ANENJI USER MANUAL

HYBRID SOLAR INVERTER/CHARGER

PRODUCT OVERVIEW

The ANENJI Hybrid Solar Inverter/Charger is a sophisticated device designed for efficient solar energy management. The front panel features:

  • 1. LCD display: Shows operational status and power information.
  • 2. Status indicator: Provides visual feedback on the unit's operational state.
  • 3. Charging indicator: Indicates battery charging status.
  • 4. Fault indicator: Alerts to any faults or warnings.
  • 5. Function buttons: Used for navigation and setting adjustments (ESC, UP, DOWN, ENTER).
  • 6. Battery input: Terminals for connecting the battery bank.
  • 7. RS485 communication port: For data communication.
  • 8. Grounding: Connection point for safety grounding.
  • 9. WiFi antenna port: For wireless connectivity.
  • 10. AC input: Terminal for AC power input.
  • 11. AC output: Terminal for AC power output.
  • 12. PV input: Terminals for connecting solar panels.
  • 13. Power on/off switch: To turn the unit on or off.
  • 14. Dry contact port: For external signaling.

Diagrams illustrate the unit's front, side, and rear views, detailing the location of these components.

INSTALLATION

Unpacking and Inspection

Upon receiving the unit, inspect the package for any damage. The package should contain: The unit (x1), User manual (x1), and WiFi antenna (x1).

Preparation

Before connecting any wiring, remove the bottom cover by unscrewing two screws.

Mounting the Unit

Consider the following points for installation:

  • Do not mount on flammable materials.
  • Mount on a solid surface.
  • Install at eye level for easy LCD display readability.
  • Maintain an ambient temperature between 0°C and 55°C for optimal operation.
  • The recommended installation position is vertical against a wall.
  • Ensure sufficient clearance (e.g., 20cm on sides, 50cm top/bottom) for heat dissipation and wire access, as shown in diagrams.

Note: The unit is suitable for mounting on concrete or other non-combustible surfaces only.

Battery Connection

CAUTION: For safety and compliance, install a separate DC over-current protector or disconnect device between the battery and inverter. Over-current protection is required.

WARNING: All wiring must be performed by qualified personnel. Use appropriate cables and terminals for safe and efficient operation.

Recommended battery cable and terminal size for 3KVA model:

ModelMaximum AmperageBattery capacityWire SizeCable mm²Terminal size L(mm)Terminal size W(mm)Terminal size D(mm)Torque value
3KVA137A200AH2AWG353715.36.44~6 Nm

Steps for battery connection:

  1. Prepare positive and negative battery cables based on recommended specifications.
  2. Connect all battery packs as required, using recommended battery capacity.
  3. Insert battery cables flatly into the inverter's battery connector. Tighten bolts to 4~6 Nm. Ensure correct polarity at both the battery and inverter, and that cables are securely screwed.

WARNING: Handle high battery voltage with care.

CAUTION: Do not place objects between inverter terminals to prevent overheating. Do not apply anti-oxidant substances before connecting terminals tightly. Ensure correct polarity (+ to +, - to -) before final DC connection.

AC Input/Output Connection

CAUTION: Install a separate AC breaker (recommended 50A) between the inverter and AC input power source for disconnection during maintenance and over-current protection.

CAUTION: Terminal blocks are marked "IN" and "OUT"; do not mis-connect them.

WARNING: All wiring must be performed by qualified personnel. Use appropriate cables for AC input connection.

Suggested cable requirement for AC wires (3KVA model):

ModelGaugeTorque Value
3KVA10AWG1.4~ 1.6Nm

Steps for AC input/output connection:

  1. Open the DC protector or disconnector before connecting AC input/output.
  2. Remove 10mm insulation sleeve from conductors. Shorten phase L and neutral N conductors by 3mm.
  3. Insert AC input wires according to polarity markings (Ground: yellow-green, L: brown/black, N: blue) and tighten screws. Connect the PE protective conductor first.
  4. Insert AC output wires similarly, connecting PE first.
  5. Ensure all wires are securely connected.

CAUTION: Connect AC wires with correct polarity. Reversed L and N wires can cause short circuits in parallel operation.

CAUTION: Appliances like air conditioners require a 2-3 minute restart delay. If power fluctuates, this can damage appliances. Check for time-delay functions on air conditioners before installation. The inverter/charger may trigger overload faults to protect appliances but could still cause internal damage.

PV Connection

CAUTION: Install a separate DC circuit breaker between the inverter and PV modules before connecting.

WARNING: All wiring must be performed by qualified personnel. Use appropriate cables for PV module connection.

Recommended cable size for PV connection (3KVA model):

ModelTypical AmperageCable SizeTorque
3KVA27A10 AWG1.4~1.6 Nm

PV Module Selection

When selecting PV modules, consider:

  1. Open circuit Voltage (Voc) of PV modules must not exceed the inverter's max PV array open circuit voltage.
  2. Voc should be higher than the minimum battery voltage.

Solar Charging Mode Specifications (3KVA Inverter):

  • Max. PV Array Open Circuit Voltage: 500VDC
  • PV Array MPPT Voltage Range: 60VDC~500VDC
  • Max. PV INPUT CURRENT: 27A

Example module configurations for 450Wp and 550Wp panels:

Solar Panel Spec. (reference) - 450WpSOLAR INPUTQ'ty of panelsTotal input powerInverter Model
Vmp: 34.67Vdc
Imp: 13.82A
Voc: 41.25Vdc
Isc: 12.98A
3 pcs in serial3 pcs1,350 W3KVA
4 pcs in serial4 pcs1,800 W
5 pcs in serial5 pcs2,250 W
6 pcs in serial6 pcs2,700 W
7 pcs in serial7 pcs3,150 W
8 pcs in serial8 pcs3,600 W
9 pcs in serial9 pcs4,050 W
Solar Panel Spec. (reference) - 550WpSOLAR INPUTQ'ty of panelsTotal input powerInverter Model
Vmp: 42.48Vdc
Imp: 12.95A
Voc: 50.32Vdc
Isc: 13.70A
3 pcs in serial3 pcs1,650 W3KVA
4 pcs in serial4 pcs2,200 W
5 pcs in serial5 pcs2,750 W
6 pcs in serial6 pcs3,300 W
7 pcs in serial7 pcs3,850 W

PV Module Wire Connection

Steps for PV module connection:

  1. Remove 6mm insulation sleeve from positive and negative conductors.
  2. Check polarity of connection cables and PV input connectors. Connect positive (+) to positive (+), and negative (-) to negative (-).
  3. Ensure wires are securely connected.

Final Assembly

After all wiring is complete, re-attach the bottom cover using two screws.

Dry Contact Signal

A dry contact (3A/250VAC) is available on the rear panel to signal external devices when battery voltage reaches a warning level.

Unit StatusConditionDry contact port: NC & CDry contact port: NO & C
Power OffUnit is off and no output is powered.CloseOpenCloseOpen
Power OnOutput is powered from Utility.CloseOpenCloseOpen
Battery voltage < Low DC warning voltageOpenCloseOpenClose
Program 01 set as UtilityCloseOpenCloseOpen
Battery voltage > Setting value in Program 13 or battery charging reaches floating stageCloseOpenCloseOpen
Program 01 is set as SBU or SUB or Solar firstBattery voltage < Setting value in Program 12OpenCloseOpenClose
Battery voltage > Setting value in Program 13 or battery charging reaches floating stageCloseOpenCloseOpen

OPERATION

Power ON/OFF

After proper installation and battery connection, press the On/Off switch on the unit to turn it on.

Operation and Display Panel

The front panel features an LCD display, three indicators, and four function keys for monitoring and control.

  • LED Indicators:
    • AC/INV (Green): Solid On = Utility mode; Flashing = Battery/PV mode.
    • CHG (Green): Solid On = Battery fully charged; Flashing = Battery charging.
    • FAULT (Red): Solid On = Fault occurs; Flashing = Warning condition occurs.
  • Function Keys:
    • ESC: To exit setting mode.
    • UP: To go to previous selection.
    • DOWN: To go to next selection.
    • ENTER: To confirm selection or enter setting mode.

LCD Setting

To enter setting mode, press and hold the ENTER button for 3 seconds. Use UP/DOWN to select programs and ENTER to confirm or ESC to exit.

Setting Programs:

  • Program 01: Output source priority
    • Utility first (default): Utility power is primary. Solar/battery power loads when utility is unavailable.
    • Solar first: Solar power is primary. Battery supplements if solar is insufficient.
    • SBU priority: Utility powers loads. If utility fails (solar unavailable or low battery voltage), it switches to solar/battery.
    • SUB priority: Solar powers loads first. If solar is insufficient, battery powers loads. Utility powers loads only if solar is unavailable or battery voltage is low.
    • SUF priority: Solar powers loads first. If solar is insufficient, utility powers loads. Solar also charges the battery, and excess solar can feed back to the grid.
  • Program 02: Maximum charging current (Configures total charging current for solar and utility chargers)
    • Default: 60A. Range: Max AC charging current to SPEC, not less than AC charging current (Program 11).
  • Program 03: AC input voltage range
    • Appliances (default): 70-140VAC.
    • UPS: 95-140VAC.
    • Generator: 95-140VAC (compatible with generators, but output may be unstable).
  • Program 05: Battery type
    • AGM (default)
    • Flooded
    • User-Defined: Allows setting battery charge voltage and low DC cut-off voltage in programs 26, 27, 29.
    • Support PYLON US2000 Protocol 3.5 Version
    • Standard communication Protocol form inverter supplier
    • Lithium battery without communication: Default values suitable for lithium batteries without communication. Charge voltage and cut-off voltage can be set in programs 26, 27, 29.
  • Program 06: Auto restart when overload occurs
    • Restart disable (default)
    • Restart enable
  • Program 07: Auto restart when over temperature occurs
    • Restart disable (default)
    • Restart enable
  • Program 08: Output voltage
    • Options: 110V, 115V, 120V (default).
  • Program 09: Output frequency
    • Options: 50Hz, 60Hz (default).
  • Program 10: Auto bypass
    • Manual (default)
    • Auto: Bypasses automatically if mains power is normal, even if the switch is off.
  • Program 11: Maximum utility charging current
    • Default: 30A. Range: 5A to Max. AC charging current of SPEC.
  • Program 12: Setting voltage point back to utility source (for SBU/Solar first in Program 01)
    • 24V models: Default 23V. Range: 22.0V to 28.6V. Must be less than Program 13 value.
  • Program 13: Setting voltage point back to battery mode (for SBU/Solar first in Program 01)
    • 24V models: Default Battery fully charged. Range: 24V to full (Program 26 - 0.4V). Must be greater than Program 12 value.
  • Program 16: Charger source priority
    • Solar first: Solar charges battery first; Utility charges if solar is unavailable.
    • Solar and Utility (default): Both solar and utility charge battery simultaneously.
    • Only Solar: Solar is the sole charger source, regardless of utility availability. (In Battery mode, only solar charges if available/sufficient).
  • Program 18: Buzzer mode
    • Mode1: Buzzer mute.
    • Mode2: Buzzer sounds on input source changes or specific warning/fault.
    • Mode3: Buzzer sounds on specific warning/fault.
    • Mode4 (default): Buzzer sounds on fault.
  • Program 19: Auto return to default display screen
    • Return to default display screen (default): Returns to default display after 1 minute of inactivity.
    • Stay at latest screen: Displays the last viewed screen.
  • Program 20: Backlight control
    • Backlight on (default)
    • Backlight off
  • Program 23: Overload bypass
    • Bypass disable (default)
    • Bypass enable: Unit transfers to line mode if overload occurs in battery mode.
  • Program 25: Modbus ID Setting
    • Range: 001 to 247.
  • Program 26: Bulk charging voltage (C.V voltage)
    • If User-Defined in Program 05, this program can be set. Value must be >= Program 27. Increment: 0.1V. 24V models: Default 28.2V, Range 24.0V to 30.0V.
  • Program 27: Floating charging voltage
    • If User-Defined in Program 05, this program can be set. 24V models: Default 27.0V. Range: 24.0V to Program 26 value.
  • Program 29: Low DC cut-off voltage
    • If User-Defined in Program 05, this program can be set. Value must be < Program 12. Increment: 0.1V. 24V models: Default 21.0V, Range 20.0V to 27.0V.
  • Program 32: Bulk charging time (C.V stage)
    • Automatically (Default): Inverter judges time automatically.
    • Range: 5 min to 900 min. Increment: 5 min.
  • Program 33: Battery equalization
    • If "USE" in Program 05, this program can be set.
    • If "Flooded" or "User-Defined" in Program 05, this program can be set.
    • Options: Battery equalization disable (default), Battery equalization.
  • Program 34: Battery equalization voltage
    • 24V models: Default 29.2V. Range: Floating voltage ~ 31V. Increment: 0.1V.
  • Program 35: Battery equalized time
    • 60min (default). Range: 0 min to 900 min.
  • Program 36: Battery equalized timeout
    • 120min (default). Range: 0 min to 900 min.
  • Program 37: Equalization interval
    • 30 days (default). Range: 1 to 90 days.
  • Program 38: Allow neutral and grounding of AC output to be connected together
    • Disable (Default): Neutral and grounding of AC output is disconnected.
    • Enable: Neutral and grounding of AC output is connected.
  • Program 39: Equalization activated immediately
    • If equalization is enabled (Program 33), this program can be set. "Enable" activates equalization immediately. "Disable" cancels it until the next scheduled interval (Program 37).
  • Program 41: Automatic activation for lithium battery
    • Disable automatic activation (default). If Program 05 is "LIx" and battery is not detected, unit activates automatically. Restart required for activation.
  • Program 42: Manual activation for lithium battery
    • Default: disable activation. If Program 05 is "LIx" and battery is not detected, this allows manual activation.
  • Program 43: Setting SOC point back to utility source (for SBU/Solar first in Program 01)
    • Default 50%, settable 5%~50%. Minimum value must be greater than Program 45.
  • Program 44: Setting SOC point back to battery mode (for SBU/Solar first in Program 01)
    • Default 95%, settable 60%~100%.
  • Program 45: Low DC cut-off SOC
    • Default 20%, settable 3%~30%. Max value must be less than Program 43.
  • Program 46: Maximum discharge current protection
    • Default OFF. Only for Single model. Protects against excessive discharge current.
  • Program 48: Lithium battery activation time
    • Settable range: 6s~300s. Default: 6s.

BATTERY EQUALIZATION

The equalization function helps reverse negative chemical effects like stratification and removes sulfate crystals, improving battery capacity. Periodic equalization is recommended.

How to Apply Equalization Function

Enable battery equalization in LCD setting program 33. Then, apply via:

  1. Setting equalization interval in program 37.
  2. Activating equalization immediately in program 39.

When to Equalize

Equalization starts when the set interval is reached or when activated immediately, entering the "Equalize" stage.

Equalize charging time and timeout

During the Equalize stage, the controller charges the battery until it reaches the equalization voltage. Constant-voltage regulation maintains this voltage until the set equalized time expires. If the battery voltage does not reach the equalization voltage point by the timeout, the controller may extend the time or stop equalization and return to float stage.

Diagrams illustrate the charging stages (Bulk, Absorption, Float, Equalize) and voltage levels.

SETTING FOR LITHIUM BATTERY

Lithium Battery Connection

For lithium battery use, ensure the BMS communication cable connects the battery's RS485 port to the inverter's RS485 communication port.

Steps:

  1. Assemble battery terminals as per recommended specifications (similar to Lead acid).
  2. Connect the RS485 port of the battery to the inverter's BMS(RS485) communication port.

Lithium battery communication enables re-configuration of charging parameters and control of charging based on battery status.

The RS485 communication cable is included. The inverter's RS485 port pin assignment is provided.

Lithium battery communication and setting

Ensure the BMS communication cable is connected between the battery and inverter. This cable transmits information for re-configuring charging voltage, current, and discharge cut-off voltage, and controls charging.

RS485 Port Pin Assignment:

Pin numberRS485 Port
PIN1RS485-B
PIN2RS485-A
PIN7RS485-A
PIN8RS485-B

LCD setting

After connection, configure settings:

  1. Select program 05 as the lithium battery type.
  2. Confirm settings for programs 12, 13, 29, 31, 41, 42.

Note: Programs 43, 44, 45 are available only with successful communication and will override programs 12, 13, 29.

LCD Display

If communication is successful, the LCD shows:

  • Item 1: Communication successful icon (Li).
  • Item 2: Max lithium battery charging voltage.
  • Item 3: Max lithium battery charging current.
  • Item 4: Lithium battery discharging is forbidden (Li flashes once every 1 second).
  • Item 5: Lithium battery charging is forbidden (Li flashes once every 2 seconds).
  • Item 6: Lithium battery SOC (%).

Setting for PYLON US2000 lithium battery

1. PYLONTECH US2000 lithium battery setting:

Dip Switches: Four dip switches set baud rate and battery group address. "ON" = "1", "OFF" = "0".

  • Dip 1: "ON" for baud rate 9600.
  • Dip 2, 3, 4: Reserved for battery group address. Set on the master battery.

2. Process of install:

  1. Connect inverter and lithium battery using the RS485 cable (as Fig 1).
  2. Switch on the lithium battery.
  3. Press the power button for over three seconds to start the lithium battery.
  4. Turn on the inverter.
  5. Select battery type "Li2" in LCD program 5. The battery icon on the LCD will light up if communication is successful.

Setting for lithium battery without communication

This is for applications avoiding BMS protection due to communication loss. Follow these steps:

  1. Obtain battery BMS specifications: Max charging voltage, Max charging current, Discharging protection voltage.
  2. Set battery type as "USE" (User-Defined) in Program 05.
  3. Set C.V voltage (Program 26) as Max charging voltage of BMS - 0.5V.
  4. Set floating charging voltage (Program 27) as the C.V voltage.
  5. Set Low DC cut-off voltage (Program 29) ≥ discharging protection voltage of BMS + 2V.
  6. Set Max charging current (Program 02) to be less than the Max charging current of BMS.
  7. Set voltage point back to utility source (Program 12) ≥ Low DC cut-off voltage + 1V, or the inverter will warn of low battery voltage.

Remark: Finish settings without turning on the inverter (LCD only). Restart the inverter after completing settings.

SPECIFICATIONS

Table 1 Line Mode Specifications

INVERTER MODEL3KVA
Input Voltage WaveformSinusoidal (utility or generator)
Nominal Input Voltage120Vac
Low Loss Voltage95Vac±7V (UPS)
70Vac±7V (Appliances)
Low Loss Return Voltage100Vac±7V (UPS);
75Vac±7V (Appliances)
High Loss Voltage140Vac±7V
High Loss Return Voltage135Vac±7V
Max AC Input Voltage150Vac
Nominal Input Frequency50Hz / 60Hz (Auto detection)
Low Loss Frequency40±1Hz
Low Loss Return Frequency42±1Hz
High Loss Frequency65±1Hz
High Loss Return Frequency63±1Hz
Output Short Circuit ProtectionBattery mode: Electronic Circuits
Efficiency (Line Mode)>95% (Rated R load, battery full charged )
Transfer Time10ms typical (UPS);
20ms typical (Appliances)

Output power derating: When AC input voltage drops to 95V, the output power will be derated.

Diagram shows output power derating based on input voltage.

Table 2 Inverter Mode Specifications

INVERTER MODEL3KVA
Rated Output Power3.0KVA/3.0KW
Output Voltage WaveformPure Sine Wave
Output Voltage Regulation120Vac±5%
Output Frequency50Hz or 60Hz
Peak Efficiency94%
Surge Capacity2* rated power for 5 seconds
Nominal DC Input Voltage24Vdc
Cold Start Voltage23.0Vdc
No Load Power Consumption<55w
Low DC Warning VoltageJust for AGM and Flooded
@load < 20%: 22.0Vdc
@20% ≤ load < 50%: 21.4Vdc
@load ≥ 50%: 20.4Vdc
Low DC Warning Return VoltageJust for AGM and Flooded
@load < 20%: 23.0Vdc
@20% ≤ load < 50%: 22.4Vdc
@load ≥ 50%: 21.2Vdc
Low DC Cut-off VoltageJust for AGM and Flooded
@load < 20%: 21.0Vdc
@20% ≤ load < 50%: 20.4Vdc
@load ≥ 50%: 19.2Vdc

Table 3 Charge Mode Specifications

Utility Charging ModeINVERTER MODEL3KVA
Max Charging Current (PV+AC) (@VI/P=230Vac)100Amp
Max Charging Current (AC) (@VI/P=230Vac)60Amp
Bulk Charging VoltageFlooded Battery: 29.2Vdc
AGM / Gel Battery: 28.2Vdc
Floating Charging Voltage27Vdc
Overcharge Protection32Vdc
Charging Algorithm3-Step

Diagram shows the charging curve with stages: Bulk (Constant Current), Absorption (Constant Voltage), Maintenance (Floating).

Solar InputINVERTER MODEL3KVA
Rated Power4000W
Max. PV Array Open Circuit Voltage500Vdc
PV Array MPPT Voltage Range60Vdc~500Vdc
Max. Input Current27A
Max. Charging Current(PV)100A

Table 4 General Specifications

INVERTER MODEL3KVA
Operating Temperature Range-10°C to 55°C
Storage temperature-15°C~ 60°C
Humidity5% to 95% Relative Humidity (Non-condensing)
Dimension(D*W*H), mm350x312x110
Net Weight, kg6.9

TROUBLE SHOOTING

ProblemLCD/LED/BuzzerExplanation / Possible causeWhat to do
Unit shuts down automatically during startup process.LCD/LEDs and buzzer will be active for 3 seconds and then complete off.The battery voltage is too low1. Re-charge battery.
2. Replace battery.
No response after power on.No indication.1. The battery voltage is far too low.
2. Battery polarity is connected reversed.
1. Check if batteries and the wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Mains exist but the unit works in battery mode.Input voltage is displayed as 0 on the LCD and green LED is flashing.Input protector is trippedCheck if AC breaker is tripped and AC wiring is connected well.
When the unit is turned on, internal relay is switched on and off repeatedly.Green LED is flashing.Insufficient quality of AC power. (Shore or Generator)1. Check if AC wires are too thin and/or too long.
2. Check if generator (if applied) is working well or if input voltage range setting is correct. (UPS→Appliance)
Green LED is flashing.Set "Solar First" as the priority of output source.Change output source priority to Utility first.
LCD display and LEDs are flashingBattery is disconnected.Check if battery wires are connected well.
Buzzer beeps continuously and red LED is on.Fault code 07Overload error. The inverter is overload 110% and time is up.Reduce the connected load by switching off some equipment.
Fault code 05Output short circuited.Check if wiring is connected well and remove abnormal load.
Fault code 02Internal temperature of inverter component is over 100°C.Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Fault code 03Battery is over-charged.Return to repair center.
The battery voltage is too high.Check if spec and quantity of batteries are meet requirements.
Fault code 06/22Output abnormal (Inverter voltage below than 190Vac or is higher than 260Vac)1. Reduce the connected load.
2. Return to repair center
Fault code 08/09/15Internal components failed.Return to repair center.
Fault code 13Over current or surge.Restart the unit, if the error happens again, please return to repair center.
Fault code 14Bus voltage is too low.If the wires is connected well, please return to repair center.
Another fault code

Wi-Fi Plug Pro Quick Installation Guideline

This section provides instructions for installing and configuring the Wi-Fi Plug Pro.

Schematic diagram of the Remove and install the wireless antenna

Diagrams show the connection of the wireless antenna and the unit's ports (AC, RS485, WiFi).

Add Datalogger

  1. Login to the account and click the "Datalogger" button. Tap the "+" button on the top-right of the datalogger page.
  2. Enter the required information to add the datalogger. The PN number is located on the machine appliance label. (Initial Password: 12345678)

Download the APP

  1. Scan the QR code to download the "SmartESS" APP (iPhone App Store or Android phone).
  2. Open the APP, click "Registration", and select "Mobile phone Registration" or "Email Registration".
  3. Turn on Bluetooth or WiFi as needed.

Bluetooth connected to the digital collector

  1. Click "Toolbox" and select "BLE network" or "Wi-Fi network".
  2. If using Bluetooth distribution network, scan for nearby devices on the "Bluetooth Pairing" page, find the PN corresponding to the digital collector, and click "Connect".

Networking Settings

  1. Select the corresponding 2.4G WiFi, enter the password, and click "Start Connecting to the Network".

Diagrams illustrate the APP interface for pairing and network configuration.

The document also lists a part number: 371-00185-00.

Models: ANJ-3KW-24V-LV-WIFI, 3KVA Hybrid Solar Inverter Charger, Hybrid Solar Inverter Charger, Solar Inverter Charger, Inverter Charger, Charger

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