Growatt SPF 3500TL LVM-US User manual

Off Grid Solar Inverter
SPF 3000TL LVM-US
SPF 3500TL LVM-US
SPF 3500 US
SPF 5000 US
Version: 1.0
User Manual

Table Of Contents
1.0 Information on this Manual...................................................................................................................... 1
1.1 Validity ....................................................................................................................................................1
1.2 Scope ...................................................................................................................................................... 1
1.3 Target Group ...........................................................................................................................................1
1.4 Safety Instructions....................................................................................................................................1
2.0 Introduction ............................................................................................................................................. 2
2.1 Features ..................................................................................................................................................2
2.2 Product Overview .....................................................................................................................................3
3.0 Installation ............................................................................................................................................... 4
3.1 Unpacking and Inspection ......................................................................................................................... 4
3.2 Preparation ..............................................................................................................................................4
3.3 Mounting the Unit.....................................................................................................................................4
3.4 Battery Connection ...................................................................................................................................5
3.5 AC Input/Output Connection......................................................................................................................9
3.6 PV Connection........................................................................................................................................ 10
3.7 Final Assembly ....................................................................................................................................... 10
3.8 Communication Connection ..................................................................................................................... 11
3.9 Dry Contact Signal.................................................................................................................................. 11
4.0 Operation................................................................................................................................................ 12
4.1 Power ON/OFF ....................................................................................................................................... 12
4.2 Operation and Display Panel.................................................................................................................... 12
4.3 LCD Setting............................................................................................................................................ 15
4.4 Display Information ................................................................................................................................ 21
4.5 Operating Mode Description..................................................................................................................... 22
5.0 Parallel Installation Guide...................................................................................................................... 23
5.1 Introduction ........................................................................................................................................... 23
5.2 Mounting the Unit................................................................................................................................... 23
5.3 Wiring Connection .................................................................................................................................. 23
5.4 Parallel Operation in Single Phase ............................................................................................................ 25
5.5 Parallel Operation in Three Phase............................................................................................................. 27
5.6 Parallel Operation in Split Phase(Only for SPF 3000TL LVM-US /SPF 3500TL LVM-US)................................... 31
5.7 PV Connection........................................................................................................................................ 32
5.8 LCD Setting and Display .......................................................................................................................... 32
5.9 Commissioning ....................................................................................................................................... 32
6.0 Fault Reference Code ............................................................................................................................. 35
7.0 Warning Indicator .................................................................................................................................. 36
8.0 Battery Equalization ............................................................................................................................... 37
9.0 Specifications ......................................................................................................................................... 38
10.0 Trouble Shooting .................................................................................................................................. 41

1
1.0 Information on this Manual
1.1 Validity
This manual is valid for the following devices:
SPF 3000TL LVM-US
SPF 3500TL LVM-US
SPF 3500 US
SPF 5000 US
1.2 Scope
This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read
this manual carefully before installations and operations.
1.3 Target Group
This document is intended for qualified persons and end users. Tasks that do not require any particular
qualification can also be performed by end users. Qualified persons must have the following skills:
Knowledge of how an inverter works and is operated
Training in how to deal with the dangers and risks associated with installing and using electrical
devices and installations
Training in the installation and commissioning of electrical devices and installations
Knowledge of the applicable standards and directives
Knowledge of and compliance with this document and all safety information
1.4 Safety Instructions
WARNING: This chapter contains important safety and operating instructions.
Read and keep this manual for future reference.
1. Please be clear which kind of battery system you want, lithium battery system or lead-acid battery system, if
you choose the wrong system, energy storage system can’t work normally.
2. Before using the unit, read all instructions and cautionary marking on the unit, the batteries and all
appropriate sections of this manual. The company has the right not to quality assurance, if not according to
the instructions of this manual for installation and cause equipment damage.
3. All the operation and connection please professional electrical or mechanical engineer.
4. All the electrical installation must comply with the local electrical safety standards.
5. When install PV modules in the daytime, installer should cover the PV modules by opaque materials,
otherwise it will be dangerous as high terminal voltage of modules in the sunshine.
6. CAUTION-To reduce risk of injury, charge only deep-cycle lead-acid type rechargeable batteries and
lithium batteries. Other types of batteries may burst, causing personal injury and damage.
7. Do not disassemble the unit. Take it to a qualified service center when service or repair is required.
Incorrect re-assembly may result in a risk of electric shock or fire.
8. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning.
Turning off the unit will not reduce this risk.
9. NEVER charge a frozen battery.
10. For optimum operation of this inverter, please follow required spec to select appropriate cable size. It’s very
important to correctly operate this inverter.
11. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool
to spark or short circuit batteries or other electrical parts and could cause an explosion.
12. Please strictly follow installation procedure when you want to disconnect AC or DC terminals. Please refer to
INSTALLATION section of this manual for the details.
13. GROUNDING INSTRUCTIONS -This inverter should be connected to a permanent grounded wiring system.
Be sure to comply with local requirements and regulation to install this inverter.
14. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC input short
circuits.
15. Make sure the inverter is completely assembled, before the operation.

2
2.0 Introduction
Hybrid Power System
This is a multifunctional off grid solar inverter, integrated with a MPPT solar charge controller, a high
frequency pure sine wave inverter and a UPS function module in one machine, which is perfect for off grid
backup power and self-consumption applications. This inverter can work with or without batteries.
The whole system also need other devices to achieve complete running such as PV modules, generator, or
utility grid. Please consult with your system integrator for other possible system architectures depending on
your requirements. The WiFi / GPRS module is a plug-and-play monitoring device to be installed on the
inverter. With this device, users can monitor the status of the PV system from the mobile phone or from the
website anytime anywhere.
2.1 Features
Rated power 3KW to 5KW, power factor 1
High frequency inverter with small size and light weight
Pure sine wave AC output
Solar and utility grid can power loads at the same time
With CAN/RS485 for BMS communication
With the ability to work without battery
Parallel operation up to 6 unit (only with battery connected)
WIFI/ GPRS remote monitoring (optional)

3
2.2 Product Overview
1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
6. AC input
7. WiFi/GPRS communication port
8. USB communication port
9. BMS communication port (support CAN/RS485 protocol)
10. RS485 communication port (for expansion)
11. Dry contact
12. PV input
13. Power on/off switch
14. Battery input
15. Parallel communication ports
16. Current sharing ports
17. AC output
18. Circuit breaker

4
3.0 Installation
3.1 Unpacking and Inspection
Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should
have received the following items in the package:
The unit x 1
User manual x 1
Communication cable x 1
Current sharing cable x 1
Parallel communication cable x 1
Note: The Software CD is no longer provided, if necessary, please download it from the official website
www.ginverter.com
3.2 Preparation
Before connecting all wiring, please take off bottom cover by removing two screws as shown below.
3.3 Mounting the Unit
Consider the following points before selecting where to install:
Do not mount the inverter on flammable construction materials.
Mount on a solid surface
Install this inverter at eye level in order to allow the LCD display
to be read at all times.
The ambient temperature should be between 0°C and 55°C to
ensure optimal operation.
The recommended installation position is to be adhered to the
wall vertically.
Be sure to keep other objects and surfaces as shown in the right
diagram to guarantee sufficient heat dissipation and to have
enough space for removing wires.
SUITABLE FOR MOUNTING ON CONCRETE OR
OTHER NON-COMBUSTIBLE SURFACE ONLY.
Install the unit by screwing three screws. It’s recommended to use M4 or M5 screws.

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3.4 Battery Connection
3.4.1 Lead-acid Battery Connection
User can choose proper capacity lead acid battery with a nominal voltage at 48V. Also, you need to choose
battery type as “AGM(default) or FLD”
CAUTION!! For safety operation and regulation compliance, it’s requested to install a separate DC over-current
protector or disconnect device between battery and inverter. It may not be requested to have a disconnect
device in some applications, however, it’s still requested to have over-current protection installed. Please refer to
typical amperage in below table as required fuse or breaker size.
CAUTION!! The user should comply with local electrical installation regulations when wiring, and put the wires
in the cable bushing that matches the outlet hole of the inverter. Ring terminal:
WARNING! All wiring must be performed by a qualified person.
WARNING! It's very important for system safety and efficient operation to use
appropriate cable for battery connection. To reduce risk of injury, please use the
proper recommended cable and terminal size as below.
3.4.2 Recommended battery cable and terminal size:
Model
Wire Size
Torque value
SPF 3000TL LVM-US
1 * 4 AWG
2-3 Nm
SPF 3500TL LVM-US
1 * 4 AWG
2-3 Nm
SPF 3500 US
1 * 4 AWG
2-3 Nm
SPF 5000 US
1 * 2 AWG
2-3 Nm
Note: For lead acid battery, the recommended charge current is 0.2C(Cbattery capacity)
Please follow below steps to implement battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminal size.
2. Connect all battery packs as units requires. It’s suggested to connect at least 200Ah capacity battery for
SPF 3000TL LVM-US / SPF 3500TL LVM-US / SPF 3500 US / SPF 5000 US.
3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2Nm. Make sure polarity at both the battery and the inverter/charge is correctly
connected and ring terminals are tightly screwed to the battery terminals.
WARNING: Shock Hazard
Installation must be performed with care due to high battery voltage in series.
CAUTION!! Do not place anything between the flat part of the inverter terminal and the ring
terminal. Otherwise, overheating may occur.
CAUTION!! Do not apply anti-oxidant substance on the terminals before terminals are
connected tightly.
CAUTION!! Before making the final DC connection or closing DC breaker/disconnector, be sure
positive (+) must be connected to positive (+) and negative (-) must be connected to negative
(-).

6
3.4.3 Lithium Battery Connection
If choosing lithium battery for SPF 3000TL LVM-US / SPF 3500TL LVM-US / SPF 3500 US / SPF 5000 US, you are
allowed to use the lithium battery only which we have configured. There are two connectors on the lithium battery,
RJ45 port of BMS and power cable.
Please follow below steps to implement lithium battery connection:
1. Assemble battery ring terminal based on recommended battery cable and terminal size (same as Lead acid, see
section Lead-acid Battery connection for details) .
2. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2-3Nm. Make sure polarity at both the battery and the inverter/charge is correctly
connected and ring terminals are tightly screwed to the battery terminals.
3. Connect the end of RJ45 of battery to BMS communication port(RS485 or CAN) of inverter.
4. The other end of RJ45 insert to battery communication port(RS485 or CAN).
Note: If choosing lithium battery, make sure to connect the BMS
communication cable between the battery and the inverter. You need to
choose battery type as “lithium battery”.
3.4.4 Lithium battery communication and setting
In order to communicate with battery BMS, you should set the battery
type to “LI” in Program 5. Then the LCD will switch to Program 36, which
is to set the protocol type. There are several protocols in the inverter. Please get instruction from Growatt to choose
which protocol to match the BMS.
1. Connect the end of RJ45 of battery to BMS communication port of inverter
Make sure the lithium battery BMS port connects to the inverter is Pin to Pin, the inverter BMS port pin and RS485
port pin assignment shown as below:
Pin number
BMS port
RS485 port
(for expansion)
1
RS485B
RS485B
2
RS485A
RS485A
3
--
--
4
CANH
--
5
CANL
--
6
--
--
7
--
--
8
--
--
2. LCD setting
To connect battery BMS, need to set the battery type as “LI” in Program 05.
After set “LI” in Program 05, it will switch to Program 36 to choose communication protocol. You can choose RS485
communication protocol which is from L01 to L50, and you can also choose CAN communication protocol which is
from L51 to L99.

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05
Battery type
AGM (default)
Flooded
Lithium (only suitable when communicated with BMS)
User-Defined
If “User-Defined” is selected, battery charge voltage and low
DC cut-off voltage can be set up in program 19, 20 and 21.
User-Defined 2（suitable when lithium battery without BMS
communication）
If “User-Defined 2” is selected, battery charge voltage and low
DC cut-off voltage can be set up in program 19, 20 and 21. It is
recommended to set to the same voltage in program 19 and
20(full charging voltage point of lithium battery). The inverter
will stop charging when the battery voltage reaches this setting.
36
RS485
Communication protocol
Protocol 1
Protocol 2
.
.
.
.
.
.
Protocol 50
CAN
Communication protocol
Protocol 51
Protocol 52
.
.
.
.
.
.
Protocol 99
Note: When the battery type set to Li, the setting option 12, 13, 21 will change to display percent.
Note: When the battery type set as “LI”, the Maximum charge current can't be modified by the user. When the
communication fail, the inverter will cut off output.

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Note: Any questions about communicating with BMS, please consult with Growatt.
3. Communicating with battery BMS in parallel system
If need to use communicate with BMS in a parallel system, you should make sure to connect the BMS
communication cable between the battery and one inverter of the parallel system. It’s recommended to connect to
the master inverter of the parallel system.
3.5 AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between
12
Setting SOC point back to utility
source when selecting “SBU
priority” or “Solar first” in program
01
Default 50%, 6%~95% Settable
13
Setting SOC point back to battery
mode when selecting “SBU
priority” or “Solar first” in program
01
Default 95%, 10%~100% Settable
21
Low DC cut-off SOC
If “LI” is selected in program 5,
this program can be set up
Default 20%, 5%~50% Settable

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inverter and AC input power source. This will ensure the inverter can be securely disconnected during
maintenance and fully protected from over current of AC input. The recommended spec of AC breaker is 40A
for SPF 3000TL LVM-US /SPF 3500TL LVM-US /SPF 3500 US /SPF 5000 US.
CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input
and output connectors.
CAUTION!! The user should comply with local electrical installation regulations when wiring, and put the wires
in the cable bushing that matches the outlet hole of the inverter.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It’s very important for system safety and efficient operation to use appropriate cable for AC input
connection. To reduce risk of injury, please use the proper recommended cable size as below.
Suggested cable requirement for AC wires
Model
Gauge
Torque Value
SPF 3000TL LVM-US
1 * 8 AWG
1.2-1.6 Nm
SPF 3500TL LVM-US
1 * 8 AWG
1.2-1.6 Nm
SPF 3500 US
1 * 10 AWG
1.2-1.6 Nm
SPF 5000 US
1 * 8 AWG
1.2-1.6 Nm
Please follow below steps to implement AC input/output connection:
1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws. Be
sure to connect PE protective conductor first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
WARNING:
Be sure that AC power source is disconnected before attempting to hardwire it to the unit.
4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws.
Be sure to connect PE protective conductor first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)
5. Make sure the wires are securely connected.
CAUTION: Important
Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause
utility short-circuited when these inverters are worked in parallel operation.
CAUTION: Appliances such as air conditioner are required at least 2~3 minutes to restart because it’s
required to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and

10
recovers in a short time, it will cause damage to your connected appliances. To prevent this kind of damage,
please check with manufacturer of air conditioner that if it’s equipped with time-delay function before
installation. Otherwise, this off grid solar inverter will trig overload fault and cut off output to protect your
appliance but sometimes it still causes internal damage to the air conditioner.
3.6 PV Connection
CAUTION!! Before connecting to PV modules, please install separately a DC circuit breaker between inverter
and PV modules.
CAUTION!! The user should comply with local electrical installation regulations when wiring, and put the wires
in the cable bushing that matches the outlet hole of the inverter.
WARNING! All wiring must be performed by a qualified personnel.
WARNING! It’very important for system safety and efficient operation to use appropriate cable for PV module
connection. To reduce risk of injury, please use the proper recommended cable size as below.
Model
Wire Size
Torque value
SPF 3000TL LVM-US
1 * 12 AWG
1.2-1.6 Nm
SPF 3500TL LVM-US
1 * 12 AWG
1.2-1.6 Nm
SPF 3500 US
1 * 12 AWG
1.2-1.6 Nm
SPF 5000 US
1 * 12 AWG
1.2-1.6 Nm
PV Module Selection:
When selecting proper PV modules, please be sure to consider below parameters:
1. Open circuit Voltage (Voc) of PV modules not exceeds max. PV array open circuit voltage of inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.
Please follow below steps to implement PV module connection:
1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. Check correct polarity of connection cable from PV modules and PV input connectors. Then, connect positive
pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of connection
cable to negative pole (-) of PV input connector.
3. Make sure the wires are securely connected.
3.7 Final Assembly
After connecting all wiring, please put bottom cover back by screwing two screws as shown below.
INVERTER MODEL
SPF 3000TL LVM-US
SPF 3500TL LVM-US
SPF 3500 US
SPF 5000 US
Max. PV Array Open Circuit
Voltage
280Vdc
450Vdc
Start-up Voltage
150Vdc
PV Array MPPT Voltage Range
120Vdc~225Vdc
120Vdc~430Vdc

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3.8 Communication Connection
Please use supplied communication cable to connect to inverter and PC. Follow on-screen instruction to install
the monitoring software. For the detailed software operation, please check user manual of software. The
monitoring software is downloadable from our website www.ginverter.com.
3.9 Dry Contact Signal
There is one dry contact(3A/250VAC) available on the rear panel. It could be used to deliver signal to external
device when battery voltage reaches warning level.
Unit Status
Condition
Dry contact port:
NC & C
NO & C
Power Off
Unit is off and no output is powered
Close
Open
Power On
Output is powered from Utility
Close
Open
Output is
powered from
Battery or Solar
Program 01 set
as Utility first
Battery voltage (SOC)< Low DC
warning voltage(SOC)
Open
Close
Battery voltage(SOC) > Setting
value in Program 13 or battery
charging reaches floating stage
Close
Open
Program 01 is
set as SBU or
Solar first
Battery voltage (SOC)< Setting
value in Program 12
Open
Close
Battery voltage (SOC)> Setting
value in Program 13 or battery
charging reaches floating stage
Close
Open

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4.0 Operation
4.1 Power ON/OFF
Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch
(located on the button of the case) to turn on the unit.
4.2 Operation and Display Panel
The operation and display panel, shown in below chart, is on the front panel of the inverter. It includes
three indicators, four function keys and a LCD display, indicating the operating status and input/output
power information.
1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
4.2.1 LED Indicator
LED Indicator
Messages
Green
Solid On
Output is powered by utility in Line mode.
Flashing
Output is powered by battery or PV in battery mode.
Green
Solid On
Battery is fully charged.
Flashing
Battery is charging.
Red
Solid On
Fault occurs in the inverter.
Flashing
Warning condition occurs in the inverter.
4.2.2 Function Buttons
Button
Description
ESC
To exit setting mode
UP
To go to previous selection
DOWN
To go to next selection
ENTER
To confirm the selection in setting mode or enter setting mode

13
4.2.3 LCD Display Icons
Icon
Description
AC Input Information
AC input icon
Indicate AC input power, AC input voltage, AC input frequency, AC input
current
Indicate AC power loads in bypass
PV Input Information
PV input icon
Indicate PV power, PV voltage, PV current, etc
Output Information
Inverter icon
Indicate output voltage, output current, output frequency, inverter
temperature
Load Information
Load icon
Indicate power of load, power percentage of load
Indicate overload happened
Indicate short circuit happened
Battery Information
Indicate battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery
mode and charging status in line mode.
Indicate battery voltage, battery percentage, battery current
Indicate SLA battery
Indicate lithium battery
Indicate charging source priority: solar first, solar and utility, or only solar
Other Information
Indicate output source priority: solar first, utility first, SBU mode or SUB mode
Indicate warning code or fault code
Indicate a warning or a fault is happening
Indicate it’s during setting values
Indicate the alarm is disabled

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In battery mode, battery icon will present Battery Capacity
Load Percentage
Battery Voltage
LCD Display
Load >50%
< 1.717V/cell
1.717V/cell ~ 1.8V/cell
1.8 ~ 1.883V/cell
> 1.883 V/cell
50%> Load > 20%
< 1.817V/cell
1.817V/cell ~ 1.9V/cell
1.9 ~ 1.983V/cell
> 1.983
Load < 20%
< 1.867V/cell
1.867V/cell ~ 1.95V/cell
1.95 ~ 2.033V/cell
> 2.033
In AC mode, battery icon will present Battery Charging Status
Status
Battery voltage
LCD Display
Constant Current
mode / Constant
Voltage mode
<2V/cell
4 bars will flash in turns.
2 ~ 2.083V/cell
Bottom bar will be on and the other three bars
will flash in turns.
2.083 ~ 2.167V/cell
Bottom two bars will be on and the other two bars
will flash in turns.
> 2.167 V/cell
Bottom three bars will be on and the top
bar will flash.
Floating mode. Batteries are fully charged.
4 bars will be on.

15
4.3 LCD Setting
After pressing and holding ENTER button for 3 seconds, the unit will enter setting mode. Press “UP” or “DOWN”
button to select setting programs. Then press “ENTER” button to confirm the selection or ESC button to exit.
Program
Description
Setting Option
01
Output source priority: To
configure load power
source priority
Solar first
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, battery
energy will supply power the loads at the same time.
Utility provides power to the loads only when any one condition happens:
- Solar energy is not available
- Battery voltage drops to either low-level warning voltage or the setting
point in program 12.
Utility first (default)
Utility will provide power to the loads as first priority.
Solar and battery energy will provide power to the loads only when
utility power is not available.
SBU priority
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, battery will
supply power to the loads at the same time.
Utility provides power to the loads only when battery voltage drops to
either low-level warning voltage or the setting point in program 12.
SUB priority
Solar energy provides power to the loads as first priority.
If solar energy is not sufficient to power all connected loads, solar and
utility will power loads at the same time.
Battery provides power to the loads only when solar energy is not
sufficient and there is no utility.
02
Maximum charging current:
set total charging current for
solar and utility chargers.
(Max. charging current =
utility charging current +
solar charging current)
SPF 3000TL LVM-US: Default 60A, 10A~80A Settable
SPF 3500TL LVM-US: Default 60A, 10A~80A Settable
SPF 3500 US: Default 60A, 10A~80A Settable
SPF 5000 US: Default 60A, 10A~100A Settable
(If LI is selected in Program 5, this program can’t be set up)
03
AC input voltage range
Appliance (default)
If selected, acceptable AC input voltage range will be within:
SPF 3000TL LVM-US /SPF 3500TL LVM-US: 65~140VAC
SPF 3500 US /SPF 5000 US: 90~280VAC
UPS
If selected, acceptable AC input voltage range will be within:
SPF 3000TL LVM-US /SPF 3500TL LVM-US: 65~140VAC
SPF 3500 US /SPF 5000 US: 90~280VAC

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Generator(Only diesel generators allowed)
If selected, acceptable AC input voltage range will be within:
SPF 3000TL LVM-US /SPF 3500TL LVM-US: 65~140VAC
SPF 3500 US /SPF 5000 US: 90~280VAC
Note: When connecting generator, the generator should be no less than
10KVA(no less than 20KVA for three phase parallel system), and the
inverters should be no more than 2 units in one phase.
04
Power saving mode
enable/disable
Saving mode disable (default)
If disabled, no matter connected load is low or high, the on/off status of
inverter output will not be effected.
Saving mode enable
If enabled, the output of inverter will be off when connected load is pretty
low or not detected.
05
Battery type
AGM (default)
Flooded
Lithium (only suitable when communicated with BMS)
User-Defined
If “User-Defined” is selected, battery charge voltage and low DC cut-off
voltage can be set up in program 19, 20 and 21.
User-Defined 2（suitable when lithium battery without BMS
communication）
If “User-Defined 2” is selected, battery charge voltage and low DC cut-off
voltage can be set up in program 19, 20 and 21. It is recommended to set
to the same voltage in program 19 and 20(full charging voltage point of
lithium battery). The inverter will stop charging when the battery voltage
reaches this setting.
06
Auto restart when overload
occurs
Restart disable (default)
Restart enable
07
Auto restart when over
temperature occurs
Restart disable (default)
Restart enable
08
Output voltage
*This setting is only
available when the inverter
is in standby mode (Switch
off).
SPF 3500 US / SPF 5000 US
230V (default)
SPF 3500 US / SPF 5000 US
220V
SPF 3500 US /SPF 5000 US
240V
SPF 3500 US / SPF 5000 US
208V

17
SPF 3000TL LVM-US /
SPF 3500TL LVM-US
120V (default)
SPF 3000TL LVM-US /
SPF 3500TL LVM-US
110V
SPF 3000TL LVM-US /SPF 3500TL
LVM-US
100V
09
Output frequency
*This setting is only
available when the inverter
is in standby mode (Switch
off).
50Hz
60Hz
10
Number of series
batteries connected
(e.g. Showing batteries are connected in 4 series)
11
Maximum utility charging
current
Note: If setting value in
Program 02 is smaller
than that in Program 11,
the inverter will apply
charging current from
Program 02 for utility
charger
SPF 3000TL LVM-US :Default 30A, 0A~40A Settable
SPF 3500TL LVM-US :Default 30A, 0A~40A Settable
SPF 3500 US :Default 30A, 0A~60A Settable
SPF 5000 US :Default 30A, 0A~80A Settable
12
Setting voltage point back
to utility source when
selecting “SBU priority” or
“Solar first” in program 01
Default 46.0V, 44.0V~51.2V Settable
13
Setting voltage point back
to battery mode when
selecting “SBU priority”
or “Solar first” in program
01
Default 54.0V, 48.0V~58.0V Settable
14
Charger source priority:
To configure charger
source priority
If this off grid solar inverter is working in Line, Standby or Fault mode,
charger source can be programmed as below:
Solar first
Solar energy will charge battery as
first priority.
Utility will charge battery only when
solar energy is not available.
Solar and Utility
Solar energy and utility will both
charge battery.
Only Solar
Solar energy will be the only charger
source no matter utility is available
or not.
If this off grid solar inverter is working in Battery mode or Power saving
mode, only solar energy can charge battery. Solar energy will charge
battery if it's available and sufficient.

18
15
Alarm control
Alarm on (default)
Alarm off
16
Backlight control
Backlight on (default)
Backlight off
17
Beeps while primary
source is interrupted
Alarm on (default)
Alarm off
18
Overload bypass:
When enabled, the unit
will transfer to line mode
if overload occurs in
battery mode.
Bypass disable (default)
Bypass enable
19
C.V. charging voltage.
If self-defined is selected
In program 5, this
program can be set up
Default 56.4V, 48.0V~58.4V Settable
20
Floating charging voltage.
If self-defined is selected in
program 5, this program
can be set up
Default 54.0V, 48.0V~58.4V Settable
21
Low DC cut-off voltage.
If self-defined is selected in
program 5, this program can
be set up.
Low DC cut-off voltage will
be fixed to setting value no
matter what percentage of
load is connected.
Default 42.0V, 40.0V~48.0V Settable
When reach Low DC cut-off voltage:
1) If battery power is only power source available, inverter will shut down.
2) If PV energy and battery power are available, inverter will charge
battery without AC output.
3) If PV energy, battery power and utility are all available, inverter will
transfer to line mode and provide output power to loads, and charge the
battery at the same time.
23
AC output mode
*This setting is only
available when the inverter
is in standby mode (Switch
off).
Note: Parallel operation
can only work when battery
connected
Single:
Parallel:
L1 Phase:
L2 Phase:
L3 Phase:
L1 Phase:(Only for SPF 3000TL LVM-US / SPF 3500TL LVM-US)
L2 Phase: (Only for SPF 3000TL
LVM-US / SPF 3500TL LVM-US)
L2 Phase: (Only for SPF 3000TL LVM-
US / SPF 3500TL LVM-US)