Commissioning Multiple Inverter Systems - Generac Power Systems PWRcell X7602 Installation Manual

2. Navigate the inverter control panel until a screen
similar to 6-26. When properly installed, the
Figure
inverter control panel will have an additional device
page called Ethernet Settings.
MAC:00:04:a3:0b:77:fc
IP: 192.168.158.37
DHCP: bound, 83285s
ARP: idle
DNS: done
ctr btn:
Figure 6-26. Ethernet Troubleshooting
NOTE: Ensure blue Cat 5 cable is reconnected to the
Beacon after troubleshooting is complete.
If the PWRview State reads Get Connected then a suc-
cessful connection has not been made to the PWRview
server.
If the inverter does not automatically connect to the
network and begin communicating with the PWRview
server, perform the following steps:
1. Verify an Ethernet connection has been enabled by
pressing the center button on the Ethernet page
and selecting Enable Ethernet.
2. Verify the network is configured for DHCP and that
DHCP is enabled.
3. If the network is not configured for DHCP, obtain
the MAC address and contact the system
administrator for IP address assignment.
4. Input IP address under Manual settings. See
Configuring Static IP
5. Restart router and modem.
6. Contact system administrator for further
troubleshooting steps.
NOTE: It is the installer's responsibility to make sure the
Internet connection is reliable and secure. Generac
recommends always using a hardwired connection.
Generac does not recommend or support using any
wireless or power line carrier network devices. Use these
devices at your own discretion.
Commissioning Multiple Inverter
Systems
PLM Cross-talk
NOTE: Do not energize two or more inverters before
commissioning. Energizing two or more inverters prior to
commissioning will result in cross-talk.
Installation Manual for Generac PWRCell Inverter
net settings
009981
Settings.
PWRcell inverters are manufactured with some common
default parameters. One of these default parameters is
the default Power Line Modem (PLM) channel. PWRcell
inverters use the PLM channel to communicate with and
send commands to REbus-powered devices. In this way,
a PWRcell inverter behaves like a master device. If two
or more master devices are communicating on the same
PLM channel, REbus devices become unable to respond
properly to the intended master device and the master
devices will attempt to provide control for the other, often
leading to communication and reporting issues. This is
referred to as cross-talk.
How to identify PLM Cross-talk
Cross-talk can be easily identified by navigating to the
device pages on an inverter control panel. If two inverter
device pages exist, or if devices connected to one
inverter show up on the other, cross-talk has occurred.
NOTE: To differentiate one device page from another,
confirm the RCP numbers via the device page sub-menu.
NOTE: It is recommended to keep a list of which REbus
devices are connected to specific inverters at multi-sys-
tem sites.
Multiple Inverter System Pre-Commissioning
Checklist
Before commissioning multiple inverter systems, confirm
the following:
•
Inverter systems (including PV Links and PWRcell
batteries) have been installed per manufacturer
instructions and to local and state code require-
ments.
•
PWRcell batteries have their Battery Disconnect
switches in the OFF position.
•
PWRcell inverters are de-energized with no volt-
age present at their AC Grid input terminals. Use
an appropriately rated multi-meter/voltmeter to ver-
ify if AC voltage is present at the AC Grid terminals.
NOTE: To determine if the inverter is de-energized,
check the inverter control panel and the system backfeed
breaker. If de-energized, the inverter control panel will be
powered off and the inverter backfeed breaker will be
OPEN.
Multiple Inverter System Commissioning
Procedure
NOTE: Throughout this process, it is important that only
one inverter is energized at any time. If two or more
inverters are energized at any point during this process,
the inverters will cross-talk. To resolve cross-talk, see
PLM Cross-talk Recovery
cross-talk, the commissioning process will need to be
restarted for the cross-talked inverters.
Commissioning and Setup
Procedure. After resolving
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