Important Safety Instructions
Please save these instructions for future use!
This manual contains all safety, installation and operating instructions for the POW-LVM5K Series all-in-one solar charge inverter.
Please read all instructions and precautions in the manual carefully before installation and use.
- Non-safety voltage exists inside the all-in-one solar charge inverter. To avoid personal injury, users shall not disassemble the all-in-one solar charge inverter themselves. Contact our professional maintenance personnel if there is a need for repair.
- Do not place the all-in-one solar charge inverter within the reach of children.
- Do not install the all-in-one solar charge inverter in harsh environments such as moist, oily, flammable or explosive, or heavily dusty areas.
- The mains input and AC output are high voltage, so please do not touch the wiring terminals.
- The housing of the all-in-one solar charge inverter is hot when it is working. Do not touch it.
- Do not open the terminal protective cover when the all-in-one solar charge inverter is working.
- It is recommended to attach proper fuse or circuit breaker to the outside of the all-in-one solar charge inverter.
- Always disconnect the fuse or circuit breaker near the terminals of PV array, mains and battery before installing and adjusting the wiring of the all-in-one solar charge inverter.
- After installation, check that all wire connections are tight to avoid heat accumulation due to poor connection, which is dangerous.
- The all-in-one solar charge inverter is off-grid. It is necessary to confirm that it is the only input device for load, and it is forbidden to use it in parallel with other input AC power to avoid damage.
Introduction
The PowMr POW-SunSmart SP5K series is a new type of mixed solar energy storage inverting & control all-in-one inverter. It integrates solar energy storage, municipal power charge storage, and AC sine wave output. Utilizing DSP control and advanced control algorithms, it achieves high response speed, reliability, and industrial standards.
It features four charge modes: only solar power, mains power priority, solar power priority, and mixed charge. Additionally, there are two optional output modes: inverting and mains power, to meet diverse application needs.
The solar charge module incorporates optimized MPPT tracking technology for quickly tracking the maximum power point of the photovoltaic array, ensuring maximum energy harvest from solar panels across a wide voltage range.
The AC-DC charge module uses an advanced control algorithm for full digital double closed-loop control of voltage and current, providing high control accuracy and compact size. It ensures stable and reliable battery charging with a wide AC voltage input range and comprehensive input/output protection.
The DC-AC inverter module, based on intelligent digital design, employs advanced SPWM technology to output a pure sine wave, converting DC to AC. It is suitable for various AC loads including household appliances, electric tools, industrial devices, and electronic audiovisual equipment. The product features a segment LCD display for real-time operation data and system status, along with comprehensive electronic protection for overall system safety and stability.
Video: PowMr POW-SunSmart SP5K Hybrid Solar Inverter Overview.
Key Features
- Off-grid & on-grid pure sine wave inverter.
- Maximum number of parallel connections is 6 units.
- Higher output power up to 5200W.
- 110Vac±5% output.
- Supports single-phase/split-phase/three-phase devices.
- Fast switching time of 10ms.
- Compatible with 48V lithium-ion and lead-acid battery, supports user-defined settings.
- Max. PV charging current up to 100A.
- Max. AC charging current up to 40A.
- Max. hybrid charging current up to 100A.
- 90~140Vac AC input voltage range.
- 120~500Vdc wide voltage range for PV access.
- Higher input DC current up to 22A in a single circuit.
- Energy saving mode function to reduce no-load energy losses.
- Configurable multiple communication interfaces (RS485/USB/Dry contact).
- Durable finish with high anti-corrosion.
- Effective forced air cooling to ensure stable equipment operation.
System Overview
The figure below illustrates a typical application scenario for this product. A complete system comprises the following components:
- Photovoltaic module: Converts light energy into direct current (DC) to charge the battery via the all-in-one inverter, or directly inverts light energy into alternating current (AC) to power the load.
- Mains or generator: Connected at the AC input, it can supply power to the load and charge the battery simultaneously. If no mains power or generator is connected, the system can still operate normally, with load power supplied by the battery and photovoltaic modules.
- Battery: Ensures normal power consumption for the system load when solar energy or mains supply is insufficient.
- Household load: Can be connected to various household and office AC loads, such as refrigerators, lamps, televisions, fans, and air conditioners.
- Inverting and control all-in-one inverter: The central energy conversion device of the entire system. The specific system wiring mode depends on the actual application scenario.
Figure: Basic System Connection Diagram. Max PV input current 22A, Max PV input power 5500W, Max PV open circuit voltage 500Vdc. Max AC charging current 0-40A. Charge voltage range 40-58Vdc. AC input voltage range 0-140Vac. AC output power 5000W. Single phase/split phase/three phase output (120/208/240V AC output). Supports 48V Lead acid or lithium battery.
Product Component Identification
Figure: Inverter Component Overview.
| No. | Description | No. | Description |
|---|---|---|---|
| ① | Overload protector | ⑨ | Dry contact port |
| ② | ON/OFF rocker switch | ⑩ | Cooling fan |
| ③ | AC input port | ⑪ | Battery port |
| ④ | AC output port | ⑫ | Cooling fan |
| ⑤ | Grounding screw hold | ⑬ | PV port |
| ⑥ | RS485-2 communication port | ⑭ | Touch the key lightly |
| ⑦ | USB communication port | ⑮ | Indicator light |
| ⑧ | RS485-1 communication port | ⑯ | LCD screen |
Dimensions
Figure: Inverter Dimension Drawing (446.9mm*350mm*133mm).
Setup and Installation
Installation Notice
- Take care while installing the battery. When installing the lead-acid liquid battery, it is required to wear goggles. Any body part contacting the battery acid must be washed with clear water in time.
- Do not place any metal object beside the battery to prevent short circuit of the battery.
- Acid gas may be generated during battery charge. Therefore, it is required to ensure good ventilation around the environment.
- During cabinet installation, sufficient space shall be reserved around the all-in-one inverter for heat dissipation; do not install the all-in-one inverter and lead-acid liquid battery in the same cabinet to avoid the corrosion of the all-in-one inverter by acid gas generated during battery operation.
- Only the battery with type consistent with the all-in-one inverter can be charged.
- Loose connection points and corroded wires may cause great heat, thereby melting the insulation layer of wires, burning the surrounding materials, or even causing fire. Therefore, all connectors must be tightened, and the wires must be fixed with ties, so as to avoid the looseness of connectors caused by wire shaking during mobile application.
- Tie conductors are selected based on no greater than 5A/mm² current density.
- The machine installed outdoors shall be protected against direct sunlight and rain.
- After the power switch is turned off, there is still high voltage inside the all-in-one inverter. Please do not open or touch the internal components, and carry out relevant operation after the capacitor is fully discharged.
- Please do not install the all-in-one inverter in a humid, greasy, flammable, explosive or dusty or other severe environments.
- The polarity of the battery input end of this product shall not be reversed, otherwise the device may be damaged easily or there may be some unpredictable dangers.
- AC supply input and AC output are both high voltage, so please do not touch the wires.
- Do not touch the fan in working to prevent injury.
- It is required to confirm that the all-in-one inverter is the unique power supply input device for the load device. It is forbidden to use the machine in parallel with other input AC power to avoid damage.
Mount Location
Confirm the installation position and heat dissipation space. Ensure sufficient air flow through the cooling fins of the inverter. At least 200mm space should be reserved at the left and right air outlets for natural convection heat loss.
Figure: Recommended Mounting Clearances (500mm top/bottom, 200mm left/right).
WARNING: Danger of explosion! Never install the all-in-one inverter and lead-acid liquid battery into the same sealed space or in a sealed place with probable accumulation of battery gas.
Mounting the Inverter
Install the unit by screwing two screws. It's recommended to use M6 screws.
Preparation for Wiring
Before connecting all wirings, please take off the bottom cover by removing two screws as shown below.
Figure: Removing Bottom Cover for Wiring.
Wiring Specification and Breaker Type
For wiring and installation, national and local electrical specification requirements must be observed.
PV Input Wire Diameter and Switch
The minimum wire diameter for the photovoltaic array is calculated based on its short circuit current. The array's short circuit current cannot exceed the maximum input current of the PV.
| Model | Wire Diameter | Max. PV input current | Circuit breaker Spec |
|---|---|---|---|
| POW-LVM5K-48V-N | 6mm²/10AWG | 22A | 2P-25A |
Note: The voltage in series shall not exceed maximum PV input open-circuit voltage.
Recommended AC Input Wire Diameter and Switch
| Model | Wire Diameter | Max. bypass input current | Circuit breaker Spec |
|---|---|---|---|
| POW-LVM5K-48V-N | 10mm²/7AWG | 63A | 2P-63A |
Note: There is already a corresponding breaker at the input connection point of mains supply. Therefore, it is not necessary to add one more.
Recommended Battery Wire Diameter and Switch Type
| Model | Wire Diameter | Rated Battery Discharge Current | Max. Charge Current | Circuit Breaker Spec |
|---|---|---|---|---|
| POW-LVM5K-48V-N | 33mm²/2AWG | 125A | 80A | 2P-200A |
Recommended AC Output Wire Specification and Breaker Type
| Model | Wire diameter | Rated Inverter AC Output current | Max. bypass output current | Circuit Breaker Spec |
|---|---|---|---|---|
| POW-LVM5K-48V-N | 10mm²/7AWG | 42A | 63A | 2P-63A |
Note: The wire diameter is only for reference. In case of long distance between photovoltaic array and all-in-one inverter or between all-in-one inverter and battery, use thicker wire to reduce voltage drop and improve system performance.
NOTICE: Above wire diameter and breaker are only for reference. Please select appropriate wire diameter and breaker based on practical condition.
AC Input/Output Wiring
- Before AC input/output wiring, disconnect the external breaker first and then confirm whether the cable used is thick enough. Refer to the 'Wiring Specification and Breaker Type' section.
- Correctly connect AC input wire in accordance with cable sequence and terminal position shown in the figure below. Connect ground lead first, then live wire and null wire.
Figure: AC Input Wiring.
- Correctly connect AC output wire in accordance with cable sequence and terminal position shown in the figure below. Connect the ground wire first, then live wire and null wire. The ground wire is connected to the ground screw hold through a shaped terminal.
Figure: AC Output Wiring.
NOTICE:
- Use thick ground cable as far as possible (with cable section not less than 4mm²), place the ground point to be close to the all-in-one inverter as far as possible and choose shorter ground wire to the greatest extent.
PV Input Wiring
- Before wiring, disconnect the external breaker first, and confirm whether the used cable is thick enough. Refer to the 'Wiring Specification and Breaker Type' section.
- Correctly connect PV input wire in accordance with cable sequence and terminal position shown in the figure below.
Figure: PV Input Wiring (PV+: positive input pole, PV-: negative input pole).
Battery Wiring
- Before wiring, disconnect the external breaker first, and confirm whether the used cable is thick enough. Refer to the 'Wiring Specification and Breaker Type' section. BAT wire shall be connected with the machine via O-shaped terminal. It is recommended to use an O-shaped terminal with 6mm inside diameter. The O-shaped terminal must compress the BAT wire firmly to prevent excessive heating caused by great contact resistance.
- Correctly connect BAT wire in accordance with cable sequence and terminal position shown in the figure below.
Figure: Battery Wiring (BAT+: positive battery pole, BAT-: negative battery pole).
WARNING:
- Input from mains supply, AC output and photovoltaic array may generate high voltage. Before wiring, make sure to break the breaker or fuse.
- During wiring process, make sure to pay attention to safety. Do not close the breaker or fuse. Ensure that '+' and '-' poles of different parts are correctly connected with wires. A breaker must be installed at the battery end and selected based on the 'Wiring Specification and Breaker Type' section. Before wiring, make sure to break the breaker to prevent strong electric spark generated during wiring. Avoid battery short circuit during the wiring process. If the all-in-one inverter is in an area with frequent thunder, it is suggested to install an external arrester at the PV input terminal.
Final Assembly
- After wiring, inspect whether the wires are correctly and firmly connected, especially checking the positive and negative input poles of the battery and PV, and ensuring AC input is not inaccurately connected to the AC output terminal.
- After ensuring reliable wiring and correct wire sequence, install the terminal protection cover in place.
Figure: Inverter with Terminal Protection Cover.
Start Up the Inverter
- First, close the breaker at the battery end, then press the rocker switch at the lower left side of the machine to “ON” state. The “AC/INV” indicator light will flash, indicating normal inverter operation.
- Afterwards, close the breakers of the photovoltaic array and mains supply.
- Finally, after AC output is normal, turn on AC loads one by one to avoid protection action generated by a large instant impact from simultaneous load turn-on. The all-in-one inverter operates normally according to the set mode.
NOTICE:
- If power is supplied to different AC loads, it is suggested to turn on loads with high impact current first, and then turn on loads with little impact current after the high impact loads operate stably.
- In case of abnormal operation of the all-in-one machine or abnormal display of the LCD or indicator light, refer to the 'Troubleshooting' section to handle exceptions.
Operating Modes
Charge Mode
- Photovoltaic priority: Mains charge is initiated only when photovoltaics are not operating. This mode maximizes solar energy utilization during the day and uses mains supply for charging to maintain battery levels. Suitable for areas with stable power grids and high electricity prices.
Figure: Photovoltaic Priority Charge Mode.
- Mains supply priority: Mains supply preferentially charges the battery. Photovoltaic charging is only initiated when the mains supply is unavailable.
Figure: Mains Supply Priority Charge Mode.
- Mixed charge: Utilizes both photovoltaics and mains supply. MPPT photovoltaic charge is preferred. If photovoltaic energy is insufficient, mains supply supplements charging. If photovoltaic energy is sufficient, mains supply charging stops. This mode allows for the fastest charging, suitable for areas with unstable power grids to ensure sufficient backup power.
Figure: Mixed Charge Mode.
- Only solar: Only photovoltaic charge is used, with no mains supply. This mode maximizes energy saving, as all battery energy comes from solar. Suitable for areas with good light conditions.
Figure: Only Solar Charge Mode.
Output Mode
- Photovoltaic priority mode: Photovoltaic and battery supply power to the load. When this mode is selected, green solar energy is utilized as much as possible for energy conservation and emission reduction. It switches to mains supply when photovoltaics are unavailable. This mode maximizes solar energy use while maintaining battery charge. Suitable for areas with stable power grids.
- Mains supply priority mode: The inverter only switches to inverter for power supply when mains supply is unavailable, functioning as a backup UPS. Applicable to areas with unstable power grids.
- Inverter priority mode: The inverter only switches to mains supply in case of battery undervoltage. This mode maximizes DC electric energy utilization. Applied in areas with stable power grids.
- Mixed functions mode: When the battery is not available or fully charged, the load is powered by PV and commercial power, with maximum PV output power.
Operation and Display Panel
Figure: LCD HD Display Screen.
Touchable Keys
| Function Key | Description |
|---|---|
| SET | Enter/exit setting menu |
| UP | Last option |
| DOWN | Next option |
| ENT | Confirm/enter option under setting menu |
LED Indicators
| Indicator light | Color | Description |
|---|---|---|
| AC/INV | Yellow | Constant on: mains supply output Flashing: inverter output |
| CHARGE | Green | Flashing: battery in charge Constant on: charge completed |
| FAULT | Red | Constant on: fault state |
Introduction to LCD Screen
Figure: LCD Screen Icons and Functions.
| Icon | Function | Icon | Function |
|---|---|---|---|
| Indicating that AC input end has been connected to power grid | Indicating that inverter circuit is in working. | ||
| Indicates the AC input mode in APL mode (wide voltage range) | BYPASS | Indicating that the machine is in mains supply bypass work mode | |
| Indicating that PV input end has been connected to solar battery panel | OVER LOAD | Indicating that AC output is in overload state | |
| Indicating that machine has been connected to battery. | Indicating percentage of AC output load. | ||
| indicating 0%~24% battery remaining capacity; | indicating 0%~24% load percentage; | ||
| indicating 25%~49% battery remaining capacity; | indicating 25%~49% load percentage; | ||
| indicating 50%~74% battery remaining capacity; | indicating 50%~74% load percentage; | ||
| indicating 75%~100% battery remaining capacity. | indicating ≥75% load percentage. | ||
| LI | Indicating that present battery type of the machine is lithium battery | Indicating that buzzer is not enabled | |
| SLA | Indicating that current battery type of machine is lead-acid battery | Indicating alarm of machine | |
| CHARGING | Indicating that the battery is in charge state. | ERROR | Indicating that the machine is in fault state. |
| Indicating that AC/PV charge circuit is in working | Indicating that the machine is in setting mode. | ||
| Indicating that AC output end has AC voltage output | 88 | The parameters displayed in the middle of the screen: 1. In the non-setup mode, the alarm or fault code is displayed. 2. In the setup mode, the currently set parameter item code is displayed. |
Parameter Display at Left Side of Screen: Input Parameter
| Icon | Meaning |
|---|---|
| AC | Indicating AC input |
| PV | Indicating PV input |
| INV | Indicating inverter circuit |
| WP | The icon is not displayed |
| Displaying battery voltage, total charge current of battery, charge power of mains supply, AC input voltage, AC input frequency, PV input voltage, temperature of internal radiator, software version |
Parameter Display at Right Side of Screen: Output Parameter
| Icon | Meaning |
|---|---|
| Indicating output voltage, output current, output active power, output apparent power, battery discharge current, software version; In setting mode, displaying the setting parameter under the parameter item code set currently |
Arrow Display
| Icon | Meaning | Icon | Meaning |
|---|---|---|---|
| charging the battery terminal | The arrow is not displayed | ||
| Indicating power grid power supply to load | Indicates the battery terminal supplying power to the inverter circuit | ||
| Indicating power grid power supply to charge circuit | Indicating power supply from inverter circuit to load | ||
| Indicating PV power supply to charge circuit |
Real-time Data View Method
In the LCD main screen, press the “UP” and “DOWN” keys to navigate and view different real-time data of the machine.
| Page | Left Parameter of Screen | Middle Parameter of Screen | Right Parameter of Screen |
|---|---|---|---|
| 1 | Battery input voltage | Fault code | Output voltage |
| 2 | PV temperature | PV output KW | |
| 3 | PV input voltage | PV output current | |
| 4 | Input battery current | Output battery current | |
| 5 | Input battery KW | Output battery KW | |
| 6 | AC input frequency | AC output load frequency | |
| 7 | AC input voltage | AC output load current | |
| 8 | Input voltage | Output load KVA | |
| 9 | INV temperature | INV output load KW | |
| 10 | APP software version | Bootloader software version | |
| 11 | Model Battery Voltage Rating | Model Output Power Rating | |
| 12 | Model PV Voltage Rating | Model PV Current Rating |
Setting Parameters
To enter or exit the setting menu, press the “SET” key. After entering, parameter number [00] will flash. Use “UP” and “DOWN” to select the parameter item code. Press “ENT” to enter the editing state, where the parameter value will flash. Adjust values with “UP” and “DOWN”, then press “ENT” to confirm and return to parameter selection.
| No. | Description | Selectable option |
|---|---|---|
| 00 | Exit | [00] ESC: Exit from setting menu |
| 01 | Work priority mode | [01] SOL: At photovoltaic priority mode, when the photovoltaics is invalid or the battery values are lower than the parameter 【04】 setting value, it shall switch to AC power. [01] UTI default: At AC priority mode, it switches to inverter only when the AC power is invalid. [01] SBU: At inverter priority mode, it switches to AC power only when battery is undervoltage or lower than the setting value of parameter 【04】. |
| 02 | Output frequency | [02] 50.0 default: At bypass self-adaption, it automatically adapts to AC frequency in case of AC power; without AC power, the output frequency can be set via the menu. For 230V machine, it is 50Hz by default; for 120V machine, it is 60Hz by default. [02] 60.0 |
| 03 | AC input voltage range | [03] APL: 90~140V AC input range of 120V machine. [03] UPS default: 90~140V AC input range of 120V machine. |
| 04 | Battery to bypass | [04] 43.6V default: When parameter 【01】 =SOL/SBU, the battery voltage is lower than the set value, the output is switched to mains or generator from battery. The setting range is 40V~52V. |
| 05 | Bypass to battery | [05] 57.6V default: Cannot exceed the value of [14] settings. When parameter 【01】 =SOL/SBU, battery voltage is higher than the set value, the output is switched to battery from mains or generator at 48V~60V setting range. |
| 06 | Charge mode | [06] CSO: For photovoltaics priority charge, the AC charge is started only when photovoltaics is invalid. [06] CUB: For AC priority charge, the photovoltaics charge is started only when AC is invalid. [06] SNU default: In case of mixed charge from photovoltaics and AC power, priority is given to photovoltaic charge. In case of insufficient photovoltaic energy, the AC charge is used for supplement. In case of sufficient photovoltaic energy, mains supply stops charge. Note: photovoltaic charge and AC charge can be performed at the same time only when AC bypass is output under load. When inverter works, only photovoltaic charge can be started. [06] OSO: Only photovoltaic charge, no AC charge is started. |
| 07 | Maximum charge current | [07] 60A default: Setting range 0~80A; |
| 08 | Battery type | [08] USE: For user-defined, all battery parameters can be set. [08] SLd: Sealed lead-acid battery, constant voltage charge voltage 57.6V, float charge voltage 55.2V. |
| [08] FLd: For vented lead-acid battery, charge voltage at constant voltage is 58.4V and float charge voltage is 55.2V [08] GEL default: For gel lead-acid battery, charge voltage at constant voltage is 56.8V and float charge voltage is 55.2V. [08] L14/L15/L16: Lithium iron phosphate battery 14 strings/15 strings/16 strings; 16 string/15 string/14 string default constant. The voltage charging pressure is 56.8V, 53.2V, 49.6V, which are adjustable. [08] N13/N14: Ternary lithium battery; which is adjustable. | ||
| 09 | Boost charge voltage | [09] 56.8V default: The setting range of boost charge voltage is 48V~58.4V with 0.4V step. It is valid in case of a self-defined or a lithium battery. |
| 10 | Boost charge maximum time | [10] 120 default: Boost maximum charge time setting means setting of maximum charge time of voltage when the voltage reaches parameter 【09】 from 5min~900min at 5-minute step. It is valid in case of a self-defined or a lithium battery. |
| 11 | Float voltage | [11] 55.2V default: 48V~58.4V setting range of float voltage at 0.4V step is valid in case of a self-defined battery. |
| 12 | Over discharge voltage | [12] 42V default: So as to over discharge voltage, when the battery voltage is lower than the judgement point, after delaying for the parameter 【13】 setting time, turn off the inverter output. 40V~48V voltage setting range at 0.4V step is valid in case of a self-defined battery and lithium battery. |
| 13 | Over discharge delay time | [13] 5S default: So as to over discharge delay time, when the battery voltage is lower than parameter 【12】, the inverter output is turned off after delaying the time set with the parameter. 5S~50S setting range at 5S step is valid in case of a self-defined and lithium battery. |
| 14 | Battery undervoltage alarm point | [14] 44V default: So as to battery undervoltage alarm point, when the battery voltage is lower than the judgement point, an undervoltage alarm is given out and no turnoff is output. 40V~52V setting range at 0.4V step is valid in case of a self-defined and lithium battery. |
| 15 | Battery discharge limiting voltage | [15] 40V default: So as to battery discharge limiting voltage, when the battery voltage is lower than the judgement point, the output is turned off immediately. 40V~52V setting range at 0.4V step is valid in case of a self-defined and lithium battery. |
| 16 | Equalizing charge | [16] DIS: No equalizing charge is permitted. [16] ENA default: When equalizing charge is enabled, only vented lead-acid battery and sealed lead-acid are valid. |
| 17 | Equalizing charge voltage | [17] 58.4V default: So as to equalizing charge voltage, 48V~58.4V setting range at 0.4V step is valid in case of a vented lead-acid battery and sealed lead-acid battery. |
| 18 | Equalizing charge time | [18] 120 default: So as to equalizing charge time, 5mins ~ 900mins setting range at 5mins step is valid in case of a vented lead-acid battery and sealed lead-acid battery. |
| 19 | Equalizing charge delay | [19] 120 default: For equalizing charge delay, 5mins ~ 900mins setting range at 5mins step is valid in case of a vented lead-acid battery and sealed lead-acid battery. |
| 20 | Equalizing charge derating time | [20] 30 default: For equalizing charge derating time, 0~30days setting range at 1-day step is valid in case of a vented lead-acid battery and sealed lead-acid battery. |
| 21 | Equalizing charge enabling | [21] ENA: Start equalizing charge immediately. [21] DIS default: Stop equalizing charge immediately. |
| 22 | Energy saving mode | [22] DIS default: No energy-saving mode [22] ENA: After enabling the energy-saving mode, in case of empty or small load, the output is turned off after output delaying of inverter for a certain period of time. After the rocker switch is pressed to “OFF” state and then to "ON" state, the inverter restore the output. |
| 23 | Automatic restart after overload | [23] DIS: When the automatic restart after overload is disabled, if the output is turned off upon overload, the machine shall not restore turn on. [23] ENA default: When the automatic restart after overload is enabled, if the output is turned off upon overload, output is restarted by the mains after 3min delay. The machine shall not restarted after 5 times of restarts. |
| 24 | Automatic restart after overtemperature | [24] DIS: When automatic restart after overtemperature is disabled, if the output machine is turned off upon overtemperature, no output is turned on. [24] ENA default: When automatic restart after overtemperature is enabled, if the output is turned off upon overtemperature, the output can be turned on after the machine cools down. |
| 25 | Buzzer alarm | [25] DIS: Disabling alarm [25] ENA default: Enabling alarm |
| 26 | Mode conversion reminding | [26] DIS: No alarm prompt in case of any change in main input source [26] ENA default: Alarm prompt is enabled if state of main input source is changed. |
| 27 | Inverter overload to bypass | [27] DIS: No automatic switching to AC power in case of inverter overload [27] ENA default: Automatic switching to AC power in case of inverter overload |
| 28 | AC maximum Charge current | [28] 40A default: AC Out 120Vac Setting range 0~40A |
| 29 | Split Phase | [29] DIS default: Supply for industrial frequency transformer (disabled) [29] ENA: Supply for industrial frequency transformer (enabled) |
| 30 | RS485 address setting | [30] 1 default: RS485 communication address setting range 1 ~ 254, (refer to Number [32] is valid when set as SLA) |
| 32 | RS485-2 communication | [32] SLA default: RS485-2 port for PC or telecommunication control. [32] BMS: RS485-2 port for BMS communication. |
| 33 | Battery BMS communication protocol | When the parameter [32] setting item =BMS, you can choose to match the battery manufacturer's BMS protocol to communicate with BMS for the lithium battery protection. PAC=PACE, RDA=Ritar, AOG=ALLGRAND BATTERY, OLT=OLITER, HWD=SUNWODA, DAQ=DAKING, WOW=SRNE, PYL=PYLONTECH, UOL=WEILAN |
| 34 | Hybrid output function | [34] DIS default: Disable this function. [34] Lod: Hybrid output function, in UTI mode, the PV first only charges for battery, the left energy will power on the load, but not feed back to the grid. |
| 35 | Battery Low voltage recovery | [35] 52V default: Setting range 44V~58.4V |
| 37 | Battery fully charged recovery point | [37] 52V default: After the battery is fully charged, it needs to be lower than this set voltage before it can be recharged |
| 38 | AC output voltage setting | [38] 120Vac default: Settable: (100/105/110Vac) |
| 57 | Stop charging current | [57] 2A default: Charging stops when the default charging current is less than this setting |
| 58 | Discharge alarm SOC setting | [58] 15% default: SOC alarm when capacity is less than this set value (valid when BMS communication is normal) |
| 59 | Cut-off discharge SOC Settings | [59] 5% default: Stops discharging when the capacity is less than this setting (valid when BMS communication is normal) |
| 60 | Cut-off charge SOC Settings | [60] 100% default: Stops charging when capacity is greater than or equal to this setting (valid when BMS communication is normal) |
| 61 | Switch to mains SOC | [61] 10% default: Switch to mains when capacity is less than this setting (valid when BMS communication is normal) |
| 62 | Switch to inverter output SOC Settings | [62] 100% default: Switches to inverter output mode when capacity is greater than or equal to this setting (valid when BMS communication is normal) |
Battery Type Parameters
For Lead-acid Battery:
| Parameters | Battery type | |||
|---|---|---|---|---|
| Sealed lead acid battery (SLD) | Colloidal lead acid battery (GEL) | Vented lead acid battery (FLD) | User-defined (USE) | |
| Overvoltage disconnection voltage | 60V | 60V | 60V | 60V |
| Equalizing charge voltage | 58.4V | 56.8V | 59.2V | 40~60V (Adjustable) |
| Boost charge voltage | 57.6V | 56.8V | 58.4V | 40~60V (Adjustable) |
| Floating charge voltage | 55.2V | 55.2V | 55.2V | 40~60V (Adjustable) |
| Undervoltage alarm voltage | 44V | 44V | 44V | 40~60V (Adjustable) |
| Low voltage disconnection voltage | 42V | 42V | 42V | 40~60V (Adjustable) |
| Discharge limit voltage | 40V | 40V | 40V | 40~60V (Adjustable) |
| Over-discharge delay time | 5s | 5s | 5s | 1~30s (Adjustable) |
| Equalizing charge duration | 120 mins | - | 120 mins | 0~600 mins (Adjustable) |
| Equalizing charge interval | 30 days | - | 30 days | 0~250 days (Adjustable) |
| Boost charge duration | 120 mins | 120 mins | 120 mins | 10~600 mins (Adjustable) |
For Lithium Battery:
| Parameters | Battery Type | |||||
|---|---|---|---|---|---|---|
| Ternary lithium battery (N13) | Ternary lithium battery (N14) | Lithium iron phosphate battery (L16) | Lithium iron phosphate battery (L15) | Lithium iron phosphate battery (L14) | User-defined (USE) | |
| Overvoltage disconnection voltage | 60V | 60V | 60V | 60V | 60V | 60V |
| Equalizing charge voltage | - | - | - | - | - | 40~60V (Adjustable) |
| Boost charge voltage | 53.2V (Adjustable) | 57.6V (Adjustable) | 56.8V (Adjustable) | 53.2V (Adjustable) | 49.2V (Adjustable) | 40~60V (Adjustable) |
| Floating charge voltage | 53.2V (Adjustable) | 57.6V (Adjustable) | 56.8V (Adjustable) | 53.2V (Adjustable) | 49.2V (Adjustable) | 40~60V (Adjustable) |
| Undervoltage alarm voltage | 43.6V (Adjustable) | 46.8V (Adjustable) | 49.6V (Adjustable) | 46.4V (Adjustable) | 43.2V (Adjustable) | 40~60V (Adjustable) |
| Low voltage disconnection voltage | 38.8V (Adjustable) | 42V (Adjustable) | 48.8V (Adjustable) | 45.6V (Adjustable) | 42V (Adjustable) | 40~60V (Adjustable) |
| Discharge limit voltage | 36.4V | 39.2V | 46.4V | 43.6V | 40.8V | 40~60V (Adjustable) |
| Over-discharge delay time | 30s (Adjustable) | 30s (Adjustable) | 30s (Adjustable) | 30s (Adjustable) | 30s (Adjustable) | 1~30s (Adjustable) |
| Equalizing charge duration | - | - | - | - | - | 0~600mins (Adjustable) |
| Equalizing charge interval | - | - | - | - | - | 0~250days (Adjustable) |
| Boost charge duration | 120mins (Adjustable) | 120mins (Adjustable) | 120mins (Adjustable) | 120min (Adjustable) | 120mins (Adjustable) | 10~600 mins (Adjustable) |
Other Functions
Dry Node Function
This dry node can control the switch of a diesel generator to charge the battery.
- Under normal conditions, the NC-N point is closed and NO-N point is opened.
- When the battery voltage reaches the low-voltage disconnection voltage point, the relay coil is energized, and the NO-N point closes while the NC-N point opens. This allows the NO-N point to drive resistive loads (125VAC/1A, 230VAC/1A, and 30VDC/1A).
Figure: Dry Node Function Terminals.
RS485 Communication Function
There are two RS485 communication ports (RS485-1 and RS485-2) with two main functions:
- RS485-2 can be used for communication with a lithium battery BMS (customization may be required).
- RS485-1 connects to a dedicated RS485 to WiFi/GPRS communication module (developed by PowMr). With this module, the inverter can be controlled and monitored via a mobile app.
Figure: RS485 Communication Port Pinout (Pin 1: 5V power supply; Pin 2: GND; Pin 7: RS485-A; Pin 8: RS485-B).
USB Communication Function
This port is a USB communication port for connecting to the dedicated upper computer software (requires application). To use this port, the corresponding “USB to serial port chip CH340T driver” must be installed on the computer.
Figure: USB Communication Port.
Protection Functions
| No. | Protection Function | Note |
|---|---|---|
| 1 | Current limiting protection | When the charge current of the configured PV array exceeds the rated current of PV, it will be charged at the rated current. |
| 2 | Anti-reverse charge protection at night | At night, because the battery voltage is greater than that of the PV module, the battery shall be protected against discharge through the PV module. |
| 3 | AC input over-voltage protection | When the AC voltage exceeds 140V (120V model), the AC charge will be stopped and converted to inverter for output. |
| 4 | AC input under-voltage protection | When the AC voltage is lower than 90V (120V model), the AC charge will be stopped and converted to inverter for output. |
| 5 | Battery overvoltage protection | When the battery voltage reaches the overvoltage breaking voltage point, charge from PV and AC power to the battery shall be automatically stopped to prevent the battery from being damaged due to overcharge. |
| 6 | Battery low-voltage protection | When the battery voltage reaches the low-voltage breaking voltage point, the discharge to the battery will automatically stopped to prevent the battery from damage owing to over discharge. |
| 7 | Load output short circuit protection | In case of short-circuit fault at the load output end, the output of AC voltage can be turned off immediately and then restored 1 minute later. After trying for 3 times, the output load end is still in short circuit state, it is required to eliminate the short circuit fault of the load at first, and then turn on the machine again to restore normal output. |
| 8 | Radiator overtemperature protection | In case of excessive internal temperature, the all-in-one inverter shall stop charge and discharge; after the temperature returns to normal state, the all-in-one inverter shall restore charge and discharge. |
| 9 | Overload protection | There is output within 3 minutes after overload protection. The output is turned off in case of 5 times of continuous overload until the machine is turned on again. Specific overload grade and duration are shown in the technical parameter table after the manual. |
| 10 | AC reverse flowing protection | Prevent AC power inverted from battery inverting against reverse flowing into bypass AC input. |
| 11 | Bypass overcurrent protection | Built-in AC input overcurrent protection breaker. |
Troubleshooting
Meaning of Fault Codes
| Fault Code | Fault Name | Affecting output or not | Note |
|---|---|---|---|
| 【01】 | BatVoltLow | Yes | Battery undervoltage alarm |
| 【02】 | BatOverCurrSw | Yes | Average overcurrent software protection for battery discharge |
| 【03】 | BatOpen | Yes | No connection alarm of battery |
| 【04】 | BatLowEod | Yes | Stop discharge alarm for battery undervoltage |
| 【05】 | BatOverCurrHw | Yes | Battery overcurrent hardware protection |
| 【06】 | BatOverVolt | Yes | Charge overvoltage protection |
| 【07】 | BusOverVoltHw | Yes | Bus overvoltage hardware protection |
| 【08】 | BusOverVoltSw | Yes | Bus overvoltage software protection |
| 【09】 | PV VoltHigh | No | PV overvoltage protection |
| 【10】 | PV OCSw | No | PV overcurrent software protection |
| 【11】 | PV OCHw | No | PV overcurrent hardware protection |
| 【12】 | bLineLoss | No | AC power failure |
| 【13】 | OverloadBypass | Yes | Bypass overload protection |
| 【14】 | OverloadInverter | Yes | Inverter overload protection |
| 【15】 | AcOverCurrHw | Yes | Inverter overcurrent hardware protection |
| 【16】 | - | - | - |
| 【17】 | InvShort | Yes | Inverter short-circuit protection |
| 【18】 | - | - | - |
| 【19】 | OverTemperMppt | No | PV radiator overtemperature protection |
| 【20】 | OverTemperInv | Yes | Overtemperature protection of inverter radiator |
| 【21】 | FanFail | Yes | Fan fault |
| 【22】 | EEPROM | Yes | Memory fault |
| 【23】 | ModelNumErr | Yes | Inaccurate model setting |
| 【26】 | RlyShort | Yes | Inverted AC Output Backfills to Bypass AC |
| 【29】 | BusVoltLow | Yes | Bus undervoltage protection |
| 【32】 | BatCapacityLowStop | Yes | Inverter stops when battery capacity is low (setting BMS to enable validity) |
| 【34】 | CanCommFault | Yes | CAN communication fault in parallel operation |
| 【58】 | BMS communication error | No | Check whether the communication line is connected correctly and whether [33] is set to the corresponding lithium battery communication protocol |
| 【59】 | BMS alarm | No | Check the BMS fault type and troubleshoot battery problems |
| 【60】 | BMS battery low temperature alarm | No | BMS alarm battery low temperature |
| 【61】 | BMS battery over temperature alarm | No | BMS alarm battery over temperature |
| 【62】 | BMS battery over current alarm | No | BMS alarm battery over current. |
| 【63】 | BMS battery undervoltage alarm | No | BMS alarm low battery. |
| 【64】 | BMS battery over voltage alarm | No | BMS alarm battery over voltage |
Troubleshooting Steps
| Fault | Solving Measures |
|---|---|
| No display on screen | Check whether the battery air switch or PV air switch is closed; whether the switch is in "on" state; press any key on the screen to exit from the screen sleep mode. |
| Charge battery overvoltage protection | Measure whether the battery voltage exceeds 60V, and disconnect the photovoltaic array air switch and the AC air switch. |
| Battery undervoltage protection | After the battery charge restores to be above low-voltage disconnection recovery voltage. |
| Fan fault | Check if the fan doesn't work or if it's blocked by something else. |
| Radiator overtemperature protection | When the device cools below the overtemperature recovery temperature, it shall restore to normal charge and discharge control. |
| Bypass overload protection, inverting overload protection | ① Decrease consumer; ② Restart all-in-one inverter and the load output is restored. |
| Inverting short-circuit protection | ① Carefully check load connection condition, clear short-circuit fault point; ② After power on again, the load output is restored. |
| PV overvoltage | Check whether PV input voltage exceeds maximum allowable input voltage with a multimeter. |
| No connection alarm of battery | Check whether the battery is not disconnected or whether the breaker at the battery side is not closed. |
System Maintenance
To maintain optimum and permanent operation performance, it is suggested to check the following items semiannually:
- Confirm that the air flow around the all-in-one inverter will not be blocked. Remove any dirt or debris from the radiator.
- Check whether the insulation of all exposed wires is damaged due to sun exposure, friction with other objects around, dry rot, insect or rat damage, etc. If necessary, repair or replace the wires.
- Verify that the indication and display are consistent with the operation of the device. Pay attention to any fault or error display and take corrective measures if necessary.
- Check all terminals for corrosion, insulation damage, high temperature or burning/discoloration signs, and tighten the terminal screws.
- Check for dirt, nesting insects and corrosion phenomena and clean as required.
- If the arrester has failed, replace it in time to protect the all-in-one inverter and other user devices against lightning damage.
WARNING: Danger of electric shock! To perform above operations, make sure that all power supplies of the all-in-one inverter have been broken and all capacitor electricity has been discharged. Afterwards, corresponding inspection or operation can be performed!
PowMr is not responsible for any following damage:
- Damage caused by improper use or use in inappropriate place.
- Open-circuit voltage of photovoltaic module exceeds maximum allowable voltage.
- The damage caused by the operation ambient temperature beyond the limited operation temperature range.
- Personally taking apart and maintaining the all-in-one inverter.
- Damage caused by force majeure: Damage caused by transportation and handling of the all-in-one inverter.
Technical Specifications
| Model | POW-LVM5K-48V-N |
|---|---|
| AC Mode | |
| Rated input voltage | 110/120Vac |
| Input voltage range | (90Vac-140Vac) |
| Frequency | 50Hz/60Hz (auto-sensing) |
| Frequency range | 47±0.3Hz ~ 55±0.3Hz (50Hz); 57±0.3Hz ~ 65±0.3Hz (60Hz); |
| Overload/short-circuit protection | Breaker |
| Efficiency | >95% |
| Conversion time (Bypass and inverting) | 10ms (Typical value) |
| AC reverse flowing protection | yes |
| Maximum bypass overload current | 63A |
| Inverting Mode | |
| Output voltage waveform | Pure sine wave |
| Rated output power (VA) | 5000 |
| Rated output power (W) | 5000 |
| Power factor | 1 |
| Rated output voltage (Vac) | 120Vac |
| Output voltage error | ± 5% |
| Output frequency range (Hz) | 50Hz ± 0.3Hz; 60Hz ± 0.3Hz |
| Efficiency | >90% |
| Overload protection | (102%<load<110%) ±10%: reporting error and turn off the output after 5 minutes; (110%<load<125%) ±10%: reporting error and turn off the output after 10 seconds; Load>125% ±10%: reporting error and turn off the output after 5 seconds; |
| AC Charge | |
| Battery type | Lead acid or lithium battery |
| Maximum charge current | 40A |
| Charge current error | ± 5Adc |
| Charge voltage range | 40-60Vdc |
| Short-circuit protection | Breaker and blown fuse |
| Breaker specification | 63A |
| Overcharge protection | Turn off charge after 1min alarm |
| Solar Charge | |
| Maximum PV open-circuit voltage | 500Vdc |
| PV operation voltage range | 120-500Vdc |
| MPPT voltage range | 120-450Vdc |
| Battery voltage range | 40-60Vdc |
| Maximum input power | 5500W |
| Charge current range of solar energy (settable) | 0-80A |
| Charge short-circuit protection | Blown fuse |
| Wiring protection | Inverse wiring protection |
| Authentication Specification | |
| Specification authentication | CE(IEC62109)/CETL(UL 1741 C22.2 NO.107.1) /FCC/SAA |
| EMC authentication grade | EN61000 |
| Operating temperature range | -10°C ~ 55°C |
| Storage temperature range | -25°C ~ 60°C |
| Humidity range | 5% to 95% (three-proof paint protection) |
| Noise | ≤60dB |
| Thermal dissipation | Forced cooling with adjustable air speed |
| Communication interface | USB/RS485 (WiFi/GPRS)/dry node control |
| Dimension (L*W*D) | 446.9mm*350mm*133mm |
| Weight (kg) | 15KG |
User Tips
- Output Voltage Flexibility: The inverter supports both 110Vac and 240Vac output. When operating as a single unit, it can only output 110Vac. For 240Vac output and split-phase functionality, you must connect two or more units in parallel.
- Parallel Operation: This inverter can be paralleled with up to 6 units, allowing for a maximum combined AC output of 30KW. Remember that the phase split function is only available when units are paralleled.
- Grid Interaction: The inverter supports both off-grid and on-grid operation. While it can utilize grid power, the 'Hybrid output function' setting indicates that excess PV energy will power the load but *not* feed back to the grid. This means it's primarily designed for self-consumption and battery charging, not for selling excess power back to the utility.
- Battery Compatibility: The inverter is compatible with 48V lithium-ion and lead-acid batteries, and also supports user-defined battery parameters for fine-tuning.
Warranty and Support
The PowMr POW-SunSmart SP5K Hybrid Solar Inverter comes with a 2-year warranty.
For technical support or inquiries, please contact:
- Company: SHENZHEN HEHEJIN INDUSTRIAL CO.,LTD
- Tel/Fax: +86 755-28219903
- Email: support@powmr.com
- Website: www.powmr.com
- Address: Henggang Street, Longgang District, Shenzhen, Guangdong, China
A detailed user manual in PDF format is available for download from the manufacturer's website or via the provided link: PowMr POW-LVM5K-48V-N User Manual (PDF).
