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Wiring the Inverter
3–12
975-0253-01-01
Table 3-2 provides information on maximum Xanbus network length.
Network Components
Terminators
Network terminators (Figure 3-9) are required at both ends of the network to
ensure the communication signal quality on the network. Network terminators are
inserted into a GT Inverter RJ45 (Xanbus) port. The GT Inverter comes with one
network terminator pre-installed.
GT Inverter Xanbus
ports
Two RJ45 ports are provided on the GT Inverter for making network connections.
See Figure 3-10 for the location of these ports.
RJ-11 ports
The RJ-11 ports allow interconnection of multiple inverters for 3-phase
configurations where the requirement is to avoid high unbalanced generating
conditions on the transformer. Any inverter disconnecting from the grid also
Table 3-2
Total Xanbus Network Length
Xanbus Baud Rate
Total Xanbus Network Length
250 kbps
40 m (130 ft )
125 kbps
300 m (1000 ft)
Important:
Xanbus baud rate is set to 125 kbps by default. If you want to switch to 250
kbps, make sure to follow the recommended procedure supplied by Xantrex. See the
Application Note, “Xantrex Grid Tie Solar Inverter Baud Rate Change Procedure”
(976-0216-01-01 available on www.xantrex.com).
Important:
Remote upgrade using the Gateway is not supported on systems with a 125
kbps baud rate. You will have to upgrade each inverter in the system using an RS-232
cable and a laptop.
CAUTION: Unpredictable network operation
Do not exceed the maximum total Xanbus network length shown in Table 3-2, “Total
Xanbus Network Length” on page 3–12. Proper network operation cannot be guaranteed
when these distances are exceeded.
Important:
When creating long Xanbus networks (i.e. greater than 100 m), you must
verify network integrity using a CANbus network analysis tool such as the Maretron
N2KMeter Diagnostic Tool for NMEA2000 compatible networks. See “Verifying the
Xanbus Network” on page 3–15.
Figure 3-9
Network Terminator
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Summary of Contents for GT 2.5-DE, GT 3.8-DE, GT 2.8-S
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