Communications Wiring For Monitoring A Single Inverter - Xantrex GT2.5-NA Owner's Manual

Wiring the Inverter

Communications Wiring for Monitoring a Single Inverter

RS-232 cable
requirements
3–18
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You can view GT Inverter operational data on a personal computer using the
Xantrex GT Solar Inverter Viewer ("GT-View"), which you can download free of
charge at www.xantrex.com.
To use GT-View, you must connect your computer's serial port to the GT Inverter
RS-232 port (see Figure 3-10).
To connect your computer to the GT Inverter, you must use a serial DB9 "straight
through" cable.
The RS-232 connector on the GT is configured as follows:
• Pin 2: transmit
• Pin 3: received
• Pin 5: ground.
All other pins are unused.
To connect a single GT Inverter to a personal computer:
WARNING: Shock hazard
Before removing the wiring/disconnect box cover:
• Turn OFF the breaker switches in the main utility service panel.
• Turn the DC/AC Disconnect switch on the GT Inverter to the OFF position.
1. With DC and AC power disconnected from the inverter, remove the
wiring/disconnect box cover.
2. Feed the male end of the serial cable through a side conduit hole on the GT
Inverter.
If the end of the serial cable is too large to fit through the conduit hole, you
may need to use two DB9 to CAT 5 adaptors. Plug the DB9 end of the adapter
into the GT Inverter, and feed the CAT 5 end of the cable out the conduit hole.
Use another adapter to convert the CAT 5 end of the cable back to DB9.
3. Plug the male end of the serial cable into the GT Inverter RS-232 port.
4. Plug the female end of the serial cable into your computer's serial port.
5. Replace the wiring/disconnect box cover.
6. Turn the DC/AC disconnect switch to the ON position and turn the main
utility panel breaker switches ON.
When power is restored to the GT Inverter, you can run GT-View on your
computer to monitor the inverter's operation.
Note:
In multiple installations, GT-View monitors only the inverter to which the
computer is connected. However, if the inverters are connected with a Xanbus cable,
GT-View will display total system wattage and the accumulated daily energy produced
by all inverters. To monitor multiple inverters, you require multiple DB9 cable
connections (one per inverter) to your computer.
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