Outback Power Systems FXR2012E, VFXR2612E, VFXR3024E, VFXR3048, FXR2024E Owner's Manual
...
FXR Series Inverter/Charger
FXR2012E FXR2024E FXR2348E
VFXR2612E VFXR3024E VFXR3048E
Operator’s Manual
About OutBack Power Technologies
OutBack Power Technologies is a leader in advanced energy conversion technology. OutBack products include true sine
wave inverter/chargers, maximum power point tracking charge controllers, and system communication components, as well
as circuit breakers, batteries, accessories, and assembled systems.
Grid/Hybrid™
As a leader in off-grid energy systems designed around energy storage, OutBack Power is an innovator in Grid/Hybrid system
technology, providing the best of both worlds: grid-tied system savings during normal or daylight operation, and off-grid
independence during peak energy times or in the event of a power outage or an emergency. Grid/Hybrid systems have the
intelligence, agility and interoperability to operate in multiple energy modes quickly, efficiently, and seamlessly, in order to
deliver clean, continuous and reliable power to residential and commercial users while maintaining grid stability.
Applicability
These instructions apply to OutBack inverter/charger models FXR2012E, FXR2024E, FXR2348E, VFXR2612E, VFXR3024E, and
VFXR3048E only.
Contact Information
Address: Corporate Headquarters
17825 – 59th Avenue N.E.
Suite B
Arlington, WA 98223 USA
Telephone:
Email: Support@outbackpower.com
Website: http://www.outbackpower.com
+1.360.435.6030
+1.360.618.4363 (Technical Support)
+1.360.435.6019 (Fax)
European Office
Hansastrasse 8
D-91126
Schwabach, Germany
+49.9122.79889.0
+49.9122.79889.21 (Fax)
Disclaimer
UNLESS SPECIFICALLY AGREED TO IN WRITING, OUTBACK POWER TECHNOLOGIES:
(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER
INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.
(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSS OR DAMAGE, WHETHER DIRECT, INDIRECT, CONSEQUENTIAL OR
INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE
ENTIRELY AT THE USER’S RISK.
OutBack Power Technologies cannot be responsible for system failure, damages, or injury resulting from improper
installation of their products.
Information included in this manual is subject to change without notice.
Notice of Copyright
FXR Inverter/Charger Operator’s Manual © 2015 by OutBack Power Technologies. All Rights Reserved.
Trademarks
OutBack Power, the OutBack Power logo, FLEXpower ONE, Grid/Hybrid, and OPTICS RE are trademarks owned and used by
OutBack Power Technologies, Inc. The ALPHA logo and the phrase “member of the Alpha Group” are trademarks owned and
used by Alpha Technologies Inc. These trademarks may be registered in the United States and other countries.
Date and Revision
February 2015, Revision A (firmware revision 001.006.xxx)
Part Number
900-0169-01-00 Rev A
Table of Contents
Introduction .......................................................................................................... 7
Audience ................................................................................................................................................................................. 7
Symbols Used ........................................................................................................................................................................ 7
General Safety ....................................................................................................................................................................... 7
Welcome to OutBack Power Technologies ................................................................................................................. 8
Inverter Functions ................................................................................................................................................................ 8
Inverter Controls ................................................................................................................................................................... 9
MATE3 System Display and Controller ..................................................................................................................................... 9
On/Off Switch .................................................................................................................................................................................. 10
Commissioning .................................................................................................... 11
Functional Test ................................................................................................................................................................... 11
Pre-startup Procedures ................................................................................................................................................................ 11
Startup ............................................................................................................................................................................................... 11
Powering Down .............................................................................................................................................................................. 13
Adding New Devices ..................................................................................................................................................................... 13
Firmware Updates ......................................................................................................................................................................... 14
Operation ............................................................................................................ 15
LED Indicators ..................................................................................................................................................................... 15
Battery Indicators ........................................................................................................................................................................... 15
Status Indicators ............................................................................................................................................................................. 16
Inverter Functionality ...................................................................................................................................................... 17
AC Input Connection ....................................................................................................................................................... 17
Description of AC Input Modes .................................................................................................................................... 17
Generator .......................................................................................................................................................................................... 18
Support .............................................................................................................................................................................................. 18
Grid Tied ............................................................................................................................................................................................ 19
Grid Interface Protection Menu .................................................................................................................................................................... 20
Frequency and Phase Coordination ............................................................................................................................................................ 21
UPS ...................................................................................................................................................................................................... 21
Backup ............................................................................................................................................................................................... 22
Mini Grid ............................................................................................................................................................................................ 22
Grid Zero ........................................................................................................................................................................................... 23
Description of Inverter Operations ............................................................................................................................. 27
Inverting ............................................................................................................................................................................................ 27
DC and AC Voltages .......................................................................................................................................................................................... 27
AC Frequency ...................................................................................................................................................................................................... 28
Search ..................................................................................................................................................................................................................... 28
Input ................................................................................................................................................................................................... 29
AC Current Settings ........................................................................................................................................................................................... 30
AC Source Acceptance ..................................................................................................................................................................................... 30
Generator Input .................................................................................................................................................................................................. 32
Transfer .................................................................................................................................................................................................................. 32
Battery Charging ............................................................................................................................................................................ 33
Charge Current .................................................................................................................................................................................................... 33
Charge Cycle ........................................................................................................................................................................................................ 34
Advanced Battery Charging (ABC) ............................................................................................................................................................... 35
Charging Steps .................................................................................................................................................................................................... 35
New Charging Cycle .......................................................................................................................................................................................... 37
900-0169-01-00 Rev A 3
Table of Contents
Equalization .......................................................................................................................................................................................................... 40
Battery Temperature Compensation .......................................................................................................................................................... 41
Offset .................................................................................................................................................................................................. 42
Multiple-Inverter Installations (Stacking) ............................................................................................................................... 43
Stacking Configurations .............................................................................................................................................................. 44
Parallel Stacking (Dual-Stack and Larger) ................................................................................................................................................. 44
Three-Phase Stacking ....................................................................................................................................................................................... 44
Power Save ........................................................................................................................................................................................................... 46
Auxiliary Terminals ........................................................................................................................................................................ 49
System Display-Based Functions ................................................................................................................................. 52
Advanced Generator Start (AGS) .............................................................................................................................................. 52
Grid Functions ................................................................................................................................................................................. 52
High Battery Transfer (HBX) ............................................................................................................................................................................ 52
Grid Use Time ...................................................................................................................................................................................................... 53
Load Grid Transfer ............................................................................................................................................................................................. 53
Metering ............................................................................................................. 55
MATE3 Screens ................................................................................................................................................................... 55
Inverter Screen ................................................................................................................................................................................ 55
Battery Screen ................................................................................................................................................................................. 56
Troubleshooting .................................................................................................. 57
Basic Troubleshooting ..................................................................................................................................................... 57
Error Messages ................................................................................................................................................................... 62
Warning Messages ............................................................................................................................................................ 63
Temperatures .................................................................................................................................................................................. 64
GT Warnings..................................................................................................................................................................................... 64
Disconnect Messages ...................................................................................................................................................... 65
Sell Status ............................................................................................................................................................................. 66
Specifications ...................................................................................................... 67
Electrical Specifications ................................................................................................................................................... 67
Mechanical Specifications .............................................................................................................................................. 70
Environmental Specifications ....................................................................................................................................... 70
Temperature Derating .................................................................................................................................................................. 71
Regulatory Specifications ............................................................................................................................................... 71
Certifications .................................................................................................................................................................................... 71
Compliance ...................................................................................................................................................................................... 71
Summary of Operating Limits ....................................................................................................................................... 73
Limiting Charge Current (Multiple Inverters) ....................................................................................................................... 73
Firmware Revision ............................................................................................................................................................. 75
Default Settings and Ranges ......................................................................................................................................... 76
Definitions ............................................................................................................................................................................ 82
Index ................................................................................................................... 83
4 900-0169-01-00 Rev A
Table of Contents
List of Tables
Table 1 Battery Indicator Values ............................................................................................................................. 15
Table 2 Summary of Input Modes .......................................................................................................................... 25
Table 3 Charge Currents for FXR Models ............................................................................................................. 33
Table 4 Offset Interaction with AC Source .......................................................................................................... 42
Table 5 Aux Mode Functions ................................................................................................................................... 51
Table 6 Comparison of Grid Functions ................................................................................................................. 53
Table 7 Troubleshooting ........................................................................................................................................... 57
Table 8 Error Troubleshooting ................................................................................................................................ 62
Table 9 Warning Troubleshooting ......................................................................................................................... 63
Table 10 Inverter Temps .............................................................................................................................................. 64
Table 11 GT Warnings ................................................................................................................................................... 64
Table 12 Disconnect Troubleshooting ................................................................................................................... 65
Table 13 Sell Status Messages .................................................................................................................................... 66
Table 14 Electrical Specifications for 12-Volt FXR Models ............................................................................... 67
Table 15 Electrical Specifications for 24-Volt FXR Models ............................................................................... 68
Table 16 Electrical Specifications for 48-Volt FXR Models ............................................................................... 69
Table 17 Mechanical Specifications for FXR Models .......................................................................................... 70
Table 18 Environmental Specifications for all FXR Models ............................................................................. 70
Table 19 Operating Limits for all FXR Models ...................................................................................................... 73
Table 20 Chargers On and Current Settings ......................................................................................................... 74
Table 21 Charge Curre
Table 22 FXR Settings for 12-Volt Models .............................................................................................................. 76
Table 23 FXR Settings for 24-Volt Models .............................................................................................................. 78
Table 24 FXR Settings for 48-Volt Models .............................................................................................................. 80
Table 25 Terms and Definitions ................................................................................................................................. 82
nts for Calculations ............................................................................................................ 75
900-0169-01-00 Rev A 5
Table of Contents
List of Figures
Figure 1 FXR Series Inverter/Charger with Turbo Fan ......................................................................................... 8
Figure 2 MATE3 and AXS Port ................................................................................................................................... 10
Figure 3 AC Terminals .................................................................................................................................................. 12
Figure 4 LED Indicators ................................................................................................................................................ 15
Figure 5 Inverter Status LED Indicators .................................................................................................................. 16
Figure 6 Charging Stages Over Time ...................................................................................................................... 34
Figure 7 Charging Stages Over Time (24/7) ......................................................................................................... 34
st
Figure 8 Repeated Charging (1
Figure 9 Repeated Charging (3
Figure 10 OutBack HUB10.3 and MATE3.................................................................................................................. 43
Figure 11 Example of Parallel Stacking Arrangement (Three Inverters)....................................................... 44
Figure 12 Example of Three-Phase Stacking Arrangement (Three Inverters) ............................................ 45
Figure 13 Example of Three-Phase Stacking Arrangement (Nine Inverters) .............................................. 45
Figure 14 Power Save Levels and Loads .................................................................................................................. 46
Figure 15 Power Save Priority (Parallel) ................................................................................................................... 48
Figure 16 Power Save Priority (Three-Phase) ......................................................................................................... 48
Figure 17 Home Screen .................................................................................................................................................. 55
Figure 18 Inverter Screens ............................................................................................................................................ 55
Figure 19 Battery Screen ................................................................................................................................................ 56
Figure 20 AC Test Points ................................................................................................................................................ 57
Figure 21 Temperature Derating ................................................................................................................................ 71
and 2nd Cycles) ................................................................................................ 38
rd
and 4th Cycles)........................................ Error! Bookmark not defined.
6 900-0169-01-00 Rev A
Introduction
Audience
This manual provides instructions for setup and operation of the product. It does not cover
installation. The manual is intended to be used by anyone required to operate the FXR Series
Inverter/Charger. Operators must be familiar with all the safety regulations pertaining to operating
power equipment of this type as required by local code. Operators are advised to have basic electrical
knowledge and a complete understanding of this equipment’s features and functions. Do not use this
product unless it has been installed by a qualified installer in accordance with the FXR Series
Inverter/Charger Installation Manual.
Symbols Used
WARNING: Hazard to Human Life
This type of notation indicates that the hazard could be harmful to human life.
CAUTION: Hazard to Equipment
This type of notation indicates that the hazard may cause damage to the equipment.
IMPORTANT:
This type of notation indicates that the information provided is important to the
installation, operation and/or maintenance of the equipment. Failure to follow the
recommendations in such a notation could result in voiding the equipment warranty.
MORE INFORMATION
When this symbol appears next to text, it means that more information is available in other
manuals relating to the subject. The most common reference is to the FXR Series Inverter/Charger
Installation Manual. Another common reference is the system display manual.
General Safety
WARNING: Limitations on Use
This equipment is NOT intended for use with life support equipment or other medical
equipment or devices.
WARNING: Reduced Protection
If this product is used in a manner not specified by FXR product literature, the product’s
internal safety protection may be impaired.
CAUTION: Equipment Damage
Only use components or accessories recommended or sold by OutBack Power
Technologies or its authorized agents.
900-0169-01-00 Rev A 7
Introduction
Welcome to OutBack Power Technologies
Thank you for purchasing the OutBack FXR Series Inverter/Charger. It is designed to offer a complete
power conversion system between batteries and AC power.
As part of an OutBack Grid/Hybrid™ system, it can provide off-grid power, grid backup power, or
grid-interactive service which sells excess renewable energy back to the utility.
Figure 1 FXR Series Inverter/Charger with Turbo Fan
Inverter Functions
Battery-to-AC inverting which delivers power to run backup loads and other functions
Provides single-phase output
Adjustable range of output voltage
Settable nominal output frequency
AC-to-battery charging (OutBack systems are battery-based)
Accepts a wide variety of single-phase AC sources
Uses battery energy stored from renewable resources
Can utilize stored energy from many sources (PV arrays, wind turbines, etc.)
OutBack FLEXmax charge controllers will optimize PV power production as part of a Grid/Hybrid system
Rapid transfer between AC source and inverter output with minimal delay time
8 900-0169-01-00 Rev A
Introduction
Uses the MATE3™ System Display and Controller or the AXS Port™ SunSpec Modbus Interface (sold
separately) for user interface as part of a Grid/Hybrid system
MATE3 must have firmware revision 003.002.xxx or higher
Supports the OPTICS RE™ online tool
Requires the MATE3 or the AXS Port
Visit www.outbackpower.com to download
Uses the HUB10.3™ Communications Manager for stacking as part of a Grid/Hybrid system
~ Stackable in parallel and three-phase configurations
Certified by ETL to IEC 62109-1
Field-upgradeable firmware (from www.outbackpower.com); requires MATE3 or AXS Port
Seven selectable input modes for different applications
Generator
Support
Grid Tied (available in 24-volt and 48-models only)
UPS
Backup
Mini Grid
GridZero
Single AC input with dual input programming; individualized modes and priorities can be selected when
switching from utility grid to AC generator
external transfer device required
system display required for individual programming
: This product has a settable AC output range. In this book, many references to the output refer
NOTE
to the entire range. However, some references are made to 230 Vac or 50 Hz output. These are
intended as examples only.
1
for a cloud-based remote monitoring and control application
Inverter Controls
The FXR inverter has no external controls. It can operate normally without an external control or
interface. Basic modes and settings are pre-programmed at the factory. (See the menu tables
beginning on page 76.) However, external communication devices such as the OutBack MATE3 or
AXS Port can be used to operate or program the inverter.
MATE3 System Display and Controller
The MATE3 System Display and Controller (sold separately) is designed to accommodate
programming and monitoring of a Grid/Hybrid power system. The MATE3 provides the means to
adjust the factory default settings to correctly match the installation where needed. It provides the
means to monitor system performance and troubleshoot fault or shutdown conditions. It also has
data logging and interface functions using the Internet.
Once settings are modified using a MATE3, the MATE3 can be removed from the installation. The
settings are stored in the nonvolatile memory of the FXR inverter. However, it is highly recommended
1
Outback Power Technologies Intuitive Control System for Renewable Energy
900-0169-01-00 Rev A 9
Introduction
to include a MATE3 as part of the system. This provides the means to monitor system performance
and respond quickly should it be necessary to correct a fault or shutdown condition.
The MATE3’s Configuration Wizard is capable of automatically configuring inverters to a series of
preset values. This is often more efficient than attempting to manually program each setting in each
inverter. Affected fields include system type, battery charging, and AC source configuration.
IMPORTANT:
The MATE3 system display must have firmware revision 003.002.xxx or higher.
IMPORTANT:
Some functions are not based in the inverter, but are part of the MATE3 firmware.
They will not function if the system display is removed. These functions are listed
beginning on page 52.
IMPORTANT:
The FXR inverter is only compatible with the MATE3 System Display and Controller.
It is not intended for use with the OutBack MATE or MATE2 products.
The FXR inverter can use the OPTICS RE online tool as a system display.
OPTICS RE must be used in conjunction with the MATE3 or with the AXS Port
SunSpec Modbus Interface.
On/Off Switch
If a system display is not in use, the inverter can be equipped with a switch to turn it on and off. This
switch is not sold as an inverter accessory; a common toggle switch can be used. The switch is wired
to the
INVERTER ON/OFF
for more information on wiring the switch.)
This switch turns only the inverter on and off. It does not turn the charger or any other function on or
off. All inverter functions will operate according to their programmed settings. Functions included
with a system display will not be available.
10 900-0169-01-00 Rev A
auxiliary terminals. (See the FXR Series Inverter/Charger Installation Manual
Figure 2 MATE3 and AXS Port
Commissioning
Functional Test
WARNING: Shock Hazard and Equipment Damage
The inverter cover must be removed to perform these tests. The components are close together and carry
hazardous voltages. Use appropriate care to avoid the risk of electric shock or equipment damage.
It is highly recommended that all applicable steps be performed in the following order. However, if
steps are inapplicable, they can be omitted.
If the results of any step do not match the description, see the Troubleshooting section on page 57.
Pre-startup Procedures
1. Ensure all DC and AC overcurrent devices are opened, disconnected, or turned off.
2. Double-check all wiring connections.
3. Confirm that the total load does not exceed the inverter’s wattage. (See page 27 and the
specifications tables beginning on page 67.)
4. Inspect the work area to ensure tools or debris have not been left inside.
5. Using a digital voltmeter (DVM) or standard voltmeter, verify battery voltage. Confirm the
voltage is correct for the inverter model. Confirm the polarity.
6. Connect the system display, if present.
CAUTION: Equipment Damage
Incorrect battery polarity will damage the inverter. Excessive battery voltage also may damage the inverter.
This damage is not covered by the warranty.
IMPORTANT:
Prior to programming (see Startup), verify the operating frequency of the AC source. This is necessary for
correct AC operation. The default setting is 50 Hz, but this can be changed to 60 Hz.
Startup
To start a single-inverter system:
1. Close the main DC circuit breakers (or connect the fuses) from the battery bank to the inverter.
Confirm that the system display is operational, if present.
900-0169-01-00 Rev A
11
Commissioning
Figure 3 AC Terminals
2. If a system display is present, perform all programming for all functions.
These functions may include AC input modes, AC output voltage, input current limits, battery
charging, generator starting, and others.
AC input modes are described beginning on page 17 and are summarized on page 25. The
inverter’s individual operations are described beginning on page 27.
3. Turn on the inverter using the system display (or external switch, if one has been installed). The
inverter’s default condition is Off. Do not turn on any AC circuit breakers at this time.
4. Using a DVM or voltmeter, verify 230 Vac (or appropriate voltage) between the AC HOT OUT and
AC NEUTRAL OUT terminals. (See Figure 3 for AC terminals.) The inverter is working correctly if
the AC output reads within 10% of 230 Vac or the programmed output voltage.
5. Proceed past the items below to Step 6 on the next page.
To start a multiple-inverter (stacked) system:
1. Close the main DC circuit breakers (or connect the fuses) from the battery bank to the inverter.
Repeat for every inverter present. Confirm that the system display is operational.
With the system display, perform any programming for stacking and all other functions.
These functions may also include AC input modes, AC output voltage, input current limits, battery
charging, generator starting, and others. When stacking in parallel, all slave inverters will observe
the programming settings for the master. They do not need to be programmed individually.
The MATE3 Configuration Wizard may be used to assist programming.
AC input modes are described beginning on page 17 and are summarized on page 25. The
inverter’s individual operations are described beginning on page 27. Stacking is described
beginning on page 43.
2. Turn on the master inverter using the system display (or external switch, if one has been installed).
The inverter’s default condition is Off. Do not turn on any AC circuit breakers at this time.
12 900-0169-01-00 Rev A
Commissioning
3. Using the system display, temporarily bring each slave out of Silent mode by raising the Power
Save Level of the master. (See page 46.)
As each slave is activated, it will click and create an audible hum.
Confirm that the system display shows no fault messages.
4. Using a DVM or voltmeter, verify appropriate voltage between the AC HOT OUT terminal on the
master inverter and the AC HOT OUT terminal on each slave. Parallel inverters should read close to
zero. Three-phase inverters should read within 10% of 400 Vac or the designated output voltage.
When this test is finished, return the master to its previous settings.
After output testing is completed, perform the following steps:
5. Close the AC output circuit breakers. If AC bypass switches are present, place them in the normal
(non-bypass) position. Do not connect an AC input source or close any AC input circuits.
6. Use a DVM to verify correct voltage at the AC load panel.
7. Connect a small AC load and test for proper functionality.
8. Close the AC input circuit breakers and connect an AC source.
Using a DVM or voltmeter, check the AC HOT IN and AC NEUTRAL IN terminals for 230 Vac (or
appropriate voltage) from the AC source.
If a system display is present, confirm that the inverter accepts the AC source as appropriate for its
programming. (Some modes or functions may restrict connection with the source. If one of these
selections has been used for the system, it may not connect.) Check the system display indicators for
correct performance.
9. If the charger is activated, the inverter will perform a battery charging cycle after powering up.
This can take several hours. If restarted after a temporary shutdown, the inverter may skip most or
all of the charging cycle. Confirm that it is charging as appropriate by using the system display.
10. Test other functions which have been enabled, such as generator start, selling, or search mode.
11. Compare the DVM’s readings with the system display meter readings. If necessary, the system
display’s readings can be calibrated to match the DVM more accurately. Calibrated settings
include AC input voltage for the AC input voltage, AC output voltage, and battery voltage.
Powering Down
These steps will completely isolate the inverter.
To remove power from the system:
1. Turn off all load circuits and AC input sources.
2. Turn off all renewable energy circuits.
3. Turn each inverter OFF using the MATE3 system display or external switch.
4. Turn off the main DC overcurrent devices for each inverter.
Adding New Devices
When adding new devices to the system, first turn off the system according to the Power Down
instructions. After adding new devices, perform another functional test, including programming.
900-0169-01-00 Rev A 13
Commissioning
Firmware Updates
IMPORTANT:
All inverters will shut down during firmware updates. If loads need to be run while
updating the firmware, bypass the inverter with a maintenance bypass switch.
Communication cables must remain connected and DC power must remain on.
Interrupted communication will cause the update to fail and the inverter(s) may not work
afterward. Inverters automatically update one at a time beginning with the highest port.
Each requires about 5 minutes.
Updates to the inverter’s internal programming are periodically available at the OutBack website
www.outbackpower.com. If multiple inverters are used in a system, all units must be upgraded at the
same time. All units must be upgraded to the same firmware revision.
IMPORTANT:
All stacked FXR inverters must have the same firmware revision. If multiple stacked
inverters are used with different firmware revisions, any inverter with a revision different
from the master will not function. (See the stacking section on page 43.) The MATE3 will
display the following message:
An inverter firmware mismatch has been detected. Inverters X, Y, Z 2 are disabled. Visit
www.outbackpower.com for current inverter firmware.
NOTES:
2
The port designations for the mismatched inverters are listed here.
14
900-0169-01-00 Rev A
LED Indicators
Operation
AUX Indicator (see page 49)
Battery
Indicators
Status Indicators
Figure 4 LED Indicators
Battery Indicators
The Battery LED indicators show the approximate battery state. (See
IMPORTANT
Battery indicators and the Inverter Status indicators are independent. They may accompany each other
depending on conditions. Common combinations are noted on page 16.
A green indicator (FULL) means the batteries have an adequate charge at that time. It does not always mean
they are full. It may be accompanied by a yellow Status indicator when an AC source is charging.
A yellow indicator (OK) means the batteries are somewhat discharged.
A red indicator (LOW) means the batteries are greatly discharged and may require attention. It may be
accompanied by a red Status indicator to indicate a low battery error.
Table 1 Battery Indicator Values
Color 12 Vdc Unit 24 Vdc Unit, ± 0.2 Vdc 48 Vdc Unit, ± 0.4 Vdc Battery Status
GREEN 12.5 Vdc or higher 25.0 Vdc or higher 50.0 Vdc or higher ACCEPTABLE
YELLOW 11.5 to 12.4 Vdc 23.0 to 24.8 Vdc 46.0 to 49.6 Vdc MARGINAL
RED 11.4 Vdc or lower 22.8 Vdc or lower 45.6 Vdc or lower LOW
note below.) The
NOTES
900-0169-01-00 Rev A
:
Gaps in the table (higher-voltage units) are due to the resolution of the inverter’s DC meter.
These voltage settings are not the same as the Low Battery Cut-Out (LBCO) set point. (See page 27.) The Battery indicator
settings cannot be changed.
Voltages higher than shown in the GREEN row usually show that the batteries are charging.
IMPORTANT:
Due to different system states, battery voltage does not always indicate an accurate state of charge. It is
accurate if batteries have been at rest for several hours at room temperature (25°C or 77°F, or as specified
by the battery manufacturer). If they have
their voltage may not reflect their true state. The OutBack FLEXnet DC is a battery monitor that can be
added to the system to provide accurate measurements.
loads, a charging source, or are at another temperature,
any
15
Operation
Status Indicators
STATUS INVERTER (Green):
Solid: The FXR inverter is on and providing power.
If accompanied by a solid yellow
inverter is also connected to the utility grid with an AC input
mode that uses both inverter power and grid power
(
Support, Grid Tied
See page 17 for descriptions of AC input modes.
, or
GridZero
indicator (2), the
AC IN
).
Flashing: The inverter has been turned on but is idle.
The inverter is likely in Search mode. See page 28.
Off: The inverter is off. It is not waiting to provide power.
See Startup on page 11, or the system display manual, to turn
the inverter on.
Any power present is from another source such as the utility grid
or generator.
The inverter may also be a slave that is in Silent mode due to the
Power Save function. If so, the master inverter may still be
providing power to the system.
See page 46 for a description of Power Save.
AC IN (Yellow):
Solid: The AC source is connected and providing power.
The FXR inverter may or may not be charging the batteries, depending on settings.
May be accompanied by green
STATUS INVERTER
indicator (1).
Flashing: The AC source is present but has not been accepted.
If flashing continues, the FXR inverter is refusing the source. See the Troubleshooting section on page 57.
Off: No AC source is detected.
If a source is supposed to be present, see the Troubleshooting section on page 57.
ERROR (Red):
Solid: Error. The inverter has shut down due to a critical problem which may be internal or external.
This indicator is accompanied by an error message in the system display.
See page 62 for a description of error messages.
Flashing: Warning. The inverter has detected a non-critical problem but has not yet shut down.
A warning does not always lead to a shutdown — if it does, it becomes an error.
This indicator is accompanied by a warning message in the system display.
See page 63 for a description of warning messages.
Off: No problems are detected.
Figure 5 Inverter Status LED Indicators
16 900-0169-01-00 Rev A
Operation
T
Inverter Functionality
The FXR inverter can be used for many applications. Some of the inverter’s operations occur
automatically. Others are conditional or must be enabled manually before they will operate.
Most of the inverter’s individual operations and functions can be programmed using the system
display. This allows customization or fine tuning of the inverter’s performance.
Before operating the inverter:
The operator needs to define the application and decide which functions will be needed. The FXR
inverter is programmed with many AC input modes. Each mode has certain advantages which make it
ideal for a particular application. Some modes contain functions unique to that mode.
The modes are described in detail following this section. To help decide which mode will be used, the
basic points of each mode are compared in Table 2 on page 25.
Apart from the input modes, FXR inverters possess a set of common functions or operations. These
operations are described in detail beginning on page 27. Most of these items operate the same
regardless of which input mode is selected. The exceptions are noted where appropriate.
Each distinct mode, function, or operation is accompanied by a symbol representing the inverter and
that operation:
DC
RANSFER
AC IN 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 power flow.
The symbols may have other features depending on the operation.
AC Input Connection
The FXR inverter has one set of input connections. Only one AC source can be physically wired to it at
any time. However, two different AC sources can be used with an external transfer switch. It is
common for backup or grid-interactive systems to use the utility grid as the primary source, but switch
to a gas- or diesel-powered generator in emergencies. The inverter can be programmed with separate
input criteria for each source.
The inverter’s two input selections can be programmed for separate input modes (see below). The
selection (
beginning on page 76.)
NOTE:
of inverter requirements. Each selection can accept any AC source as long as it meets the
requirements of the FXR inverter and the selected input mode. If necessary, the
accept grid power. The opposite is also true.
The input types are labeled for grid and generator due to common conventions, not because
Grid
or
) can be chosen in the
Gen
AC Input and Current Limit
menu. (See the menu tables
selection can
Gen
Description of AC Input Modes
These modes control aspects of how the inverter interacts with AC input sources. Each mode is
intended to optimize the inverter for a particular application. The names of the modes are
Support, Grid Tied, UPS, Backup, Mini Grid
in Table 2. See page 25.
, and
GridZero
. The modes are summarized and compared
Generator
,
900-0169-01-00 Rev A 17
Operation
When multiple inverters are stacked together in parallel, the master inverter’s input mode is imposed
on all slaves. (See the stacking section on page 43.) The slave settings are not changed; they retain
any mode that was previously programmed. However, the slave will ignore its programmed mode
and use that of the master. This also applies to any parameters in the mode menu (
Connect Delay
, and so on).
The following pages compare the various functions of each input mode.
Voltage Limit
,
Generator
The
Generator
mode allows the use of a wide range of AC sources, including generators with a rough
or imperfect AC waveform. In other modes, a “noisy” or irregular waveform may not be accepted by
the inverter. (Self-excited induction generators may require this mode when used with the inverter.)
Generator
allows these waveforms to be accepted. The charging algorithm of this mode is designed
to work well with AC generators regardless of power quality or regulation mechanism. The generator
must still comply with the inverter’s nominal input specifications. (See page 29.)
:
Generator
Generator
Connect Delay
menus, depending on which input is being programmed.
mode does not mean that the inverter requires a generator input when using this
. It is available in both the
mode may allow the inverter to accept the power.
Grid AC Input Mode and Limits
input type; either selection can be used.
Gen
and the
BENEFITS:
The FXR inverter will charge the batteries from the generator even when the generator is undersized, of low
quality, or has other problems. See page 32 for recommended parameters for sizing a generator.
If the utility grid is unstable or unreliable,
A programmable delay time is available which will allow a generator to stabilize before connection. In the
MATE3, this menu item is
Gen AC Input Mode and Limits
NOTES
Any AC fluctuations that are accepted by the inverter will be transferred to the output. The loads will be
exposed to these fluctuations. It may not be advisable to install sensitive loads under these conditions.
The name of
mode. The use of this mode does not require the use of the
Conversely, the inverter is not required to be placed in this mode because a generator is installed.
Support
The
Support
amount of current available from the source is limited due to size, wiring, or other reasons. If large
loads need to be run, the FXR inverter augments (supports) the AC source. The inverter uses battery
power and additional sources to ensure that the loads receive the power they demand.
In the MATE3 system display, the
input. The
effect if the AC demand on either input exceeds the
BENEFITS
Large inverter loads can be powered while staying connected to the AC input, even if the input is limited.
The added battery power prevents overload of the input source, but the batteries are not in constant use.
The FXR inverter will offset the loads with excess renewable energy if it is available from the batteries. See
page 42 for more information.
18
mode is intended for systems that use the utility grid or a generator. In some cases the
Gen Input AC Limit
:
Grid Input AC Limit
dictates the maximum AC draw for the Grid
sets the maximum draw for the Gen input. The Support function takes
AC Limit
setting.
900-0169-01-00 Rev A
Operation
NOTES
:
IMPORTANT:
The inverter will draw energy from the batteries when the loads exceed the
appropriate
discharge to the Low Battery Cut-Out point. The inverter will shut down with a Low
Battery error. (See pages 27 and 62.) To prevent the loss of power, load use should be
planned accordingly.
IMPORTANT:
A “noisy” or irregular AC source may prevent
inverter will transfer the power, but will not support the source, charge the batteries, or
interact with the current in any other way. This problem is more common with
generators smaller than the wattage of the inverter.
AC Limit
A programmable delay time is available which will allow an AC source to stabilize before connection. In the
MATE3, this menu item is
Gen AC Input Mode and Limits
Connect Delay
menus, depending on which input is being programmed.
Because the inverter limits the current draw from the AC source, it will reduce the charge rate as necessary
to support the loads. If the loads equal the appropriate
. With sustained loads and no other DC source, the batteries may
Support
. It is available in both the
AC Limit
from working normally. The
Grid AC Input Mode and Limits
setting, the charge rate will be zero.
and the
If the AC loads
exceed
the
AC Limit
setting, the Support function is activated. Instead of charging, the
inverter will take power from the batteries and use it to support the incoming AC current.
The
Support
function is not available in any other input mode.
Grid Tied
IMPORTANT:
Selling power to the utility company requires the authorization of the local electric
jurisdiction. How the utility company accommodates this will depend on their policies
on the issue. Some may pay for power sold; others may issue credit. Some policies may
prohibit the use of this mode altogether. Please check with the utility company and
obtain their permission before using this mode.
The
Grid Tied
using power from the utility grid for charging and loads, the inverter can also convert excess battery
power and sell it to the utility grid. Excess battery power usually comes from renewable energy
sources, such as PV arrays, hydroelectric turbines, and wind turbines.
NOTE:
This mode is not available in 12-volt FXR models. It does not appear on the system display’s
list of available input modes.
mode allows the FXR inverter to become grid-interactive. This means that in addition to
The grid-interactive function uses Offset operation. See page 42 for more information.
BENEFITS
Excess power is returned to the utility grid.
The inverter will offset the loads with excess renewable energy if it is available from the batteries.
If the excess energy is greater than the AC demand (the load size), the excess will be sold to the grid.
900-0169-01-00 Rev A
:
19
Operation
NOTES
:
The inverter has a delay before selling will begin. This function, the
setting of one minute. During this time, the inverter will not connect to the utility grid. The timer is adjustable
in the
Grid Interface Protection
Upon initial connection to the utility grid, the inverter may be required to perform a battery charging cycle.
This may delay the operation of the grid-interactive function.
The grid-interactive function only operates when excess DC (renewable) power is available.
The grid-interactive function is not available in any of the other input modes.
When power is returned to the utility grid, it may be possible to reverse the utility meter. However, this
depends on other loads in the system. Loads on the main panel (not on the inverter’s output) may consume
power as fast as it is sold. The meter would not run backwards, even if the system display showed the
inverter selling power. The result of selling would be to reduce AC power consumption, not reverse it.
The amount of power an inverter can sell is not necessarily equal to its specified output wattage. The
Maximum Sell Current
the
Grid Interface Protection
The amount of power that is sold is controlled by the utility grid voltage. The wattage sold equals this
voltage multiplied by the current. For example, if the inverter sells 15 amps and the voltage is 231 Vac,
the inverter will sell 3.47 kVA. If the voltage is 242 Vac, the inverter will sell 3.63 kVA. Additionally,
output will vary with inverter temperature, battery type, and other conditions.
This recommendation is specifically for the inverter’s grid-interactive function. In some cases, the
source may be sized larger to account for environmental conditions or the presence of DC loads. This
depends on individual site requirements.
can be decreased if it is necessary to limit the power sold. This item is available in
menu (see below).
menu (see below).
Re-Connect Delay Timer
, has a default
Grid Interface Protection Menu
Due to varying requirements in different locations around the world, the grid-interactive settings are
adjustable. These adjustments are made in the
This menu is only available to operators with installer-level access. There are firm rules concerning the
acceptable voltage range, frequency range, clearance time during power loss, and reconnect delay when
exporting power to the utility. Generally it is expected that the end user cannot alter the settings.
The installer password must be changed from the default in order to get access to these settings. Once this
password has been changed, the settings can only be accessed with the MATE3 installer password.
See the tables beginning on page 76 for the locations of all menu items in the MATE3 menus.
The grid-interactive function can only operate while the utility grid power is stable and within specific limits.
In Grid Tied mode, the inverter will operate in accordance with the Grid Interface Protection settings.
The default settings and ranges are listed in the tables which begin on page 76.
If the AC voltage or frequency vary outside the Grid Interface Protection limits, the inverter will
disconnect from the utility grid to prevent selling under unacceptable conditions. These limits override
the AC source acceptance limits described on page 30, which are used in other input modes. The
inverter will not reconnect until the source is acceptable for the duration of the Re-Connect Delay Timer.
If the inverter stops selling or disconnects due to Grid Interface Protection, the MATE3 will show the
reason. Sell Status messages are listed on page 66. Disconnect messages are listed on page 65. Often
these messages will be the same.
Before operating in Grid Tied mode, contact the utility company that provides power to the installation.
They can provide information regarding the rules that must be followed in order to export power back
to the utility. The items in the following list are the selectable Grid Interface Protection options. The
utility company may need to review these items to make certain their standards are met.
Grid Interface Protection
menu.
20 900-0169-01-00 Rev A
Operation
The utility may simply name a standard to be followed. It may be necessary to look up the requirements
for a local standard and program them accordingly.
STAGE 1 Voltage (basic settings)
Over Voltage Clearance Time (seconds)
Over Voltage Trip (AC Voltage)
Under Voltage Clearance Time (seconds)
Under Voltage Trip (AC Voltage)
STAGE 2 Voltage (if required by utility)
Over Voltage Clearance Time (seconds)
Over Voltage Trip (AC Voltage)
Under Voltage Clearance Time (seconds)
Under Voltage Trip (AC Voltage)
See the tables beginning on page 76 for the default settings and ranges.
Frequency Trip
Over Frequency Clearance Time (seconds)
Over Frequency Trip (Hertz)
Under Frequency Clearance Time (seconds)
Under Frequency Trip (Hertz)
NOTE: The Frequency Trip settings are dependent on
the inverter’s operating frequency, which must be set
correctly. See page 11.
Mains Loss
Clearance Time (seconds)
Reconnect Delay (seconds)
Frequency and Phase Coordination
Several other inverter adjustments are located in the
Grid Interface Protection
items can only be changed with installer-level access.
The FXR inverter’s operating frequency can be selected to either 50 or 60 Hz using the
Protection
See page 28 for more information on the inverter’s frequency.
The FXR inverter’s stacking function includes the option called
menu item is
source is required to deliver appropriate input to all inverters in a stacked system. If the master or subphase
master inverters do not sense an acceptable AC source, the entire system disconnects from the source.
None of the inverters will reconnect until the source is acceptable for the duration of the appropriate timer.
If the inverter is in Grid Tied mode, the Re-Connect Delay timer is used.
If the inverter is any other AC input mode, the Connect Delay timer is used.
See pages 29 and 31 for more information on input acceptance and the transfer function.
menu. This setting changes the inverter’s input acceptance parameters, as well as its output.
Multi-Phase Coordination
Coordinated AC Connect/Disconnect
. The default setting is No. If selected to
menu. These sensitive
Grid Interface
. The selectable
, the AC
Yes
See page 43 for more information on the stacking function and subphase master inverters.
See the tables beginning on page 76 for the default settings and ranges.
UPS
In
UPS
Failure
mode, the FXR parameters have been optimized to reduce the response time. If the utility grid
becomes unstable or is interrupted, the inverter can transfer to inverting with the fastest possible
response time. This allows the system to support sensitive AC loads with minimal interruption.
BENEFITS
Constant power is provided to the loads with virtually no drop in voltage or current.
NOTES
Due to the need for the FXR inverter to react quickly to AC source fluctuations, it must remain fully active at
all times. The inverter requires a continuous consumption of 42 watts.
For this reason, the Search function does not operate in this mode. (See page 28.)
900-0169-01-00 Rev A 21
:
:
Operation
Backup
Failure
The
Backup
This source will pass through the FXR inverter’s transfer circuit and will power the loads unless utility
power is lost. If utility grid power is lost, then the inverter will supply energy to the loads from the
battery bank. When the utility power returns, it will be used to power the loads again.
BENEFITS
This mode will continuously maintain the batteries in a fully-charged state, unlike the
does not have the overhead consumption of the
Mini Grid
In
Mini Grid
(and renewable) energy. The inverter only connects to the AC source (usually the utility grid) when
the batteries run too low.
The FXR inverter runs on battery-supplied power for as long as the batteries can be sustained. It is
expected that the batteries will also be charged from renewable sources such as PV. When the
batteries become depleted, the system reconnects to the utility grid to operate the loads.
The inverter will reconnect to the utility grid if the battery voltage decreases to the
set point and remains there for the
begin on page 76.
mode is intended for systems that have utility grid available as the primary AC source.
:
Support
mode.
UPS
mode, the FXR inverter automatically rejects an AC source and runs solely from battery
time period. These items are shown in the tables which
Delay
mode. It
Connect to Grid
While connected to the utility grid, the FXR charger can be set either on or off. If the charger is turned
on, the inverter will proceed through a full charging cycle. Upon reaching float stage, the inverter will
disconnect from the grid.
If the inverter is connected to the utility grid and the charger is turned off, another DC source such as
renewable energy should be present to charge the batteries. The inverter will observe the batteries as
if it was performing the charge. When the batteries reach the required voltages and charging times to
achieve float stage, the inverter will disconnect from the grid. This means that the regulator for the
renewable source must be set to the same settings as the inverter (or higher). Check the settings of
both devices as needed.
See page 32 for more information on the battery charging cycle.
BENEFITS
Mini Grid
possible if certain conditions are met. See below.
NOTES
The FXR inverter will offset the loads with excess renewable energy if it is available from the batteries.
See page 42 for more information on Offset operation. However, the Offset function is inapplicable when
the inverter disconnects from an AC source. The renewable energy supports the inverting function instead.
This mode has similar priorities to the high-battery transfer (HBX) function used by the MATE3 system
display. However, it is not compatible with HBX and cannot be used at the same time. When using Mini
Grid mode, the system display should disable HBX to prevent conflicts.
:
mode allows a system to minimize or eliminate dependence on the utility grid. This is only
:
22 900-0169-01-00 Rev A
Operation
Mini Grid
system display. These functions do not have similar priorities to
inverter’s connection and disconnection with the grid.
When deciding whether to use
Mini Grid logic is based in the FXR inverter and can function in the absence of the MATE3. HBX logic is
Mini Grid can use utility grid power to fully recharge the batteries every time it reconnects to the grid.
HBX set points have a wide range of settings. Mini Grid uses settings intended to protect the batteries
HBX works more efficiently with a larger renewable source, but there is no specification for renewable
Mini Grid is one of seven inverter-level functions (modes) which share a single input. Selecting it
See Table 6 on page 53 for a comparison summary. Pages 52 and 53 have more information on HBX,
mode is also incompatible with the
Mini Grid
based in the MATE3 and cannot function unless the MATE3 is installed and operating.
HBX can only do so under specific circumstances.
from excessive discharge; however, most of its settings are automatic and do not allow customization.
size. Mini Grid cannot work properly unless the source is larger than the size of the loads. If this
condition is not met, Mini Grid will not disconnect the inverter from the utility grid.
prevents any other input mode from being used. HBX is a system-level function which can be
combined with the settings of other input modes.
Grid Use Time, Load Grid Transfer, and other functions of the system display.
Grid Use Time
mode or
HBX
and
Load Grid Transfer
Mini Grid
Mini Grid
, the user should consider the aspects of each.
should not be used with these functions.
or
functions of the MATE3
, but they do control the
HBX
GridZero
In
GridZero
mode, the FXR inverter remains grid-connected, but prioritizes the use of battery or
renewable sources to run loads. It uses only renewable energy to recharge the batteries. The inverter
tries to “zero” the use of the utility grid, drawing on AC power only when needed to supplement
stored DC sources. Note that the inverter draws up to 1 Aac regardless of the DC sources.
In the MATE3 system display, the selectable options are
DoD Volts
battery power to the loads when the batteries exceed the
DoD Volts
and
DoD Amps
. The inverter sends
setting. (12-, 24-, and 48-volt
systems must exceed the setting by 0.2, 0.4, and 0.8 Vdc respectively.) As the battery voltage decreases
to
DoD Volts
, the inverter reduces the current toward zero. It will maintain the batteries at this setting.
The FXR inverter can manage large quantities of power. To prevent damage to the batteries from
rapid discharge, the rate of discharge can be limited using the
DoD Amps
setting. This item should be
set lower than the current provided by the renewable source.
When
DoD Volts
the loads. However, it will also leave less of a battery reserve in the event of a grid failure.
When
DoD Volts
reserve. However, not as much renewable energy will be sent to the loads.
is set low, this mode allows more renewable energy to be delivered from the batteries to
is set high, the batteries will not be discharged as deeply and will retain more of a backup
The renewable energy source needs to exceed the size of all loads and possible losses. The renewable
source must also charge the batteries. The inverter does not charge the batteries in
BENEFITS
This mode seamlessly blends the use of battery power and grid power. It puts renewable energy to the
most effective use without selling power to the utility grid.
GridZero
The inverter remains connected to the utility grid in case the grid is needed. If large loads require the use of
grid power, no transfer is necessary to support the loads.
:
mode minimizes dependence on the grid as long as certain conditions are met.
GridZero
mode.
900-0169-01-00 Rev A 23
Operation
NOTES
:
IMPORTANT:
Setting
DoD Volts
not have sufficient reserve to provide backup in the event of a grid failure. To prevent
the loss of power, load use and the
too low will severely discharge the batteries. The battery bank may
DoD Volts
setting should be planned accordingly.
If the renewable energy source is not greater than the size of the inverter loads, this mode will not work well
over time. The renewable source must be capable of charging the batteries as well as running the loads.
This occurs when renewable energy production exceeds the
DoD Amps
setting.
The inverter will offset the loads with excess renewable energy if it is available from the batteries. See
page 42 for more information on Offset operation. However, the behavior of Offset in
different because it uses the
DoD Volts
exclusively.
Grid Zero
mode is
The inverter’s battery charger cannot be used in this mode. However, the charger menu settings and timer
operations are not changed when this mode is selected.
The battery should be discharged whenever possible in the attempt to “zero” the grid usage. If the
setting is limited or loads are not present, the batteries will be unable to accept much renewable
Amps
recharging the next time it is available. The renewable energy will be wasted, leaving the system
dependent on the utility grid more than necessary.
DoD
24
900-0169-01-00 Rev A
Operation
Table 2 Summary of Input Modes
Mode Summary Benefits Cautions Intended Charger
Generator
Support
GridTied
UPS
Accepts power
from an
irregular or
low-quality
AC source
Adds battery
power to
augment an
AC source that
has limited
output
Inverter sells
excess power
(renewable)
to utility;
available in
24-volt and
48-volt
models only
In grid failure,
unit switches
to batteries
with fastest
possible
response time
Can use AC that may be
unusable in other modes
Can charge even with a
poor generator or
low-quality AC source
Can use battery power
in conjunction with
AC source
Offset operation sends
excess DC to loads
Bidirectional input
Can reduce utility bills
and still provide backup
Offset operation sends
excess DC to loads
Any additional Offset
excess is sold to the grid
Quick backup for
sensitive devices during
grid outage
Will pass irregular or
low-quality power to
the output; could
damage sensitive loads
Offset unavailable
Drains batteries during
support; intended for
intermittent use only
May not function with
low-quality AC source
Requires utility
approval
Other approvals may be
required depending on
electrical codes
Has exact requirements
for accepting AC input
Requires renewable
energy source
Uses higher idle power
than other modes
Search function
unavailable
Offset unavailable
Source:
Generator
Loads:
Nonsensitive
devices
Source:
Grid or
Generator
Loads:
Can be
larger than
AC source
Source:
Grid
Loads:
Any type
Source:
Grid
Loads:
PC, audio,
video, etc.
Performs three-stage
charge and goes
silent as specified by
settings
Performs three-stage
charge and goes
silent as specified by
user settings
Performs three-stage
charge and goes
silent as specified by
user settings
Performs three-stage
charge and goes
silent as specified by
user settings
Backup
MiniGrid
In grid failure,
unit switches
batteries to
support loads;
this is the
default mode
Stays off grid
most of the
time; only uses
grid when
batteries low
Simple use compared to
other modes; often
used with generators for
this reason
Less idle power than
Does not drain battery as
in
Support
Can minimize/eliminate
dependence on grid
Offset operation sends
excess DC to loads (but
only when on grid)
Has none of the special
functions described in
other modes
UPS
Will not work properly
unless renewable
source is above a
certain size
Conflicts with related
Source:
Grid or
Generator
Loads:
Any type
Source:
Grid
Loads:
Any type
modes in MATE3
GridZero
On-grid but
actual grid use
is minimized
(“zeroed”) with
battery and
renewable
power; does
not sell or
Can minimize
dependence on grid
Offset operation sends
excess DC to loads at
adjustable rate
Remains on-grid to avoid
transfer problems
charge
900-0169-01-00 Rev A 25
Discharges batteries
while remaining on grid
Will not work properly
unless renewable
source is above a
certain size
Battery charger
inoperative
Source:
Grid
Loads:
Any type
Performs three-stage
charge and goes
silent as specified by
user settings
Performs three-stage
charge on reconnect;
if charger is disabled,
inverter emulates
charge cycle from
external source and
reacts accordingly
Charger inoperative;
batteries must be
charged using an
external (renewable)
energy source
Operation
NOTES:
26 900-0169-01-00 Rev A
Operation
Description of Inverter Operations
The items in this section are operations common to all FXR inverters. These are used in most or all of
the input modes described in the preceding section.
Some of the items in this section are functions which can be manually selected, enabled, or
customized. Other items are general topics or applications for the inverter. These items may not have
their own menus, but their activity can still be influenced or optimized by changing certain settings.
Any of these items may need to be adjusted so that the inverter is best matched to a particular
application. The operator should review these items to see which are applicable.
All items described as settable or adjustable have set points which can be accessed using the
system display. The default settings and ranges of adjustment are listed in the menu tables which
begin on page 76 of this manual.
Inverting
This is the FXR inverter’s primary task. The inverter converts 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’s design uses a transformer and a high-frequency H-Bridge FET module to achieve the
required high-wattage output. The inverter can deliver the rated wattage continuously at 25°C. The
maximum output is derated at temperatures exceeding 25°C. See pages 67 and 71 for these wattages.
Measure the total load wattage so that it does not exceed the inverter’s capacity. The inverter cannot
maintain its AC voltage under an excessive load. It will shut down with a
V
DC and AC Voltages
The FXR inverter requires batteries to operate
V
. Other sources may not maintain DC voltages that
Low Output Voltage
error.
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 with the batteries and
the inverter, but not in place of the batteries.
The following items will affect the inverter’s operation. These are only used when the inverter is
generating AC power on its own.
Low Battery Cut-Out
DC voltage drops below a specified level for 5 minutes, the inverter will stop functioning. The MATE3 will
give a
Low Battery V
on the MATE3 system display.
: This function prevents the inverter from draining the batteries completely. When the
error. This is one of the error messages described on page 62. It appears as an event
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.
Low Battery Cut-In
point for 10 minutes, the error will clear and the inverter will resume functioning. This item is adjustable.
Connecting an AC source for the inverter to charge the batteries will also clear a low battery error.
900-0169-01-00 Rev A 27
: The recovery point from Low Battery Cut-Out. When the DC voltage rises above this
Operation
Output Voltage
to be used for different nominal voltages such as 220 Vac and 240 Vac.
The inverter is also controlled by a high battery cut-out limit. If the DC voltage rises above this limit, the
inverter immediately stops functioning and gives a
inverter from damage due to excessive DC voltage.
The high battery cut-out voltages for each model are shown in Table 19 on page 73. This voltage is not
a changeable set point.
If the voltage drops below this point, the inverter automatically recovers.
This is one of the errors on page 62. It appears as an event on the MATE3 system display.
The low battery and high battery functions are summarized in Table 19 on page 73.
: The AC output voltage can be adjusted. Along with small changes, this allows the inverter
IMPORTANT:
The output voltage can adjusted to a different nominal value for a particular region.
Making this change will not affect the default input voltage range accepted by the
inverter from an AC source. The input range must be adjusted manually. These
changes should be made at the same time. (See AC Source Acceptance on page 30.)
High Battery V
error. The shutdown protects the
AC Frequency
Hz
CAUTION: Equipment Damage
Setting the inverter’s output frequency to deliver 50 Hz to 60-Hz loads, or setting it to
deliver 60 Hz to 50-Hz loads, could damage sensitive devices. Make certain the
inverter’s output frequency matches the installation.
The inverter’s output can operate at a frequency of either 50 or 60 Hertz. This output frequency (and
the AC acceptance frequency) can be changed with the
Operating Frequency
menu item. This
requires high-level access. Due to the possibility of damage, access to this setting was restricted by
placing it in the
Grid Interface Protection
menu.
The installer password must be changed from the default in order to get access to this menu. Once
this password has been changed, the
Grid Interface Protection
menu can only be accessed by using
the installer password. This password can be changed in the system display.
See page 21 for more information on this selection in
which begin on page 76, for the location of the
Search
Operating Frequency
Grid Interface Protection
menu item.
. See the menu tables,
An automated search circuit is available to minimize the power draw when no loads are present.
When enabled, the inverter does not always deliver full output. The output is reduced to brief pulses
with a delay between them. These pulses are sent down the output lines to see if a resistance is
present. Basically, the pulses “search” for a load. If a load is detected on the output, the inverter’s
output increases to full voltage so that it can power the load. When the load is turned off, the inverter
“goes to sleep” and begins searching again.
Search mode sensitivity is adjusted with the
begin on page 76, for the location of this item. The sensitivity is adjusted in small increments which
are measured in fractions of one ampere.
28
Sensitivity
menu item. See the menu tables, which
900-0169-01-00 Rev A
Operation
NOTE:
setting, 30 increments, is approximately sufficient to detect the load of one compact fluorescent light
(CFL). A load which draws this amount or greater will “wake up” the inverter.
Search mode is ideal for use in small systems where it is critical to conserve battery capacity and avoid
idle draw or “ghost” loads.
To set up Search mode for use:
1.
2. Activate Search mode with the system display. The inverter should “sleep” with a flashing green STATUS
Increment sizes are difficult to define due to varying load characteristics. However, the default
Search mode is not particularly useful with loads requiring continuous power. (These loads include clocks,
answering machines, and similar devices.) “Sleep” operation with these loads is simply a power interruption
or nuisance shutdown.
Search mode may not be useful with loads that are critical or are intentionally operated a large portion of
the time even if they are not continuous. (These loads include computers and similar devices.) The inverter
may “sleep” so rarely that the mode has no benefit.
Some devices may not be easily detected by Search mode.
Search is inoperative if the
Turn off all loads.
INVERTER indicator. See page 16.
input mode is in use. See page 20 for more information on this mode.
UPS
3. Determine the smallest load that is to be used and turn it on.
4. If the load operates, the inverter is active and is producing power. No further adjustments are needed.
5. If the inverter does not produce power and continues to “sleep”, the sensitivity is set too high. Turn the load
off and lower the Sensitivity menu item. Turn on the load and test whether the inverter activates.
6. Repeat step 5 as needed until turning on the load also reliably activates the inverter.
The pulse duration and the delay both have a time period that is measured in AC cycles. These two
items,
Pulse Length
and
Pulse Spacing
, are adjustable in the same menu as
Sensitivity
. If
Sensitivity
does not achieve the desired results, it may be useful to perform similar adjustments on these items.
Input
When the input terminals are connected to a stable AC source, the FXR inverter will synchronize itself
with that source and use it as the primary source of AC power. Its transfer relay will engage, linking
the AC source directly with the inverter’s output. It can also use the source to charge batteries. (See
Battery Charging on page 33.)
The loads powered by the inverter
CAUTION: Equipment Damage
Current draw in excess of the transfer relay rating can damage the transfer relay. This
damage is not covered by warranty. Use protective devices of appropriate size.
The inverter has a single AC input. However, it has two sets of AC source settings. With an external transfer
switch, the inverter can be used on more than one AC source. It is common to use utility grid power and a
gas or diesel generator. Other combinations of AC sources are possible.
The inverter’s two input selections can be programmed for separate input modes. The selection (
) can be chosen in the
Gen
The interactions with AC input sources are controlled by the various input modes. The
900-0169-01-00 Rev A 29
Input Type
must not
exceed the size of the inverter’s transfer relay.
menu.
Grid Tied
Grid
mode
or
Operation
allows certain models to sell power using the input connection. The
to assist a smaller AC source. When
GridZero
page 25 for descriptions of these and other input modes.
mode is selected, the battery charger cannot be used. See
Support
mode can use battery power
AC Current Settings
The AC current settings,
Grid Input AC Limit
A
A
A
and
Gen Input AC Limit
, control the amount of current
that the inverter draws from the source. Adjust these settings to match the input circuit breakers.
The adjustment is meant to protect a generator or source that cannot supply enough current for both
charging and loads. If the combined charging and loads exceed the setting, the inverter will reduce its
charge rate and give priority to the loads. If the loads exceed this number on their own, the charge rate will
be reduced to zero.
The inverter’s battery charger and grid-interactive function have individual settings. However, the
settings can also limit the charging or selling current.
The
GridZero
input mode requires the inverter to use DC sources, limiting the amount of AC current used.
See page 23.
The
Support
The AC input current is used to power both loads and battery charging. The combined amount should not
input mode allows the inverter to support the AC source with battery power. See page 18.
exceed the size of the AC overcurrent device or AC source. These devices should be sized appropriately
during planning and installation of the inverter system.
If multiple parallel inverters are installed with an AC source of limited amperage, the total combined
amperage settings for all units must be less than the AC input circuit. The Configuration Wizard in the
MATE3 can perform this calculation. However, the inverters do not perform this calculation. If the
Configuration Wizard or similar tools are not used, divide the input size by the number of inverters and
assign an equal part of the amperage to each port.
AC Limit
AC Source Acceptance
The input source must meet the following specifications to be accepted. This is true in all modes
except
Grid Tied
Voltage (both input selections): 208 to 252 Vac
Frequency (both input selections): If the output frequency is set to 50 Hz (default), the input acceptance
range is 45 to 55 Hz. If output frequency is set to 60 Hz, the input range of acceptance is 55 to 65 Hz.
See the menu tables which begin on page 76 for programming information for these items.
:
When these conditions are met, the inverter will close its transfer relay and accept the input source.
This occurs after a delay which is specified below. If the conditions are not met, the inverter will not
accept the source. If it was previously accepted and then rejected, the inverter will open the relay and
return to inverting power from the batteries. This occurs after a specified transfer delay, which is an
adjustable menu item.
IMPORTANT:
The inverter’s output voltage can adjusted to a different nominal value for a particular region. (See
page 28.) If this occurs, the source acceptance range should be adjusted to match this nominal
value or the inverter may not accept the new source normally.
The voltage limits can be adjusted to allow (or exclude) a source with weak or irregular voltages.
These items are adjustable in the appropriate menu of the MATE3 (
30
Grid AC Input Mode and Limits
or
900-0169-01-00 Rev A
Operation
Gen AC Input Mode and Limits
effects to changing the range of allowed voltages.
Each of the AC input selections has a settable
allows an input source to stabilize before connection.
The default setting for the
The default setting for the
These items are adjustable in the appropriate menu of the MATE3 (
AC Input Mode and Limits
NOTES:
The
Grid Tied
settings instead. (See page 20 for more information.) The inverter may not accept AC power if it meets the
settings noted here but does not meet the
Certain input modes such as
conditions are met. (See page 22.)
Several items external to the inverter may prevent the inverter from accepting AC power even if electrical
conditions are met. Some examples are the
functions, all of which are operated by the MATE3 system display. (See page 52.) Another example is the
MATE3’s
input mode does not use these acceptance limits and uses the
AC INPUT
hot key menu, which can order all inverters to disconnect when set to
). The settings are titled
input is 0.2 minutes (12 seconds).
Grid
input is 0.5 minutes (30 seconds).
Gen
).
Grid Interface Protection
Mini Grid
may prevent the inverter from accepting AC power even if electrical
High Battery Transfer, Grid Usage Time
Voltage Limit Lower
Connect Delay
. This is intended as a warmup period which
Grid AC Input Mode and Limits
settings.
and
Grid Interface Protection
. There can be side
Upper
, or
Load Grid Transfer
Drop
.
or
Gen
Multiple Inverters
In a stacked system, whenever the master inverter senses acceptable input, it orders all other inverters
to transfer to the AC source. The other inverters do not use their own input readings to transfer. It is
expected that the AC source delivers input (in the appropriate phase) to all inverters.
A subphase master inverter may receive this command while not sensing acceptable input. It may have no
input, or it may sense incorrect input. The inverter will not transfer and will continue inverting (in the
correct phase). It will display a
If a slave inverter does not sense acceptable input, it will not transfer, but also will not invert. The slave will
have no output. It also will display a
In either case, this warning appears as an Event on the MATE3 system display.
Phase Loss
The FXR inverter’s stacking function includes the option called
selectable menu item is
Coordinated AC Connect/Disconnect
to deliver input (in the appropriate phase) to all inverters.
If the master or subphase master inverters do not sense an acceptable AC source, the entire system will
disconnect from the source.
None of the inverters will reconnect until the source is acceptable for the duration of the appropriate timer.
This may be either the
This function does not apply to slave inverters. A slave inverter with an unacceptable AC source will not
cause a general
Connect Delay
System Disconnect
warning (see page 63).
Phase Loss
or the
. The slave will still display a
warning.
Re-Connect Delay
Multi-Phase Coordination
. If selected, the AC source is
timer. See page 21.
Phase Loss
warning.
. The
required
A general
System Disconnect
See page 21 for more information on
stacking. See the menu tables beginning on page 76 for the default settings and ranges.
900-0169-01-00 Rev A 31
will not cause the inverters to show a
Multi-Phase Coordination
Phase Loss
warning.
. See page 43 for more information on
Operation
Generator Input
A generator should be sized to provide enough power for all inverters, both for loads and for battery
charging. The generator’s voltage and frequency must match the inverter’s acceptance settings.
It is usually recommended that the generator be sized at twice the wattage of the inverter system.
Many generators may not be able to maintain AC voltage or frequency for long periods of time if they
are loaded more than 80% of rated capacity.
The generator is required to have a stable output before its power is accepted by the inverter. Some
generators with less stable or uneven outputs may not be accepted. The use of the
Generator
mode may assist with this problem.
Transfer
The FXR inverter uses a transfer relay to alternate between the states of inverting and of accepting an
AC source. Until the relay energizes, the output terminals are electrically isolated from the input.
When it closes, the input and output terminals become electrically common. When the relay changes
states, the physical transfer delay is approximately 25 milliseconds.
input
CAUTION: Equipment Damage
Current draw in excess of the transfer relay rating can damage the transfer relay. This
damage is not covered by warranty. Use protective devices of appropriate size.
The relay contacts are limited to 30 amps per phase or leg. The continuous loads on that output
should never exceed this number. When connected to an AC source, the FXR inverter cannot limit the
load current. An overload condition is possible.
The inverter does not filter or actively condition the AC source. The voltage and power quality
received by the output loads is the same as that of the source. If the voltage or quality do not meet
the inverter’s input requirements, it will disconnect and return to the inverting mode.
NOTES
:
To ensure a smoother transition, it may be advisable to raise the inverter’s lower acceptance limit.
The default setting is 208 Vac. A higher setting will cause the inverter to transfer sooner in the event of a
quality problem.
If the AC source meets the inverter’s requirements but is irregular, any fluctuations will be transferred to the
loads. If the loads are sensitive, it may be necessary to improve the quality of the AC source.
The
Generator
so than other modes. This should be considered before using this mode with sensitive loads. (See page 18.)
input mode is intended to accept irregular or unfiltered AC sources and is more likely to do
If the charging function is turned off, the inverter will transfer power from the source but will not use it
to charge. If the inverting function is turned off, the inverter will transfer (“pass through”) the source
power when connected, but will not invert when the source is removed.
32
900-0169-01-00 Rev A
Operation
Battery Charging
IMPORTANT:
Battery charger settings need to be correct for a given battery type. Always follow battery
manufacturer recommendations. Making incorrect settings, or leaving them at factory default
settings, may cause the batteries to be undercharged or overcharged.
Charge Current
Batteries or battery banks usually have a recommended limit on the maximum current used for
charging. Often this is calculated as a percentage or fraction of the battery capacity, represented by
“C”. For example, C/5 would be a DC amperage figure that is 1/5 of the total amp-hours of the bank.
Any chargers must be set so that the peak charge current does not exceed the recommended battery
maximum. If multiple chargers are present (including other types of chargers besides the inverter),
this calculation must accommodate the total combined current. The FXR charger may need to be set
at less than maximum. The system display can be used to change charger settings.
IMPORTANT:
Although the recommended current is generally represented in DC amperes (Adc), the
AC Limit
DC current into a usable AC figure, divide the DC figure by the following number (based on
inverter voltage) and round up. The result can be used as a charger setting for the FXR inverter.
12-volt inverters: Divide by 20
24-volt inverters: Divide by 10
48-volt inverters: Divide by 5
Examples
1) Bank consists of 8 x L16 FLA batteries in series for a 48-volt system. Recommended
2) Bank consists of 12 x OutBack EnergyCell 200RE VRLA batteries in series/parallel for a
setting is measured in AC amperes (Aac), which use a different scale. To convert the
:
maximum charge current is 75 Adc. (75 ÷ 2.5 = 15 Aac)
24-volt system. Recommended maximum charge current is 90 Adc. (90 ÷ 10 = 9 Aac)
The maximum DC charge rate for FXR models is specified in Table 14 on page 67. The actual
AC Limit
setting is available in the
AC Input and Current Limit
menu of the MATE3 system display.
(See the menu tables which begin on page 76.) These numbers are also summarized in Table 3.
: This table does not match the calculations above due to other factors in charging.
NOTE
Charger
Charger
Table 3 Charge Currents for FXR Models
Model Maximum DC Output (sent to battery) Maximum AC Input (used from source)
FXR2012E 100 Adc 7 Aac
VFXR2612E 120 Adc 9 Aac
FXR2024E 55 Adc 7 Aac
VFXR3024E 80 Adc 10 Aac
FXR2348E 35 Adc 7 Aac
VFXR3048E 40 Adc 10 Aac
Charge Current for Multiple Inverters
If FXR inverters are stacked, the master inverter
Divide the total AC current by the number of chargers used and program the master with the result.
The master will operate all chargers with this setting to achieve the maximum total charge current.
The system display has a global
900-0169-01-00 Rev A
Charger Control
Charger AC Limit
setting is used by all other inverters.
command of On which enables all available chargers.
33
Operation
Limiting Charge Current (Multiple Inverters)
It is not advisable to set
Charger AC Limit
less than 6 Aac in a stacked system. The Power Save
function requires the master to activates the slave chargers in sequence only when the charge current
exceeds 5 Aac. If the setting is less than 6, Power Save will not activate any other chargers.
For more information on this function, see the Power Save section beginning on page 46.
In some systems, lower currents may be required due to battery bank size or other reasons. To achieve
lower currents, chargers can be individually set to
so that the master inverter does not activate them.
Off
For the location of the Charger Control command, see the menu tables beginning on page 76.
For more information on controlling the charger limits in a stacked system, see page 73.
Charge Cycle
The FXR inverter uses a “three-stage” battery charging process with Bulk, Absorption, and Float stages.
These stages follow a series of steps, which are shown on graphs and described beginning below. The
inverter’s factory default settings are intended for three-stage charging of lead-acid batteries.
Charging Graphs
Figure 6
Voltage
shows the progression of steps of the three-stage charging cycle.
Absorption
Set Point
No Charge
Bulk
Absorption
Silent
ReFloat
Float
Silent
ReFloat
Float
Silent
Refloat
Float
Set Point
Re-Float
Set Point
Time
Inverter now charging to a new set point
Inverter completed charging; the previous set point is no longer in use
Inverter has reached the charging set point
Figure 6 Charging Stages Over Time
Figure 7
shows the charge cycle used by the inverter when the
Float Time
This setting eliminates the Silent and Refloat steps. The charger remains in Float continuously.
The Float stage lasts until the AC source is removed.
Voltage
Absorption
Set Point
Float
Set Point
No Charge
Bulk Absorption Float
menu item is set to
No Charge (Source Removed)
24/7
.
Time
Inverter now charging to a new set point
Figure 7 Charging Stages Over Time (24/7)
34 900-0169-01-00 Rev A
Inverter has reached the charging set point
Operation
Advanced Battery Charging (ABC)
Advanced battery technologies such as lithium-ion and sodium-sulfur may require very different settings
from the inverter’s defaults or the three-stage cycle in general. The Charging Steps section describes the
individual selections and behavior. All charger settings are adjustable for different priorities. For example,
the Float voltage could be set higher than the Absorption voltage, or a step could be completely skipped.
Charging Steps
The following items describe the operation and intended use for each individual charging step as
shown in the graphs. Note that some charging cycles may not follow this exact sequence. These
include cycles which were previously interrupted, and also customized charging. Each step describes
how to defeat or customize the step if specialized charging (ABC) is required.
See page 37 for a description of multiple cycles when the charger is restarted after completion.
This page also describes multiple cycles when the charger is restarted after being interrupted.
For multiple inverters:
The charging of stacked inverters is synchronized and is governed by the master. The charger settings
of all other inverters are ignored. Slave and subphase master inverters use the master settings.
No Charging
If the inverter is not charging, several conditions may apply:
The unit is not connected to a qualified AC source. If a generator is present, it may not be running.
The unit is connected to an AC source but the charger has been turned off.
Bulk Stage
This is the first stage in the three-stage charge cycle. It is a constant-current stage which drives the
battery voltage up. This stage typically leaves the batteries at 75% to 90% of their capacity,
depending on the battery type, the exact charger setting, and other conditions.
Voltage Used:
Default Set Point
The initial DC current may be as high as the charger’s maximum current, depending on conditions.
The current will begin at a high level, but will tend to drop slightly as the voltage rises. This is not a
reduction in charging. It can be viewed as a wattage “tradeoff”. The actual kilowatts used by the
charger are shown in the
To skip this step:
through the normal three-stage cycle, but at a single voltage. Setting
charger to skip both the Bulk and Absorption stages and proceed directly to the constant-current
Refloat stage. This may not be desired if the intent is to include the Bulk stage but skip Absorption.
Absorb Voltage
(nominal voltage): 14.4 Vdc (12-volt), 28.8 Vdc (24-volt), 57.6 Vdc (48-volt)
Inverter
Setting
setting.
menu. The reading is usually consistent at this stage. (See page 55.)
Absorb Voltage
equal to
Float Voltage
causes the charger to proceed
Absorb Time
to 0 causes the
Absorption Stage
This is the second stage of charging. It is a constant-voltage stage. Current varies as needed to
maintain the voltage, but will typically decrease to a very low number over time. This leaves the
batteries at essentially 100% of capacity.
Voltage Used:
page 42.) For the three-stage cycle to proceed normally, this setting should be kept higher than the
Float Voltage
900-0169-01-00 Rev A 35
Absorb Voltage
and
Re-Bulk Voltage
setting. This setting is also used by Offset when in this stage. (See
settings.
Operation
Time limit:
retained time from a previous charge cycle. The timer counts down from the inception of the
Absorption stage until it reaches zero. The time remaining can be viewed in the system display.
The Absorption timer does not reset to its maximum amount, or to zero, when AC power is
disconnected or reconnected. It only goes to zero if the timer runs out during the Absorption stage, or
if an external STOP BULK command is sent. In all other cases it retains any remaining time.
Absorb Time
setting. The charger does not necessarily run through its full duration if it
Absorb Time
Voltage
To skip this step:
time in Absorption once the Bulk stage is complete. Setting
charger to skip both the Bulk and Absorption stages and proceed directly to the constant-current
Refloat stage. This may not be desired if the intent is to skip Absorption but retain the Bulk stage.
is reset to its maximum amount whenever the battery voltage decreases to the
setting. The reset occurs immediately, regardless of the time spent below this voltage.
Setting
Absorb Time
to a very short duration causes the charger to spend minimal
Absorb Time
to zero will cause the
Re-Bulk
Silent
This is not a charging stage, but a quiescent period between stages. The inverter remains on the AC
source, but the charger is inactive. It enters this condition upon completing a timed stage such as
Absorption, Float, or Equalize.
In Silent, the batteries are not in significant use by the inverter, but they are also not being charged.
The battery voltage will naturally decrease when not maintained by another means such as a
renewable source.
The term “Silent” is also used in an unrelated context regarding Power Save levels. See page 46.
Voltage Used:
charger becomes active again.
Default Set Point
To skip this step:
it does not proceed through the Silent, Bulk, Absorption, or Float timer steps.
Re-Float Voltage
(nominal voltage): 12.5 Vdc (12-volt), 25.0 Vdc (24-volt), 50.0 Vdc (48-volt)
Setting
setting. When the battery voltage decreases to this point, the
Float Time
to
makes the charger remain in Float continuously so that
24/7
Float Stage
This is the third stage of charging. It is sometimes known as maintenance charging. Float stage
balances the batteries’ tendency to self-discharge (as well as balancing the draw of any other DC
loads). It maintains the batteries at 100% of capacity.
Voltage Used:
42.) For the charger to work normally, this setting needs to be higher than the
Default Set Point
The charger may perform two functions during Float. Both are called
They are defined here as Refloat and Float.
Float Voltage
(nominal voltage): 13.6 Vdc (12-volt), 27.2 Vdc (24-volt), 54.4 Vdc (48-volt)
Refloat
Refloat is a constant-current function. The initial DC current may be as high as the charger’s maximum
current, depending on conditions. This stage is similar to Bulk, except that the charger uses the
Voltage
setting as noted above. The charger delivers current until the batteries reach this value.
Float
Float is a constant-voltage function. The current varies as needed to maintain
typically drops to a low number. This stage is similar to Absorption, except that the voltage is different.
36 900-0169-01-00 Rev A
setting. This setting is also used by Offset when in this stage. (See page
Re-Float Voltage
in the system display.
Float
Float Voltage
setting.
Float
, but
Operation
Time limit:
is not still in progress.) The Float timer is reset to its maximum amount whenever the batteries
decrease to the
Float Time
Re-Float Voltage
setting. The charger will go Silent once the timer has expired (if another stage
setting.
: The Float timer begins running any time the battery voltage exceeds the
NOTE
point. This usually means that it begins running during the Bulk stage, once the battery voltage rises
above that level. Often the timer will expire before the bulk and absorption stages are complete. (This
will occur if the
will not enter Refloat or Float but will go directly to Silent. The charger only spends time in Float stage
if the timer is still running.
To skip this step:
soon as the absorption stage is complete. The inverter will perform neither the constant-current
Refloat nor the constant-voltage Float.
Setting
normal three-stage cycle, but at a single voltage.
NOTE:
timer no longer applies. (The charger also skips Bulk, Absorption, and Silent.) However, the charger can
begin a single three-stage charge if the criteria are met, after which it will return to continuous Float.
Float Voltage
Setting
Float Time
Decreasing the
Float Time
setting is less than the total of the bulk and absorption stages.) The charger
Float Time
equal to the
to 24/7 causes the charger remain in Float continuously so that the Float
Absorb Voltage
setting to zero causes the inverter to enter Silent as
level causes the charger to proceed through the
Float Voltage
set
Silent
Following the expiration of the Float timer, the unit enters (or re-enters) the Silent stage. The unit
remains connected to the AC source, but the charger is inactive. The unit will continue cycling
between Float and Silent until the AC source is lost or a new charge begins.
New Charging Cycle
If the AC source is lost or disconnected, the unit will return to inverting mode if enabled. The battery
voltage will begin to decrease due to loads or natural loss. When the AC source is restored, the
inverter will return to the charging cycle.
Re-Bulk
If the battery voltage decreases due to discharge, the inverter will restart the cycle as soon as the AC
source is available, beginning at Bulk stage.
Voltage Used:
point, the charger will not enter the Bulk stage and will return to its previous stage.
Default Set Point
Re-Bulk Voltage
(nominal voltage): 12.0 Vdc (12-volt), 24.0 Vdc (24-volt), 48.0 Vdc (48-volt)
setting. If the battery voltage does not decrease to the Re-Bulk
Absorption Timer
Time limit:
decreases to the
spent below this voltage.
If the battery voltage does not decrease to the Re-Bulk point, the
will retain any remaining time from the previous cycle. The Absorption stage will only last for the
duration of the remaining time.
The remaining charging steps proceed as described on the previous pages.
Absorb Time
Re-Bulk Voltage
setting. This is reset to its maximum amount whenever the battery voltage
setting. The reset occurs immediately, regardless of the duration
Absorb Time
setting will not reset. It
900-0169-01-00 Rev A 37
Operation
y
Voltage
Absorption
Set Point
Float
Set Point
Re-Float
Set Point
Absorption
Absorption
timer runs
Silent
Refloat
Float timer
Cycle 1
resets
Time
Inverter now charging to a new set point
Inverter has reached the charging set point
Figure 8 Repeated Charging (1st and 2nd Cycles)
Example of Multiple Cycles
C
cle 2
AC Loss
Float
Float timer runs (part)
Inverter completed charging; the previous set point is no longer in use
Inverter waiting to charge when AC restored; the previous set point is still in use
AC Loss
Refloat
Float
Float timer runs
Silent
In Figure 8 (Cycle 1), the charger initially completes Absorption. When the Absorption timer expires, the
charger goes Silent until battery voltage decreases to the
Re-Float
setting. The Float timer is reset to its
maximum. The charger proceeds through Refloat and Float until it is interrupted by a loss of AC power.
Cycle 2 begins when the AC source is restored. During the AC loss, the battery voltage did not decrease to
the
Re-Float
setting, so
Float Time
retains the remainder of the previous cycle. The charger returns to
Refloat and proceeds through the Float stage. Cycle 2 completes the Float stage when its timer expires. It
then goes Silent.
Note that in Cycle 1,
Absorb Time
had expired. It was not reset afterward and retained a “remaining run
time” of zero. The Bulk and Absorb stages do not occur on subsequent cycles until the timer reads
something other than zero.
This graph is continued in Figure 9. During the Silent period AC is lost again. The battery voltage decreases
until it reaches the Re-Bulk set point. This causes the charger to prepare a new three-stage cycle from the
beginning, but it cannot do so until the AC source is restored.
38 900-0169-01-00 Rev A
C
y
k
k
y
cle 3
Cycle 4
C
Operation
cle 5
AC Loss
Absorption
Set Point
Float
Set Point
Re-Bul
Set Point
Absorption
timer resets
Inverter now charging to a new set point
Inverter has reached the charging set point
Bulk
Absorption
timer runs
Abs.
(part)
AC Loss
AC Loss
Absorption
Bulk
Absorption
timer runs
(remaining time)
Inverter completed charging; the previous set point is no longer in use
Inverter waiting to charge when AC restored; the previous set point is still in use
Inverter waiting to charge when AC restored; a new set point is in use
Silent
Absorption
timer
resets
Bul
Absorption
Absorption
timer runs
(complete)
Figure 9 Repeated Charging (3rd, 4th, and 5th Cycles)
Prior to the beginning of Cycle 3, the AC source was lost. The battery voltage decreased below the level of
the
Re-Bulk
set point. Whenever this occurs, the Absorption timer resets to its maximum amount.
Silent
In Figure 9, Cycle 3 begins when the AC source is restored again. The charger begins a new cycle by
entering Bulk stage. When it enters Absorption, the timer runs until it is interrupted by a loss of AC power.
Following Cycle 3, the voltage does not decrease below
Re-Bulk
. The Absorption timer retains the
remaining time from Cycle 3.
Cycle 4 begins when the AC source is restored again. The charger enters Bulk stage and proceeds to
Absorption. This stage does not last for the full duration of the
Absorb Time
setting. The timer uses up the
remaining time from Cycle 3. Absorption ends when the timer expires.
In this example, the duration was also longer than the
Float Time
running near the beginning of Cycle 3 and also Cycle 4 (when the batteries exceeded the
setting), the
Float Time
has also expired. The charger does not enter Refloat or Float and goes Silent.
During the Silent period, AC is lost again. The battery voltage decreases until it reaches the
setting. Because the Float timer began
Float Voltage
Re-Bulk
point, prompting a new charge cycle. The Absorption timer resets to its maximum amount.
When Cycle 5 begins, the charger proceeds through the Bulk stage and then the Absorption stage. At the
end of Cycle 5, the
Float Time
has expired, so the charger goes Silent.
set
900-0169-01-00 Rev A 39
Operation
Equalization
Equalization is a controlled overcharge that is part of regular battery maintenance. Equalization
brings the batteries to a much higher voltage than usual and maintains this high voltage for a period
of time. This has the result of removing inert lead sulfate compounds from the battery plates. It also
reduces stratification by circulating the electrolyte.
Equalization follows the same pattern as standard three-stage charging, as shown in the figures on
page 34. However, instead of the Absorption voltage and time set points, it is controlled by the
Equalize Voltage
and
Equalize Time
settings in the MATE3.
The FXR inverter can perform Offset when equalizing. (See page 42.)
Equalize Voltage
is also the
reference voltage for Offset during equalization.
This process must be started manually using the system display. The inverter cannot be programmed
for automatic battery equalization. This is a safety measure.
Equalization is normally performed only on flooded lead-acid batteries. The schedule for equalization
varies with battery use and type, but it is usually performed every few months. If performed correctly,
this process can extend battery life by a considerable amount.
Equalization is not normally performed on nickel-technology batteries or any sort of sealed battery.
CAUTION: Battery Damage
Do not equalize OutBack EnergyCell batteries of any model.
Do not equalize any sealed battery types (VRLA, AGM, Gel, or other) unless
approved by the manufacturer. Some batteries may suffer severe damage
from equalization.
Contact the battery manufacturer for recommendations on equalization
voltage, duration, schedule, and/or advisability. Always follow
manufacturer recommendations for equalization.
40 900-0169-01-00 Rev A
Operation
Battery Temperature Compensation
Battery performance will change when the temperature varies above or below room temperature
(77°F or 25°C). Temperature compensation is a process that adjusts battery charging to correct for
these changes.
When a battery is cooler than room temperature, its internal resistance goes up and the voltage
changes more quickly. This makes it easier for the charger to reach its voltage set points. However,
while accomplishing this process, it will not deliver all the current that the battery requires. As a result,
the battery will tend to be undercharged.
Conversely, when a battery is warmer than room temperature, its internal resistance goes down and
the voltage changes more slowly. This makes it harder for the charger to reach its voltage set points.
It will continue to deliver energy as time passes until the charging set points are reached. However,
this tends to be far more than the battery requires, meaning it will tend to be overcharged.
The FXR inverter, when equipped with the Remote Temperature Sensor (RTS) will compensate for
changes in temperature. The RTS is attached to a single battery near the center of the bank, to achieve
a representative temperature. The FXR inverter has a designated port for installing the RTS.
If installed in a multiple-inverter system, only a single RTS is necessary. It must be plugged into the
master inverter and will automatically control the charging of all slaves and all charge controllers.
When charging, an inverter system with an RTS will adjust the charging voltage inversely with changes
in temperature. It will
increase
battery cell. Similarly, it will
This setting affects the
Voltage
set points are not temperature compensated. The
Absorption, Float
the charge voltage by 5 mV for every decrease of 1 degree Celsius per
decrease
the voltage 5 mV for every increase of 1°C per cell.
, and
Equalization
set points. The
Equalization
set points are not
Sell Voltage
and
Re-Float
compensated in OutBack charge controllers.
In a 12 Vdc system (6 cells, 2 volts each), this means 0.03 volts per degree Celsius above or below 25°C.
Maximum compensation is ± 0.6 Vdc.
In a 24 Vdc system (12 cells, 2 volts each), this means 0.06 volts per degree Celsius above or below 25°C.
Maximum compensation is ± 1.2 Vdc.
In a 48 Vdc system (24 cells, 2 volts each), this means 0.12 volts per degree Celsius above or below 25°C.
Maximum compensation is ± 2.4 Vdc.
EXAMPLES:
A 12 Vdc system with batteries at 10°C will compensate its charging to 0.45 Vdc
A 24 Vdc system with batteries at 35°C will compensate its charging to 0.6 Vdc
A 48 Vdc system with batteries at 15°C will compensate its charging to 1.2 Vdc
A 48 Vdc system with batteries at 40°C will compensate its charging to 1.8 Vdc
lower
higher
lower
than the set points.
higher
than the set points.
than the set points.
than the set points.
Slope
Some batteries require different amounts of compensation. The OutBack FLEXmax Extreme charge
controller has an adjustable rate of compensation (“slope”) and is not limited to 5 mV. The FLEXmax
Extreme can be networked with the inverter with the HUB Communications Manager. If this is done,
the inverter can import the slope setting from the FLEXmax Extreme charge controller.
:
NOTE
Temperature compensation only applies to the battery charging function. Other set points in the
inverter, such as the AUX functions, are not compensated for temperature.
900-0169-01-00 Rev A 41
Operation
Offset
Offset is an automatic operation which occurs in certain conditions. It is not a programmable function.
This operation uses excess battery energy to power the loads when an AC source is present. The
system can take advantage of renewable energy sources, “offsetting” dependence on the AC source.
The battery voltage increases as a renewable energy source charges the batteries. When the voltage
exceeds a designated reference voltage, the FXR inverter begins inverting. It draws power from the
batteries (discharging them) and uses that power to offset the use of the AC source.
The FXR inverter uses excess DC energy for offset under the following rules:
If the load demand is higher than the inverted power, the inverter’s use of the AC source is reduced. The
amount of inverted power has “offset” the same amount of demand on the AC source. (This is sometimes
known as “selling to the loads”.)
If the excess DC energy (and inverted power) is equal or greater than the load demand, and the inverter is in
the
Grid Tied
of the
input mode, the inverter will sell the additional power to the utility grid. This is the key priority
Grid Tied
mode.
The FXR inverter uses several set points as reference voltages for the Offset operation, particularly the
FXR battery charger settings.
The charger settings
are all used as reference voltages. Normally the charger regulates to these set points by adding power to
the batteries. Offsetting does the opposite; it uses the same set points but regulates the voltage by
removing power from the batteries.
If none of the battery charger’s timers are active, the reference voltage is
menu. This is true in any input mode where Offset is used, not just the
The
GridZero
mode only uses a single reference voltage for Offset, the
Absorb Voltage, Float Voltage
, and
Equalize Voltage
(as shown in the system display)
Sell Voltage
Grid Tied
DoD Volts
in the
input mode.
setting.
Grid-Tie Sell
NOTES
:
The
Offset Enable
Offset operation is available in the
Offset operation is available in the
priority is to avoid grid use.
Offset operation is not available in the
menu item must be set to Y (yes) for Offset to work.
Support, Grid Tied
Mini Grid
, and
GridZero
mode. However, it may not be used often since the
Generator, UPS,
and
Backup
modes.
input modes.
Table 4 Offset Interaction with AC Source
Mode Excess DC ≥ loads Excess DC < loads
Does not function
Generator
Support
Grid Tied
UPS
Backup
Mini Grid
GridZero
Offsets load use, but also uses DC to support the AC source based on
Sells excess to AC source (grid); remains connected Offsets loads with whatever power is available
Does not function
Does not function
Offsets loads with whatever power is available; inapplicable if disconnected from utility grid
Offsets load use, but only according to the
DoD Volts
setting
Support
mode settings
Mini Grid
42 900-0169-01-00 Rev A
Operation
Multiple-Inverter Installations (Stacking)
Multiple inverters in a single system can support larger loads than a single inverter. Installing inverters
in this configuration is called “stacking”. Stacking refers to how inverters are wired within the system
and programmed to coordinate activity. Stacking allows inverters to work together as one system.
Each inverter is programmed to power an individual phase of the system and to operate at certain times.
This order is assigned using a system display such as the OutBack MATE3. FXR stacking includes
“parallel” and “three-phase” configurations.
Each inverter needs to be assigned a status — “master” or “slave”. The master provides the primary (L1)
output. “Subphase” masters provide the output for other phases in three-phase systems. Slave
inverters provide assistance when a master on any output cannot power the loads alone. See the FXR
Series Inverter/Charger Installation Manual for more information.
Stacking requires an OutBack HUB10.3 Communications Manager and CAT5 non-crossover cable. The
HUB10.3 has designated assignments for each of its ports. The inverter on each port is programmed with
a status and stacking value. There are usually other specialized instructions during installation.
An AC source for a three-phase system should provide input to all inverters on all phases. A slave
inverter will give a
If
Coordinated AC Connect/Disconnect
Phase Loss
warning if it is not supplied. (See pages 31 and 63.)
is enabled, the source
provide input to all phases. If any
must
phase is not supplied, all inverters will disconnect. See pages 21 and 31 for more information.
HUB10.3
Communications
Manager
Additional Ports
Figure 10 OutBack HUB10.3 and MATE3
IMPORTANT:
The master inverter must always be connected to Port 1 on the HUB product. Connecting it
elsewhere, or connecting a slave to Port 1, will result in backfeed or output voltage errors
which will shut the system down immediately.
All stacked FXR inverters must have the same firmware revision. If inverters are stacked with
different firmware revisions, any unit with a revision different from the master will not
function. The MATE3 will display the following message:
An inverter firmware mismatch has been detected. Inverters X, Y, Z 3 are disabled. Visit
www.outbackpower.com for current inverter firmware.
FXR-class inverters cannot be stacked with FX-class inverters. If more than one model class
or series is stacked, any inverter different from the master will not invert or connect to an AC
source. The MATE3 will register an Event in the log. It will display the following message:
A model mismatch has been detected. Inverters are incompatible. Inverters X, Y, Z 3 are
disabled. Match all models before proceeding.
Installing multiple inverters without stacking them (or stacking them incorrectly) will result
in similar errors and shutdown.
Although stacking allows greater capacity, the loads, wiring, and overcurrent devices must
still be sized appropriately. Additional terminations or bus bars may be required.
Overloading may cause circuit breakers to open or inverters to shut down.
3
The port designations for the mismatched inverters are listed here.
900-0169-01-00 Rev A
MATE
MATE3
System
Display
43
Operation
Stacking Configurations
Each inverter must be assigned a particular mode in the
Stack Mode
menu. In the figures for each
configuration below, the mode names are shown next to each inverter.
For example, Figure 11 shows
inverters are designated
Slave
Master
. Figure 12 and Figure 13 show
for the first inverter in a parallel-stacked system. The remaining
Master
and
designations for
Slave
Phases A, B, and C in three-phase systems.
Parallel Stacking (Dual-Stack and Larger)
In parallel stacking, two or more inverters are stacked to create a single, common set of AC outputs.
All inverters share a common input (AC source). The inverters run loads on a common output bus. The master
inverter provides the primary output. The slaves are connected to the same output and assist the master.
The slave outputs are controlled directly by the master and cannot operate independently.
Slave inverters can go into Power Save mode when not in use. The master will activate individual slaves
based on load demand. This reduces idle power consumption and improves system efficiency.
Up to ten inverters may be installed in a parallel arrangement.
LOAD PANEL
2.0 kVA 120
Master Slave Slave
2.0 kVA 120 Vac
2.0 kVA 120 Vac
6.0 kVA
120 Vac
Figure 11 Example of Parallel Stacking Arrangement (Three Inverters)
Three-Phase Stacking
In three-phase stacking, inverters create three separate 230 Vac4 output legs in a wye configuration.
The three legs operate independently of each other. The output of each inverter is 120° out of phase
from the others. Any two outputs produce 400 Vac between them. The outputs can be used to power
three-phase loads when all inverters work together.
Up to nine inverters, three per phase, may be installed in a three-phase arrangement. On the next page,
Figure 12 shows one inverter per phase. Figure 13 shows three inverters per phase.
All inverters must be the same model.
4
Output voltages may vary with regional voltage standards.
44 900-0169-01-00 Rev A
Operation
LOAD PANEL
2.0 kVA 230 Vac
2.0 kVA
230 Vac
B Phase Master
2.0 kVA 230 Vac
2.0 kVA
230 Vac
OR
C Phase Master
2.0 kVA 230 Vac
2.0 kVA
230 Vac
Figure 12 Example of Three-Phase Stacking Arrangement (Three Inverters)
LOAD PANEL
Master
2.0 kVA 230 Vac
Slave
2.0 kVA 230 Vac
2.0 kVA 230 Vac
Slave
6.0 kVA
230 Vac
6.0 kVA
400 Vac
B Phase
2.0 kVA 230 Vac
C Phase
Master
2.0 kVA 230 Vac
2.0 kVA 230 Vac
2.0 kVA 230 Vac
Slave
Slave
Slave
2.0 kVA 230 Vac
Slave
2.0 kVA 230 Vac
6.0 kVA
230 Vac
6.0 kVA
230 Vac
Figure 13 Example of Three-Phase Stacking Arrangement (Nine Inverters)
OR
18.0 kVA
400 Vac
900-0169-01-00 Rev A 45
Operation
Power Save
Each FXR inverter consumes 34 watts of idle power while it remains on, even if it is not actively
inverting or charging. The Power Save function allows the option to put part of a parallel system into
a quiescent state known as Silent mode. This mode minimizes the idle consumption. The inverters
will come on again when the loads require power. (The term “Silent” is also used in an unrelated
context during battery charging. See page 36.)
When the load increases by 6 Aac, the master inverter activates an additional slave inverter for assistance.
When the load decreases to 2 Aac or less (as detected by the master), the slave is deactivated and returns to
Silent mode. Each additional load increments of 6 Aac activates an additional slave.
The order in which slaves activate (or return to Silent mode) is controlled by programming in the system
display. The inverters are given a “rank”, or level number. Lower rank numbers activate when lesser loads
are applied. Higher ranks only activate when the load increases to a high level.
The lowest-ranked inverters do not enter Silent mode. This includes the master and subphase masters.
They remain active unless specifically turned off. These inverters can still enter Search mode.
Minimal load
Increasing load
High load
Maximum load
Master
On
On
On
On
Slave 1 Slave 3Slave 2
Off
On
On
On
Off Off
Off Off
On Off
On On
Figure 14 Power Save Levels and Loads
The actual watt and ampere thresholds for activating each model are depicted on the following pages.
IMPORTANT:
t is highly recommended to use the MATE3 Configuration Wizard to set up this function. It is
I
essential to set the slave Power Save Levels in sequential order. Failure to set them up correctly will
cause erratic system performance. The Configuration Wizard automatically programs the correct
priorities. (See the MATE3 owner’s manual.)
To set these items manually without the Configuration Wizard:
In the MATE3 system display, the
assign ranks to the inverter on each port. The screen reads
Save Level
, depending on the inverter’s stacking designation.
The stacking designations also control which ports are used on the HUB10.3 communications
manager. The master inverter must be plugged into port 1. In parallel stacking, any slave inverter can
use any other port, beginning with port 2. In three-phase stacking, the port assignments are very
specific, as illustrated in the HUB10.3 literature.
46
Power Save Ranking
screen uses
Power Save Level
Master Power Save Level
selections to
or
Slave Power
900-0169-01-00 Rev A
Operation
Master Power Save Level
rank numbers is 0 to 10. The default value is 0. The master is normally left at this value.
The Master Power Save Level function is used for the master inverter on Port 1. It is also used for any
subphase masters in a three-phase system. The ranking of a subphase master is treated the same as the
master. If the master is set at 0, subphase masters should also be 0.
appears on an inverter which is set as master (the default setting). The range of
Slave Power Save Level
(The default value for all ports is 1.)
When subphase master inverters are in use, the slaves for the additional phases are ranked identically to
the slaves on the master phase. If the master inverter has two slaves ranked 1 and 2, any other phases
should also rank their slaves 1 and 2. Slaves on multiple phases should not be ranked sequentially
(1 through 6 and so on). This would cause delays in output.
appears on an inverter which is set as slave. The range of rank numbers is 1 to 10.
The ranks are prioritized so that lower-numbered ranks turn on sooner and higher ranks turn on later.
The lowest-ranked inverter does not go silent and remains on unless ordered otherwise. The
lowest-ranked inverter is expected to be the master. The priorities are the same across both screens.
If Port 1 (master) is set at 0 and Port 2 (slave) is set at 1, the slave will turn on later. Since the
Master
item is the only one that goes to 0, it is easy to ensure that all slave inverters go silent.
Subphase master inverters are set at 0 because all phases must have at least one inverter that does not
enter Silent mode. The slaves for each phase are set identically to each other so that all phases receive
additional power at the same time as needed.
IMPORTANT:
Set the master (or subphase) rank at 0 and arrange the slave ranks in order (1, 2, 3, 4, etc.).
Another order may defeat the purpose of Power Save mode. Leaving the master at 0 makes
power available from the master; the other inverters should not be active. If a slave is ranked
lower (prioritized higher) than the master, that slave will not go silent.
Disregard this rule if the installation requires some slaves to be continuously active.
NOTE:
IMPORTANT:
Do not give slave inverters the same rank numbers. If, for example, multiple slaves were all
ranked at 1, they would all come on at the same time. Once they came on, the divided load
would cause the master to detect a minimal load on its output, so it would shut off all the slaves,
at which point the master would read a high load again. This could quickly escalate into a rapid
on/off cycling of inverters and could cause long-term system problems.
: Power Save is used by the battery chargers of stacked systems with slave inverters. Not all
NOTE
chargers are activated immediately. Initially the master is the only active charger. The batteries will
absorb current up to the maximum for all chargers. When the batteries (and the master) draw more
than 6 Aac, the master will turn on the first slave charger. The batteries will absorb that additional
current and more. The master will then turn on more slaves until all active chargers are operating.
If the master
Charger AC Limit
is reduced below 6, it will not turn on any slaves and will remain the
only charger. For more information on charging with stacked inverters, see page 33. If other
adjustments are required to the maximum charge rate, see page 73.
Figure 15 shows a system of four FXR2012E inverters (the master and three slaves). These inverters in
a parallel system with a common load bus.
The captions at the top indicate the ranking of each unit.
The captions also show the port assignments on the communications manager (1 through 4).
The notations at the bottom show how the units are activated in sequence as loads of 6 Aac are applied.
900-0169-01-00 Rev A
47
Operation
f
p
Master
Port 1
Master Power Save = 0
<6 Aac On Off Off Off
6 Aac On On Off Off
12 Aac On On On Off
18 Aac On On On On
8 Aac On On On Of
Slave 1 Slave 3 Slave 2
Port 2
Slave Power Save = 1
Port 3
Slave Power Save = 2
Port 4
Slave Power Save = 3
Figure 15 Power Save Priority (Parallel)
The fourth line shows that loads of 18 Aac or more (approximately 4 to 4.5 kW) are present on the system.
This load causes all four inverters to be activated.
The last line shows that the loads are reduced to 8 Aac. Since this load is distributed among four inverters,
the master reads 2 Aac, the lower threshold for Power Save. This causes one slave to enter Silent mode. The
8 Aac are distributed among the remaining three inverters. If the loads decreased to 6 Aac, a second slave
would go silent.
Figure 16 shows a system of six FXR2012E inverters. In this example the inverters have been stacked in
a three-phase system. The master inverter is on the Phase A output while subphase masters are on
Phase B and Phase C. Each master has one slave inverter.
The captions at the top indicate the ranking of each inverter.
The captions also show the port assignments on the communications manager. The Phase A inverters use
ports 1 and 2 However, the communications manager requires the Phase B and C inverters to use ports 4
and 5 and ports 7 and 8 respectively.
The notations at the bottom show how the slaves are activated as loads are applied. The load on Phase C is
not equal to the others, so the slave is not activated at the same time.
Phase A Phase B Phase C
Master
Port 1
Master Power
Save = 0
Load (A) Load (B) Load (C)
5 Aac On Off 5 Aac On Off 5 Aac On Off
6 Aac On On 6 Aac On On 5 Aac On Off
12 Aac On On 8 Aac On On 10 Aac On On
12 Aac On On 4 Aac On Off 10 Aac On On
Slave 1 Slave 1Sub
Port 2
Slave Power
Save = 1
hase Master
Port 4
Master Power
Save = 0
Port 5
Slave Power
Save = 1
Subphase Master Slave 1
Port 7
Master Power
Save = 0
Port 8
Slave Power
Save = 1
Figure 16 Power Save Priority (Three-Phase)
The third line shows that loads of varying size on all phases have caused all inverters to be activated.
The last line shows that the load on Phase B is reduced to 4 Aac. This causes the slave to go silent. The other
phases are not affected.
48 900-0169-01-00 Rev A
Operation
Auxiliary Terminals
The FXR inverter has a 12V AUX output which can respond to different criteria and control many
operations. These terminals provide a 12 Vdc output that can deliver up to 0.7 Adc.
The AUX output has three states: continuous
to be activated using the automatic auxiliary functions. (All functions are defaulted to
, continuous On, and
Off
, which allows that output
Auto
Auto
.) These
items are based in the inverter and accessed using the system display. The system display and other
devices also have programming, such as AGS, that can control the AUX outputs. To avoid conflicts,
the output should be turned
when the AGS function is active. (See page 52.)
Off
For the FXR automatic functions, typical applications include signaling a generator to start, sending a
fault alarm signal, or running a small fan to ventilate the batteries. When considering these
applications, plan for both connection requirements and programming with the system display.
The AUX terminals have a series of set points which are used by various functions. Not all points are
used by all functions. Each mode description (below) will show the set points used by that function.
Low DC voltage settings
High DC voltage settings
On delay settings, in increments of 0.1 minutes
Off delay settings, in increments of 0.1 minutes
These settings are not temperature compensated. Compensation is only used for inverter battery charging.
There are nine functions, each geared toward a different application. These functions are summarized
in Table 5 on page 51.
NOTE:
The AUX output is defaulted to
Vent Fan.
A sealed FXR inverter with the Turbo Fan is required
to use the AUX output for fan control. In a single-inverter system, no other functions can be used.
Load Shed
periods to conserve remaining battery power.
When battery voltage rises above a settable high voltage level, the AUX output is activated after a
Load Shed will also turn off when the inverter enters a high-temperature condition or when the AC
Load Shed will also turn off if the input current exceeds the Input AC Limit setting while the inverter is
Settable parameters include:
Gen Alert
functionality. (The generator recharges batteries using the inverter’s battery charger.)
The AUX output will activate to start the generator when the battery voltage falls to a low set point for a
900-0169-01-00 Rev A 49
can perform load management. It is intended to turn off designated loads during low battery
settable delay. The AUX output is used to energize a larger external relay (normally open) which is
connected to non-vital loads. The AUX output will be deactivated once the battery voltage falls below a
low voltage setting for a settable delay period.
output voltage drops below a specific AC voltage for more than 3 seconds. This voltage limit is 15 volts
below the setting of the inverter’s output voltage. For the inverter’s default output voltage of 120 Vac,
the limit is 105 Vac. (See the menu tables beginning on page 76.) The limit is not otherwise settable.
using an AC source.
Low and high DC voltage
On and off delay
is used as a controller for an AC generator with a remote start feature, although it has limited
settable delay. The AUX output is deactivated, shutting off the generator, once the battery voltage rises
to a high voltage setting for a settable delay period.
Operation
Settable Gen Alert parameters include:
Low and high DC voltage
On and off delay
Gen Alert control logic is located in the inverter. It has the advantage of functioning when the system
display is removed. However, it may not completely charge the batteries and does not have all the
advantages of the Advanced Generator Start (AGS) function that is found in the system display. For
many users, the AGS function may prove more useful than Gen Alert. Gen Alert, however, could be
used as a literal “Generator Alert”, a signal to the user to manually start a generator.
activates the AUX output when the inverter shuts down due to an error condition. (See page 62). It
Fault
can activate a light or alarm to show that the inverter has failed. With the appropriate devices, it could send
an alarm signal through a radio, pager, or telephone dialer.
This function does not have settable parameters.
Vent Fan
activates the AUX output in response to a high DC (battery) voltage set point. It can run a small
fan to ventilate the battery compartment to eliminate gases that result from battery charging. (This is
illustrated in the FXR Series Inverter/Charger Installation Manual.) When the voltage falls below this set point
for a settable delay period, the AUX output turns off. This is the default selection.
Settable parameters include:
High DC voltage
Off delay
Cool Fan
activates the AUX output when the inverter reaches a high internal temperature. It is intended to
trigger a small external fan for additional cooling. See the Warning Troubleshooting table on page 63 for a
description of the fan criteria.
This function does not have settable parameters.
DC Divert
activates the AUX output to divert (or “dump”) excess renewable energy to a DC load, such as a
resistor, a heater, or a fuel cell. This prevents overcharging of the batteries. This function can serve as rough
charge regulation for an external charging source.
When battery voltage rises above a settable high voltage level, the AUX output is activated after a
settable delay. The AUX output controls a larger, external relay. When energized, the relay allows current
to flow from the batteries to a dedicated DC load. (This is illustrated in the FXR Series Inverter/Charger
Installation Manual.) The resistor or load must be sized to dissipate all of the energy from the renewable
source if necessary. Diversion will turn off following a delay when a low DC voltage setting is reached.
Settable parameters include:
Low and high DC voltage
On and off delay
GT Limits activates the AUX output as an alert that the utility grid does not meet Grid Interface Protection
parameters for the grid-interactive function. (See page 20). It can activate a light or alarm to show that the
grid-interactive function has shut down and that there may be problems with the grid. The AUX output will
cycle on and off if grid parameters are met and the reconnection timer is counting down.
This function does not have settable parameters other than those of the Grid Interface Protection menu.
Source Status
activates the AUX output whenever the inverter accepts an AC source. It can activate a light
or alarm to show that the utility grid is present or that a generator has started. Alternately, it could be used
to show that the source has disconnected.
This function does not have settable parameters.
AC Divert
activates the AUX output to divert (or “dump”) excess renewable energy to an AC load,
usually an AC device powered by the inverter itself. This prevents overcharging of the batteries. This
function can serve as rough charge regulation for an external charging source.
When battery voltage rises above a settable high voltage level, the AUX is activated after a settable delay.
The output controls a larger relay, which allows current to flow from the batteries to a dedicated AC load
50 900-0169-01-00 Rev A
Operation
when energized. Diversion is usually used to regulate battery charging. The AC device is usually wired to
the output or load panel and must be left on. It must be sized to dissipate all energy from the renewable
source if necessary. Diversion will turn off following a delay when a low DC voltage setting is reached.
The AUX output will automatically turn on to run the loads if the inverter accepts an AC source.
Settable parameters include:
Low and high DC voltage
On and off delay
During variable conditions, the AUX output is triggered no more than once per minute (if voltage
conditions are still met). This prevents rapid nuisance cycling of the AC load.
AC Divert should not be used as the sole source of battery regulation. If the inverter shuts down or fails,
the batteries could suffer severe damage. This function should be supported by an external regulator.
If the inverter shuts down due to overload, the AUX output will also shut down. If the inverter
load exceeds 30 Aac, the AUX output will turn off to prevent an overload condition.
If either the FETs or the capacitors (see page 64) become too hot, the AUX will turn off due to
diminished inverter wattage capacity.
Note that even if every function in the menu is set to
may still activate the AUX output. An example is the system display’s AGS function. See page 52.
The AUX functions are summarized in Table 5.
, external programming from other devices
Off
Table 5 Aux Mode Functions
Name Purpose
Load
Shed
Gen Alert
Fault
Vent Fan
Cool Fan
DC Divert
GT Limits
Source
Status
AC Divert
Operates designated loads
normally; turns off loads in
severe conditions
Starts generator to charge
batteries
Signals that the inverter shut
down due to error
Runs fan to vent batteries
while charging
Runs fan to cool inverter
Turns on DC dump load to
prevent overcharging
Signals disconnect of grid-tied
inverter due to AC conditions
Signals that the inverter
accepted an AC source
Turns on AC dump load to
prevent overcharging
Start Stop
High Vdc
Low Vdc
Error present
High Vdc
Internal sensor > 60°C
High Vdc
GIP parameters
not met
AC source accepted
High Vdc
AC source accepted
Triggers
Low Vdc
High temp
Low & high Vdc
On & Off delay
Low output Vac
High input Aac
High Vdc
Low & high Vdc
On & Off delay
Error cleared None
Below high Vdc
High Vdc
Off delay
Internal sensor < 49°C None
Low Vdc
Low & high Vdc
On & Off delay
GIP parameters met None
AC source
None
disconnected
Low Vdc
High output load
Low & high Vdc
On & Off delay
High temperature
Settable
Points
900-0169-01-00 Rev A 51
Operation
System Display-Based Functions
A system display such as the OutBack MATE3 can provide functions not available in the inverter.
These functions are summarized here to provide a better idea of overall system capabilities.
The system display must be present for these functions to operate. If a function is set up (or already in
operation) but the system display is removed, the function will not operate.
Advanced Generator Start (AGS)
As noted under the
Gen Alert
the inverter system can use the Advanced Generator Start (AGS) function, which utilizes the entire
three-stage charging cycle. It can start according to battery voltage, inverter load, time of day, and
other criteria. AGS has a quiet time application which restricts the generator from starting at
inconvenient times. Additional applications are also available.
simply starts and stops the generator based on battery voltage. For more advanced control,
Gen Alert
IMPORTANT:
This function is higher-priority than
can activate the AUX output even if the inverter has disabled it. When AGS is in
use,
by setting it to
function (see Table 5), the system is capable of starting a generator.
or any other inverter function. It
Gen Alert
Gen Alert
and other AUX functions should be disabled on that AUX output
. This will avoid programming conflicts.
OFF
Grid Functions
The following functions affect the transfer of the FXR inverter to and from an AC source (usually the
utility grid). These functions are based in the system display because they are system-wide. They
affect the transfer of all inverters on the system.
Table 6 on page 53 provides a comparison of these functions and the inverter’s
High Battery Transfer (HBX)
Mini Grid
input mode.
In HBX mode, the system is connected to the utility grid. However, it will use battery power as the first
priority. The utility grid is locked out until needed.
The system runs on battery-supplied power for as long as the batteries can be sustained. It is
expected that the system will be supplied by renewable sources such as PV power. When the
batteries become depleted, the system reconnects to the utility grid to operate the loads.
The batteries may be recharged during this time using the renewable source. When the batteries are
recharged to a high enough voltage, the system transfers back to the batteries as the primary source
(hence the name High Battery Transfer).
NOTE:
renewable source for charging batteries. Renewable charging is the motivator for returning to battery
(and renewable) operation. Use of the inverter’s charger interferes with this priority. It also may not
charge effectively.
HBX
mode may achieve similar results, but they are not identical. See page 23 (and Table 6) for the
advantages and disadvantages of each mode.
52
The inverter’s charger should be off. High Battery Transfer mode is intended to use only the
mode has similar priorities to the
Mini Grid
input mode contained within the FXR inverter. Either
900-0169-01-00 Rev A
Operation
Grid Use Time
The inverter system is capable of connecting to, or disconnecting from, the utility grid based on time
of day. It can also be programmed to connect at different times on weekdays and on weekends.
Load Grid Transfer
The inverter system is capable of connecting to, or disconnecting from, the utility grid based on load
size. This avoids undesirable battery discharge from excessive loads. It can also be programmed to
connect to the grid when the batteries reach a low voltage due to excessive discharge.
Table 6 Comparison of Grid Functions
Mode
Mini Grid
HBX
Grid Use
Time
Load Grid
Transfer
Complete Grid
Recharge
Yes
No
Depending on
Duration
Depending on
Duration
System
Display
Required
initial setup
Remains
installed
Remains
installed
Remains
installed
only
Connects
to Grid
Low
Battery
Low
Battery
Time of
Day
High Load Full Not required System
Adjustability
Limited (many
settings are
automatic)
Full
Full Not required System
Renewable
Energy
Must be larger
than inverter
Preferred to be
larger than
inverter
Location of
Function
Inverter
System
900-0169-01-00 Rev A 53
Operation
NOTES:
54 900-0169-01-00 Rev A
Metering
MATE3 Screens
The MATE3 system display can monitor the FXR inverter and other networked OutBack devices. From
the Home screen, the
<Inverter>
Inverter Screen
The Inverter soft key opens a screen showing the inverter operating mode, battery voltage, and status
of several AC operations. The
present. The
<Next>
soft key accesses the Battery screen.
“soft” key accesses the screens for monitoring the inverter.
Inverter Soft Key
Figure 17 Home Screen
<Port>
soft key will select other networked OutBack inverters, if
Charge ModeInverter Mode
Inverter Modes (master or
subphase master):
Inverting (see page 27)
Searching (see page 28)
Support (see page 18)
Sell (see page 19)
Charging (see Bulk on page 35)
Charger Off (see pages 32 and 35)
Float (see page 36)
EQ (see page 40)
Silent (see page 36)
PassThru (see page 32)
Error (see page 62)
Off
Inverter Modes (slave):
Slave On
Slave Off
Error
Charge Modes:
BULK
FLOAT
EQ
Figure 18 Inverter Screens
Screen items:
The upper left corner is the Inverter Mode (see above). When
specifies the stage.
900-0169-01-00 Rev A 55
displays the kilowatts and AC amperage generated by the inverter. It may go to loads, or in a
Invert
grid-interactive system it may be sold back to the utility grid.
Charge
line also shows the present charging stage.
displays the kilowatts and AC amperage consumed for the inverter to charge the battery bank. This
Charging
is indicated, the Charge Mode
Metering
displays kilowatts and AC amperage consumed by devices on the inverter’s output. It can be the same
Load
as
Invert
.
The
MATE3 screen.
displays the kilowatts and AC amperage brought into the inverter’s input for both charging and loads.
Buy
.
and
This is usually a total of
Battery
AC Out
usually the same as
AC In
erratic or inaccurate upon first connection until the inverter synchronizes with the input source.
AUX
A diode symbol may appear to the left of the screen name to indicate “diode charging” mode. This is a
mode that allows fine control of charging, selling, and load support. It does not visibly affect operation.
<Graph>
displays the uncompensated battery voltage.
displays the AC voltage measured at the inverter’s output. If an AC source is present, this reading is
displays the AC voltage measured at the inverter’s input from an AC source. This number may be
displays the current status of the inverter’s Auxiliary (AUX) 12-volt output. (See page 49.)
soft key brings up a series of screens which plot various types of data over time on the
Charge
AC In
Load
.
Battery Screen
The
<Next>
and temperature information.
soft key brings up a screen showing charger status, charger settings, and battery voltage
NOTE: The charger settings cannot be adjusted on this screen.
An arrow will appear to the right of
indicate that the charger is in that stage. The arrow will not appear if
the charger is in the Bulk stage, or if it is inactive.
Absorb, Float
, or
Equalize
to
Figure 19 Battery Screen
Screen items:
Actual
Absorb
Float
Equalize
Temp Comp
Temperature Sensor (RTS). If no RTS is present,
Batt Temp
only valid for port 1 on the HUB product. If other ports are selected, or if no RTS is present, the characters
### will be displayed.
Re-Float
voltage used for the inverter to return from Silent mode to the float stage. (See page 36.)
Sell RE
when the charger is otherwise inactive. (See pages 19 and 42.)
The
displays the uncompensated battery voltage.
displays the charger’s Absorption voltage setting. (See page 35.)
displays the charger’s Float voltage setting. (See page 36.)
displays the charger’s Equalization voltage setting. (See page 40.)
displays the corrected battery voltage using temperature readings from the Remote
Temp Comp
displays the battery temperature in degrees Celsius, as measured by the RTS. This reading is
displays the Re-Float setting which was programmed into the inverter’s charger. This is the
voltage is the target voltage used by the inverter for both the Offset and grid-interactive functions
<Warn>
and
<Error>
keys bring up screens with various fault information. See the next section.
and
Actual
will read the same. (See page 40.)
56 900-0169-01-00 Rev A
Troubleshooting
Basic Troubleshooting
Table 7 is organized in order of common symptoms, with a series of possible causes. Each cause also
shows possible troubleshooting remedies, including system display checks where appropriate.
In troubleshooting, AC
voltages can be measured
at the attachment screw
for each AC conductor.
Figure 20 AC Test Points
WARNING: Shock Hazard
During an error shutdown, the inverter’s output terminals are not live. However,
if the inverter recovers from a shutdown, the terminals will become live without
notice. Several error shutdowns can be recovered automatically, including
Battery V, High Battery V
, and
Over Temperature
Table 7 Troubleshooting
Symptom Possible Cause Possible Remedy
No DC voltage. Use a DC voltmeter to check the voltage directly on the DC
terminals. If not present, the problem is external. If present, the
inverter could be damaged. Contact OutBack Technical Support.5
No AC output
(will not invert).
Inverter ON/OFF jumper
missing.
Unit defaulted off
(No MATE3 present; initial
install; Inverter ON/OFF jumper
confirmed present).
Inverter set to
Inverter set to
mode).
. MATE3 system display only: Set to On with the
Off
(Search
Search
See the Installation Manual for the location of the jumper. Confirm
the jumper is present. If missing, replace the jumper. Or follow the
Installation Manual instructions to install an external switch.
The FXR inverter is given an initial Off command in the factory.
With DC present, use narrow pliers to remove the jumper from its
pins. Once removed, install it again. This is the equivalent of
“jiggling the switch.”
: The ON/OFF jumper must be installed.
NOTE
MATE3 system display only: If constant power is required, set to On
with the
no action is required.)
INVERTER
Low
. See page 62.
INVERTER
hot key. (If this setting was intentional, then
hot key.
5
See inside front cover of this manual.
900-0169-01-00 Rev A 57
Troubleshooting
Table 7 Troubleshooting
Symptom Possible Cause Possible Remedy
One or more units
have no output but
others do (in multiinverter system).
Will not connect to
the AC source.
Unit is slave and is in Silent
mode.
No AC input.
AC source does not meet
requirements.
AC source meets requirements
but is “noisy” or irregular.
Inverter was manually set to
disconnect from AC.
Grid use function has
disconnected from AC.
High Battery Transfer
(
) mode has disconnected
HBX
from AC.
MATE3 system display only: Check Power Save levels in the
Inverter Stacking
inverter comes on at the appropriate levels. (If this setting was
intentional, then no action is required.)
Check the AC voltage on the inverter’s input terminals. (See page
57.) If not present, the problem is external. If present, the inverter
could be damaged. Contact OutBack Technical Support.
MATE3 system display only: Check the
(using the
reason for disconnection. If the unit never originally connected,
check the
Home screen). Confirm source voltage and frequency.
MATE3 system display only: The
irregular AC power. Select that mode for that input.
MATE3 system display only: Change the AC Input Control setting
from
Drop
was intentional, then no action is required.)
MATE3 system display only: If activated prematurely, check the
MATE3’s
this setting was intentional, then no action is required.)
MATE3 system display only: Check the
to see if
settings of
action is required.)
Grid Use Time
HBX
menu and test with loads. Determine if the
6
Last AC Disconnect
AC INPUT
Warning
to
Use
mode is in use. If activated prematurely, check the
HBX
hot key and the
menu (using the Inverter soft key from the
Generator
with the
mode. (If this setting was intentional, then no
AC INPUT
settings and the MATE3 clock settings. (If
AC INPUT
selection) for the
Discon
input mode can accept
hot key. (If this setting
screen
hot key screen
Load Grid Transfer
disconnected from AC.
Mini Grid
disconnected from AC.
Conflicting programming. MATE3 system display only: Check to see if more than one of these
Grid Tied
disconnected from AC.
6
See inside front cover of this manual.
input mode has
mode has
mode has
MATE3 system display only: Check the
to see if
prematurely, check the settings of
this setting was intentional, then no action is required.)
MATE3 system display only: Check the
menu to see if
check the settings of
intentional, then no action is required.)
is enabled:
These have conflicting priorities. Only one can be used at a time.
AC source does not meet requirements; see related entry under
“Will not sell power to the utility grid” (next page).
Load Grid Transfer
Mini Grid
Mini Grid, HBX, Grid Use Time, Load Grid Transfer
mode is in use. If activated
mode is in use. If activated prematurely,
Mini Grid
AC INPUT
Load Grid Transfer
Inverter
mode. (If this setting was
hot key screen
mode. (If
part of the
Settings
.
58 900-0169-01-00 Rev A
Table 7 Troubleshooting
d
d
r
S
S
Symptom Possible Cause Possible Remedy
Troubleshooting
Low charge rate.
Will not charge.
Charge complete or nearly
complete.
MATE3’s DC meter reads
significantly higher than actual
battery voltage.
High output loads. If total loads and charge exceed the AC input setting, charge rate
High temperature. The inverter will reduce the current rate for charging and other
No AC input. See “Will not connect to AC” category.
Charger set to
Grid Zero
Grid-tied function has been
manually disabled.
mode in use. MATE3 system display only: The charger is inoperative in
. MATE3 system display only: Check the
Off
Check the DC voltage and charging stage using the MATE3, if
present. Confirm with DC voltmeter.
Check the DC voltage on the inverter’s DC terminals. If different
from the MATE3 reading, the inverter could be damaged.
Otherwise, check the DC voltage on batteries with a voltmeter. If
different from the reading on the inverter, this could be a DC
connection problem.
decreases to give priority to the loads. Turn off some of the
output loads and test the charge rate again.
activities if the internal temperature exceeds a certain level.
Check temperature readings and allow the inverter to cool if
necessary. (See page 64.) External cooling may also be applied.
Charger Mode
CHARGER
the
intentional, then no action is required.)
mode. (If this setting was intentional, then no action is required.)
MATE3 system display only: Check the
the
Grid-Tie Sell
hot key and set to On or
menu. Confirm it is set to Y.
Auto
Gri
-Tie Enable
screen with
. (If this setting was
Grid Zero
setting in
Will not sell power
to the utility grid.
Reduced power sold
to the utility grid.
Grid Tie
AC source does not meet
requirements; this item is
usually accompanied by
disconnecting from the
utility grid when in
mode.
The inverter has other criteria
besides the AC source which
must be met, such as the
qualifying time.
The inverter will perform the
Offset function before
attempting to sell.
AC source voltage is driven high
when the inverter sells large
amounts of power.
High temperature. The inverter will reduce the current rate for selling and other
mode not in use. MATE3 system display only: Check the
Grid Tied
menu to see if
Verify grid voltage and frequency. Determine if they are within
the inverter’s approved limits. If not, the inverter is operating
correctly. Contact the utility company if necessary.
MATE3 system display only: The program limits are found in the
inverter’s
information on this menu.
MATE3 system display only: Check
Home screen’s soft keys. The inverter may be operating correctly.
Depending on the conditions which need to be met, the delay
may be temporary.
Output loads can consume all excess renewable power if they are
large enough. (The Offset function “sells to the loads.”) Turn off
some output loads and observe the sell operation.
When the inverter senses a rise in grid voltage while selling, it
reduces the sell current, to avoid forcing the voltage to
unacceptable levels. Check AC input voltage while selling. The
inverter may be operating correctly.
activities if the internal temperature exceeds a certain level.
Check temperature readings and allow the inverter to cool if
necessary. (See page 64.) External cooling may also be applied.
Grid Tied
Grid Interface Protection
mode is in use.
ell Status
Inverte
menu. See page 20 for more
part of the
screen using the
ettings
900-0169-01-00 Rev A 59
Troubleshooting
n
T
S
T
Table 7 Troubleshooting
Symptom Possible Cause Possible Remedy
Inverter does not
perform the Offset
function when
expected.
Unusual voltage on
hot or neutral
output line.
Unusual and
different voltages on
AC hot input lines.
Incorrect input mode.
Specific mode only offsets
under particular conditions.
System neutral and ground may
not be bonded.
Inverter has not synchronized
with input source.
Erratic AC source voltage.
Offset does not function in
Support
This may appear as Offset without reaching the reference voltage.
Grid Zero
setting. Other reference voltages are not used.
Test
voltmeter. (See page 57.) These measurements should give full
voltage. Test neutral and ground connections. This measurement
should read zero volts. Any other result means neutral and ground
are not bonded correctly. (If bonding is not required or is
prohibited by national or local codes, then no action may be
required.)
MATE3 system display only: The
Inverter soft key may be erratic or inaccurate after initial
connection until the inverter has synchronized with the AC
source. This may require a short time.
Check AC voltage on the
terminals. (See page 57.) If not consistent, the problem is external.
MATE3 system display only: AC source voltage may have dipped to a
low enough point to crash a sensitive load before the inverter could
take over. This can happen if the inverter’s
Limits
accommodate a problematic AC source. To make the inverter
respond sooner, raise the lower limit setting in the appropriate
menu. (If this setting was intentional, then no action is required.)
mode will perform the Support function based on load.
mode will perform Offset based on the
AC HOT OUT
or
Gen AC Input Voltage Limits
and
Generator, UPS
AC NEUTRAL OUT
AC I
AC HOT IN
, and
Backup
DoD Volts
terminals with AC
reading accessed by the
and
AC NEUTRAL IN
Grid AC Input Voltage
were turned down to
modes.
Inverter set to
Loads drop out or
crash during
transfer.
Unit reads AC input,
even though no
source is present.
7
See inside front cover of this manual.
mode).
Loads sensitive to inverter’s
transfer time.
in use.
Loads too large.
Undersized battery cables.
Internal transfer relay may be
damaged. May be
accompanied by
error and shutdown.
False reading due to noise.
(Search
Search
mode not
UPS
AC Relay Fault
he unit will take a moment to come out of Search after transfer.
MATE3 system display only: If constant power is required, set to
with the
ON
then no action is required.)
MATE3 system display only: Most of the inverter’s input modes
feature a small but noticeable response time during transfer.
Certain loads (such as highly sensitive computers) may not respond
well. The
he unit can transfer more power than it can invert. If loads are
oversized, the unit will falter or crash when switching to batteries.
Reduce the size of the loads.
Battery cables smaller than recommended will cause a significant
voltage drop when switching to batteries, acting like either an
overload or a low-battery condition. Size all cables correctly.
Disconnect AC input wires and turn inverter on. Test the
and
OUT
page 57.) If voltage appears there, the transfer relay may be
jammed. Contact OutBack Technical Support.
Electrical noise can cause false readings on the metering circuits
when no voltage is present. The readings are usually less than
30 Vac. If this is the case, no action is required.
INVERTER
input mode has a faster response time. (See page 21.)
UP
AC NEUTRAL OUT
hot key. (If this setting was intentional,
terminals with an AC voltmeter. (See
7
AC HOT
60 900-0169-01-00 Rev A
Table 7 Troubleshooting
AGS
Symptom Possible Cause Possible Remedy
Troubleshooting
Inverter clicks
repeatedly. AC
output voltage rises
or drops to unusual
levels with every
click.
Inverter hums
loudly. System
display may show
messages for high
battery voltage,
low battery voltage,
or backfeed error.
Generator, external
fan, etc. fails to start
when signal is
provided by AUX
output.
Inverter’s output has been
connected to its input. Voltage
shifts are the result of trying to
match its own voltage.
Low AC input voltage. Can be
caused by weak AC source, or
by faulty input connection.
A generator is connected to the
input terminals while the unit is
in the
Grid Tied
Inverter output is being
supplied with an external AC
source that is out of phase.
Inverter has been incorrectly
stacked with another unit on
the same output. All units
come defaulted as master.
AUX output is not connected. Test the generator or device to confirm functionality. Test the
input mode.
Disconnect the wires from the inverter’s AC input or AC output
terminals, or both. If the problem immediately disappears, it is an
external wiring issue. The inverter’s
must remain isolated from each other.
Test
AC HOT IN
voltmeter. (See page 57.) If low or fluctuating, this is an external
problem.
The inverter is not intended to sell power to a generator. The
selling activity will drive the generator voltage up to the
disconnection point. It will then reconnect to the generator and
try again. Change input modes, or move the generator to an
input with a different mode selected.
Disconnect
inverter off and then on. If the problem clears, reconnect the AC
output wires. If the problem recurs when reconnected, an
external AC source is connected to the output.
Check HUB10.3 ports and make certain the master inverter is
plugged into port 1.
MATE3 system display only: Check stacking settings in the
Stacking
AUX terminals with a DVM. If 12 Vdc is present when the menu
indicates the function is On (and the device still does not work),
then there is an external connection problem. If 12 Vdc is not
present with the function On, the AUX circuit may be damaged.
Contact OutBack Technical Support.
and
AC NEUTRAL IN
AC HOT OUT
menu. Only one master is allowed per system.
and
AC HOT IN
terminals with an AC
AC NEUTRAL OUT
8
and
AC HOT OUT
wires. Turn the
Inverter
Advanced
Generator Start
(
) fails to
AGS
activate when
conditions are met
(or starts when
conditions are
not met).
8
See inside front cover of this manual.
900-0169-01-00 Rev A 61
MATE3 system display is not
present.
Other AUX functions are in
operation.
programming is located in the MATE3 and cannot function if
the MATE3 is removed.
Gen Alert
generator using the wrong criteria. Make sure all other AUX
functions are disabled.
or another AUX function may try to start or stop the
Troubleshooting
t
A
Error Messages
An error is caused by a critical fault. In most cases when this occurs, the ERROR indicator will
illuminate and the inverter will shut down. (See page 15 for the FXR inverter’s LED indicators.) The
MATE3 system display will show an event and a specific error message. The
Inverter Errors
viewed using the MATE3 Home screen’s soft keys. (See the MATE3 manual for more instructions.) One
or more messages will display Y (yes). If a message says N (no), it is not the cause of the error.
Some errors will reset automatically when the cause is resolved. These are noted.
It is possible to clear an error by resetting the inverter. The inverter must be turned off, and then on,
to reset it. Other possible steps are shown below. Each should be followed by resetting the inverter.
Table 8 Error Troubleshooting
Message Causes Possible Remedy
screen is
Low Output Voltage
AC Output Shorted
AC Output Backfeed
Stacking Error
Low Battery V
High Battery V
Over Temperature
Comm Faul
9
8
Inverter’s AC regulation cannot be maintained
under high load conditions.
Inverter exceeded its maximum surge current
due to severe overload.
Usually indicates another AC power source (out
of phase with the inverter) was connected to
the unit’s AC output.
Programming problem among stacked units.
(Often occurs if there is no master.)
Can also occur if
DC voltage is below low battery cut-out set
point, usually due to battery discharge. This
occurs after 5 minutes at this voltage.
This error can be triggered by other causes. It
can appear along with
Output Shorted
DC voltage exceeded acceptable level. See
page 27.
8
Inverter has exceeded its maximum allowed
operating temperature. See page 64.
The inverter has suffered an internal
communication failure.
AC Output Backfeed
Low Output Voltage, AC
, or
AC Output Backfeed
occurs.
errors.
Check loads and measure current draw. Remove
loads as necessary.
Check the loads and wiring. This issue is usually
the result of a wiring problem (a short), as
opposed to a poorly-sized load.
Disconnect the AC OUT wires from the inverter.
Check the wires (not the inverter) with an AC
voltmeter. If an AC source is present, shut it off.
Check stacking programming and
designation of master. (See page 43.)
Check for output backfeed from an external
source. Disconnect output if necessary.
If this error accompanies other errors, treat
those conditions as appropriate.
If it occurs by itself: Recharge the batteries.
The error will clear automatically if an AC
source is connected and the charger turns on.
Check the charging source. This problem is
usually the result of external charging.
Allow the inverter to remain off to reduce the
temperature, or add external cooling.
10
Contact OutBack Technical Support.
Loose DC Neg
Terminals
Battery Voltage
Sense
C Relay Fault
9
This error will clear automatically when the cause of the error is resolved. The inverter will begin functioning again when this occurs.
10
See inside front cover of this manual.
Loose DC connection on internal power
module.
Internal sensing has detected battery voltages
below 8 Vdc or above 18 Vdc for a 12-volt model
(or equivalent for higher-voltage models).
AC transfer relay damaged. Contact OutBack Technical Support.
62 900-0169-01-00 Rev A
Tighten all DC connections between inverter and
battery. If this error is not resolved, contact
OutBack Technical Support.
If these readings are not correct, contact
OutBack Technical Support.
9
10
9
Troubleshooting
A
AC
w
w
x
d
Warning Messages
A warning message is caused by a non-critical fault. When this occurs, the ERROR indicator will flash,
although the inverter will not shut down. (See page 15 for the FXR inverter’s LED indicators.) The
MATE3 system display will show an event and a specific warning message. The
Inverter Warnings
screen is viewed using the MATE3 Home screen’s soft keys. (See the MATE3 manual for more
instructions.) One or more messages will display Y (yes). If a message says N (no), it is not the cause of
the warning.
Some warnings can become errors if left unattended. Frequency and voltage warnings are meant to
warn of a problematic AC source. Often the inverter will disconnect from the source. This will occur if
the condition lasts longer than the inverter’s transfer delay settings. If the inverter disconnects, the
warning will display as long as the source is present, accompanied by a disconnect message. (See
page 65.)
Warning screens can only display warnings; they cannot clear them. The way to correct the fault may
be obvious from the message.
Table 9 Warning Troubleshooting
Message Definition Possible Remedy
C Freq Too High
Freq Too Lo
Voltage Too High
Voltage Too Lo
Input Amps > Ma
Temp Sensor Ba
The AC source is above the upper acceptable
frequency limit and prevents connection.
The AC source is below the lower acceptable
frequency limit and prevents connection.
The AC source is above the upper acceptable
voltage limit and prevents connection.
The AC source is below the lower acceptable
voltage limit and prevents connection.
AC loads are drawing more current from the
AC source than allowed by the input setting.
An internal inverter temperature sensor may
be malfunctioning. One of the three internal
sensor meters may give an unusual reading.
Check the AC source. If it is a generator, reduce
its speed.
Check the AC source. If it is a generator, increase
its speed.
Check the AC source. The inverter’s acceptance
range is adjustable.
Adjusting the range may accommodate a
NOTE:
problematic AC source, but it will not fix it.
Check the AC source. Check the AC wiring. The
inverter’s acceptance range is adjustable.
Adjusting the range may accommodate a
NOTE:
problematic AC source, but it will not fix it.
Check the loads. Oversized loads can open circuit
breakers. If they exceed the inverter’s transfer
relay size, the relay can be damaged.
This issue is usually the result of a poorly-sized
load, as opposed to a wiring problem.
In the MATE3, the three readings are labeled
Transformer, Output FETs,
These values are given in degrees Celsius. See
next page.
and
Capacitors
.
Phase Loss
11
See inside front cover of this manual.
900-0169-01-00 Rev A 63
A slave or subphase master inverter was
ordered to transfer to an AC source by the
master, but the AC source is the wrong phase
or no AC source is present.
Check the AC voltage on the inverter input
terminals. If AC voltage is not present, problem is
external. If AC voltage is present, the unit may be
damaged. Contact OutBack Technical Support.
11
Troubleshooting
r
A
A
w
w
Table 9 Warning Troubleshooting
Message Definition Possible Remedy
Fan Failure
Transforme
(in
screen)
Temps
Output FETs
(in
Capacitors
(in
Temps
Temps
screen)
screen)
The inverter’s internal cooling fan is not
operating properly. Lack of cooling may
result in derated inverter output wattage.
D
isplays the ambient temperature around the
inverter’s transformer.
Displays the temperature of the FETs
(Field Effect Transistors) and heat sink.
Displays the temperature of the inverter’s
ripple capacitors.
Turn the battery disconnect off, and then on, to
determine if the fan self-tests. After this test,
contact OutBack Technical Support for the next
step. (The next step will depend on the results of
the test.)
The system can continue to operate if the
NOTE:
inverter can be run at reasonable levels. External
cooling may also be applied.
In the MATE3, these values are given in degrees
Celsius.
If any reading does not seem to reflect the
inverter’s temperature or conditions, contact
OutBack Technical Support.12
Temperatures
As shown in Table 9, the
Inverter Warnings
temperature readings. These readings can affect inverter operations in high temperatures. Table 10
shows the temperature limits used by each sensor and the effects on inverter operations.
Table 10 Inverter Temps
screen has an
Inverter Temps
selection for three internal
Effect
Temperature Reading
Transformer Output FETs Capacitors
Over Temperature
Reduced charging or selling =120°C =90°C =90°C
Fan turns on >60°C >60°C >60°C
Fan turns off <50°C <50°C <50°C
error
>125°C >95°C >95°C
GT Warnings
This screen is also available under
Inverter Warnings
why a grid-interactive inverter has stopped selling. These warnings are caused when the grid exceeds
one of the settings in the
Grid Interface Protection
Disconnect message (see Table 12) or a regular warning (see Table 9), depending on conditions.
Table 11 GT Warnings
Message Definition
C Freq Too High
C Freq Too Lo
Voltage Too High
Voltage Too Lo
The AC source has exceeded
The AC source has dropped below
The AC source has exceeded
The AC source has dropped below
. The GT (grid-tie) warnings in Table 11 indicate
menu. A GT warning may accompany a
Grid Interface Protection
Grid Interface Protection
Grid Interface Protection
Grid Interface Protection
frequency levels.
frequency levels.
voltage levels.
voltage levels.
12
See inside front cover of this manual.
64 900-0169-01-00 Rev A
Troubleshooting
w
Disconnect Messages
Disconnect messages explain why the inverter has disconnected from an AC source after previously
being connected. The unit returns to inverting mode if turned on. The
viewed using the
AC INPUT
hot key on the MATE3. One or more messages will display Y (yes). If a
Last AC Disconnect
message says N (no), it is not the cause of the disconnection. The MATE3 system display may generate
a concurrent event and warning message following the disconnection. (See page 63.) If the AC source
is removed, the warning will be blank, but the cause of the last disconnection will remain.
Disconnect messages only display the reason for the disconnection; they cannot correct it. It is usually
the result of external conditions, not an inverter fault. If the condition is corrected, the inverter will
reconnect. A few settings can be changed to accommodate problems with the AC source.
The reasons shown in the Sell Status screen for ceasing to sell power (see next page) may be the same
as disconnect messages. If the Grid Interface Protection settings are exceeded (see page 20), the
inverter will disconnect from the utility grid.
Table 12 shows the primary seven reasons for disconnection. An eighth field may be visible, but it can
feature several different messages which vary with conditions. A list of these messages and their
definitions is featured on the OutBack website at www.outbackpower.com.
screen is
Table 12 Disconnect Troubleshooting
Message Definition Possible Remedy
Frequency Too High
Frequency Too Lo
Voltage > Maximum
Voltage < Minimum
Backfeed
The AC source has exceeded acceptable
frequency levels.
The AC source has dropped below
acceptable frequency levels.
The AC source has exceeded acceptable
voltage levels.
The AC source has dropped below
acceptable voltage levels.
Usually indicates that another AC power
source (out of phase with the inverter) was
connected to the AC output.
Can also occur if an out-of-phase AC source
is connected to the AC input.
Check AC source. If it is a generator, reduce speed.
Check AC source. If it is a generator, increase speed.
Check AC source. The inverter’s acceptance range
is adjustable.
Adjusting the range may accommodate a
NOTE:
problematic AC source, but it will not fix it.
Check AC source. The inverter’s acceptance range
is adjustable.
Adjusting the range may accommodate a
NOTE:
problematic AC source, but it will not fix it.
Disconnect the AC OUT wires. Check the wires (not
the inverter) with an AC voltmeter. If an AC source
is present, shut it off. (This is more often
accompanied by an
Check input source and wiring. This can be caused
by a source with phase problems.
AC Output Backfeed
error.)
Phase Lock
Island Detect
900-0169-01-00 Rev A 65
The unit cannot remain in phase with an
erratic AC source.
The grid seems to be present but normal
grid conditions are not detected. This can
occur if the inverter’s input is powered by
another inverter instead of the grid. It may
be the result of an open main disconnect.
Check AC source. This can be caused by a generator
with a poorly regulated output. Some generators
perform this way when low on fuel. If necessary, use
the
Generator
Check all input disconnects or circuit breakers for an
open circuit. Check for any other inverters installed
in the system and disable them.
This may (rarely) occur with a generator. If necessary,
use the
input mode. (See page 18.)
Generator
input mode. (See page 18.)
Troubleshooting
d
Sell Status
Sell Status messages describe conditions relating to the inverter’s grid-interactive mode. This screen is
viewed using the MATE3 Home screen’s soft keys. (See the MATE3 manual for more instructions.) One
or more messages will display Y (yes). If a message says N (no), it is not the cause of the disconnection.
If the inverter has stopped selling or charging unexpectedly, this screen may identify the reason. More
often these messages are used by a normally functioning inverter to identify external conditions that
are preventing selling or charging. (If nothing has stopped, the messages will indicate that as well.)
The acceptable limits for AC source voltage and frequency are controlled by the Grid Interface
Protection settings, which are shown in the default menus beginning on page 76. If the AC source
exceeds these limits, the inverter will stop selling and display the appropriate code. (At the same time
it will disconnect from the utility grid, with an appropriate message as shown in Table 12 on page 65.)
After the source returns to the acceptable range, the screen will begin its reconnection timer (with a
default setting of five minutes). When the timer expires, the inverter will reconnect to the utility grid
and begin selling power again.
If the AC source is unstable, it may become unacceptable before the timer expires. This may cause the
timer to continually reset. It is possible for brief fluctuations to occur that are too fast to be seen on a
DVM. If this happens, the appropriate message will still appear on the system display for a short time
to help troubleshoot the problem.
Additionally, undersized wires or bad connections can result in local voltage problems. If a
Too Low
or
Voltage Too High
message is accompanied by voltage changes that do not appear at the
Voltage
main utility connection, check the wiring.
Table 13 Sell Status Messages
Sell Status Definition
The
Selling Disabled
Qualifying Gri
Frequency Too Low
Frequency Too High
Voltage Too Low
Voltage Too High
Battery < Target
Grid-Tie Enable
All utility grid conditions are acceptable. The inverter is running
a timed test during which it confirms the grid quality. The timer
is shown on the screen. At the end of that time, the inverter
may be ready to sell.
The utility grid’s AC frequency is below the acceptable range
for selling.
The utility grid’s AC frequency is above the acceptable range
for selling.
The utility grid’s AC voltage is below the acceptable range
for selling.
The utility grid’s AC voltage is above the acceptable range
for selling.
The battery voltage is below the target voltage for that stage
(Float, Selling, etc.). No excess energy is available to sell.
command has been set to N (no).
66 900-0169-01-00 Rev A
Specifications
Electrical Specifications
: Items qualified with “default” can be manually changed using the system display.
NOTE
Table 14 Electrical Specifications for 12-Volt FXR Models
Specification FXR2012E VFXR2612E
Continuous Output Power at 25°C 2000 VA 2800 VA
Continuous AC Output Current at 25°C 8.7 Aac 11.3 Aac
AC Output Voltage (default) 230 Vac 230 Vac
AC Output Frequency (default) 50 Hz 50 Hz
AC Output Type Single-phase Single-phase
AC Waveform True Sinewave True Sinewave
Typical Efficiency 90% 90%
Total Harmonic Distortion (maximum) < 5% < 5%
Harmonic Distortion (maximum single voltage) < 2% < 2%
AC Output Voltage Regulation ± 2.5% ± 2.5%
Appliance Protective Class (IEC) Class I Class I
Power Factor –1 to 1 –1 to 1
Inrush Current None None
AC Maximum Output Current (1 ms peak) 28 Aac 28 Aac
AC Maximum Output Current (100 ms RMS) 20 Aac 20 Aac
AC Overload Capability (100 ms surge) 4600 VA 4600 VA
AC Overload Capability (5 second) 4300 VA 4300 VA
AC Overload Capability (30 minute) 2500 VA 3100 VA
AC Maximum Output Fault Current and Duration 28.3 Aac for 0.636 seconds 28.3 Aac for 0.636 seconds
Power Consumption (idle) – Invert mode, no load ≈ 34 watts ≈ 34 watts
Power Consumption (idle) – Search mode 9 watts 9 watts
Power Consumption – Off 3 watts 3 watts
AC Input Voltage Range 170 to 290 Vac 170 to 290 Vac
AC Input Frequency Range
AC Input Current (maximum continuous) 30 Aac 30 Aac
Grid-Interactive Voltage Range (default)
Grid-Interactive Frequency Range (default)
DC Input Voltage (nominal) 12 Vdc 12 Vdc
DC Input Voltage Range 10.5 to 17 Vdc 10.5 to 17 Vdc
DC Maximum Input Voltage 17 Vdc 17 Vdc
DC Input Power (continuous) 2.4 kVA 3.12 kVA
DC Input Maximum Current (continuous full power) 200 Adc 260 Adc
DC Input Maximum Current (surge) 460 Adc 460 Adc
DC Input Maximum Current (short-circuit) 1891 Adc for 0.105 seconds 1891 Adc for 0.105 seconds
Battery Charger Maximum AC Input 5 Aac 6 Aac
Battery Charger Maximum DC Output 100 Adc 120 Adc
DC Output Voltage Range (charging) 11 to 17 Vdc 11 to 17 Vdc
Auxiliary Output 0.7 Adc at 12 Vdc 0.7 Adc at 12 Vdc
45 to 55 Hz at 50-Hz setting
54 to 66 Hz at 60-Hz setting
—
—
45 to 55 Hz at 50-Hz setting
54 to 66 Hz at 60-Hz setting
—
—
900-0169-01-00 Rev A 67
Specifications
Table 15 Electrical Specifications for 24-Volt FXR Models
Specification FXR2024E VFXR3024E
Continuous Output Power at 25°C 2000 VA 3000 VA
Continuous AC Output Current at 25°C 8.7 Aac 13 Aac
AC Output Voltage (default) 230 Vac 230 Vac
AC Output Frequency (default) 50 Hz 50 Hz
AC Output Type Single-phase Single-phase
AC Waveform True Sinewave True Sinewave
Typical Efficiency 92% 92%
Total Harmonic Distortion (maximum) < 5% < 5%
Harmonic Distortion (maximum single voltage) < 2% < 2%
AC Output Voltage Regulation ± 2.5% ± 2.5%
Appliance Protective Class (IEC) Class I Class I
Power Factor –1 to 1 –1 to 1
Inrush Current None None
AC Maximum Output Current (1 ms peak) 35 Aac 35 Aac
AC Maximum Output Current (100 ms RMS) 25 Aac 25 Aac
AC Overload Capability (100 ms surge) 5750 VA 5750 VA
AC Overload Capability (5 second) 5175 VA 5175 VA
AC Overload Capability (30 minute) 3100 VA 3300 VA
AC Maximum Output Fault Current and Duration 36 Aac for 0.636 seconds 36 Aac for 0.636 seconds
Power Consumption (idle) – Invert mode, no load ≈ 34 watts ≈ 34 watts
Power Consumption (idle) – Search mode 9 watts 9 watts
Power Consumption – Off 3 watts 3 watts
AC Input Voltage Range 170 to 290 Vac 170 to 290 Vac
AC Input Frequency Range
AC Input Current (maximum continuous) 30 Aac 30 Aac
Grid-Interactive Voltage Range (default) 208 to 252 Vac 208 to 252 Vac
Grid-Interactive Frequency Range (default) 47 to 51 Hz 47 to 51 Hz
DC Input Voltage (nominal) 24 Vdc 24 Vdc
DC Input Voltage Range 21 to 34 Vdc 21 to 34 Vdc
DC Maximum Input Voltage 34 Vdc 34 Vdc
DC Input Power (continuous) 2.4 kVA 3.6 kVA
DC Input Maximum Current (continuous full power) 100 Adc 150 Adc
DC Input Maximum Current (surge) 287.5 Adc 287.5 Adc
DC Input Maximum Current (short-circuit) 1891 Adc for 0.105 seconds 1891 Adc for 0.105 seconds
Battery Charger Maximum AC Input 5 Aac 9 Aac
Battery Charger Maximum DC Output 55 Adc 80 Adc
DC Output Voltage Range (charging) 21 to 34 Vdc 21 to 34 Vdc
Auxiliary Output 0.7 Adc at 12 Vdc 0.7 Adc at 12 Vdc
45 to 55 Hz at 50-Hz setting
54 to 66 Hz at 60-Hz setting
45 to 55 Hz at 50-Hz setting
54 to 66 Hz at 60-Hz setting
68 900-0169-01-00 Rev A
Specifications
Table 16 Electrical Specifications for 48-Volt FXR Models
Specification FXR2348E VFXR3048E
Continuous Output Power at 25°C 2300 VA 3600 VA
Continuous AC Output Current at 25°C 10 Aac 13 Aac
AC Output Voltage (default) 230 Vac 230 Vac
AC Output Frequency (default) 50 Hz 50 Hz
AC Output Type Single-phase Single-phase
AC Waveform True Sinewave True Sinewave
Typical Efficiency 93% 93%
Total Harmonic Distortion (maximum) < 5% < 5%
Harmonic Distortion (maximum single voltage) < 2% < 2%
AC Output Voltage Regulation ± 2.5% ± 2.5%
Appliance Protective Class (IEC) Class I Class I
Power Factor –1 to 1 –1 to 1
Inrush Current None None
AC Maximum Output Current (1 ms peak) 35 Aac 35 Aac
AC Maximum Output Current (100 ms RMS) 25 Aac 25 Aac
AC Overload Capability (100 ms surge) 5750 VA 5750 VA
AC Overload Capability (5 second) 5175 VA 5175 VA
AC Overload Capability (30 minute) 3100 VA 3300 VA
AC Maximum Output Fault Current and Duration 36 Aac for 0.636 seconds 36 Aac for 0.636 seconds
Power Consumption (idle) – Invert mode, no load ≈ 34 watts ≈ 34 watts
Power Consumption (idle) – Search mode 9 watts 9 watts
Power Consumption – Off 3 watts 3 watts
AC Input Voltage Range 170 to 290 Vac 170 to 290 Vac
AC Input Frequency Range
AC Input Current (maximum continuous) 30 Aac 30 Aac
Grid-Interactive Voltage Range (default) 208 to 252 Vac 208 to 252 Vac
Grid-Interactive Frequency Range (default) 47 to 51 Hz 47 to 51 Hz
DC Input Voltage (nominal) 48 Vdc 48 Vdc
DC Input Voltage Range 42 to 68 Vdc 42 to 68 Vdc
DC Maximum Input Voltage 68 Vdc 68 Vdc
DC Input Power (continuous) 2.7 kVA 3.6 kVA
DC Input Maximum Current (continuous full power) 57.5 Adc 75 Adc
DC Input Maximum Current (surge) 143.75 Adc 143.75 Adc
DC Input Maximum Current (short-circuit) 1891 Adc for 0.105 seconds 1891 Adc for 0.105 seconds
Battery Charger Maximum AC Input 5 Aac 9 Aac
Battery Charger Maximum DC Output 35 Adc 40 Adc
DC Output Voltage Range (charging) 42 to 68 Vdc 42 to 68 Vdc
Auxiliary Output 0.7 Adc at 12 Vdc 0.7 Adc at 12 Vdc
45 to 55 Hz at 50-Hz setting
54 to 66 Hz at 60-Hz setting
45 to 55 Hz at 50-Hz setting
54 to 66 Hz at 60-Hz setting
900-0169-01-00 Rev A 69
Specifications
Mechanical Specifications
Table 17 Mechanical Specifications for FXR Models
Specification
Inverter Dimensions (H x W x D)
Shipping Dimensions (H x W x L) 21.75 x 13 x 22” (55 x 33 x 56 cm) 21.75 x 13 x 22” (55 x 33 x 56 cm)
Inverter Weight 62 lb (29 kg) 61 lb (28 kg)
Shipping Weight 67 lb (30 kg) 67 lb (30 kg)
Accessory Ports RJ11 (batt temp) and RJ45 (remote) RJ11 (batt temp) and RJ45 (remote)
Non-volatile Memory Yes Yes
Neutral-Ground
Bond Switching
Chassis Type Sealed Vented
FXR2012E, FXR2024E, and
FXR2348E
13 x 8.25 x 16.25"
(33 x 21 x 41 cm)
No No
VFXR2612E, VFXR3024E, and
VFXR3048E
12 x 8.25 x 16.25"
(30 x 21 x 41 cm)
Environmental Specifications
Table 18 Environmental Specifications for all FXR Models
Specification Value
Rated Temperature Range (meets component specifications; however,
please note that the inverter output wattage is derated above 25°C)
Operational Temperature Range (functions, but not rated for operation;
does not necessarily meet all component specifications)
Storage Temperature Range –40°F to 140°F (–40°C to 60°C)
IP (Ingress Protection) Rating of Enclosure IP20
Environmental Category Indoor unconditioned
Wet Locations Classification Wet locations: No
Relative Humidity Rating 93%
Pollution Degree Classification PD 2
Maximum Altitude Rating 6561’ (2000 m)
Overvoltage Category (AC Input) 3
Overvoltage Category (DC Input) 1
–4°F to 122°F (–20°C to 50°C)
–40°F to 140°F (–40°C to 60°C)
70 900-0169-01-00 Rev A
Specifications
Temperature Derating
All FXR inverters can deliver their full rated wattage at temperatures up to 25°C (77°F). The FXR
maximum wattage is rated less in higher temperatures. Above 25°C, each inverter model is derated by
a factor of 1% of that model’s rated wattage for every increase of 1°C. This derating applies to all
power conversion functions (inverting, charging, selling, offsetting, etc.)
Figure 21 is a graph of wattage over temperature, showing the decrease in rated wattage with
increased temperature. The graph ends at 50°C (122°F) because the FXR inverter is not rated for
operation above that temperature.
Output Watts
3000
2500
2250
2000
1500
0
10°C
50°F
VFXR2612E
FXR2348E
20°C
68°F
25°C
77°F
VFXR3024E and VFXR3048E
FXR2024E and FXR2012E
30°C
86°F
40°C
104°F
1950
1725
Figure 21 Temperature Derating
Regulatory Specifications
Certifications
This product has been certified by ETL to meet the following standards:
IEC 62109-1:2010 — Safety of Power Converters for use in Photovoltaic Systems (2010)
EN 61000-6-1 — EMC Standard: Immunity for Residential, Commercial, and Light-Industrial Environments
EN 61000-6-3 — EMC Standard: Emissions for Residential, Commercial, and Light-Industrial Environments
EN 61000-3-3 — EMC Standard: Limitation of Voltage Changes, Voltage Fluctuations, and Flicker in Public
Low-Voltage Supply Systems
50°C
122°F
Compliance
RoHS: per directive 2011/65/EU
900-0169-01-00 Rev A 71
13
Specifications
These inverter/charger models have grid-interactive functions. All models are tested to comply with
certain limits for acceptable output voltage ranges, acceptable output frequency, total harmonic
distortion (THD) and anti-islanding performance when the inverter exports power to a utility source.
The OutBack inverter/charger models listed in this document are validated through compliance
testing. The following specifications refer to exporting power to a simulated utility source of less than
1% voltage total harmonic distortion (THD).
The THD of the root mean square (RMS) current is less than 5%.
The output of the FXR inverter exceeds the minimum power factor of 0.85 with a typical power factor of 0.96
or better.
The reconnection delay has a default setting of 5 minutes. The grid-interactive default settings are
shown in the
Grid Interface Protection Menu
portion of Table 22 on page 78.
The
Grid Interface Protection
installer-level access. The reason for this limitation is that there are firm rules concerning the
acceptable voltage range, frequency range, clearance time during power loss, and reconnect delay
when exporting power back to the utility. The rules differ in different locations around the world,
although generally it is expected that the settings cannot be altered by the end user. For this reason,
the installer password must be changed from the default to get access to these settings.
See the
Grid Tied
function on page 19 for more information.
settings are adjustable. However, this is only available to operators with
72 900-0169-01-00 Rev A
Specifications
Summary of Operating Limits
Severe conditions cause the inverter to limit its output or shut down for protection. The most
common conditions are high voltage, low voltage, and temperature. The limits for these conditions
are summarized in Table 19. See pages 62 and 64 for more information on these conditions and the
warning or error messages which accompany them.
Table 19 Operating Limits for all FXR Models
Voltage Limits 12-Volt Model 24-Volt Model 48-Volt Model
Limit Adjustable Off On Off On Off On
High Battery No >17 Vdc <17 Vdc >34 Vdc <34 Vdc >68 Vdc <68 Vdc
Low Battery (default) Yes >10.5 Vdc <12.5 Vdc >21.0 Vdc <25.0 Vdc >42.0 Vdc <50.0 Vdc
Temperature Limits
Limit
Over Temperature
Reduced charging or selling >120°C >90°C >90°C
Internal Fan
error
<125°C >125°C <95°C >95°C <95°C >95°C
<50°C >60°C <50°C >60°C <50°C >60°C
Transformer Output FETs Capacitors
Limiting Charge Current (Multiple Inverters)
It is not advisable to set
Charger AC Limit
less than 6 Aac in a stacked system. The Power Save
function requires the master to activates the slave chargers in sequence only when the charge current
exceeds 5 Aac. If the setting is less than 6, Power Save will not activate any other chargers. For more
information on this function, see the Power Save section beginning on page 46.
When the
Charger AC Limit
total. The total current equals the
setting is 6 Aac or more, other active chargers add the same amount to the
Charger AC Limit
setting times the number of active chargers. In
some systems, lower currents may be required due to battery bank size or other reasons. To achieve
lower currents, chargers can be individually set to
(The global
Charger Control On
only enables inverters not individually set to
so that the master inverter does not activate them.
Off
.) Combining the
Off
charger limit settings with a reduced number of chargers allows better control over the current.
In Table 20,
a battery bank.
provides recommendations for the smallest number of chargers in operation.
On
the inverter
. All other chargers should be turned off using the
on
Max Charge Adc
converts these values into AC amperes.
Aac
Charger AC Limit
shows examples of DC charging values which may be recommended for
recommends
Set
setting. Note that this table specifies the number of chargers to leave
Charger Control
menu item. (See the menu
tables beginning on page 76 to locate this command in the menu structure.)
The lowest Adc figures in this table allow for a single inverter to perform all charging. All other
inverters would be turned off. The highest Adc figures are for the maximum of ten stacked chargers.
The recommended settings ensure the charging will not exceed a designated current. The amount is
likely to be less.
900-0169-01-00 Rev A 73
Specifications
To determine the chargers and settings using Table 20:
Obtain the battery bank’s maximum charge current (in Adc) from the battery manufacturer.
1.
2. Locate the closest number to this amount (rounded down) on Table 20.
3. Read across to the entry for the appropriate inverter model.
4. Adjust the master inverter’s Charger AC Limit setting to the designated amount (in Aac).
5. Turn off the chargers for all inverters that exceed the number shown as On.
In a stacked system (using the HUB communications manager), chargers on higher-numbered HUB ports
should be turned off first. Slave chargers should be turned off before turning off any subphase masters.
(See page 43 for information on stacking.)
Table 20 Chargers On and Current Settings
Max
Charge
Adc
40 2 1 2 3 1 3 5 1 5 5 1 5 8 1 7 10 1 10
60 4 1 4 4 1 4 7 1 7 7 1 7 12 2 6 15 2 7
80 5 1 5 6 1 6 10 1 7 10 1 10 16 2 7 20 2 10
100 7 1 7 7 1 7 12 2 6 12 2 6 20 3 6 25 3 8
120 8 1 7 9 1 9 15 2 7 15 2 7 24 4 6 30 3 10
140 9 1 7 10 1 9 17 2 7 17 2 8 28 4 7 35 4 8
160 11 1 7 12 2 6 20 3 6 20 2 10 32 5 6 40 4 10
180 12 2 6 13 2 6 22 3 7 22 3 7 36 5 7 45 5 9
200 14 2 7 15 2 7 25 4 6 25 3 8 40 6 6 50 5 10
220 15 2 7 16 2 8 28 4 7 27 3 9 44 6 7 55 6 9
240 16 2 7 18 2 9 30 4 7 30 3 10 48 6 7 60 6 10
260 18 3 6 19 3 6 33 5 6 32 4 8 52 7 7 65 7 9
280 19 3 6 21 3 7 35 5 7 35 4 8 56 8 7 70 7 10
300 21 3 7 22 3 7 38 5 7 37 4 9 60 8 7 75 8 9
335 23 3 7 25 3 8 42 6 7 41 4 10 67 9 7 83 8 10
370 25 4 6 27 3 9 47 6 7 46 5 9 74 10 7 92 9 10
400 28 4 7 30 4 7 50 7 7 50 5 10 --435 30 5 6 32 4 8 55 7 7 54 6 9 --470 32 5 6 35 4 8 59 8 7 58 6 9 --500 35 5 7 37 4 9 63 9 7 62 6 10 --535 37 6 6 40 5 8 68 9 7 66 7 9 --570 39 6 6 42 5 8 72 10 7 71 7 10 --600 42 6 7 45 5 9 --640 44 6 7 48 6 8 --680 47 6 7 51 6 8 --720 50 7 7 54 6 9 --760 53 7 7 57 7 8 --800 56 8 7 60 7 8 --840 58 8 7 63 7 9 --880 61 8 7 66 8 8 --920 64 9 7 69 8 8 --960 67 9 7 72 8 9 ---
1000 70 10 7 75 8 9 --1050 --- --- --- 78 8 9 --1100 --- --- --- 82 9 9 --1150 --- --- --- 86 9 9 --1200 --- --- --- 90 10 9 ---
74 900-0169-01-00 Rev A
FXR2012E VFXR2612E FXR2024E VFXR3024E FXR2348E VFXR3048E
Aac On Set Aac On Set Aac On Set Aac On Set Aac On Set Aac On Set
100 10 10
--- --- ---
--- --- ---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
75 8 9 --80 8 10 --85 9 9 --90 9 10 --95 9 10 ---
100 10 10 ---
--- ---
---
--- ---
---
--- ---
---
--- ---
---
--- ---
---
--- ---
---
--- ---
---
--- ---
---
--- ---
---
---
---
---
---
---
---
---
---
---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
--- ---
Specifications
Calculating Limits
If other numbers are needed than those featured in Table 20, the results can be calculated. Do not use
the calculations on page 33, due to charger efficiencies and other factors.
To calculate the chargers and settings:
6. Look up the values for A, B, and C.
A = the battery bank’s maximum charge current (in Adc) from the battery manufacturer.
B = the maximum DC output of the appropriate inverter model. This is taken from Table 21.
C = the maximum AC input of the appropriate inverter model. This is taken from Table 21.
7. Select a value for D and perform the following calculation.
D = the
Charger AC Limit setting. This value must be 6 or higher. (See pages 48 and 73.) A higher
value uses fewer chargers and turns off all others. A lower value, or 6, leaves more chargers on.
8. Perform the following calculation.
__A__
(C) ÷ D = E
B
E = the number of chargers to use. This number should be rounded down in all cases.
9. Adjust the master inverter’s Charger AC Limit setting to equal D.
10. Turn off the chargers for all inverters that exceed E. In a system stacked on the HUB
communications manager, chargers on higher-numbered ports should be turned off first.
Chargers should be turned off by setting the Charger Control menu item to
Off. (See the menu
tables beginning on page 76 to locate this command in the menu structure.)
Table 21 Charge Currents for Calculations
Model Maximum DC Output (sent to battery) Maximum AC Input (used from source)
FXR2012E 100 Adc 7 Aac
VFXR2612E 120 Adc 9 Aac
FXR2024E 55 Adc 7 Aac
VFXR3024E 80 Adc 10 Aac
FXR2348E 35 Adc 7 Aac
VFXR3048E 40 Adc 10 Aac
Firmware Revision
This manual applies to inverter models with Revision 001.006.xxx or higher.
Updates to the inverter’s firmware are periodically available. These can be downloaded from the
OutBack website www.outbackpower.com. See page 14.
900-0169-01-00 Rev A 75
Specifications
Default Settings and Ranges
NOTES:
Certain items are retained at the present setting even when the inverter is reset to factory
defaults. These items are noted with the letter “X” in the Item column.
Certain items, particularly those in the Auxiliary menus, share common set points. If one of these
items is changed in a mode menu, all menus with this set point will show the same change.
Certain menus are only visible when the installer password is used, particularly the Grid Interface
Protection menu. These menus are bordered in the table with a double line of this style:
Table 22 FXR Settings for 12-Volt Models
Field Item Default Minimum Maximum
INVERTER
CHARGER
AC Input
Search
Hot Key
Hot Key
Hot Key
AC Input and
Current Limit
Grid AC Input
Mode and Limits
Gen AC Input
Mode and Limits
AC Output
Low Battery
Battery Charger
Inverter Mode Off On, Off, or Search
Charger Control On On or Off
AC Input Mode Use Drop or Use
Sensitivity (see page 28 for increments)
Pulse Length
Pulse Spacing
Input Type Grid Grid or Gen
Grid Input AC Limit
Gen Input AC Limit
Charger AC Limit
Input Mode Support Generator, Support, UPS, Backup, Mini Grid, Grid Zero
Voltage Limit Lower
(Voltage Limit) Upper
Transfer Delay
Connect Delay
If Mini Grid mode
is selected:
If Grid Zero mode
is selected:
Input Mode Generator Generator, Support, UPS, Backup, Mini Grid, Grid Zero
Voltage Limit Lower
(Voltage Limit) Upper
Transfer Delay
Connect Delay
If Mini Grid mode
is selected:
If Grid Zero mode
is selected:
Output Voltage X
Cut-Out Voltage
Cut-In Voltage
Absorb Voltage
(Absorb) Time
Float Voltage
(Float) Time
Re-Float Voltage
Re-Bulk Voltage
Connect to Grid
(Connect) Delay
DoD Volts
DoD
Amps
Connect to Grid
(Connect) Delay
DoD Volts
DoD
Amps
FXR2012E 6 Aac 0 Aac 7 Aac
VFXR2612E 8 Aac 0 Aac 9 Aac
FXR2012E 6 Aac 0.5 Aac 8 Aac
VFXR2612E 6 Aac 0.5 Aac 11 Aac
FXR2012E 6 Aac 0.5 Aac 8 Aac
VFXR2612E 6 Aac 0.5 Aac 11 Aac
30 0 200
8 AC Cycles 4 AC Cycles 20 AC Cycles
60 AC Cycles 4 AC Cycles 120 AC Cycles
30 Aac 2.5 Aac 30 Aac
30 Aac 2.5 Aac 30 Aac
208 Vac 170 Vac 230 Vac
252 Vac 232 Vac 290 Vac
1.0 second 0.12 seconds 4.0 seconds
0.2 minutes 0.2 minutes 25.0 minutes
12.0 Vdc 11.0 Vdc 16.0 Vdc
10 minutes 2 minutes 200 minutes
12.5 Vdc 11.0 Vdc 16.0 Vdc
208 Vac 170 Vac 230 Vac
252 Vac 232 Vac 290 Vac
1.0 second 0.12 seconds 4.0 seconds
0.5 minutes 0.2 minutes 25.0 minutes
12.0 Vdc 11.0 Vdc 16.0 Vdc
10 minutes 2 minutes 200 minutes
12.5 Vdc 11.0 Vdc 16.0 Vdc
120 Vac 100 Vac 130 Vac
10.5 Vdc 9.0 Vdc 12.0 Vdc
12.5 Vdc 10.0 Vdc 14.0 Vdc
14.4 Vdc 11.0 Vdc 16.0 Vdc
1.0 hours 0.0 hours 24.0 hours
13.6 Vdc 11.0 Vdc 16.0 Vdc
1.0 hours 0.0 hours 24/7
12.5 Vdc 11.0 Vdc 16.0 Vdc
12.0 Vdc 11.0 Vdc 16.0 Vdc
76 900-0169-01-00 Rev A
Specifications
Table 22 FXR Settings for 12-Volt Models
Field Item Default Minimum Maximum
Battery Equalize
Auxiliary Output
Inverter Stacking
Power Save
Ranking
Grid-Tie Sell
Calibrate
Equalize Voltage
(Equalize) Time
Aux Control Auto Off, Auto or On
Aux Mode Vent Fan
(Load Shed) ON: Batt >
(Load Shed ON) Delay
(Load Shed) OFF: Batt <
(Load Shed OFF) Delay
(Gen Alert) ON: Batt <
(Gen Alert ON) Delay
(Gen Alert) OFF: Batt >
(Gen Alert OFF) Delay
(Vent Fan) ON: Batt >
(Vent Fan) Off Delay
(DC Divert) ON: Batt >
(DC Divert ON) Delay
(DC Divert) OFF: Batt <
(DC Divert OFF) Delay
(AC Divert) ON: Batt >
(AC Divert ON) Delay
(AC Divert) OFF: Batt <
(AC Divert OFF) Delay
Stack Mode Master Master, Slave, B Phase Master, C Phase Master
Mode = Master: Master Power Save Level
Mode = Slave: Slave Power Save Level
Offset Enable Y Y or N
Sell Voltage
AC Input Voltage
AC Output Voltage X
Battery Voltage
Grid Interface Protection Menu
Operating Frequency
Stage 1 Voltage Trip13
Stage 2 Voltage Trip13
Frequency Trip13
Mains Loss13
Multi-Phase Coordination
Sell Current Limit
Operating Frequency
Over Voltage Clearance Time
Over Voltage Trip
Under Voltage Clearance Time
Under Voltage Trip
Over Voltage Clearance Time
Over Voltage Trip
Under Voltage Clearance Time
Under Voltage Trip
Over Frequency Clearance Time X
Over
Frequency Trip
Under Frequency Clearance Time
Under
Frequency Trip
Clearance Time
Reconnect Delay
Coordin. AC Connect/Disconn.
Maximum Sell Current
Model Select
60-Hz system
50-Hz system 50.5 Hz 50.1 Hz 55.0 Hz
60-Hz system
50-Hz system 49.3 Hz 45.0 Hz 49.9 Hz
14.6 Vdc 11.0 Vdc 17.0 Vdc
1.0 hours 0.0 hours 24.0 hours
Load Shed, Gen Alert, Fault, Vent Fan, Cool Fan,
DC Divert, GT Limits, Source Status, AC Divert
14.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
11.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
11.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
14.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
14.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
14.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
11.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
14.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
11.0 Vdc 10.0 Vdc 18.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
0 0 10
1 1 10
13.0 Vdc 11.0 Vdc 16.0 Vdc
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0 Vac –7 Vac 7 Vac
0 Vac –7 Vac 7 Vac
0.0 Vdc –0.2 Vdc 0.2 Vdc
50 Hz 50 Hz, 60 Hz
1.5 seconds 0.12 seconds 4.0 seconds
132 Vac 120 Vac 150 Vac
2.0 seconds 0.12 seconds 4.0 seconds
106 Vac 80 Vac 120 Vac
0.2 seconds 0.12 seconds 4.0 seconds
144 vac 120 Vac 150 Vac
0.16 seconds 0.12 seconds 4.0 seconds
60 Vac 60 Vac 120 vac
0.16 seconds 0.12 seconds 5.0 seconds
60.5 Hz 60.1 Hz 65.0 Hz
0.16 seconds 0.12 seconds 5.0 seconds
59.3 Hz 55.0 Hz 59.9 Hz
2.0 seconds 1.0 seconds 25.0 seconds
60 seconds 2 seconds 302 seconds
N Y or N
This selection inoperative in 12-volt models
Vented Vented or Sealed
13
The grid-interactive function is not available in 12-volt models. Adjusting these items will not affect operation.
900-0169-01-00 Rev A 77
Specifications
Table 23 FXR Settings for 24-Volt Models
Field Item Default Minimum Maximum
INVERTER
CHARGER
AC Input
Search
Hot Key
Hot Key
Hot Key
AC Input and
Current Limit
Grid AC Input
Mode and Limits
Gen AC Input
Mode and Limits
AC Output
Low Battery
Battery Charger
Battery Equalize
Inverter Mode Off On, Off, or Search
Charger Control On On or Off
AC Input Mode Use Drop or Use
Sensitivity (see page 28 for increments)
Pulse Length
Pulse Spacing
Input Type Grid Grid or Gen
Grid Input AC Limit
Gen Input AC Limit
Charger AC Limit
Input Mode Support
Voltage Limit Lower
(Voltage Limit) Upper
Transfer Delay
Connect Delay
If Mini Grid mode
is selected:
If Grid Zero mode
is selected:
Input Mode Generator
Voltage Limit Lower
(Voltage Limit) Upper
Transfer Delay
Connect Delay
If Mini Grid mode
is selected:
If Grid Zero mode
is selected:
Output Voltage X
Cut-Out Voltage
Cut-In Voltage
Absorb Voltage
(Absorb) Time
Float Voltage
(Float) Time
Re-Float Voltage
Re-Bulk Voltage
Equalize Voltage
(Equalize) Time
Connect to Grid
(Connect) Delay
DoD Volts
DoD
Amps
Connect to Grid
(Connect) Delay
DoD Volts
DoD
Amps
FXR2024E 6 Aac 0 Aac 7 Aac
VFXR3024E 9 Aac 0 Aac 10 Aac
FXR2024E 6 Aac 0.5 Aac 10 Aac
VFXR3024E 6 Aac 0.5 Aac 14 Aac
FXR2024E 6 Aac 0.5 Aac 10 Aac
VFXR3024E 6 Aac 0.5 Aac 14 Aac
30 0 200
8 AC Cycles 4 AC Cycles 20 AC Cycles
60 AC Cycles 4 AC Cycles 120 AC Cycles
30 Aac 2.5 Aac 30 Aac
30 Aac 2.5 Aac 30 Aac
Generator, Support, Grid Tied, UPS, Backup,
Mini Grid, Grid Zero
208 Vac 170 Vac 230 Vac
252 Vac 232 Vac 290 Vac
1.0 second 0.12 seconds 4.0 seconds
0.2 minutes 0.2 minutes 25.0 minutes
24.0 Vdc 22.0 Vdc 32.0 Vdc
10 minutes 2 minutes 200 minutes
25.0 Vdc 22.0 Vdc 32.0 Vdc
Generator, Support, Grid Tied, UPS, Backup,
Mini Grid, Grid Zero
208 Vac 170 Vac 230 Vac
252 Vac 232 Vac 290 Vac
1.0 second 0.12 seconds 4.0 seconds
0.5 minutes 0.2 minutes 25.0 minutes
24.0 Vdc 22.0 Vdc 32.0 Vdc
10 minutes 2 minutes 200 minutes
25.0 Vdc 22.0 Vdc 32.0 Vdc
230 Vac 200 Vac 260 Vac
21.0 Vdc 18.0 Vdc 24.0 Vdc
25.0 Vdc 20.0 Vdc 28.0 Vdc
28.8 Vdc 22.0 Vdc 32.0 Vdc
1.0 hours 0.0 hours 24.0 hours
27.2 Vdc 22.0 Vdc 32.0 Vdc
1.0 hours 0.0 hours 24/7
25.0 Vdc 22.0 Vdc 32.0 Vdc
24.0 Vdc 22.0 Vdc 32.0 Vdc
29.2 Vdc 22.0 Vdc 34.0 Vdc
1.0 hours 0.0 hours 24.0 hours
78 900-0169-01-00 Rev A
Specifications
Table 23 FXR Settings for 24-Volt Models
Field Item Default Minimum Maximum
Aux Control Auto Off, Auto or On
Load Shed, Gen Alert, Fault, Vent Fan, Cool Fan,
DC Divert, GT Limits, Source Status, AC Divert
Auxiliary Output
Inverter Stacking
Power Save
Ranking
Grid-Tie Sell
Mode = Master: Master Power Save Level
Mode = Slave: Slave Power Save Level
Calibrate
Aux Mode Vent Fan
(Load Shed) ON: Batt >
(Load Shed ON) Delay
(Load Shed) OFF: Batt <
(Load Shed OFF) Delay
(Gen Alert) ON: Batt <
(Gen Alert ON) Delay
(Gen Alert) OFF: Batt >
(Gen Alert OFF) Delay
(Vent Fan) ON: Batt >
(Vent Fan) Off Delay
(DC Divert) ON: Batt >
(DC Divert ON) Delay
(DC Divert) OFF: Batt <
(DC Divert OFF) Delay
(AC Divert) ON: Batt >
(AC Divert ON) Delay
(AC Divert) OFF: Batt <
(AC Divert OFF) Delay
Stack Mode Master Master, Slave, B Phase Master, C Phase Master
Offset Enable Y Y or N
Sell Voltage
AC Input Voltage X
AC Output Voltage X
Battery Voltage
28.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
22.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
22.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
28.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
28.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
28.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
22.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
28.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
22.0 Vdc 20.0 Vdc 36.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
0 0 10
1 1 10
26.0 Vdc 22.0 Vdc 32.0 Vdc
0 Vac –7 Vac 7 Vac
0 Vac –7 Vac 7 Vac
X
0.0 Vdc –0.4 Vdc 0.4 Vdc
Grid Interface Protection Menu
Operating Frequency
Stage 1 Voltage Trip
Stage 2 Voltage Trip
Frequency Trip
Mains Loss
Multi-Phase Coordination
Sell Current Limit
Model Select
900-0169-01-00 Rev A 79
Operating Frequency X
Over Voltage Clearance Time X
Over Voltage Trip X
Under Voltage Clearance Time X
Under Voltage Trip X
Over Voltage Clearance Time X
Over Voltage Trip X
Under Voltage Clearance Time X
Under Voltage Trip X
Over Frequency Clearance Time X
Over
Frequency Trip
Under Frequency Clearance Time X
Under
Frequency Trip
Clearance Time X
Reconnect Delay X
Coordin. AC Connect/Disconn.
Maximum Sell
Current
60-Hz system
50-Hz system 51.0 Hz 50.2 Hz 55.0 Hz
60-Hz system
50-Hz system 47.0 Hz 45.0 Hz 49.8 Hz
FXR2024E
VFXR3024E 10 Aac 2.5 Aac 14 Aac
X
X
X
X
50 Hz 50 Hz, 60 Hz
1.5 seconds 0.12 seconds 4.0 seconds
252 Vac 240 Vac 300 Vac
1.5 seconds 0.12 seconds 4.0 seconds
208 Vac 160 Vac 240 Vac
0.2 seconds 0.12 seconds 4.0 seconds
264 vac 240 Vac 300 Vac
0.2 seconds 0.12 seconds 4.0 seconds
196 Vac 1000 Vac 240 vac
0.2 seconds 0.12 seconds 5.0 seconds
61.0 Hz 60.2 Hz 65.0 Hz
0.2 seconds 0.12 seconds 5.0 seconds
57.0 Hz 55.0 Hz 59.8 Hz
2.0 seconds 1.0 seconds 25.0 seconds
60 seconds 2 seconds 302 seconds
N Y or N
10 Aac 2.5 Aac 10 Aac
Vented Vented or Sealed
Specifications
Table 24 FXR Settings for 48-Volt Models
Field Item Default Minimum Maximum
INVERTER
CHARGER
AC Input
Search
Hot Key
Hot Key
Hot Key
AC Input and
Current Limit
Grid AC Input
Mode and Limits
Gen AC Input
Mode and Limits
AC Output
Low Battery
Battery Charger
Battery Equalize
Inverter Mode
Charger Control On On or Off
AC Input Mode Use Drop or Use
Sensitivity (see page 28 for increments)
Pulse Length
Pulse Spacing
Input Type Grid Grid or Gen
Grid Input AC Limit
Gen Input AC Limit
Charger AC Limit
Input Mode Support
Voltage Limit Lower
(Voltage Limit) Upper
Transfer Delay
Connect Delay
If Mini Grid mode
is selected:
If Grid Zero mode
is selected:
Input Mode Generator
Voltage Limit Lower
(Voltage Limit) Upper
Transfer Delay
Connect Delay
If Mini Grid mode
is selected:
If Grid Zero mode
is selected:
Output Voltage X
Cut-Out Voltage
Cut-In Voltage
Absorb Voltage
(Absorb) Time
Float Voltage
(Float) Time
Re-Float Voltage
Re-Bulk Voltage
Equalize Voltage
(Equalize) Time
Connect to Grid
(Connect) Delay
DoD Volts
DoD
Amps
Connect to Grid
(Connect) Delay
DoD Volts
DoD
Amps
FXR2348E 6 Aac 0 Aac 7 Aac
VFXR3048E 9 Aac 0 Aac 10 Aac
FXR2348E 6 Aac 0.5 Aac 12 Aac
VFXR3048E 6 Aac 0.5 Aac 15 Aac
FXR2348E 6 Aac 0.5 Aac 12 Aac
VFXR3048E 6 Aac 0.5 Aac 15 Aac
Off On, Off, or Search
30 0 200
8 AC Cycles 4 AC Cycles 20 AC Cycles
60 AC Cycles 4 AC Cycles 120 AC Cycles
30 Aac 5 Aac 55 Aac
30 Aac 5 Aac 55 Aac
Generator, Support, Grid Tied, UPS, Backup,
Mini Grid, Grid Zero
208 Vac 170 Vac 230 Vac
252 Vac 232 Vac 290 Vac
1.0 second 0.12 seconds 4.0 seconds
0.2 minutes 0.2 minutes 25.0 minutes
48.0 Vdc 44.0 Vdc 64.0 Vdc
10 minutes 2 minutes 200 minutes
50.0 Vdc 44.0 Vdc 64.0 Vdc
Generator, Support, Grid Tied, UPS, Backup,
Mini Grid, Grid Zero
208 Vac 170 Vac 230 Vac
252 Vac 232 Vac 290 Vac
1.0 second 0.12 seconds 4.0 seconds
0.5 minutes 0.2 minutes 25.0 minutes
48.0 Vdc 44.0 Vdc 64.0 Vdc
10 minutes 2 minutes 200 minutes
50.0 Vdc 44.0 Vdc 64.0 Vdc
230 Vac 200 Vac 260 Vac
42.0 Vdc 36.0 Vdc 48.0 Vdc
50.0 Vdc 40.0 Vdc 56.0 Vdc
57.6 Vdc 44.0 Vdc 64.0 Vdc
1.0 hours 0.0 hours 24.0 hours
54.4 Vdc 44.0 Vdc 64.0 Vdc
1.0 hours 0.0 hours 24/7
50.0 Vdc 44.0 Vdc 64.0 Vdc
48.0 Vdc 44.0 Vdc 64.0 Vdc
58.4 Vdc 44.0 Vdc 68.0 Vdc
1.0 hours 0.0 hours 24.0 hours
80 900-0169-01-00 Rev A
Specifications
r
t
A
A
Table 24 FXR Settings for 48-Volt Models
Field Item Default Minimum Maximum
Aux Control Auto Off, Auto or On
Load Shed, Gen Alert, Fault, Vent Fan, Cool Fan,
DC Divert, GT Limits, Source Status, AC Divert
Auxiliary Output
Inverter Stacking
Power Save
Ranking
Grid-Tie Sell
Mode = Maste
Mode = Slave:
Calibrate
Aux Mode Vent Fan
(Load Shed) ON: Batt >
(Load Shed ON) Delay
(Load Shed) OFF: Batt <
(Load Shed OFF) Delay
(Gen Alert) ON: Batt <
(Gen Alert ON) Delay
(Gen Alert) OFF: Batt >
(Gen Alert OFF) Delay
(Vent Fan) ON: Batt >
(Vent Fan) Off Delay
(DC Divert) ON: Batt >
(DC Divert ON) Delay
(DC Divert) OFF: Batt <
(DC Divert OFF) Delay
(AC Divert) ON: Batt >
(AC Divert ON) Delay
(AC Divert) OFF: Batt <
(AC Divert OFF) Delay
Stack Mode Master Master, Slave, B Phase Master, C Phase Master
Master Power Save Level
:
Slave Power Save Level
Offse
Enable
Sell Voltage
C Input Voltage
C Output Voltage
Battery Voltage
56.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
44.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
44.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
56.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
56.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
56.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
44.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
56.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
44.0 Vdc 40.0 Vdc 72.0 Vdc
0.5 minutes 0.1 minutes 25.0 minutes
0 0 10
1 1 10
Y Y or N
52.0 Vdc 44.0 Vdc 64.0 Vdc
X
X
X
0 Vac –7 Vac 7 Vac
0 Vac –7 Vac 7 Vac
0.0 Vdc –0.8 Vdc 0.8 Vdc
Grid Interface Protection Menu
Operating Frequency
Stage 1 Voltage Trip
Stage 2 Voltage Trip
Frequency Trip
Mains Loss
Multi-Phase Coordination
Sell Current Limit
Operating Frequency
Over Voltage Clearance Time X
Over Voltage Trip X
Under Voltage Clearance Time X
Under Voltage Trip X
Over Voltage Clearance Time X
Over Voltage Trip X
Under Voltage Clearance Time X
Under Voltage Trip X
Over Frequency Clearance Time X
Over
Frequency Trip
Under Frequency Clearance Time
Under
Frequency Trip
Clearance Time
Reconnect Delay
Coordin. AC Connect/Disconn.
Maximum Sell
Current
60-Hz system
50-Hz system 51.0 Hz 50.2 Hz 55.0 Hz
60-Hz system
50-Hz system 47.0 Hz 45.0 Hz 49.8 Hz
FXR2348E
VFXR3048E 12 Aac 2.5 Aac 15 Aac
Model Select
900-0169-01-00 Rev A 81
X
X
X
X
X
X
X
X
50 Hz 50 Hz, 60 Hz
1.5 seconds 0.12 seconds 4.0 seconds
252 Vac 240 Vac 300 Vac
1.5 seconds 0.12 seconds 4.0 seconds
208 Vac 160 Vac 240 Vac
0.2 seconds 0.12 seconds 4.0 seconds
264 vac 240 Vac 300 Vac
0.2 seconds 0.12 seconds 4.0 seconds
196 Vac 160 Vac 240 vac
0.16 seconds 0.12 seconds 5.0 seconds
61.0Hz 60.2 Hz 65.0 Hz
0.2 seconds 0.12 seconds 5.0 seconds
57.0 Hz 55.0 Hz 59.8 Hz
2.0 seconds 1.0 seconds 25.0 seconds
60 seconds 2 seconds 302 seconds
N Y or N
12 Aac 2.5 Aac 12 Aac
Vented Vented or Sealed
Specifications
t
Definitions
The following is a list of initials, terms, and definitions used in conjunction with this product.
Table 25 Terms and Definitions
Term Definition
12V AUX Auxiliary connection that supplies 12 Vdc to control external devices
AC Alternating Current; refers to voltage produced by the inverter, utility grid, or generator
AGS Advanced Generator Start
CSA Canadian Standards Association; establishes Canadian national standards and the Canadian
Electrical Code, including C22.1 and C22.2
DC
DVM Digital Voltmeter
GND Ground; a permanent conductive connection to earth for safety reasons; also known as Chassis
Grid/Hybrid™
Grid-interactive,
grid-intertie, grid-tie
HBX High Battery Transfer; a function of the remote system display
IEEE Institute of Electrical and Electronics Engineers; refers to a series of standards and practices for the
IEC International Electrotechnical Commission; an international standards organization
Invert, inverting The act of converting DC voltage to AC voltage for load use or other applications
LBCO Low Battery Cut-Out; set point at which the inverter shuts down due to low voltage
NEC National Electric Code
NEU AC Neutral; also known as Common
Off-grid
PV Photovoltaic
RELAY AUX Auxiliary connection that uses switch (relay) contacts to control external devices
Direct Current; refers to voltage produced by the batteries or renewable source
Ground, Protective Earth, PE, Grounding Electrode Conductor, and GEC
System technology which optimizes both grid-interactive and off-grid options
Utility grid power is available for use and the inverter is a model capable of returning (selling)
electricity back to the utility grid
testing of electrical products
Utility grid power
available for use
is no
RTS Remote Temperature Sensor; accessory that measures battery temperature for charging
System display Remote interface device (such as the MATE3), used for monitoring, programming and
communicating with the inverter; also called “remote system display”
Three-phase, 3-phase A type of utility electrical system with three “hot” lines, each 120° out of phase;
each carries the nominal line voltage with respect to neutral; each carries voltage with respect to
each other equaling the line voltage multiplied by 1.732
Utility grid The electrical service and infrastructure supported by the electrical or utility company; also called
“mains”, “utility service”, or “grid”
82 900-0169-01-00 Rev A
1
12V AUX ................................................................................ 49
A
Absorption Stage ............................................................... 35
AC Input .................................................................... 9, 17, 29
AC Source Acceptance ..................................................... 30
AC Test Points .............................................................. 12, 57
Adding New Devices ........................................................ 13
Advanced Battery Charging ........................................... 35
AGS ......................................................................................... 52
Audience ................................................................................ 7
AUX......................................................................................... 49
AUX Functions
Cool Fan .......................................................................... 50
Diversion Control ......................................................... 50
Fault .................................................................................. 50
GenAlert ................................................................... 50, 52
GT Limits ......................................................................... 50
LoadShed ........................................................................ 49
Source Status ................................................................. 50
Summary Table ............................................................. 51
Vent Fan .......................................................................... 50
AXS Port ........................................................................... 9, 10
Index
New Bulk ......................................................................... 38
None ................................................................................. 35
Refloat .............................................................................. 36
Silent ................................................................................ 36
Steps .......................................................................... 35, 37
Charging Current ................................................. 34, 47, 73
Commissioning .................................................................. 11
Communications Manager
Stacking........................................................................... 44
Cool Fan ................................................................................ 50
D
Default Settings ................................................................. 76
Definitions ............................................................................ 82
Design ................................................................................... 27
Disconnect ........................................................................... 65
Diversion Control ............................................................... 50
DVM .......................................................................... 11, 12, 13
E
Equalization ......................................................................... 40
Errors ...................................................................................... 62
F
B
Backup ................................................................................... 22
Batteries ................................................................................ 27
Battery Charging ................................................................ 33
Current ............................................................................ 33
Graphs ............................................................... 34, 38, 39
Steps ................................................................................. 34
Battery Indicators .............................................................. 15
C
Caution Symbol .................................................................... 7
Charging
Absorption Stage ......................................................... 35
Current ............................................................................ 33
Float .................................................................................. 36
Float Stage ..................................................................... 36
900-0169-01-00 Rev A 83
Features .................................................................................. 8
Firmware........................................................................ 14, 75
FLEXnet DC .......................................................................... 15
Float Stage ........................................................................... 36
Functional Test ................................................................... 11
Functions ................................................................................ 8
AC Input Limit ............................................................... 29
AC Transfer ..................................................................... 32
Inverting.......................................................................... 27
LBCO .......................................................................... 27, 73
Offset ................................................................................ 42
Search .............................................................................. 28
G
GenAlert ......................................................................... 50, 52
Generator ............................................................................. 18
Sizing ................................................................................ 32
Generator Acceptance ..................................................... 30
Index
Grid Acceptance ................................................................ 30
Grid Interface Protection .............. 20, 31, 72, 77, 79, 81
Grid Tied ................................................... 19, 30, 64, 66, 72
Grid Use Time ............................................................... 22, 53
Grid-Interactive .................................................................. 19
GridZero ................................................................................ 23
GT Limits ............................................................................... 50
GT Warnings ........................................................................ 64
H
High Battery Cut-Out ................................................. 27, 73
High Battery Transfer (HBX) .................................... 22, 52
HUB10.3 ........................................................................... 9, 43
I
IEC 62109 ......................................................................... 9, 71
Important Symbol ............................................................... 7
Input Modes ..................................................... 8, 17, 29, 42
Summary Table ............................................................. 25
Input Priorities .................................................................... 29
Inverting ............................................................................... 27
L
LBCO (Low Battery Cut-Out) ................................... 27, 73
LED Indicators .............................................................. 15, 16
Load Grid Transfer ...................................................... 22, 53
LoadShed ............................................................................. 49
Low Battery Cut-In ..................................................... 27, 73
M
MATE3 ......................................................... 9, 10, 43, 55, 57
Mini Grid ........................................................................ 22, 52
Modes ...................................................................................... 8
Backup ............................................................................. 22
Generator ....................................................................... 18
Grid Tied................................................ 9, 19, 30, 66, 72
GridZero .......................................................................... 23
Mini Grid .................................................................. 22, 52
Summary Table ............................................................. 25
Support ........................................................................... 18
UPS .................................................................................... 21
Multi-Phase Coordination ............................................... 21
O
Offset ..................................................................................... 42
OPTICS RE ........................................................................ 9, 10
Output
Frequency ................................................................ 21, 28
Voltage ............................................................................ 28
84 900-0169-01-00 Rev A
P
Parallel Stacking ................................................................. 44
Power Save .......................................................................... 46
Powering Down ................................................................. 13
R
Ranks, Power Save ............................................................. 46
Relay AUX ............................................................................. 49
Remote Temperature Sensor (RTS) ............................. 41
RoHS ....................................................................................... 71
S
Safety ....................................................................................... 7
Search .................................................................................... 28
Sell Status ............................................................................. 66
Settings ................................................................................. 76
Silent
Charging ......................................................................... 36
Power Save .................................................................... 46
Source Status ...................................................................... 50
Specifications
Electrical .......................................................................... 67
Environmental .............................................................. 70
Mechanical ..................................................................... 70
Stacking .................................................................. 14, 43, 73
Charging ......................................................................... 33
Commissioning............................................................. 12
Input .......................................................................... 21, 31
Parallel ............................................................................. 44
Power Save ..................................................................... 47
Three-Phase ................................................................... 44
Startup ................................................................................... 11
Status Indicators ................................................................ 16
Support ................................................................................. 18
Switch .................................................................................... 10
Symbols Used ....................................................................... 7
System Display ................................................ 9, 43, 55, 57
Stacking........................................................................... 44
T
Temperature .................................................. 64, 70, 71, 73
Temperature Compensation ......................................... 41
Terms and Definitions ...................................................... 82
Test ......................................................................................... 11
Test Points ..................................................................... 12, 57
Three-Phase Stacking ....................................................... 44
Timers
Absorption ..................................................................... 35
Equalize ........................................................................... 40
Float .................................................................................. 37
Transfer Relay ............................................................... 29, 32
Inde
x
Troubleshooting ................................................................ 57
Disconnect Messages ................................................. 65
Error Messages .............................................................. 62
Sell Status Messages ................................................... 66
Warning Messages ...................................................... 63
U
Updating Firmware .................................................... 14, 75
UPS ......................................................................................... 21
V
Vent Fan Control ................................................................ 50
W
Warning Symbol .................................................................. 7
Warnings .............................................................................. 63
Website .......................................................................... 14, 75
900-0169-01-00 Rev A 85
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900-0169-01-00 Rev A
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Masters of the Off-Grid.™ First Choice for the New Grid.
Corporate Headquarters
17825 – 59
Suite B
Arlington, WA 98223 USA
+1.360.435.6030
900-0169-01-00 Rev A
th
Avenue N.E.
European Office
Hansastrasse 8
D-91126
Schwabach, Germany
+49.9122.79889.0
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