Akozon MPS-V-PLUS-3.5KW
Akozon MPS-V-PLUS-3.5KW Pure Sine Wave Inverter Controller User Manual
Model: MPS-V-PLUS-3.5KW
Introduction
The Akozon MPS-V-PLUS-3.5KW is a versatile pure sine wave inverter, solar charger, and battery charger, engineered to deliver uninterrupted power in a compact form factor. It integrates an MPPT solar charge controller for optimized battery performance and is compatible with both utility grid and generator power sources. This device is suitable for a wide range of applications, including solar cell roof installations, carport photovoltaic systems, RV solar power, and general household appliance use. Key safety features include overload protection, short-circuit protection, and a cold start function.
Setup
Safety Precautions
- Ensure the inverter is installed in a well-ventilated area, away from flammable materials and moisture.
- All electrical connections must be performed by qualified personnel in accordance with local electrical codes.
- Before making any connections, ensure all power sources (AC, DC, Solar) are disconnected.
- Wear appropriate personal protective equipment (PPE) during installation.
Installation Steps
- Mounting: Securely mount the inverter to a vertical surface using appropriate fasteners. Ensure adequate clearance for ventilation.
- Battery Connection: Connect the battery cables to the inverter's DC input terminals. Ensure correct polarity (+ to + and - to -).
- Solar Panel Connection: Connect the solar panel array to the PV input terminals. Verify correct polarity and ensure the solar input voltage is within the specified range.
- AC Input Connection: Connect the utility grid or generator AC power source to the AC input terminals.
- AC Output Connection: Connect your household or office loads to the AC output terminals.
- Communication Port: If desired, connect a communication cable to the COMM port for monitoring or remote control.
- Grounding: Ensure the inverter is properly grounded to prevent electrical hazards.

Figure 1: Overview of the Inverter with Connection Points.

Figure 2: Communication (COMM) Port.

Figure 3: AC Input/Output Terminals and Cooling Fan.
Operating Instructions
Powering On/Off
- To Power On: After all connections are secure, switch the main power breaker to the ON position. The LCD display will illuminate.
- To Power Off: Disconnect all AC loads, then switch the main power breaker to the OFF position. Disconnect solar and battery inputs if performing maintenance.

Figure 4: Power Switch.
LCD Display and Settings
The integrated LCD display provides real-time operational status and allows for easy adjustment of various parameters. Use the navigation buttons (UP, DOWN, ENTER, ESC) to browse menus and modify settings.
- Battery Power Adjustment: Adjust the battery charging current and voltage limits to match your battery type and capacity.
- Charger Priority: Set the priority for AC charger and solar charger. Options typically include:
- Utility First: Prioritizes utility power for charging and loads.
- Solar First: Prioritizes solar power for charging and loads.
- SBU (Solar-Battery-Utility): Prioritizes solar, then battery, then utility.

Figure 5: LCD Display and Control Panel.
Operating Modes
The inverter supports various operating modes to optimize power usage based on available sources:
- Inverter Mode: Converts DC power from batteries or solar panels into AC power for connected loads.
- AC Charger Mode: Charges connected batteries using utility grid power.
- Solar Charger Mode: Charges connected batteries using solar panel power via the MPPT controller.
- Hybrid Mode: Combines solar, battery, and utility power to provide continuous power and optimize energy consumption.

Figure 6: Operation Diagrams (Without Battery and With Battery).
Maintenance
Regular maintenance ensures the longevity and optimal performance of your inverter controller.
- Cleaning: Periodically clean the exterior of the inverter with a dry, soft cloth. Ensure ventilation openings are free from dust and debris. Do not use liquid cleaners.
- Connection Checks: Annually inspect all electrical connections (battery, solar, AC input/output) for tightness and signs of corrosion. Tighten any loose connections.
- Battery Inspection: If using lead-acid batteries, check electrolyte levels and terminal cleanliness as per battery manufacturer guidelines.
- Environmental Check: Ensure the installation environment remains within specified temperature and humidity ranges.
- Firmware Updates: Check the manufacturer's website for any available firmware updates for improved performance or new features.
Important: Always disconnect all power sources before performing any maintenance or inspection.
Troubleshooting
This section provides solutions to common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No DC input from battery; Main power switch off; Blown fuse/breaker | Check battery connections and voltage; Ensure power switch is ON; Check and reset/replace fuses/breakers. |
| No AC output | Overload; Short circuit; Low battery voltage; AC output breaker tripped | Reduce load; Check for short circuits in wiring; Charge battery; Reset AC output breaker. |
| Battery not charging | Solar panels not connected/producing power; AC input not present; Charging settings incorrect | Check solar panel connections and sunlight; Verify AC input power; Adjust charging settings via LCD. |
| Overload alarm | Connected load exceeds inverter capacity | Disconnect some loads to reduce total power consumption. |
| Short circuit alarm | Short circuit detected on AC output | Immediately disconnect all loads and inspect wiring for short circuits. |
If the problem persists after attempting these solutions, please contact customer support.
Technical Specifications (MPS-V-PLUS-3.5KW)
| Feature | Specification |
|---|---|
| Inverter Mode | |
| Rated Power | 3500 W |
| DC Input | 24 VDC, 162 A |
| AC Output | 230 V CA, 50/60 Hz, 15.2 A, 1Φ |
| AC Mode | |
| AC Input | 230 V CA, 50/60 Hz, 24.9 A, 1Φ |
| DC Output | 27 VDC max 80 A (30 A standard) |
| AC Output | 230 V CA, 50/60 Hz, 15.2 A, 1Φ |
| Solar Mode | |
| Rated Power | 5000 W |
| Maximum Charger Current | 100 A |
| Rated Operating Voltage | 240 VDC |
| Maximum Solar Voltage | 500 VDC |
| MPPT Voltage Range | 120-450 VDC |
| Material | Cold rolled steel, PCB, Copper |
Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the product packaging or contact Akozon customer service directly. Keep your purchase receipt as proof of purchase for warranty claims.
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