Growatt SPF 3000TL LVM User manual

Off Grid Solar Inverter
SPF 3000TL LVM
Version: 4.0
User Manual

Table Of Contents
Information on this Manual............................................................................................................................1
Validity .............................................................................................................................................................. 1
Scope................................................................................................................................................................ 1
Target Group ..................................................................................................................................................... 1
Safety Instructions ............................................................................................................................................. 1
Introduction ...................................................................................................................................................2
Features ............................................................................................................................................................ 2
Product Overview............................................................................................................................................... 3
Installation .....................................................................................................................................................4
Unpacking and Inspection .................................................................................................................................. 4
Preparation........................................................................................................................................................ 4
Mounting the Unit .............................................................................................................................................. 4
Battery Connection............................................................................................................................................. 5
Lead-acid Battery Connection .......................................................................................................................... 5
Lithium Battery Connection ............................................................................................................................. 6
Lithium battery communication and setting ...................................................................................................... 6
AC Input/Output Connection............................................................................................................................... 9
PV Connection ..................................................................................................................................................10
Final Assembly ..................................................................................................................................................11
Communication Connection ...............................................................................................................................11
Dry Contact Signal ............................................................................................................................................11
Operation......................................................................................................................................................12
Power ON/OFF..................................................................................................................................................12
Operation and Display Panel ..............................................................................................................................12
LCD Display Icons..........................................................................................................................................13
LCD Setting...................................................................................................................................................15
Display Setting ..............................................................................................................................................20
Operating Mode Description ...........................................................................................................................23
Parallel Installation Guide............................................................................................................................25
Introduction......................................................................................................................................................25
Package Contents .............................................................................................................................................25
Parallel Board Installation ..................................................................................................................................25
Mounting the Unit .............................................................................................................................................27
Wiring Connection.............................................................................................................................................27
Parallel Operation in Single phase ......................................................................................................................28
Parallel Operation in Three Phase.......................................................................................................................31
Parallel Operation in Split Phase.........................................................................................................................34
PV Connection ..................................................................................................................................................36
LCD Setting and Display ....................................................................................................................................36
Commissioning..................................................................................................................................................36
Parallel in single phase...................................................................................................................................36
Parallel in three phase ...................................................................................................................................36
Parallel in split phase .....................................................................................................................................37
Fault Reference Code ...................................................................................................................................38
Warning Indicator ........................................................................................................................................39
Battery Equalization .....................................................................................................................................40
Specifications ...............................................................................................................................................41
Trouble Shooting ..........................................................................................................................................44

1
Information on this Manual
Validity
This manual is valid for the following devices:
SPF 3000TL LVM-24P;
SPF 3000TL LVM-48P;
Scope
This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read this
manual carefully before installations and operations.
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
Safety Instructions
WARNING: This chapter contains important safety and operating instructions.
Read and keep this manual for future reference.
1. CAUTION –Only qualified personnel can install this device with battery.
2. Before using the unit, read all instructions and caution marks on the unit, understand the batteries
and all appropriate sections of this manual.
3. NEVER cause AC output and DC input short circuited. Do NOT connect to the mains when DC
input short circuits.
4. NEVER charge a frozen battery.
5. 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.
6. To reduce risk of electric shock, disconnect all wiring before attempting any maintenance or cleaning.
Turning off the unit will not reduce this risk.
7. Be very cautious when working with metal tools on or around batteries. A potential risk, such as
dropping a tool to spark or short circuit batteries or other electrical parts, could cause an explosion.
8. For optimum operation of this off grid solar inverter, please follow required spec to select appropriate
cable size. It’s very important to correctly operate this off grid solar inverter.
9. 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.
10. GROUNDING INSTRUCTIONS –This off grid solar inverter should be connected to a permanent
grounded wiring system. Be sure to comply with local requirements and regulation to install this
inverter.
11. Fuses with provided standard are provided as over-current protection for the battery supply.
12. Warning!! Only qualified service persons are able to service this device. If errors still persist after
following troubleshooting table, please send this off grid solar inverter back to local dealer or service
center for maintenance.

2
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. The transformerless design provides reliable power
conversion in compact size.
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.
Features
24V/48V battery system
Pure sine wave output 3KW
Inbuilt MPPT 80A
High frequency inverter with small size and light weight
Overload, short circuit and deep discharge protection
Compatible to mains voltage or generator power
Parallel operation up to 6 unit
With CAN/RS485 for BMS communication
WIFI/ GPRS remote monitoring (optional)

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

4
Installation
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
USB Communication cable x 1
Current sharing cable (parallel model available)
Parallel communication cable (parallel model available)
Note: The Software CD is no longer provided, if necessary, please download it from the official website
www.ginverter.com
Preparation
Before connecting all wiring, please take off bottom cover by removing two screws as shown below.
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 NLY.
Install the unit by screwing three screws. It’s recommended to use M4 or M5 screws.

5
Battery Connection
Lead-acid Battery Connection
User can choose proper capacity lead acid battery with a nominal voltage at 48V for 48V model and at 24V
for 24 model.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.
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.
\
Recommended battery cable and terminal size:
Model
Maximum
Amperage
Battery
capacity
Wire Size
Ring Terminal
Torque
value
Cable
mm2
Dimensions
D (mm)
L (mm)
SPF 3000TL
LVM-24P
141A
200AH
1*2AWG
38
6.4
39.2
2~ 3 Nm
2*6AWG
28
6.4
33.2
SPF 3000TL
LVM-48P
71A
100AH
1*4AWG
22
6.4
39.2
2~ 3 Nm
200AH
2*8AWG
16
6.4
33.2
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 100Ah capacity battery for
3KVA/48V model and at least 200Ah capacity battery for 3KVA/24V model.
3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are
tightened with torque of 2-3 Nm. 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
Lithium Battery Connection
If choosing lithium battery for Growatt SPF series products, you are allowed to use the lithium battery only which
have configured. There're 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”.
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 protocals 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 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
--
--

7
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 battery type. There will be some options under
Program 36.
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

8
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.
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.
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 self-defined is selected in
program 5, this program can be
set up
Default 20%, 5%~50% Settable

9
AC Input/Output Connection
CAUTION!! Before connecting to AC input power source, please install a separate AC breaker between
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 3KVA.
CAUTION!! There are two terminal blocks with “IN” and “OUT” markings. Please do NOT mis-connect input
and output connectors.
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
8 AWG
1.4~ 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)

10
5. Make sure the wires are securely connected.
PV Connection
CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter
and PV modules.
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
Typical Amperage
Cable Size
Torque
SPF 3000TL LVM
80A
6 AWG
1.4~1.6 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.
Solar Charging Mode
INVERTER MODEL
SPF 3000TL LVM-24P
SPF 3000TL LVM-48P
Max. PV Array Open Circuit Voltage
145Vdc
145Vdc
PV Array MPPT Voltage Range
30~115Vdc
60~115Vdc
Min. battery voltage for PV charge
17Vdc
34Vdc
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.
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
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.
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.

11
Final Assembly
After connecting all wiring, please put bottom cover back by screwing two screws as shown below.
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.
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

12
Operation
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.
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
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.
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
LCD Display Icons
Icon
Function Description
Input Source Information
Indicates the AC input.
Indicates the PV input
Indicate input voltage, input frequency, PV voltage, battery voltage and
charger current.
Configuration Program and Fault Information
Indicates the setting programs.
Indicates the warning and fault codes.
Warning: flashing with warning code.
Fault:lighting with fault code
Output Information
Indicate output voltage, output frequency, load percent, load in VA, load in
Watt and discharging current.
Battery Information
Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery
mode and charging status in line mode.
These two signs indicate the charge priority. “SOLAR”indicates solar first.
“UTILITY”indicate utility first. “SOLAR”blinking indicates solar only; “SOLAR”
and “UTILITY”both on indicates combined charging.
In AC mode, it 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.
>2.167V/cell
Bottom three bars will be on and the
top bar will flash.
Floating mode Batteries are fully charged
4 bars will be on.

14
In battery mode, it 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
Load Information
Indicates overload.
Indicates the load level by 0-24%, 25-49%, 50-74% and 75-100%.
0%~24%
25%~49%
50%~74%
75%~100%
Mode Operation Information
Indicates unit connects to the mains.
Indicates unit connects to the PV panel.
Indicates load is supplied by utility power.
Indicates the utility charger circuit is working.
Indicates the DC/AC inverter circuit is working.
These three signs indicate the output priority. “SOL.FIRST”indicates solar
first. “BAT.FIRST”indicates battery first. “UTI.FIRST”indicates utility first.
Mute Operation
Indicates unit alarm is Enabled.

15
LCD Setting
After pressing and holding ENTER button for 3 seconds, it 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.
Setting Programs:
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
energy 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.
02
Maximum charging current: To
configure total charging current
for solar and utility chargers.
(Max. charging current = utility
charging current + solar
charging current)
24V model: default 60A, 10A~140A settable
48V model: default 60A, 10A~120A 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 65~140VAC
If selected, acceptable AC input voltage range
will be within 95~140VAC
(Only diesel generators
allowed)
If selected, acceptable AC input voltage range
will be within 65~140VAC. In this mode, the
Max. charging current is 30A.
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.

16
04
Power saving mode
enable/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)
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.
Flooded
Lithium
(Only suitable when communicated with BMS)
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
120V (default)
110V
100V
09
Output frequency
50Hz
60Hz (default)
10
Number of series batteries
connected
(e.g. Showing batteries are connected in 4 series)

17
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
24V model: default 30A, 0A~60A Settable
48V model: default 30A, 0A~40A Settable
12
Setting voltage point back to
utility source when selecting
“SBU priority” or “Solar first” in
program 01
24V model: default 23.0V, 22.0V~25.6V Settable
48V model: 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
24V model: default 27.0V, 24.0V~29.0V Settable
48V model: 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.
Utility first
Utility will charge battery as first priority.
Solar energy will charge battery only
when utility power 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.
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

18
19
C.V. charging voltage.
If self-defined is selected
In program 5, this program can
be set up
24V model: default 28.2V, 24.0V~29.2V Settable
48V model: 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
24V model: default 27.0V, 24.0V~29.2V Settable
48V model: default 54.0V, 48.0V~58.4V Settable
21
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.
24V model: default 21.0V, 20.0V~24.0V Settable
48V model: default 42.0V, 40.0V~48.0V Settable
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.
22
Solar power balance. When
enabled, solar input power will
be automatically adjusted
according to connected load
power.
Solar power balance
enable (Default):
If selected, solar input power will be
automatically adjusted according to the
following formula: Max. input solar power =
Max. battery charging power + Connected
load power.
Solar power balance
disable
If selected, the solar input power will be the
same to max. battery charging power no
matter how much loads are connected. The
max. battery charging power will be based
on the setting current in program 2.
(Max. solar power = Max. battery charging
power)
23
AC output mode
*This setting is only available
when the inverter is in standby
mode (Switch off).
Power saving function will be
automatically disabled when
in parallel operation.
Single mode
When not in parallel operation
Single phase
When the units are used in parallel
with single phase
Three phase: 3P1, 3P2, 3P3
It requires at least 3 inverters to support three-phase equipment, 1
inverter in each phase.
Please select “3P1” for the inverters connected to L1 phase, “3P2” for
the inverters connected to L2 phase and “3P3” for the inverters
connected to L3 phase.
Do NOT connect share current cable between units on different phases.
Split phase: 2P0, 2P1, 2P2
Select “2P0” for the inverters connected to L1 phase;
If connect split phase 120V/208V, select “2P1”for inverters connected
to L2 phase;
If connect split phase 120V/240V, select “2P2”for inverters connected
to L2 phase
Do NOT connect share current cable between units on different phases.