correct system 
configuration requires selecting the right equipment and 
the correct operational mode for the system. See the 
Generac PWRcell Inverter Owner’s Manual for
information on operational modes and other user-
configurable settings.
Enabling Islanding
Systems with the Generac PWRcell Battery must have 
the EnaIslanding setpoint set to ON to island. This set-
point is accessible through the Mod. Settings menu via 
the inverter device page. See the Generac PWRcell 
Inverter Owner’s Manual for information on accessing 
and adjusting the EnaIslanding setpoint.
General Information
All REbus devices are configured and controlled through 
the Generac PWRcell Inverter. Connected devices will 
appear on the LCD display. 
Commissioning the System
NOTE: See the Generac PWRcell Commissioning Quick 
Start Guide for more information.
Commissioning consists of five steps:
1. Inverter Power-up
2. Selecting an Operational Mode
3. Configuring Custom Grid Settings (optional)
4. Enabling REbus Devices
5. Enabling Generac Beacon
Before powering up the system for the first time:
• Verify AC voltage is within the specified range for 
system configuration. 
– 240 V split-phase 
– 208 V 3-phase
• Verify all wiring terminations are tight and secure.
• Verify DC wiring field terminations are secure and 
polarity is correct.
• Verify DC breakers for all connected devices are 
turned ON.
Inverter Power-up
Turn ON the main AC breaker to power-up the inverter. 
See  Figure 6-1. On power-up, the home screen will 
appear on the control panel LCD with the operational 
mode listed at the top of the home screen.
010006
Figure 6-1. Inverter Power-Up
NOTE: If there is no grid power at the site and the sys-
tem includes Generac PWRcell Battery, blackstart can be 
used to start the system from the battery. See the Gen-
erac PWRcell Owner’s manual for information on black-
starting a system.
Selecting an Operational Mode
NOTE:  See the Generac PWRcell Inverter Owner’s 
Manual for more information on operational mode 
options. 
To select an operational mode:
1. See  Figure 6-2. While viewing the home screen 
press the center button.
009965
Figure 6-2. Selecting Operational Modes (1 of 4)










