1. Safety
1.1 How to Use This Manual
This manual contains important information, guidelines, operation, and maintenance for the following products: ASF series 4880SH3, 48100SH3, 48120SH3.
This manual must be followed during installation, use, and maintenance.
1.2 Symbols in This Manual
| Symbols | Description |
| ⚠️ DANGER | DANGER indicates hazardous situations which if not avoided will result in death or serious injury. |
| ❗ WARNING | WARNING indicates hazardous situations which if not avoided could result in death or serious injury. |
| ⚠️ CAUTION | CAUTION indicates hazardous situations which if not avoided could result in minor or moderate injury. |
| ℹ️ NOTICE | NOTICE provides some tips on operation of products. |
1.3 Safety Instruction
⚠️ DANGER
- This chapter contains important safety instructions. Read and keep this manual for future reference.
- Be sure to comply with local requirements and regulations to install this inverter.
- Beware of high voltage. Please turn off the switch of each power source before and during the installation to avoid electric shock.
- For optimal operation of this inverter, select the appropriate cable size and the necessary protective devices as specified.
- Do not connect or disconnect any connections while the inverter is working.
- Do not open the terminal cover while the inverter is working.
- Make sure the inverter is well grounded.
- Be careful not to cause short-circuiting of the AC output and DC input.
- Do not disassemble this unit; for all repair and maintenance, please take it to a professional service center.
- Never charge a frozen battery.
2. Production Instructions
2.1 Instructions
The ASF H3 series is a new type of solar energy storage inverter control inverter integrating solar energy storage & utility charging and energy storage, with AC sine wave output. It adopts DSP control and features high response speed, reliability, and industrial standard through an advanced control algorithm.
2.2 Features
- Supports lead-acid battery and li-ion battery connections.
- With a dual activation function when the li-ion battery is dormant; either mains or photovoltaic power supply access can trigger the activation of the li-ion battery.
- Supports three-phase pure sine wave output (350~415V).
- Supports phase voltage adjustment in the range of 200, 208, 220, 230, 240Vac.
- Supports two PV inputs, with the function of simultaneously tracking the maximum power charging or carrying capacity of two MPPT.
- Dual MPPT, efficiency up to 99.9%, single maximum current of 22A, perfectly adapted to high-power modules.
- 2 charging modes are available: solar only and mixed mains and PV charging.
- With time-slot charging and discharging setting function, it helps users take advantage of peak and valley tariffs and save electricity costs.
- Energy-saving mode function to reduce no-load energy losses.
- With two output modes of utility bypass and inverter output, with uninterrupted power supply function.
- LCD large screen dynamic flow diagram design, easy to understand the system data and operation status.
- 360° protection with complete short-circuit protection, over-current protection, over-voltage protection, under-voltage protection, over-load protection, etc.
- Support CAN, USB, and RS485 communication.
2.3 System Connection Diagram
The diagram below shows the system application scenario of this product. A complete system consists of the following components:
- PV modules: converts light energy into DC energy, which can be used to charge the battery via an inverter or directly inverted into AC power to supply the load.
- Utility grid or generator: connected to the AC input; either the connected utility and generator can charge the battery while supplying the load. When the batteries and photovoltaic modules supply the load, the system can operate without the utility or generator.
- Battery: The role of the battery is to ensure the normal power supply of the system loads in case of insufficient photovoltaic and no utility power.
- Home load: connects to a variety of home and office loads including refrigerators, lamps, TVs, fans, air conditioners, and other AC loads.
- Inverter: it is the energy conversion device of the whole system.
The actual application scenario determines the specific system cabling.
Diagram Description: Diagram illustrating the components of a solar energy system: PV modules, Utility Grid/Generator, Battery, Home Load, and the Inverter, showing their interconnections.
2.4 Production Overview
Diagram Description: Front, side, and rear views of the SRNE inverter, detailing dimensions and labeling ports: 1. LCD screen, 2. LED indicator, 3. Touchable key, 4. ON/OFF switch, 5. PV input (PV1+PV2), 6. Battery (+), 7. Battery (-), 8. Dry contact, 9. RS485/CAN, 10. WIFI, 11. USB-B, 12. Grounding, 13. AC Output, 14. AC Input, 15. AC Input Circuit Breaker.
3. Installation
3.1 Select the Mount Location
ASF H3 series can only be used indoors (protection degree IP20). Please consider the followings before selecting the location:
- Choose a solid wall to install the inverter.
- Mount the inverter at eye level.
- Adequate cooling space must be provided for the inverter.
- The ambient temperature should be between -10~55℃ (14~131°F) to ensure optimal operation.
⚠️ DANGER
- Do not install the inverter near highly flammable materials.
- Do not install the inverter in a potentially explosive area.
- Do not install the inverter in a confined space with lead-acid batteries.
⚠️ CAUTION
- Do not install the inverter in direct sunlight.
- Do not install or use the inverter in a humid environment.
Diagram Description: Diagram showing recommended mounting clearances for the inverter: 200mm on sides, 500mm top and bottom, with dimensions 230mm width and 618mm height.
3.2 Mount the Inverter
Drill 4 mounting holes in the wall with an electric drill according to the specified dimensions, insert 2 expansion screws above and 2 M5 screws below to fix the inverter.
3.3 Remove Terminal Protection Cover and Dust Screen
Using a screwdriver, remove the terminal protection cover and dust screen.
ℹ️ NOTICE
- When using the device in areas with poor air quality, the dust screen is easily blocked by air particles. Please disassemble and clean the dust screen periodically to avoid affecting the internal air flow rate of the inverter, which may trigger an over-temperature protection fault (19/20 fault) affecting the use of the power supply and the service life of the inverter.
4. Connection
4.1 Three-phase Mode
| Items | Description |
| Applicable models | ASF series SH3 model |
| AC output phase voltage (L-N) | 200~240Vac, 230Vac default |
ℹ️ NOTICE
- The user can change the output phase mode and output voltage through the setup menu; please read chapter 5.2 for details.
- The output voltage corresponds to item [38] of the parameter setting, and the output phase voltage can be set within the range of 200V to 240V.
Diagram Description: Diagram illustrating three-phase AC output with voltage levels for L1, L2, L3, and N. A graph depicts the sinusoidal three-phase waveform.
4.2 Cable & Circuit Breaker Requirement
PV Input
| Models | Cable Diameter | Max. PV Input Current | Circuit Breaker Spec |
| ASF4880SH3 | 5mm²/10 AWG | 22A | 2P-25A |
| ASF48100SH3 | 5mm²/10 AWG | 22A | 2P-25A |
| ASF48120SH3 | 5mm²/10 AWG | 22A | 2P-25A |
AC Input
| Models | Output Mode | Max. Current | Cable Diameter | Circuit Breaker Spec |
| ASF4880SH3 | Three-phase | 23.2A | 6mm²/8 AWG(L1/L2/L3/N) | 4P-40A |
| ASF48100SH3 | Three-phase | 29A | 7mm²/8 AWG(L1/L2/L3/N) | 4P-40A |
| ASF48120SH3 | Three-phase | 35A | 9mm²/6 AWG(L1/L2/L3/N) | 4P-40A |
Battery
| Models | Cable Diameter | Max. Current | Circuit Breaker Spec |
| ASF4880SH3 | 34mm²/ 2 AWG | 180A | 2P-200A |
| ASF48100SH3 | 42mm²/ 1 AWG | 220A | 2P-250A |
| ASF48120SH3 | 50mm²/1 AWG | 260A | 2P-300A |
AC Output
| Models | Output Mode | Max. Current | Cable Diameter | Circuit Breaker Spec |
| ASF4880SH3 | Three-phase | 11.6A | 6mm²/8 AWG(L1/L2/L3/N) | 4P-40A |
| ASF48100SH3 | Three-phase | 14.5A | 7mm²/8 AWG(L1/L2/L3/N) | 4P-40A |
| ASF48120SH3 | Three-phase | 17.4A | 9mm²/6 AWG(L1/L2/L3/N) | 4P-40A |
PV input, AC input, AC output
- Use a stripper to remove the 6~8mm insulation of the cable.
- Fixing a ferrule at the end of the cable (ferrule needs to be prepared by the user).
Battery
- Use a stripper to remove the 6~8mm insulation of the cable.
- Fixing cable lugs that supply with the box at the end of the cable.
The wire diameter is for reference only. If the distance between the PV array and the inverter or between the inverter and the battery is long, using a thicker wire will reduce the voltage drop and improve the performance of the system.
4.3 AC Input & Output Connection
Connect the live, neutral, and ground cables in the position and order of the cables as shown in the diagram below.
Diagram Description: Diagram showing the terminal layout for AC input and AC output connections.
⚠️ DANGER
- Before connecting the AC input and output, the circuit breaker must be disconnected to avoid the risk of electric shock and must not be operated with electricity.
- Please check that the cable used is sufficient for the requirements; too thin, poor quality cables are a serious safety hazard.
4.4 Battery Connection
Connect the positive and negative cable of the battery according to the diagram below.
Diagram Description: Diagram showing the connection terminals for the battery, labeled BAT+ and BAT-.
⚠️ DANGER
- Before connecting the battery, the circuit breaker must be disconnected to avoid the risk of electric shock and must not be operated with electricity.
- Please ensure that the positive and negative terminals of the batteries are correctly connected and not reversed, otherwise the inverter may be damaged.
- Please check that the cable used is sufficient for the requirements; too thin, poor quality cables are a serious safety hazard.
4.5 PV Connection
Connect the positive and negative wires of the two strings of PV according to the diagram below.
Diagram Description: Diagram showing the connection terminals for PV inputs, labeled PV1+ PV1- PV2- PV2+.
⚠️ DANGER
- Before connecting the PV, the circuit breaker must be disconnected to avoid the risk of electric shock and must not be operated with electricity.
- Make sure that the open-circuit voltage of the PV modules connected in series does not exceed the maximum open-circuit voltage of the inverter (the value is 800V), otherwise the inverter may be damaged.
4.6 Dry Contact Connection
Use a small screwdriver to push back the direction indicated by the arrow, and then insert the communication cable into the dry junction port. (Communication cable cross section 0.2~1.5mm²)
4.7 Grounding Connection
Make sure that the earth terminal is securely connected to the grounding busbar.
ℹ️ NOTICE
- Grounding wire shall be not less than 4 mm² in diameter and as close as possible to the earthing point.
Diagram Description: Diagram highlighting the grounding screw terminal on the inverter.
4.8 Final Assembly
After ensuring that the wiring is reliable and the wire sequence is correct, restore the terminal protection cover to its original position.
4.9 Start-up the Inverter
- Step 1: Close the circuit breaker of the battery.
- Step 2: Press the ON/OFF switch on the bottom of the inverter; the screen and the indicator light come on to indicate that the inverter is activated.
- Step 3: Sequentially close the circuit breakers for PV, AC input, and AC output.
- Step 4: Start the loads one by one in order of power from small to large.
5. Operation
5.1 Operation and Display Panel
The operation and display panel below includes 1 LCD screen, 3 indicators, and 4 touchable keys.
Diagram Description: Illustration of the inverter's control panel, featuring an LCD screen, touchable keys, and LED indicators.
Touchable Keys
| Touchable keys | Description |
| ⌕ | To enter/exit the setting menu |
| ▲ | To next selection |
| ▼ | To last selection |
| ⏎ | To confirm/enter the selection in setting menu |
LED Indicators
| LED Indicators | Color | Description |
| AC/INV | Green | Always on: utility bypass output Flash: inverter output |
| CHARGE | Yellow | Always on: charging complete Flash: charging |
| FAULT | Red | Flash: fault occur |
Display Panel
Diagram Description: Detailed view of the inverter's LCD display icons, categorized by function: energy status (PV, AC, Battery), system status (standby, normal, alarm, communication), load/power indicators, battery SOC, voltage/current/frequency readings, protection indicators (under-voltage, over-load), battery type indicators, communication status, and operational modes (ECO, BYPASS, MAIN FIRST, SOLAR FIRST, BATT FIRST).
| Icon | Description | Icon | Description |
| 🔋 | Indicates the PV panel | 🔌 | Indicates the utility grid |
| 🔋 | Indicates the battery | 🏡 | Indicates the generator |
| ⌛ | Indicates the inverter is working | 🏠 | Indicates the home load |
| 💬 | Indicates the inverter is communicating with data collector | 🔐 | Indicates the buzzer muted |
| ➡➡➡➡➡➡➡➡ | Indicates the direction of energy flow | ✔️ | Indicates the inverter is working normally |
| 🕐️ | Indicates the inverter is standby | ⚙️ | Indicates setting |
| 🚨 | Indicates error occur |
| Icon | Description | Icon | Description |
| ■■■■ | Indicates load power 80%~100% | 🔋🔋🔋🔋 | Indicates battery SOC 80%~100% |
| ■■■ | Indicates load power 60%~79% | 🔋🔋🔋 | Indicates battery SOC 60%~79% |
| ■■ | Indicates load power 40%~59% | 🔋🔋 | Indicates battery SOC 40%~59% |
| ■ | Indicates load power 20%~39% | 🔋 | Indicates battery SOC 20%~39% |
| ■ | Indicates load power 5%~19% | 🔋 | Indicates battery SOC 5%~19% |
| UNDER VOLT | Indicates battery under-voltage | END OF DISCHG | Indicates battery discharge stops |
| OVER LOAD | Indicates over-load | BMS FAULT | Indicates BMS fault |
| COM | Indicates system communication error | UV | Indicates system under-voltage |
| OV | Indicates system over-voltage | UT | Indicates system under temperature |
| OT | Indicates system overtemperature | OC | Indicates system over-current |
| FULL | Indicates battery is full | USER | Indicates user defined battery |
| SLD | Indicates sealed lead-acid battery | FLD | Indicates flooded lead-acid battery |
| GEL | Indicates gel lead-acid battery | NCM | Indicates ternary li-ion battery |
| LFP | Indicates LFP li-ion battery | ECO | Indicates energy-saving mode |
| PV LOAD | Indicates PV energy is carrying the load | PV CHG | Indicates PV energy is charging the battery |
| AC CHG | Indicates AC IN energy is charging the battery | MAIN FIRST | Indicates the inverter output mode is mains power first |
| BYPASS | Indicates the inverter output mode is bypass | SOLAR FIRST | Indicates the inverter output mode is solar first |
| BATT FIRST | Indicates the inverter output mode is battery first |
View Real-time Data
In the main screen, press the UP / DOWN keys to view the real-time data of the inverter during operation.
Diagram Description: Flowchart showing navigation from Main Screen to View Real-Time Data via UP/DOWN keys. Illustration of the real-time data screen layout with pages for PV side, BAT side, AC IN side, LOAD side, and General information.
| Page | PV side | BAT side | AC IN side | LOAD side | General |
| 1 | PV input voltage | Batt Voltage | AC IN voltage | phase voltage | Current Time |
| 2 | PV input current | Batt Current | AC IN current | phase current | Current Date |
| 3 | PV input power | Batt Voltage | Total AC IN power | phase active power | PV Total kWh |
| 4 | PV today kWh | Batt Current | Today AC charging kWh | phase apparent power | Load Total kWh |
| 5 | PV side heat sink temperature | INV Heat Sink Temperature | AC frequency | AC output frequency | RS485 Address |
| 6 | Rated open-circuit voltage | Batt Rated Voltage | Busbar voltage | Rated output power | Soft Version |
| 7 | Max. PV charging current | Max.Batt charging current | Max. AC charging current | Total AC output active power | / |
| 8 | Total AC output apparent power | / |
5.2 Setting
Diagram Description: Flowchart illustrating the menu navigation for accessing and editing settings: Main Screen -> Set -> Enter Setup Menu -> View Parameter -> Edit Parameter -> Set Parameter -> Confirm Parameter. An example of parameter display is shown.
| Parameter ID | Meaning | Options | Description |
| 00 | Exit | ESC | Exit the setup menu. |
| 01 | AC output source priority | UTI default | Photovoltaic energy priority with the load; if photovoltaic is not enough, use grid power and photovoltaic mixed load. If photovoltaic energy is enough for the load, excess energy charges the battery. Grid power only starts charging when the battery is too discharged (06 Settings as "only PV"). The grid power will not charge; the battery is only discharged when off the grid. |
| SBU | Prioritizes the use of PV to power the load and switches back to the mains to power the load only when the battery voltage is lower than the set value in parameter item [4] (when connected to the BMS, according to item [61]). When the battery voltage is higher than the value set in parameter [5] (when connected to the BMS, according to item [62]), it switches back to the PV from the mains to supply the load. | ||
| SUB | Solar energy priority charging; insufficient solar energy, grid energy, and solar energy hybrid charging (if 06 Settings as "OSO(only PV)", the grid energy will not charge) and grid with load. When solar energy is enough to charge, excess energy not enough for load; excess solar energy and grid will hybrid load; the battery is discharged only when off the grid. | ||
| SOL | PV priority. Switching to mains to power the load when PV is not effective or when the battery is below the setting of parameter item [4]. | ||
| 02 | AC output frequency | 50.0 default 60.0 | In mains mode, the AC output frequency will adapt to the mains frequency; otherwise, the output will follow the preset values. |
| 04 | Voltage point of battery switch to utility | 43.6 default | When parameter [01]= SBU/SOL, output source will switch to utility from battery when the battery voltage is below the preset value. Setting range: 40~52V. |
| 05 | Voltage point of utility switch to battery | 57.6 default | When parameter [01]=SBU/SOL, output source will switch to battery from utility when the battery voltage is above the preset value. Range: 48~60V. |
| 06 | Battery charging mode | SNU default | Solar and utility charging the battery at the same time, solar at the first priority, utility power as a supplement when solar power is not sufficient. When solar power is sufficient, the utility stops charging. Note: The PV and mains can only be charged at the same time when the mains bypass output is loaded. When the inverter is operating, only PV charging can be initiated, not utility charging. |
| OSO | PV charging only | ||
| 07 | Battery charging current | 120A default | Corresponding to ASF4880SH3, setting range 0~180A. |
| Corresponding to ASF48100SH3, setting range 0~220A. | |||
| Corresponding to ASF48120SH3, setting range 0~260A. | |||
| 08 | Battery type | USER | User-defined; user can set all battery parameters. |
| SLd | Sealed lead-acid battery. | ||
| FLd | Flooded lead-acid battery. | ||
| GEL default | Gel lead-acid battery. | ||
| L14/L15/L16 | L14/L15/L16 lithium iron phosphate batteries, corresponding to lithium iron phosphate batteries 14, 15, 16 series. | ||
| N13/ N14 | Ternary lithium batteries, N13/N14, corresponding to ternary lithium batteries 13 series, 14 series. | ||
| No bat | No battery | ||
| 09 | Battery boost charging voltage | 57.6 default | Setting range 48V~58.4V, step 0.4V, valid when battery type is custom and lithium battery. |
| 10 | Boost charging maximum time | [10] 120 default | Boost charging maximum time setting, means setting of maximum charge time of voltage when the voltage reaches parameter [09] from 5min~900min at 5-minute step. |
| 11 | Battery float charging voltage | 55.2 default | Setting range 48V~58.4V, step 0.4V; this parameter cannot be set after the BMS communication is successful. |
| 12 | Battery over-discharge voltage (delay powering off) | 42 default | When the battery voltage is lower than the judgment point and triggers parameter [13], the inverter output is switched off; the setting range is 40V~48V, the step is 0.4V, valid when battery type is custom and lithium battery. |
| 13 | Battery over-discharge delay time | 5 default | The battery voltage is lower than parameter [12], and the inverter output is switched off after triggering the delay time set in this parameter; the setting range is 5S~50S, the step is 5S, valid when battery type is custom and lithium battery. |
| 14 | Battery under-voltage alarm point | 44 default | When the battery voltage is lower than this judgment point, the device will under-voltage alarm; the output will not be switched off; the setting range is 40V~52V, the step is 0.4V, valid when battery type is custom and lithium battery. |
| 15 | Battery discharge limiting voltage | 40 default | When the battery voltage is lower than the value of this parameter item, the output will be switched off immediately. Setting range 40V~52V, step 0.4V, valid when battery type is custom and lithium battery. |
| 16 | Battery equalization charging | DIS ENA default | Disable equalization charging. Enable equalization charging, valid when battery type is FLd, SLd, and USER. |
| 17 | Battery equalization charging voltage | 56.8 | Setting range 48V~58V in 0.4V steps, valid when battery type is FLd, SLd, and USER. |
| 18 | Battery equalization charging duration | 120 | Setting range 5min~900min in 5 minute steps, valid when battery type is FLd, SLd, and USER. |
| 19 | Battery equalization charging delay time | 240 | Setting range 5min~900min in 5 minute steps, valid when battery type is FLd, SLd, and USER. |
| 20 | Battery equalization charging interval | 30 | Setting range 0~30days in 1 day steps, valid when battery type is FLd, SLd, and USER. |
| 21 | Battery equalization charging stop-start | DIS default ENA | Stop equalization charging immediately. Start equalization charging immediately. |
| 22 | Energy-saving mode | DIS default | Disable energy-saving mode. |
| 23 | Overload automatic restart | ENA | Enable energy-saving mode; when the load power is less than 25W, the output of the inverter will switch off after a 5-minute delay. When the load exceeds 25W, the inverter will restart automatically. |
| DIS | Disable overload automatic restart; if an overload occurs to shut down the output, the machine will not be restored to power on again. | ||
| 24 | Over-temperature automatic restart | ENA default | Enable overload automatic restart. If an overload occurs that shuts down the output, the machine delays for 3 minutes before restarting the output. After accumulating 5 times, it will not restart again. |
| DIS | Disable over-temperature automatic restart; if over-temperature occurs to switch off the output, the machine no longer switches on the output. | ||
| 25 | Buzzer alarm | ENA default | Enable over-temperature automatic restart; if over-temperature occurs, the output is switched off; it will be switched on when the temperature drops. |
| DIS | Disable buzzer alarm. | ||
| 26 | Mode change alert | ENA default | Enable buzzer alarm. |
| DIS | Disable alert when the status of the main input source changes. | ||
| 27 | Inverter overload switch to bypass | ENA default | Enable alert when the status of the main input source changes. |
| Options | Description | ||
| 27 | Inverter overload switch to bypass | DIS ENA default | Disable automatic switching to mains to power the load in the event of an inverter overload. Automatic switching to mains to power the load in the event of an inverter overload. |
| 28 | Utility charging current | 100A | Corresponds to ASF4880SH3, setting range 0~100A. |
| 120A | Corresponds to ASF48100SH3, setting range 0~120A. | ||
| 120A | Corresponds to ASF48120SH3, setting range 0~120A. | ||
| 30 | RS485 communication address | ID:1 | RS485 address setting range: 1~254. |
| 32 | RS485 communication | SLA default | Disable BMS communication. |
| 485 | RS485 BMS communication function. | ||
| CAN | CAN BMS communication function. | ||
| 33 | BMS communication | WOW default | When item [32] = 485/CAN, the corresponding lithium battery manufacturer brand should be selected for communication. 485 protocol: PAC=PACE, RDA=RITAR, AOG=ALLGRAND, OLT=OLITER, CEF=CFE, XYD=SUNWODA, DAQ=DYNESS, WOW=SRNE, PYL=PYLONTECH, POW=POWMr, UOL=VILION. CAN protocol: UZE=YUZE |
| 34 | On-grid and hybrid power supply load | DIS default ON GRD | Disable this function. When parameter [01]=UTI, the solar energy is given priority charging, and when the load demand is met, the remaining power will be fed back to the grid. |
| 35 | Battery under-voltage recovery point | 52 | When the battery is under-voltage, the battery voltage needs to be higher than this setting value in order to restore the battery inverter AC output, setting range: 44V~54.4V. |
| 37 | Recharge voltage point after battery is full | 52 | Inverter stops charging when the battery is full. Inverter resumes charging when the battery voltage is below this value. Setting range: 44V~54V. |
| 38 | AC output phase voltage | 230 | Setting range: 200/208/220/230/240Vac. |
| 39 | Charging current limiting method (when BMS is enabled) | [SET] [BMS] Default [INV] | The maximum battery charging current is limited according to the setting in [07]. Maximum battery charging current is limited according to the current limit value of the BMS. Maximum battery charging current is limited by the machine's derating logic. |
| ID | Parameter Meaning | Options | Description |
| 40 | 1st time slot start mains charging / carrying loads | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 41 | 1st time slot end mains charging / carrying loads | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 42 | 2nd time slot start mains charging / carrying loads | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 43 | 2nd time slot end mains charging / carrying loads | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 44 | 3rd time slot start mains charging / carrying loads | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 45 | 3rd time slot end mains charging / carrying loads | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 46 | Time slot mains charging / carrying loads function | DIS default | Disable this function. |
| ENA | When the time slot mains charging / carrying loads function is enabled, the power supply mode will change to SBU and switch to mains charging only during the set charging period or when the battery is over-discharged. If the time slot discharging function is enabled at the same time, the system power supply mode will change to UTI, and will only switch to the mains for charging during the set charging period, and switch to the battery inverter power supply during the set discharging period or when the mains is outaged. | ||
| 47 | 1st time slot start battery discharging | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 48 | 1st time slot end battery discharging | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 49 | 2nd time slot start battery discharging | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 50 | 2nd time slot end battery discharging | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 51 | 3rd time slot start battery discharging | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| ID | Parameter Meaning | Options | Description |
| 52 | 3rd time slot end battery discharging | 00:00:00 | Setting range: 00:00:00-23:59:00. |
| 53 | Time slot battery discharging function | DIS default | Disable this function. |
| ENA | When the time slot battery discharging function is enabled, the power supply mode will be switched to UTI, and the system will switch to battery inverter power supply only during the set discharge period or when the mains is outaged. | ||
| 54 | Local date | 00:00:00 | YY/MM/DD. Setting range: 00:01:01-99:12:31. |
| 55 | Local time | 00:00:00 | Setting range: 00:00:00-23:59:59. |
| 56 | Leakage current detection protection | DIS default | Disable detecting Leakage current value. |
| ENA | Enable detecting Leakage current value. | ||
| 57 | Stop charging current | 3 | Charging stops when the charging current is less than this setting (unit: A). |
| 58 | Discharging alarm SOC setting | 15 | Triggers an alarm when the battery SOC is less than the set value (unit:%, valid only when BMS communication is normal). |
| 59 | Discharging cut-off SOC setting | 5 | Stops discharging when the battery SOC is less than the set value (unit:%, valid only when BMS communication is normal). |
| 60 | Charging cut-off SOC setting | 100 | Stops charging when the battery SOC is higher than the set value (unit:%, valid only when BMS communication is normal). |
| 61 | Switching to utility SOC setting | 10 | Switch to utility power when the battery SOC is less than this setting value (unit:%, valid only when BMS communication is normal). |
| 62 | Switching to inverter output SOC setting | 100 | Switches to inverter output mode when SOC is higher than this setting value (unit:%, valid only when BMS communication is normal). |
| 63 | N-PE bonding automatic switching function | DIS default | Disable automatic switching of N-PE connections. |
| ENA | Enable automatic switching of N-PE connections. | ||
| 67 | On grid max power | 0 default | You can set the max on-grid power (less than the inverter rated power). |
| 70 | Insulation impedance detection | DIS default | Disable detecting insulation impedance value. |
| ENA | Enable detecting insulation impedance value. |
5.3 Time-slot Charging/Discharging Function
The ASF H3 series is equipped with a time-slot charging/discharging function. Users can set different charging/discharging time slots according to local peak and valley electricity prices, to make efficient use of utility power and PV energy. When the utility price is expensive, the battery inverter can be used to supply power to the loads. When the utility price is cheap, the utility power can be used to supply and charge the loads, which can help users save the electricity bill to the greatest extent. Users can turn on/off the time-sharing charging/discharging function in the setting menu parameters [46] and [53], and set the charging and discharging time periods in parameters [40-45], [47-52] for timed mains charging start/time setting and timed battery discharging start/time setting. Here is a case example to help users understand the function.
ℹ️ NOTICE
Before using this function for the first time, please set the local time in parameter [54], [55], then the user can set the corresponding time slot according to the local peak and valley tariff charges.
Peak-Valley Electricity Tariff
Diagram Description: Bar chart showing Peak-Valley Electricity Tariff over a 24-hour period, with 'On-peak', 'Mid-peak', and 'Valley' zones.
Time-slot Utility Charging/Carrying Function
Diagram Description: Clock-like diagrams illustrating three definable periods for time-slot utility charging/carrying.
Time-slot Battery Discharging Function
Diagram Description: Clock-like diagrams illustrating three definable periods for time-slot battery discharging.
5.4 Battery Parameter
Lead-acid Battery
| Parameter/Battery type | Sealed | Gel | Flooded | User-defined |
| SLd | GEL | FLd | USE | |
| Over-voltage cut-off voltage | 60V | 60V | 60V | 60V |
| Equalization charging voltage | 58V | 56.8V | 58V | 40~60V settable |
| Bulk charging voltage | 57.6V | 56.8V | 57.6V | 40~60V settable |
| Float charging voltage | 55.2V | 55.2V | 55.2V | 40~60V settable |
| Under-voltage alarm voltage | 44V | 44V | 44V | 40~60V settable |
| Under-voltage cut-off voltage | 42V | 42V | 42V | 40~60V settable |
| Discharging limit voltage | 40V | 40V | 40V | 40~60V settable |
| Over-discharge delay time | 5s | 5s | 5s | 1~30s settable |
| Equalization charging duration | 120m | 120min | 120min | 0~900min settable |
| Equalization charging interval | 30d | - | 30d | 0~250d settable |
| Bulk charging interval | 120m | 120m | 120m | 10~900m settable |
ℹ️ NOTICE
Diagram Description: Graph illustrating battery charging stages: Bulk, Absorption, Float, and Equalization, showing voltage and current over time.
Li-ion Battery
| Parameter/Battery type | Ternary | LFP | User-defined | |||
| N13 | N14 | L16 | L15 | L14 | USE | |
| Over-voltage cut-off voltage | 60V | 60V | 60V | 60V | 60V | 60V |
| Equalization charging voltage | - | - | - | - | - | 40~60V settable |
| Bulk charging voltage | 53.2V | 57.6V | 56.8V | 53.2V | 49.2V | 40~60V settable |
| Float charging voltage | 53.2V | 57.6V | 56.8V | 53.2V | 49.2V | 40~60V settable |
| Under-voltage alarm voltage | 43.6V | 46.8V | 49.6V | 46.4V | 43.2V | 40~60V settable |
| Under-voltage cut-off voltage | 38.8V | 42V | 48.8V | 45.6V | 42V | 40~60V settable |
| Discharging limit voltage | 36.4V | 39.2V | 46.4V | 43.6V | 40.8V | 40~60V settable |
| Over-discharge delay time | 30s | 30s | 30s | 30s | 30s | 1~30s settable |
| Equalization charging duration | - | - | - | - | - | 0~900min settable |
| Equalization charging interval | - | - | - | - | - | 0~250d settable |
| Bulk charging interval | 120min settable | 120min settable | 120min settable | 120 m settable | 120 m settable | 10~900min settable |
ℹ️ NOTICE
If no BMS is connected, the inverter will charge according to battery voltage with a preset charging curve. When the inverter communicates with the BMS, it will follow the BMS instructions to perform a more complex stage charging process.
Diagram Description: Graph illustrating battery charging stages (Bulk, Absorption) for Li-ion batteries, showing voltage and current over time.
6. Communication
6.1 Overview
Diagram Description: Illustration of the inverter's rear panel highlighting communication ports: USB-B, WIFI, RS485/CAN, DRY CONTACT. A table maps port numbers to their types.
| 1 | USB-B port | 3 | RS485/CAN port |
| 2 | WIFI port | 4 | Dry contact port |
6.2 USB-B Port
Users can use the host computer software to read and modify the device parameters through this port. If you need the installation package of the host computer software, you can download it from the official website of SRNE or contact us to get the installation package.
Diagram Description: Diagram showing a USB-B port connection to a laptop for parameter configuration.
6.3 WIFI Port
The WIFI port is used to connect to the Wi-Fi/GPRS data acquisition module, which allows users to view the operating status and parameters of the inverter via mobile phone APP.
| RJ45 | Definition |
| Pin 1 | 5V |
| Pin 2 | GND |
| Pin 3 | / |
| Pin 4 | / |
| Pin 5 | / |
| Pin 6 | / |
| Pin 7 | RS485-A |
| Pin 8 | RS485-B |
Diagram Description: Diagram showing the WIFI port connection and its RJ45 pinout. An illustration depicts a mobile phone APP connecting wirelessly.
6.4 RS485/CAN Port
The RS485/CAN port is used to connect to the BMS of Li-ion battery.
ℹ️ NOTICE
If you need to use the inverter to communicate with the lithium battery BMS, please contact us for the communication protocol or upgrade the inverter to the appropriate software program.
| RJ45 | Definition |
| Pin 1 | RS485-B |
| Pin 2 | RS485-A |
| Pin 3 | / |
| Pin 4 | CANH |
| Pin 5 | CANL |
| Pin 6 | / |
| Pin 7 | RS485-A |
| Pin 8 | RS485-B |
Diagram Description: Diagram showing the RS485/CAN port and its RJ45 pinout, used for BMS communication.
6.5 Dry Contact Port
Dry contact port with 4 functions: 1. Remote switch on/off 2. Switching signal output 3. Battery temperature sampling 4. Generator remote start/stop
Diagram Description: Diagram of the dry contact port with 7 pins, detailing connections for remote switch, switching signal, temperature sampling, and generator remote start/stop.
| Function | Description |
| Remote switch | When pin 1 is connected with pin 2, the inverter will switch off the AC output. When pin1 is disconnected from pin2, the inverter outputs normally. |
| Switching signal output | When the voltage of battery reaches the battery discharge limiting voltage (parameter [15]), pin 3 to pin 1 voltage is 0V. When the battery charging is normal, pin 3 to pin 1 voltage is 5V. |
| Temperature sampling (reserved) | Pin 1 & Pin 4 can be used for battery temperature sampling compensation. |
| Generator remote switch | When the voltage of battery reaches the battery under-voltage alarm point (parameter [14]) or voltage point of battery switch to utility (parameter [04]), pin 6 to pin 5 normally open, pin 7 to pin 5 normally close. When the voltage of battery reaches the voltage point of utility switch to battery (parameter [05]) or battery is full, pin 6 to pin 5 normally close, pin 7 to pin 5 normally open. (Pin 5/6/7 outputs 125Vac/1A, 230Vac/1A, 30Vdc/1A) |
ℹ️ NOTICE
If you need to use the remote start/stop function of the generator with dry contact, ensure that the generator has ATS and supports remote start / stop.
7. Fault and Remedy
7.1 Fault Code
Diagram Description: Illustration of the inverter display showing 'Alarm' and 'Fault code' indicators.
| Fault Code | Meaning | Does it Affect the outputs | Descriptions |
| 01 | BatVoltLow | Yes | Battery under-voltage alarm |
| 02 | BatOverCurrSw | Yes | Battery discharge over-current, software protection |
| 03 | BatOpen | Yes | Battery disconnected alarm |
| 04 | BatLowEod | Yes | Battery under-voltage stop discharging alarm |
| 05 | BatOverCurrHw | Yes | Battery over-current, hardware protection |
| 06 | BatOverVolt | Yes | Battery over-voltage protection |
| 07 | BusOverVoltHw | Yes | Busbar over-voltage, hardware protection |
| 08 | BusOverVoltSw | Yes | Busbar over-voltage, software protection |
| 09 | PvVoltHigh | Yes | PV input over-voltage protection |
| 10 | PvBoostOCSw | No | Boost circuit over-current, software protection |
| 11 | PvBoostOCHw | No | Boost circuit over-current, hardware protection |
| 12 | SpiCommErr | Yes | Master-slave chip SPI communication failure |
| 13 | OverloadBypass | Yes | Bypass overload protection |
| 14 | OverloadInverter | Yes | Inverter overload protection |
| 15 | AcOverCurrHw | Yes | Inverter over-current, hardware protection |
| 16 | AuxDSpReqOffPWM | Yes | Slave chip request switch off failure |
| 17 | InvShort | Yes | Inverter short-circuit protection |
| 18 | Bussoftfailed | Yes | Busbar soft start failed |
| 19 | OverTemperMppt | No | PV heat sink over-temperature protection |
| 20 | OverTemperInv | Yes | Inverter heat sink over-temperature protection |
| 21 | FanFail | Yes | Fan failure |
| 22 | EEPROM | Yes | Memory failure |
| 23 | ModelNumErr | Yes | Wrong model |
| 24 | Busdiff | Yes | Positive and negative busbar voltage imbalance |
| 25 | BusShort | Yes | Busbar short circuit |
| 26 | Rlyshort | Yes | Inverter output back flow to bypass |
| 27 | LinePhaseLack | Yes | Grid phase lack |
| 28 | LinePhaseErr | Yes | Utility input phase fault |
| 29 | BusVoltLow | Yes | Busbar under-voltage protection |
| 30 | BatCapacityLow1 | Yes | Battery SOC below 10% alarm (Effective after successful BMS communication) |
| 31 | BatCapacityLow2 | No | Battery SOC below 5% alarm (Effective after successful BMS communication) |
| 32 | BatCapacityLowStop | Yes | Battery low capacity shutdown (Effective after successful BMS communication) |
| 36 | Balance currentOC | Yes | Balance bridge arm overcurrent failure |
| 56 | Low insulation resistance fault | No | PV abnormally low impedance to ground. |
| 57 | Leakage current overload fault | Yes | System leakage current exceeds limit. |
| 58 | BMSComErr | No | BMS communication failure |
| 60 | BMSUnderTem | No | BMS under-temperature alarm (Effective after successful BMS communication) |
| 61 | BMSOverTem | No | BMS over-temperature alarm (Effective after successful BMS communication) |
| 62 | BMSOverCur | No | BMS over-current alarm (Effective after successful BMS communication) |
| 63 | BMSUnderVolt | No | BMS under-voltage alarm (Effective after successful BMS communication) |
| 64 | BMSOverVolt | No | BMS over-voltage alarm (Effective after successful BMS communication) |
7.2 Troubleshooting
| Fault Code | Meaning | Causes | Remedy |
| / | No screen display | No power input, or the switch on the bottom of the unit is not switched on. | Check whether the battery air circuit-breaker or PV air circuit-breaker is turned on. Check if the switch is "ON". Press any button on the screen to exit the screen sleep mode. |
| 01 | Battery under-voltage | The battery voltage is lower than the value set in parameter [14]. | Charge the battery and wait until the battery voltage is higher than the value set in parameter [14]. |
| 03 | Battery not connected | The battery is not connected, or the BMS is in discharge protection state. | Check that the battery is reliably connected. Check that the battery circuit-breaker is off. Ensure that the BMS is able to communicate properly. |
| 04 | Battery over-discharge | The battery voltage is lower than the value set in parameter [12]. | Manual reset: Switch off and restart. Automatic reset: Charge the battery so that the battery voltage is higher than the value set in parameter item [35]. |
| 06 | Battery over-voltage when charging | Battery is in over-voltage condition. | Manually power off and restart. Check to see if the battery voltage exceeds the limit. If it exceeds, the battery needs to be discharged until the voltage is below the battery over-voltage recovery point. |
| 13 | Bypass over-load (software detection) | Bypass output power or output current over-load for a period of time. | Reduce the load power and restart the device. Please refer to item 11 of the protection function for more details. |
| 14 | Inverter over-load(software detection) | Inverter output power or output current over-load for a period of time. | |
| 19 | Heat sink of PV input over-temperature (software detection) | Heat sink of PV input temperature exceeds 90°C for 3s. | Normal charging and discharging is resumed when the temperature of the heat sink cools below the over-temperature recovery temperature. |
| 20 | Heat sink of inverter output over-temperature (software detection) | Heat sink of inverter output temperature exceeds 90°C for 3s. | |
| 21 | Fan failure | Hardware detects fan failure. | Manually toggle the fan after powering off the machine to check for foreign matter blockage. |
| 26 | AC input relay short-circuit | Relay for AC input sticking. | Manually turn off and restart the machine; if the fault reappears after restarting, you need to contact the after-sales service to repair the machine. |
| 28 | Utility input phase fault | AC input phase does not match AC output phase. | Make sure that the phase of the AC input is the same as the phase of the AC output. |
ℹ️ NOTICE
If you encounter product faults that cannot be solved by the methods in the above table, please contact our after-sales service department for technical support and do not disassemble the equipment by yourself.
8. Protection and Maintenance
8.1 Protection Function
| No | Protection Functions | Description |
| 1 | PV input current / power limiting protection | When the charging current or power of the PV array configured exceeds the PV input rated value, the inverter will limit the input power and charge at the rated. |
| 2 | PV input over-voltage protection | If the PV voltage exceeds the maximum value allowed by the hardware, the machine reports a fault and stops PV boosting to output a sinusoidal AC waveform. |
| 3 | Anti-reverse charge protection at night | At night, the battery will be prevented from discharging to the PV module because the battery voltage is greater than the PV module voltage. |
| 4 | AC input over-voltage protection | When the mains voltage of per phase exceeds 280Vac, the mains charging will be stopped and will switch to inverter output. |
| 5 | AC input under-voltage protection | When the mains voltage of per phase falls below 170Vac, the mains charging will be stopped and will switch to inverter output. |
| 6 | Battery over-voltage protection | When the battery voltage reaches the over-voltage disconnection voltage point, it will automatically stop the PV and mains charging of the battery to prevent over-charging and damage to the battery. |
| 7 | Battery under-voltage protection | When the battery voltage reaches the low-voltage disconnection voltage point, it will automatically stop discharging the battery to prevent the battery from being over-discharged and damaged. |
| 8 | Battery over-current protection | When the battery current exceeds the range allowed by hardware, the machine will turn off output and stop discharging the battery. |
| 9 | AC output short-circuit protection | When a short-circuit fault occurs at the load, the AC output voltage will be switched off immediately and output again after 1 min. If the output load is still short-circuited after 3 attempts, short-circuit fault of the load must be eliminated first and then manually re-powered in order to restore the normal output. |
| 10 | Heat sink over-temperature protection | When the internal temperature of the inverter is too high, the inverter will stop charging and discharging; when the temperature returns to normal, the inverter will resume charging and discharging. |
| 11 | Inverter over-load protection | After triggering the overload protection, the inverter will resume output after 3 minutes; 5 consecutive overloads will switch off the output until the inverter restarts. (102%<load<110%) ±10%: error, output switched off after 5 minutes. (110%<load<125%) ±10%: error reported and output switched off after 10s. (>125% load ±10%): error reported and output switched off after 5s. |
| 12 | AC output reverse | Prevents backfeeding of battery inverter AC to bypass AC inputs. |
| 13 | Bypass over-current protection | Built-in AC input overcurrent protection circuit breaker. |
| 14 | Bypass phase inconsistency protection | When the phase of the two bypass inputs is different from the phase of the inverter phase split, the machine will prohibit cutting into the bypass to prevent the load from dropping out or short-circuiting when cutting into the bypass. |
8.2 Maintenance
To maintain optimum long-lasting working performance, it is recommended that the following items be checked twice a year:
- Ensure that the airflow around the inverter is not blocked and remove any dirt or debris from the radiator.
- Check that all exposed conductors are not damaged by sunlight, friction with other surrounding objects, dry rot, insect or rodent damage, etc. The conductors need to be repaired or replaced if necessary.
- Verify that the indications and displays are consistent with the operation of the equipment; note any faults or incorrect displays and take corrective action if necessary.
- Check all terminals for signs of corrosion, insulation damage, high temperatures or burning/discolouration and tighten terminal screws.
- Check for dirt, nesting insects and corrosion; clean as required; clean insect screens regularly.
- If the lightning arrester has failed, replace the failed arrester in time to prevent lightning damage to the inverter or other equipment of the user.
⚠️ DANGER
- Make sure that the inverter is disconnected from all power sources and that the capacitors are fully discharged before carrying out any checks or operations to avoid the risk of electric shock.
The Company shall not be liable for damage caused by:
- Damage caused by improper use or use in a wrong location.
- PV modules with an open-circuit voltage exceeding the maximum permissible voltage.
- Damage caused by the operating temperature exceeding the restricted operating temperature range.
- Dismantling and repair of the inverter by unauthorized persons.
- Damage caused by force majeure: damage during transport or handling of the inverter.
9. Datasheet
| MODEL | ASF4880SH3 | ASF48100SH3 | ASF48120SH3 | Can Be Set |
| INVERTER OUTPUT | ||||
| Rated Output Power | 8,000W | 10,000W | 12000W | |
| Max. Peak Power | 16,000W | 20,000W | 24000W | |
| Rated Output Voltage | 230/400Vac (three-phase) | |||
| Capacity of Motor Load | 5HP | 6HP | 6HP | |
| Rated Frequency | 50/60Hz | |||
| Output Waveform | pure sine wave | |||
| Switching Time | 10ms (typical) | |||
| Number of parallel | / | |||
| Overload Protection | After triggering the overload protection, the inverter will resume output after 3 minutes; 5 consecutive overloads will shut down the output until the inverter is restarted. (102%<load<110%) : alarm, output shut down after 5 minutes. (110%<load<125%) : alarm, output shut down after 10s. (>125% load): alarm, output shut down after 5s. | |||
| BATTERY | ||||
| Battery Types | Li-ion / Lead-Acid / User Defined | ✔️ | ||
| Rated Battery Voltage | 48Vdc | |||
| Voltage Range | 40-60Vdc | ✔️ | ||
| Max. Utility / Generator Charging Current | 100A | 120A | 120A | ✔️ |
| Max. Hybrid Charging Current | 180A | 220A | 260A | ✔️ |
| PV INPUT | ||||
| No. of MPPT | 2 | |||
| Max. Input Power | 6000W/6000W | 7500W/7500W | 9000W/9000W | |
| Max. Input Current | 22/22A | |||
| Max. Open-circuit Voltage | 800Vdc/800Vdc | |||
| MPPT Operating Voltage Range | 200-650Vdc/200-650Vdc | |||
| Utility / GENERATOR INPUT | ||||
| Input Voltage Range | phase voltage 170~280V, line voltage 305~485V | |||
| Input Frequency Range | 50 / 60Hz | |||
| Bypass Overload phase Current | 23.2A | 29A | 35A | |
| EFFICIENCY | ||||
| MPPT Tracking Efficiency | 99.9% | |||
| Max. Battery Inverter Efficiency | ≥92% | |||
| European Efficiency | 97.2% | 97.5% | 97.5% | |
| GENERAL | ||||
| Dimensions | 620*445*130mm (2.03*1.46*0.43ft) | |||
| Weight | 27kg (59.52lb) | |||
| Protection Degree | IP20, indoor only | |||
| Ambient Temp | -10~55℃, >45°C derated | |||
| Noise | <60dB | |||
| Self-consumption | <130w | |||
| Cooling Method | air cooling | |||
| Warranty | 2 years | |||
| COMMUNICATION | ||||
| Internal Interface | RS485 / CAN / USB / Dry contact | ✔️ | ||
| External Module (optional) | Wi-Fi / GPRS | ✔️ | ||
| CERTIFICATION | ||||
| Safety | IEC62109-1, IEC62109-2,UL1741 | |||
| EMC | EN61000-6-1, EN61000-6-3, FCC 15 class B | |||
| RoHS | Yes | |||
