Operation

Description of Functions

All items identified as settable or adjustable have set points which can be accessed using the remote system display. (See the system display manual for instructions on locating these set points.) The default settings and ranges of adjustment are listed near the end of this book, beginning on page 47.

Each function is accompanied by a symbol representing the inverter and that function:

TRANSFER

AC IN

DC

AC OUT

These items represent the input from the AC source, the output to the AC loads, DC functions (inverting, charging, etc), and the transfer relay. Arrows on each symbol represent current flow.

The symbols for each function may have other features depending on the function.

Inverting

A GFX inverter uses a transformer and a high-frequency H-Bridge FET design to convert DC voltage from batteries into AC voltage that is usable by AC appliances. It will continue to do this as long as the batteries have sufficient energy. The batteries can be supplied or recharged from other sources, such as solar, wind, or hydroelectric power.

The inverter requires batteries to operate. Other sources may not maintain DC voltages that are consistent enough for the inverter to operate reliably.

CAUTION: Equipment Damage

Do not substitute other DC sources in place of the batteries. High or irregular voltages may damage the inverter. It is normal to use other DC sources in conjunction with the batteries and the inverter, but not in place of the batteries.

Certain features will affect the inverter’s operation. These features only operate when the inverter is generating AC power on its own. They do not function when the inverter is supplied by an AC source.

¾Low Battery Cut-Out (LBCO): This function prevents the inverter from draining the batteries completely. When the DC voltage drops below a specified level for 5 minutes, the inverter will stop functioning. The system display will give a Low Battery Voltage or Low Battery V error. This is one of the Error messages described on page 37. This function is intended to protect both the batteries and the inverter’s output. (Continuing to invert on a low DC voltage may produce a distorted waveform.) This item is adjustable.

¾Low Battery Cut-In (LBCI): The recovery point from Low Battery Cut-Out. When the voltage rises above this point for 10 minutes, the Low Battery error will clear and the inverter will function again. This is adjustable.

∼Connecting an AC source to charge the batteries will also clear a Low Battery error.

¾AC Output Voltage: The inverter’s AC output can be turned up or down by a certain amount to adjust for conditions. This item is adjustable.

¾The inverter is also controlled by a high battery cut-out function. If the DC voltage rises above a certain level, the inverter will immediately stop functioning. The system display will give a High Battery Voltage or High Battery V error. This is one of the Error messages displayed on page 37. (If the voltage drops below this point, the inverter automatically recovers.)

∼For a 12-volt inverter, this voltage is 17 volts.

∼For a 24-volt inverter, the voltage is 34 volts

∼For a 48-volt inverter, the voltage is 68 volts.

The high battery cut-out voltages cannot be changed.

This function is intended to protect the inverter’s output and loads. Continuing to invert on a high DC voltage may produce a distorted waveform. Note that the high battery cut-out does not alleviate the high battery condition itself; it is an external condition.

900-0112-01-00 Rev B

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Outback Power Systems GFX1424E, GFX1312E, GFX1448E manual Description of Functions, Inverting
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GFX1448E, GFX1424E, GFX1312E specifications

Outback Power Systems has long been recognized for its innovation and reliability in the field of renewable energy solutions, particularly with its GFX series of grid-tied inverters. The GFX1312E, GFX1424E, and GFX1448E models exemplify their commitment to quality and performance, making them ideal choices for both residential and commercial applications.

The GFX1312E is designed to deliver a solid 1300 watts of continuous output power at 12 volts, offering efficient energy conversion for smaller solar setups or off-grid living situations. Its compact design allows for easy installation, while advanced engineering ensures high performance even in challenging conditions. The GFX1312E features a pure sine wave output, which is critical for sensitive electronic devices, ensuring compatibility and safeguarding against potential damage.

Moving up in power capacity, the GFX1424E operates at 1400 watts with a 24-volt configuration. This model is particularly well-suited for medium-sized solar energy systems. It supports 120/240 volts split-phase output, providing greater flexibility for various household appliances and ensuring that users can maximize their energy usage with efficiency. The GFX1424E also incorporates an extensive array of intelligent charging profiles that optimize battery performance and longevity.

The GFX1448E caps the series with impressive 1400 watts of continuous output at 48 volts, catering primarily to larger installations and those requiring more robust energy management solutions. This inverter is equipped with Outback's patented GridZero™ technology, allowing for seamless integration of solar energy production with utility power, helping users to minimize grid dependence while maximizing savings. With advanced features like backup capability and grid-interactive operation, this model is highly versatile.

All three models share key characteristics such as network connectivity through the Outback Power's MATE series of controllers, enabling real-time monitoring and system management. They are designed for durability and have protective features against overloads and short circuits, ensuring reliable performance over time. With their modular design, users can easily scale their system by connecting multiple units, making these inverters a practical choice for expanding energy needs.

In summary, the Outback Power Systems GFX1312E, GFX1424E, and GFX1448E inverters provide top-tier options for those looking to harness solar energy efficiently. Their respective power outputs, advanced technologies, and user-friendly interfaces position them as excellent choices for both residential and commercial energy solutions, underscoring Outback's reputation as a leader in the renewable energy market.
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