Dipower SAL 3.5KW UL Wall Mounted Off Grid Inverter User Manual

Dipower SAL 3.5KW UL Wall Mounted Off Grid Inverter

Product Usage Instructions

Safety Precautions
Before installing and operating the product, please ensure that you:

• Have the necessary skills and expertise to understand how the inverter works.
• Are familiar with electrical equipment installation and use hazards and risk avoidance.
• Are qualified to install and debug electrical equipment.
• Know how to apply safety standards and comply with all safety requirements.

Product Presentation
The product features include:

• Rated Power: 3.5KW or 5KW, Power Factor: 1
• MPPT Range: 120V~450V, Maximum PV Open Circuit Voltage: 500Vdc
• High Frequency Inverter, Small in Size and Light in Weight
• Solar Energy and Electric AC Power Supply System
• Supports Battery-Free Work
• Can be Operated in Parallel with up to 6 Inverters (Battery must be connected when combined)
• Communication Interfaces: CAN/RS485, WIFI/GPRS Remote Monitoring (Optional)

Product Overview
The product includes the following components:

• LCD Display
• Status Indicator
• Charge Indicator
• Fault Indicator
• Function Key
• Circuit Breaker
• AC Input Interface
• AC Output Interface
• USB Communication Interface
• RS485_1 Communication Interface
• RS485_2 Communication Interface
• CAN Communication Interface
• Dry Contact
• PV Input Interface
• Parallel Machine Streamline Interface
• ON/OFF On-Off Switch
• Battery Port

Installation

Out of the Box and Inspection
Before installing, please check the package and ensure that the following objects are included:

• Inverter x 1
• Manual x 1
• Parallel Machine Line x 1
• Parallel Communication Line x 1

Prepare Before Installation
Prior to wiring, remove the screws in the lower cover section of the upper panel of the machine and remove the lower cover.

Install and Fix
Consider the following points before selecting the installation location:

• Suitable for mounting on concrete or other non-combustible building material surfaces.
• Use M4 or M5 screws to securely install the inverter.

Battery Connection
To connect a lead-acid battery, follow these steps:

• Use a 48V lead-acid battery pack with the appropriate capacity (GLE colloidal lead-acid batteries are recommended by the factory).
• Ensure a DC overflow protection Disconnect is installed between the battery and the inverter for safety compliance.
• Use the recommended single machine circuit breaker rating of 140A for SAL 3.5KW_UL and 160A for SAL 5KW_EU.
• Only professionals should perform all wiring tasks.
• Use the correct cable and follow the recommended line and terminal specifications for safe and efficient operation.

FAQ

• Q: What are the communication interfaces available for this inverter?
  A: The inverter supports CAN/RS485 communication interfaces. WIFI/GPRS Remote Monitoring is also available as an optional feature.

• Q: Can I operate multiple inverters in parallel?
  A: Yes, you can operate up to 6 inverters in parallel. However, when combining them, make sure to connect the battery as well.

• Q: What is the recommended circuit breaker rating for the battery connection?
  A: For SAL 3.5KW_UL, a single machine circuit breaker rating of 140A is recommended. For SAL 5KW_EU, a rating of 160A is recommended.

Preface

Applicable products
This description applies to the following product models:

• SAL 3.5KW_UL
• SAL 5KW_EU

Overview
This manual describes the product architecture, installation guidance, operation guidance, and troubleshooting.

Please read the instructions carefully before installing and operating the product.

Target audience
This manual applies to qualified technicians or professional end users. Operators need the following skills:

• Understand how the inverter works
• Professional skills to deal with electrical equipment installation and use hazards and risk avoidance
• Have the expertise to install and debug electrical equipment
• Know how to apply safety standards
• Understand and follow the contents of this manual and comply with all safety requirements

safety precautions

Warning: This section contains important security and operational instructions. Please read carefully and keep this manual for future reference.

1. Please specify which lithium or lead-acid battery is used, and the system will not work if the wrong battery mode is set.
2. Read the inverter, the warning marker on the battery, and all warning instructions in this Manual before using the device. The Company shall have the right not to provide quality assurance, and the Supplier shall have the right not to give a warranty if the equipment is damaged by not being installed as described in this Manual.
3. Please have a professional electrician or mechanical engineer perform all operations and connect ions.
4. All electrical installations must comply with local electrical safety standards.
5. When installing photovoltaic modules during daylight hours, the installer should cover the photovoltaic modules with opaque materials; otherwise, the component’s end voltage in the sun is too high to be dangerous.
6. NOTE : Only rechargeable deep-cycle lead-acid and lithium batteries can be used to reduce injury risk. Other types of batteries may burst, causing personal injury and damage.
7. Do not remove this machine. Send it to a qualified service center if you need repairs or repairs. Incorrect reassembly can lead to the risk of electric shock or fire.
8. Disrupt all wires before attempting any maintenance or cleaning to reduce the risk of electrocution. Simply shutting down the device does not reduce the risk of electrocution.
9. Never charge a frozen battery.
10. For the inverter to work well, select the appropriate cable size for the required specifications. It is important to operate this inverter correctly.
11. Be very careful when using metal tools on or around batteries. Dropping tools can cause short circuits or sparks of storms or other electrical components and can cause explosions.
12. When disconnecting AC or DC terminals, follow the installation procedure strictly. See the installation section of this guide for more information.
13. Ground description : The inverter should be permanently grounded. Be sure to comply with local requirements and regulations to install this inverter.
14. Do not short-circuit AC output and DC input. Do not connect to ElectricAC power supply system supply power when DC enters a short circuit.
15. Ensure that the inverter is fully assembled before operating.

Product presentation

This multifunctional off-grid solar inverter integrates MPPT solar charging controller, high frequency pure sinusoidal inverter and a UPS function module. This inverter works with or without a battery.

The system requires additional equipment, such as photovoltaic modules, generators, or public power grids. Consult your system integrator at your request for other system components that may be used. The WiFi/GPRS module is a plug-and-play monitoring device installed on an inverter that allows the user to monitor the system’s status anytime, anywhere, through a mobile phone or web page.

Main features

• Rated power 3.5KW or 5KW, power factor 1
• MPPT range 120V~450V, maximum PV open circuit voltage 500Vdc
• High frequency inverter, small in size and light in weight
• Solar energy and Electric AC power supply system supply power can be carried at the same time.
• With CAN/RS485 available to communicate with BMS
• Support for battery-free work
• Can be operated in parallel with up to 6 (battery must be connected when combined)
• WIFI/GPRS Remote Monitoring (Optional)

product overview

1. LCD display
2. Status indicator
3. Charge indicator
4. Fault indicator
5. Function key
6. Circuit breaker
7. AC Input Interface
8. AC output interface
9. RS485_2 communication interface
10. USB communication interface
11. RS485_1communication interface
12. Dry contact
13. CAN communication interface
14. PV Input Interface
15. ON/OFF on-off
16. Parallel machine streamline interface
17. parallel communication line
18. Battery port

Installation

Out of the Box and Inspection
Check that the item is intact before installing it. Unpack the inverter to confirm that there is no damage in the package. Check to see if all of the following objects are included:

• Inverter x 1
• Manual x 1
• Parallel machine line x 1
• parallel communication line x 1

prepare before installation
Before wiring, remove the screws in the lower cover section of the upper panel of the machine and remove the lower cover.

Install and Fix
Consider the following points before selecting the installation location:

• Do not install inverters on flammable building materials.
• Mounted on solid walls.
• The installation height Electric AC power supply system supply as high as possible for ease of operation as the eye view.
• Ensure optimal operating conditions; ambient temperatures should be between 0 ° C and 55 ° C.
• It is recommended to attach the machine vertically to the wall.
• Ensure that there is some free space around the inverter, as shown in the right, to ensure adequate heat dissipation and sufficient space to move the cable

Suitable for mounting on concrete or other non-combustible building material surfaces.

As shown in the figure above, screws are screwed to secure the installation. M4 or M5 screws are recommended.

Battery Connection:

Lead-acid battery Connection
Users can use the right capacity 48 V lead-acid battery pack, which is the factory default for GLE colloidal lead-acid batteries.
Note! To operate safely and comply with safety requirements, a DC overflow protection
Disconnect is required between the battery and the inverter. A single machine circuit breaker recommends 140A for SAL 3.5KW_UL and 160A for SAL 5KW_EU.

Caution! Professionals must perform all wiring.
Caution! Using the right cable to connect the battery is important for the system to operate safely and efficiently. To reduce risk, use the correct line and terminal specifications recommended below.

Recommended battery cable and terminal specifications:

model

| Cable specifications|

Torque value

---|---|---
SAL 3.5KW_UL| 1 3AWG| 2-3 Nm
SAL 5KW_EU| 1 2 AWG| 2-3 Nm
---|---|---

Note! The recommended charging current for lead-acid batteries is 0.2C (battery capacity referred to as C)
Follow these steps to connect the battery:

1. Assemble the battery according to recommended battery cable and ring terminal specifications.
2. SAL 3.5KW_UL/SAL 5KW_EU recommend at least 200AH batteries as needed to connect all batteries.
3. Plug the annular terminal of the battery cable into the battery connection port of the inverter flat and ensure that the bolt is tightened at 2-3Nm torque. Ensure the polarity of the battery and inverter is properly connected, and pull the ring terminal to the battery terminal.

 | Caution! Electric shock hazard

Because the battery voltage in series is too high, care must be taken to install it.

---|---
 | Note! Do not place any items between the flat part of the inverter terminal and the ring terminal, otherwise it may cause a short circuit or overheat.

Note! Do not apply antioxidants to terminals until they are closely connected.

Note! Before making the final DC connection, ensure that the DC circuit breaker/isolation switch is disconnected, that the positive (+) must be connected to the positive (+) and the negative (-) must be connected to the negative (-).

---|---

Lithium battery Connection

if you match a lithium battery for a SAL 3.5KW_UL/SAL 5KW_EU inverter, only lithium batteries that already match the inverter protocol are allowed. There are two wiring ports on the lithium battery, the RJ45 interface for communication and the battery positive and negative power cord interface.
Follow these steps to operate the inverter to connect to the lithium battery:

1. Assemble battery ring terminals according to recommended battery cable and terminal specifications (as with lead-acid batteries, see lead-acid battery connect ion section for details)
2. Insert the annular terminal of the battery cable into the inverter’s battery connect or flat and ensure the bolt is tightened at 2-3Nm torque. Ensure the polarity of the battery and inverter is properly connect ed, and the ring terminal is pulled to the battery terminal.
3. Connected end of the RJ45 line to the inverter BMS communication interface (RS 485/CAN).
4. Plug the other end of the RJ45 line into the battery communication interface (RS485 or CAN).
   Note! If you choose a lithium battery and communicate with the inverter, ensure that the battery and inverter are connected using the RJ45 communication cable.

Use RJ45 wire to connect the battery end to the inverter end BMS communication interface.
Make sure that the lithium battery BMS interface corresponds to the pin of the inverter BMS communication interface. The inverter RS485 interface pin definition is shown below:

LCD screen parameter settings
If communicating with the battery BMS, the inverter item 8 program sets the corresponding lithium battery type, and then the battery manufacturer is selected for the 33 items.
Note: The inverter, RS485, can only select one of the protocol traffic.
Note: When battery mode is set to lithium battery, the maximum charge current is specified, Item 07 can be set manually.
Note: If communication fails when battery mode is set to lithium battery, the Li text flashes. Contact your vendor for any problems communicating with the BMS.

The system communicates with the battery BMS
Only one other inverter communicates with the battery BMS when the inverter is multiple and the host is recommended to share with the battery.

AC Input/Output Connection

• Note! Install a separate AC circuit breaker between the inverter and AC input power supply before connecting to the AC input power supplies. Ensures that the inverter is securely disconnected during maintenance and avoids AC input overload. Recommended specification 40A for inverter AC circuit breakers.
• Note! There are two fiber terminals with “IN” and “OUT” markings. Avoid incorrect input and output wiring or causing machine damage.
• Note! All wiring must be performed by professionals.
• Note  AC input connections using suitable cables are important for the safe and efficient operation of the system. To reduce the risk of injury, use the cable specifications recommended below.

Open Specification Recommendations for AC Input:

1. Follow these steps to perform an AC input/output connection:

2. Before making an AC input/output connect ion, make sure the DC protector or isolation switch is disconnected.

3. Peel off the insulated casing of 6 wires 10mm and cut the L and N wires 3 mm shorter.

4. Insert the AC input line as identified at the terminal and tighten the terminal screw. Be sure to Connect the PE protector first .

   • →Ground Line (Yellow-Green)
   • L→Fire-line (brown, black)
   • N→Zero Line (Blue)
     Note: Before connecting it to the device, ensure that the AC input is empty and disconnected to avoid electric shock.

5. Then insert the AC output line and tighten the port screws according to the identity at the terminal. Be sure to connect the PE protector first .

   • →Ground Line (Yellow-Green)
   • L→Fire-line (brown, black)
   • N→Zero Line (Blue)

6. Make sure the wires are well connected.

Note: AC wiring follows the identification. If the L and N lines are misfired, multiple parallel runs may result in a short circuit to the grid.
Note: Appliances such as air conditioners may take 2 ~ 3 minutes to restart because sufficient time is required to balance the refrigerant gas inside the circuit. If there is a power shortage and recovery in a short period, it will cause damage to the devices you connective. To prevent such damage, verify with the air conditioner that there is a delay before installation. Otherwise, the solar inverter triggers an overload failure and cuts the output to protect your device, but sometimes causes damage to the interior of the air conditioner.

PV connection
Note: Before connecting photovoltaic modules, install a DC circuit breaker between the inverter and the photovoltaic module.
Note! Professionals must perform all wiring.
Note! connecting photovoltaic modules with suitable cables is important for the safe and efficient operation of the system. To reduce system risk, use the correct cable specifications recommended below.

Photovoltaic Module Selection:

1. When selecting the appropriate photovoltaic modules, be sure to consider the following parameters:
2. PV open circuit voltage (Voc) does not exceed the maximum allowed open circuit voltage by the inverter.
3. PV open circuit voltage (Voc) configuration 360Vdc is optimal.

Follow these steps to connect the PV mode array.

1. Stripped 10 mm positive and negative conductor-insulated casing.
2. Check the correct polarity of the cable connect ion between the PV module and the PV input connector. Then connect the positive (+) of the cable to the positive (+) of the PV input connector. Connect the negative (-) of the line to the negative (-) of the PV input connector.
3. Make sure the wiring is firm.

Install Finishing Ends
When all the wires are connected, install the bottom cover back and screw.

Dry contact point
A dry node in the bottom port (1 A/250 VAC, 1A/125 VAC, 1A/30VDC) signals external devices when the battery voltage or capacity is low to a value. It is generally used to connect related external generators.

Equipment State

|

Condition

| Dry contact port:
---|---|---
NC & C| NO & C
Power-off| The device is turned off| off| on

Power-on

| Output by a Electric AC power supply system supply-electric bypass in the belt load| on| off
Carry working mode| Item 1 is the UTI mode| Electric AC power supply system supply power preferential load mode, switch to battery mode

when no Electric AC power

|

On

|

off

Setting Item 1 is in the “SUB” mode

| Battery Limited Load Mode. Switch to Electric AC power supply system supply load when battery voltage < Item 04 is set, then switch to battery load mode when battery voltage charge reaches 05. Set item

voltage point

|

off

|

on

---|---|---|---

The first set item is “SOL” mode

| Photovoltaic preferential band load, when no light volt input or battery voltage below 04 cell voltage point, switch to Electric AC power supply system supply band load|

off

|

on

Product operation;

Power switch ON/OFF
After installing and connecting the battery correctly, press the On/Off switch (bottom right corner) to turn the machine on.

Operation & Display
The operation and display panels shown in the following figure are located on the front panel of the inverter. It includes three LED’s, four function keys and an LCD to indicate operating status and input/output power information.

1. LCD display screen
2. Status indicator light
3. Charge lamp
4. Error indicator
5. function button

LED indicator light

LED

indicator

light

| ****

message

---|---

AC/INV

| yellow| fix| In Electric AC power supply system supply mode, the output is powered by Electric AC power supply system supply power
flash| In battery mode, the output is powered by a battery or PV

CHARGE

| green| fix| Full Battery
flash| battery is charging
FAULT| red| fix| Inverter malfunctions

Function button

LCD Display Information
The LCD display information is switched by pressing the “UP” or “DOWN” keys. Display information includes voltage, frequency, current, power, firmware version.

Input parameter

LCD display parameter setting
Indicates output voltage, output current, active output power, apparent output power, battery discharge current, and software version; In setup mode, displays the setting parameters under the currently set parameter item code.

Set the

item

| describe| Set options
---|---|---
00| Withdraw from| Exit setup menu
01| Output priority, configure the power supply priority| UTI: Electric AC power supply system supply band load priority mode, when there is no Electric AC power supply system supply, cut into the battery inverter belt load mode.SOL: Electric AC power supply system supply priority mode, switch to inverter only when city is invalid.

SBU: Inverse priority mode, only switch to Electric AC power supply system supply if the battery is under voltage or below the parameter [04] set value;

PV priority mode, switch to maidenhead PV is invalid or the battery is lower than the set value of parameter [04].

02| output frequency|

The bypass adapts to the Electric AC power supply system supply power frequency automatically when there is Electric AC power supply system supply power; When there is no Electric AC power supply system supply power. The output frequency can be set from this menu. 230V the machine to silence 50 Hz, 120V the

machine 60HZ by default.

03| AC input voltage range.| UPS default: 230V machine narrow range input city power voltage range 170 to 280 V

Electricity input range of 120V machine: 90~140V

APL：230V Machine wide range input Electric AC power supply system supply voltage range 90 to 280 V

Electricity input range of 120V machine: 90~140V

04| Battery to Electric AC power supply system supply electricity| Default 43.6V: In the parameter [01] =SBU, when the battery voltage is lower than the setting value, the output switches from inverter to city power, and the

setting range is 40 V to 52 V.

---|---|---
05| Used to battery| Default 57.6V: parameter [01] =SBU, the battery voltage is higher than the setting value, the output switch from

main to inverter, the setting range is 48V~60V.

06

|

Charging mode

| SNU default: photovoltaic and Electric AC power supply system hybrid charging, priority photovoltaic charging, photovoltaic energy is insufficient, Electric AC power supply system charging supplement. When the photovoltaic power is sufficient, the Electric AC power supply system power stops charging. Note: Only the Electric AC power supply system bypass output with load-on time volt and Electric AC power supply system can be charged at the same time. When the inverter works, the photovoltaic charging can only be started.

CSO: Photovoltaic charging is preferred, and only main supply is started when photovoltaic is invalid.

CUB: main supply is a priority, and PV charging is started only when Electric AC power supply system is invalid.

OSO: Only photovoltaic charging, not starting Electric AC power supply system charging.

07| Maximum charging current| Default 60A, set range 0~100A.
08| Battery type| USE ： User custom, can set all battery parameters.

SLd：Sealed lead-acid battery, constant voltage charging voltage 57.6V, floating charge voltage 55.2V.

FLd: Open-mouth lead-acid battery, constant voltage charging voltage 58.4V, floating charge voltage 55.2V.

GEL Default: colloidal lead-acid battery, constant

 |  | voltage charging voltage 56.8V, floating charge voltage 55.2V.

LF14 / LF15 / LF16: lithium iron phosphate battery LF16 / LF15 / LF14, corresponding to lithium iron phosphate battery 16,15 and 14,16 default constant voltage charging voltage 56.8V,

15 default constant voltage 53.2V, 14 default constant voltage 49.2V, can be adjusted.

N13 / N14: ternary lithium battery, adjustable. N13 default constant voltage charging voltage 53.2V,  N14  string  default  constant  voltage

charging voltage 57.6V.

---|---|---
09| Increase charging voltage| Default 57.8V, go-up charging voltage setting, set range 48V~58.4V, step 0.4V, battery type is custom and lithium battery is valid
10| Increase the maximum charging time| Default 120min, improve the maximum charging time setting, refers to the constant voltage charging when the maximum set voltage charging  time,  the  setting  range  of

5min~900min, step for 5 minutes.

11| floating charge voltage| Default 55.2V, floating charge voltage, set range 48V~58.4V, step 0.4V.
12| Over and over voltage| Default is 42V, the over discharge voltage, and the battery voltage is lower than the judgment point. After the delay parameter [13] is set for the time, the inverter output is closed, the set

range is 40V~48V, and the step is 0.4V.

13| Over time delay time| Default 5S, over release delay time, when the battery voltage is lower than the parameter [12], close the inverter output after the delay time of this parameter is set, with the setting range of 5S~50S, and step 5S.
14|

Battery under voltage alarm point

| Default 44V, battery under voltage alarm point, the battery voltage is below the judgment point, the under voltage alarm, output does not off, set

range 40V~52V, step 0.4V.

15| Battery discharge limit voltage| Default 40V, battery discharge limit voltage, battery voltage is below the judgment point, the
 |  | output is immediately off. Set the range is 40V~52V, the step is 0.4V, and the battery type is

custom and the lithium battery is valid.

---|---|---
16| equalizing charge| DIS，Equalized charging is prohibited.

ENA default, it enables balanced charging, only open lead-acid batteries and sealed lead-acid batteries are effective, and the custom (User) is effective.

17| Balanced charging voltage| Default 58.4V, balanced charging voltage, set range 48V~58.4V, step 0.4V, open lead-acid battery and sealed lead-acid battery effective,

and custom (User) valid.

18| Balanced charging time| Default 120, balanced charging time, set the range of 5min~900min, step for 5 minutes, open lead acid battery and sealed lead acid battery are effective.
19| Balanced charging delay| Default 240, balanced charging delay, set range of 5min~900min, step for 5 minutes, open lead acid battery and sealed lead acid battery valid,

and custom (User) valid

20| Equalize the charging interval time| Default 30, balanced charging interval time, 0~30days, step for 1 day, open lead acid battery and sealed lead acid battery effective, and custom (User) effective
21| Balanced charging enables| Default DIS, stop balanced charging immediately. ENA, start the balanced charging immediately.
22|

Energy saving mode

| Default DIS, prohibit energy saving mode.

ENA, after enabling the energy saving mode, if the load is empty or less than 50W, the inverter output delay after a period of time; when the load is greater than 50W, the inverter will automatically start.

23| Overload auto automatically| Default ENA enables overload and automatic restart. If overload shutdown output occurs, the machine will restart the output after 3 minutes delay. After accumulating 5 times, no longer resume the  boot.  DIS,  prohibit  overload automatic restart, if overload shutdown output occurs, the machine will not resume boot.
24| Over-temperature automatically re-star| Default ENA enables automatic restart of over temperature. If over temperature closes the output, the open output will be restarted after the temperature drops.

DIS, prohibit over temperature automatic restart, if over temperature turn off the output machine

no longer open the output.

---|---|---
25| buzzer warning| Default ENA, enabling the alarm

.DIS，No alarm.

26|

Mode conversion reminder

| Default ENA, which enables alarm prompts when the state of the main input source changes.

DIS，The alarm warning is prohibited when the status of the main input source changes

27| Inverse overload to bypass| Default ENA, automatically switch to the city power when inverter overload.

DIS ， Automatic power cutting is prohibited during inverter overload.

28| AC charging maximum current| Default 40A; EU series models, set range 0-60A, default 60 A. AC charging maximum charging current setting. UL series models, setting range 0~40A,
29| Output phase separation function| Default DIS, and disables this feature.

ENA, enabling the output with power frequency transformer.

30| Model ID Settings| Default 1, parallel mode needs to be set, set the range 1-6

31

|

AC Output Mode (available in standby mode only)

| SIG：Stand-alone usage settings items PAL: Single-phase parallel use settings.

2P0/2P1/2P2 ： Use      of    two-phase     parallel settings.

All machine screens connect ed to the P1 need to be set to “2P0”;

 |  | 1）Suppose that the output voltage set when the [38] setting item is 120Vac

2）When all machine screens connect ed to P2 are set to “2P1”, the voltage phase between P1 and P2 is 120 degrees, and the voltage between fire wire L1 of P1 and L2 of P2 is 120*1.732=208Vac; the voltage between L1-N and L2-N is 120 V a c.

When all machine screens connect ed to P2 are set to “2P2”, the voltage phase between P1 and P2 is 180 degrees, and the voltage between fire wire L1 of P1 and L2 of P2 phase is 120 * 2=240Vac; L1-N, and the voltage between L2-N is 120Vac.3P1/3P2/3P3：

Use setting item for three-phase parallel.

All machine screens connect ed to the P1 need to be set to “3P1”; All machine screens connect ed to the P2 are set to “3P2”; All machine screens connect ed to the P3 are set to “3P3”。

1） Suppose the output voltage set is 120Vac: At this time, the voltage phase difference between (P1-P2, P1-P3-P3, P2-P 3), and the voltage between P1 phase L1 and L2 of P2 is 120*1.732=208Vac, L1-L3, L2-L3 is 208Vac, L1-N,

L2-N, and L3-N is 120Vac.

Suppose the output voltage set when the [38] setting item is 230Vac:

At this time, the voltage phase difference between (P1-P2, P1-P3, P2-P3) is 120 degrees, and the voltage between P1 phase L1 and L2 of P2 is 230*1.732=398Vac, similarly L1-L3 and L2- L3 is 398Vac; the voltage between L1-N, L2-N

and L3-N is 230Vac

---|---|---
32| RS485communication function| Default     SLA,    RS485-1    Remote monitoring protocol. [32]    BMS ， RS485-2     BMS    Communication function.
33| BMS communication| When [32] sets the item =BMS, the corresponding lithium battery manufacturer brand should be selected for communication.

PAC= Peicheng, RDA= Ruida, AOG= Olympic, OLT= Eur, HWD= Xinwanda, DAQ= Daqin, PYL=

energy, UOL= no blue.

---|---|---
35| Low voltage Disconnect battery voltage recovery

point (04 fault)

| 52V default, when the battery low voltage disconnect ed inverter output, the battery voltage should be greater than this setting value to restore the battery inverter AC output.
36| PV Maximum charging current| 80A By default, the maximum solar charging current is set: 0~80A
37| Battery Recharge recovery point| By 52V default, after the battery is charged, the inverter stops charging. When the battery voltage is lower than this voltage value, the

charging is resumed.

38| AC output voltage gear setting| EU series models: 200 / 208 / 220 / 230 / 240Vac is available, and the default is 230Vac. AC output power = Rated power

• (set voltage / 230)

UL series models: 100 / 105 / 110 / 120Vac are available, with the default value of 120Vac. AC output power = Rated power * (set voltage / 120)

39| Stop charging

current

| By 2A default, when the charging current is less than the value, the charging stops
40| Discharge SOC

alarm setting

| By 15% default, When the capacity is low than 15%, SOC will alarm. (This parameter is valid when the BMS communication is normal),
41| Discharge         cut-off SOC setting| By 5% default, When the capacity is lower than this value, the discharge stops. (This parameter is valid when the BMS communication is normal),
42| Charging cut-off SOC setting| By 100% default, When the capacity is smaller than the preset value, stop charging. (This parameter is valid when the BMS communication is normal),
43| SOC setting of

switching to mains supply

| By 10% default, when capacity is lower than the preset value, switch to mains supply.(This parameter is valid when the BMS communication is normal),
---|---|---
44| SOC setting of

switching to inverter output

| By 100% default, when capacity is smaller than the preset value, switch to inverter output. (This parameter is valid when the BMS communication is normal),

Charging mode

1. PV priority: PV charging is preferred, and Electric AC power supply system charging only starts when the PV fails. Make full use of solar power during the day, transfer to market electricity at night, can maintain the battery charge.
2. Main supply first: main supply gives priority to charging batteries, and only start photovoltaic charging when Electric AC power supply system is invalid.
3. Hybrid charging: photovoltaic and Electric AC power supply system hybrid charging, priority photovoltaic MPPT charging, photovoltaic energy is insufficient, Electric AC power supply system supplement. When the photovoltaic power is sufficient, the Electric AC power supply system power stops charging.
4. Photovoltaic charging only (Only Solar): photovoltaic charging only, not the main supply, is charging to start. This way is the most energy-saving way; the battery power is from solar energy, used in areas with good light conditions.

Power supply mode

PV priority mode:
When the photovoltaic is invalid, switch to the Electric AC power supply system power supply and charging. The mode maximizes the use of solar energy while maintaining battery power and is suitable for relatively stable grid areas.
The priority of the power supply order realized is: Photovoltaic-electric AC power supply system-battery.

Municipal Electricity priority mode:
Only switch to battery inverter power supply when there are no Electric AC power supply system, and switch to Electric AC power supply system charging and power supply when there are Electric AC power supply system. The equipment is equivalent to a backup UPS and is used in areas with power grid instability. Switching does not affect photovoltaic charging. The priority of the power supply order realized is: Electric AC power supply system- photovoltaic-battery.

• Inverse priority mode：
  Only when the battery voltage is lower than the setting point (04 setting point), switch to the city power supply, and when the city power charging battery voltage is higher than the (05 set point), switch to the battery discharge mode, and cycle the battery is charged and discharged. This model uses maximum DC power for grid stability areas. Switching does not affect photovoltaic charging. (Photovoltaic-battery-Electric AC power supply system priority power supply order). The priority of the power supply order realized is: photovoltaic-battery-Electric AC power supply system.

• Mixed load and grid connection settings:
  Mixed belt load mode, in Electric AC power supply system mode, photovoltaic only priority charging, surplus energy supply load, not feed into the grid; grid connection function, in Electric AC power supply system mode, photovoltaic priority charging, residual energy function load and feed into the grid.

Parallel operating instructions
There are two parallel modes of the inverter

1. Single-phase parallel machine, up to 6 sets.
2. Three-phase parallel machine, up to 6 sets

NOTE: If the package has a parallel machine line and a parallel flow line, the inverter is the default with the parallel machine function. The parallel machine function will skip the following steps of installing the parallel machine board below. Machines without merge functions require additional merge kits and are installed by professionals in the next steps.

Packaging contents of parallel kit

• Step 1: screw the bottom cap and remove the cap.
• Step 2: Take the screw, remove the WiFi / GPRS communication board and CAN / RS485 communication board, and remove the 2-pin and 6-pin cables.
• Step 3: Take the screw, remove the 2-pin and 14pin wiring, and remove the baffle.
• Step 4: Take screw and remove the baffle at the communication interface
• Step 5: Install the parallel board
• Step 6: Reconnect 2-pin and 14-pin to the parallel board, and reconnect 2-pin and 6-pin to the communication board
• Step 7: Reinstall the communication board
• Step 8: Install the wiring cover back in

machine installation
When combining the machine for installation, in order to ensure normal heat dissipation, the machine should keep the following spacing (at least 20cm left and right, at least 50cm up and down) and install the machine on the same horizontal line.

The mode of connection
The recommended battery wire and terminal specifications for a single machine are as follows:

NOTE : Make sure that all battery cables have the same length. Otherwise, there will be a voltage difference between the inverter and the battery, resulting in the parallel inverter does not work normally. The cable of each inverter needs to be connected together. In the case of the battery cable: you need to use the connector or junction row as a connector and then connect to the battery terminal. The bus wire specification of the battery terminal shall be X times that of the wire specification in the table above, and “X” indicates the number of parallel inverters. Follow the same principle for usage specifications for AC input and output wire.
The wire specifications of each AC input and output recommended for a single machine are as follows:

Pay attention to it! The battery and the inverter, as well as between the AC input and the inverter, should be connect ed to the empty open so that you can protect from the current and can also ensure the safe disconnect ion of the line during maintenance.
The recommended empty opening specifications for the battery access end of a single machine are as follows:

*If only one total available battery end is connected to the whole parallel system, the size of the space will be X times that of a single one, and X represents the number of parallel machines. AC input recommends recommended open specification (single-phase parallel):

NOTE 1: SAL 3.5KW_UL, SAL 5KW_EU single set can be used 40A empty open, each inverter AC input terminal has to open an empty open.
NOTE 2: The three-phase parallel machine system can use the four poles for the three-phase similar machine system. The empty opening specification is based on the maximum current of which phase (the largest degree of the machine), or we can also use the practice of each access open opening above.

WARN! In the parallel system, all inverters must share a single battery pack. Otherwise, the machine will not work. Each photovoltaic panel module, should be independent of each other, not different machines share a photovoltaic module.

Single phase and machine operation
NOTE! All inverters shall be connected to the same battery pack, and the line length between each inverter and the battery is consistent.
Two inverters are operated in parallel:
system connection

Three-phase parallel operation
WARN! All inverters shall be connected to the same battery pack, and the line length between each inverter and the battery should be consistent.
One inverter per phase
system Connection

Fault code

protection

| Y
03| The battery was not alerted| Y
04| Battery under pressure alarm| Y
05| Battery over-current protection| Y
06| Charge over pressure protection| Y
07| Bus over pressure protection| Y
 |  |
---|---|---
08| Bus over pressure protection| Y
09| PV over voltage crowbar| N
10| BOOST over current protection| N
11| BOOST over current protection| N
12| Electric AC power supply system

power-fail

| N
13| Bypass overload protection| Y
14| Inverse overload protection| Y
15| Inverse over-current protection| Y
17| Inverse short circuit protection| Y
19| PV heat-sink over-temperature

protection

| N
20| Inverter radiator over-temperature

protection

| Y
21| Fan fault| Y
22| Storage failure| Y
23| Machine setup error| Y
26| Inverse over current recharge to

bypass AC output

| Y
29| Bus under pressure protection| Y
30| Battery capacity is 10% low for

alarm (BMS valid)）

| N
31| Battery capacity is 5% low for alarm

BMS valid

| N
32| Low    battery    capacity    shutdown

(BMS valid)

| Y
34| CAN communication fault (parallel

valid)

| Y
35| Parallel machine ID set error| Y
37| Parallel machine flow fault| Y
---|---|---
38| In the parallel machine mode, the

battery voltage difference is large

| Y
39| In parallel mode, the mains input

sources are inconsistent

| Y
40| Combined machine mode, hardware synchronization signal

failure

| Y
41| Inverse voltage DC component is

abnormal

| Y
42| The parallel version is inconsistent| Y
43| Parallel machine wiring failure| Y
44| No serial number is set from the

factory

| Y
45| [31] Set Item set error| Y
58| Check whether the communication line is connect ed correctly and whether [33] is set to the corresponding lithium battery

communication protocol

| N
59| After checking the type of lithium battery BMS fault, remove the

lithium battery fault

| N
60| Lithium-battery BMS low-

temperature alarm

| N
61| Lithium battery BMS over-

temperature alarm

| N
62| Lithium battery BMS, battery over

current alarm

| N
63| Lithium battery BMS battery under

voltage alarm

| N
66| Lithium battery BMS battery over

voltage alarm

| N

Balanced battery charging

The machine contains a balanced charging function; generally, Y is for water batteries. It can reverse some cumulative negative chemical effects, such as the stratification effect, where the acid concentration at the bottom of the battery is higher than at the top. Equilibrium also helps remove sulfate crystals that may accumulate on the plate; a condition called sulfation that reduces the overall battery capacity of the cell if not controlled. Therefore, it is recommended that the batteries be balanced regularly.

How to use the balanced charging function
First, select the balanced charging function in item 21. Then select the following method settings:

1. Item 20 sets the cycle balanced charging interval time
2. Item 21 setting starts balanced charging immediately

When do you start a balanced charging
In the floating charging stage, when the cycle equilibrium charging and the start time are set, or the equilibrium charging is fixed immediately, the charging will enter the equilibrium charging stage.

Balanced charging time and charging deadline time
During the balanced charging phase, the machine will charge the battery as much as possible until the battery voltage reaches the voltage point of the balanced charging. It then lasts for a period of stability at this voltage point until the set equilibrium charging time ends.

Suppose the equilibrium charging stage does not reach the equilibrium charging point until the end of the set equilibrium charging time. In that case, the machine will extend the equilibrium charging stage until the voltage point is reached. If Y’s compensation charging voltage point does not come within the set extended time, the machine will stop the equilibrium charging and return to the floating charging stage.

Parameter table
Table 1 Electric AC power supply system supply mode parameter information.

generator input voltage waveform
Rated input voltage| 120Vac| 230Vac
Low voltage cut voltage| 90Vac±7V (Appliances)| 170Vac±7V (UPS); (Appliances)
Return the voltage after the low voltage is cut off|

100Vac±7V(Appliances)

| 180Vac±7V (UPS); 100Vac±7V

(Appliances)

High voltage cut voltage| 140Vac±5V| 280Vac±7V
Return voltage after the high voltage is cut off|

130Vac±5V

|

270Vac±7V

Maximum AC input voltage| 150Vac| 300Vac
Rated input frequency| 50Hz / 60Hz (adaptation)
Low frequency cut-off point| 40±1Hz
Return point after a low-frequency cut-off|

42±1Hz

High frequency cut-off point| 65±1Hz
Return point after high frequency cut-off|

63±1Hz

Output short circuit protection| Circuit interrupter
Efficiency (bypass mode)| >95% (Based on the R loaded, the battery is full loaded )

Switching period

|

Normal 10ms, single mode 20ms, parallel mode 30ms

Output drop When the AC input voltage drops to 170V, the output starts to decrease|

Table 2 Inverter mode parameter information.

overload protection

| 5s@≥125% load ; 10s@110%~125% load| 5s@≥150% load ; 10s@110%~150% load
peak power| 2 x power rating for 5 seconds
Battery rated voltage| 48Vdc
open circuit losses| <50W（Energy saving mode）

Table 3 Parameter information of the charging mode.

Electric AC power supply system charging
Charging logic| 3 Sector charging
Maximum AC charging current| 40Amp(@VI/P=120Vac)| 60Amp(@VI/P=230Vac)

Generalized voltage

| water battery| 58.4Vdc
Other lead acid batteries| 56.8Vdc
floating charge voltage| 55.2Vdc
charging curve|
---|---
Photovoltaic charging mode
Maximum photovoltaic power processing capacity|

4500W

|

5500W

Maximum PV module input current| 22A
starting voltage| 120Vdc±10Vdc
MPPT voltage rage| 120Vdc~420Vdc| 120Vdc~450Vdc
Maximum PV open-circuit voltage| 450Vdc| 500Vdc
The inverter    reflux    photovoltaic module current| 0A
Maximum PV charging current| 80A| 100A
Maximum charging current (main+ PV)| 80A| 100A

Table 4: Basic Parameters.

Failure recovery

Fault

code

| Fault| Treatment measure
---|---|---

display

| ****

The screen is not displayed

| Check that the battery is open or the PV is available, YN is closed, the switch YN is in the “ON” state; press any button on the screen to exit the screen hibernation

mode.

【 06】

| ****

Charging battery over voltage protection

| Check that the battery voltage YN exceeds the protection value. When exceeding, the battery needs to be discharged to the voltage below the over

voltage recovery point.

【 01】

【 04】

| Battery under pressure protection| When the battery charging returns to the low voltage disconnect ed recovery

voltage is above.

【 21】

| ****

Fan fault

| Check that the fan YN does not turn or that the YN is blocked by something

else.

【 19】

【 20】

| Radiator over temperature protection| Resume normal charge and discharge control when the equipment temperature cools below the over

temperature recovery temperature.

【 13】

【 14】

| ****

overload protection

| ①     Reduce electricity and equipment;

②     Restart the all-in-one machine and

load restore the output

【 17】

| ****

Inverse short circuit protection

| ① Carefully check the load connect ion situation, and clear the short- circuit fault point;

② Power up again, and load back to

output.

【 09】

| ****

PV over voltage

| Check that the PV input voltage Y and Y does not exceed the maximum allowable

input voltage.

【 03】

| The battery was not alerted| Check that the battery YN is not connect ed or that the battery side circuit breaker

Y is not Y is not closed.

【 40】

【 43】

| Parallel machine wiring fault| Check that the parallel wire YN is not well connect ed, such as loose or

incorrect connect ion

【 35】| Parallel machine ID

set error

| The setting YN of the parallel ID number

is repeated

【 37】

| Parallel machine flow fault| Check that the parallel streamline YN is not well connect ed, such as: loose or

incorrect connection

---|---|---

【 39】

| Parallel machine mode| Electric AC input source inconsistent check the parallel main input Y does not

Y the same input interface

【 42】| The parallel version

is inconsistent

| Check that the software version of YNY is

consistent for each machine

NOTE: All power input sources must be disconnect ed when restarting the inverter. After the LCD screen lights go out, then only connect the battery to continue.

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