1. Introduction and Overview
The Voltacon Conversol MAX 8 kW Off-Grid Solar Inverter is a 4th generation combined solar inverter and charger designed for standalone off-grid systems. This unit integrates a high-efficiency MPPT solar charge controller, a pure sine wave inverter, and a smart battery charger into a single compact device. It is engineered for high performance, easy diagnostics, and compatibility with various battery types, including lithium-ion batteries (e.g., Pylon US2000, US3000, Li-2021).
Key features include:
- Integrated MPPT Solar Charge Controller: Maximizes solar power harvesting.
- Built-in Wi-Fi and Bluetooth: For mobile monitoring and data management.
- BMS Communication Ready: Compatible with lithium-ion batteries for optimized charging and discharge.
- Parallel Functionality: Supports up to 6 units for increased power output.
- Battery Independent Design: Can operate without batteries or allow for later battery addition.
- Wide MPPT Voltage Range: 90 VDC to 450 VDC.
- Cold Start Function: Ensures operation even in low temperatures.
- Removable LCD Control Module: Can be used as a remote panel.
2. Safety Instructions
Please read all instructions and warnings carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, severe injury, or death. Keep this manual for future reference.
- Installation must be performed by qualified personnel.
- Ensure all power sources (PV, AC, Battery) are disconnected before installation or maintenance.
- Do not disassemble the inverter. There are no user-serviceable parts inside.
- Install in a well-ventilated area, away from flammable materials and corrosive gases.
- Ensure proper grounding of the unit.
- Wear appropriate personal protective equipment (PPE) during installation.
3. Setup and Installation
This section provides guidance for the physical installation and electrical connections of your Conversol MAX inverter.
3.1 Physical Installation
The inverter should be mounted vertically on a sturdy surface in a clean, dry, and well-ventilated indoor environment. Ensure adequate clearance around the unit for proper airflow and heat dissipation.
Figure 3.1: Internal view of the Conversol MAX 8 kW inverter installed within an electrical enclosure, showing various connections and the front LCD panel. This image illustrates a typical installation setup.
Figure 3.2: Close-up view of the inverter's front panel, displaying the LCD screen and control buttons, along with the lower connection terminals for PV input, AC input/output, and battery connections.
3.2 Electrical Connections
Refer to the diagram below for proper connection of PV arrays, AC input/output, and batteries. All connections must be secure and comply with local electrical codes.
Figure 3.3: Rear panel of the Conversol MAX 8 kW inverter, highlighting the PV1 and PV2 inputs, AC input, AC output, battery terminals, parallel connection ports, and communication interfaces.
- PV Input: Connect your solar panel arrays to the PV1 and PV2 terminals. Ensure the voltage and current are within the specified limits (90-450VDC MPPT range, 450VDC max open circuit voltage).
- Battery Connection: Connect the 48V battery bank to the designated battery terminals. Observe correct polarity (+/-).
- AC Input: Connect the grid or generator AC power source to the AC input terminal.
- AC Output: Connect your AC loads to the AC output terminal.
- Parallel Connection: For multi-unit systems, use the parallel connection ports to link up to 6 inverters.
- Communication Ports: Utilize the USB, Wi-Fi, Bluetooth, and BMS communication ports for monitoring and advanced battery management.
4. Operating Instructions
The Conversol MAX inverter features an intuitive LCD display and control buttons for configuration and monitoring. The removable LCD module allows for remote operation.
4.1 Initial Startup
- Ensure all electrical connections are secure and correct.
- Turn on the battery breaker.
- Turn on the PV array breaker.
- Turn on the AC input breaker (if connected to grid/generator).
- Press the power button on the inverter. The LCD display will illuminate, and the inverter will begin its startup sequence.
4.2 LCD Display and Settings
The LCD display provides real-time information on system status, input/output voltages, currents, power, and battery charge levels. Use the navigation buttons to browse through different screens and access system settings. Detailed instructions for specific settings (e.g., output source priority, charging current) are provided in the full product manual.
4.3 Monitoring
The integrated Wi-Fi and Bluetooth interfaces allow for remote monitoring via a dedicated mobile application or PC software. This enables users to view system performance, receive alerts, and adjust settings from a distance.
5. Maintenance
Regular maintenance ensures optimal performance and longevity of your inverter. Always disconnect all power sources before performing any maintenance.
- Cleaning: Periodically clean the exterior of the inverter with a dry cloth. Ensure ventilation openings are free from dust and debris.
- Connection Check: Annually inspect all electrical connections for tightness and signs of corrosion.
- Battery Inspection: Follow the manufacturer's maintenance guidelines for your specific battery type.
- Environmental Check: Ensure the installation environment remains within the specified temperature and humidity ranges.
6. Troubleshooting
This section outlines common issues and basic troubleshooting steps. For complex problems, contact technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No battery power, loose connections, faulty power button | Check battery voltage and connections. Ensure battery breaker is on. |
| No AC output | Overload, short circuit, inverter fault, battery low | Reduce load. Check for short circuits. Recharge battery. Consult LCD error codes. |
| PV charging not active | No solar input, PV voltage too low/high, PV connections loose | Check solar panel connections and sunlight. Verify PV voltage is within MPPT range. |
| Communication issues (Wi-Fi/Bluetooth) | Incorrect settings, signal interference, module fault | Verify communication settings. Ensure device is within range. Restart inverter. |
7. Technical Specifications
Below are the detailed technical specifications for the Voltacon Conversol MAX 8 kW Off-Grid Solar Inverter.
Figure 7.1: Mechanical drawing illustrating the dimensions (in mm) and a general overview of the connection ports for the Conversol MAX 7.2kW and 8kW models.
| Feature | Specification |
|---|---|
| Rated Power | 8000 VA / 8000 W |
| AC Voltage Regulation (Batt. Mode) | 230 VAC ± 5% |
| Surge Power | 16000 VA |
| Efficiency (Peak) | 90% - 93% |
| Transfer Time | 10 ms (for PCs), 20 ms (for home appliances) |
| Waveform | Pure Sine Wave |
| Battery Voltage | 48 VDC |
| Floating Charge Voltage | 54 VDC |
| Overcharge Protection | 66 VDC |
| Maximum PV Array Power | 8000 W (2 x 4000 W) |
| MPPT Range @ Operating Voltage | 90 VDC ~ 450 VDC |
| Maximum PV Array Open Circuit Voltage | 450 VDC |
| Maximum Solar Charge Current | 80 A |
| Maximum AC Charge Current | 80 A |
| Maximum Total Charge Current | 160 A |
| Maximum Efficiency (Solar to AC) | 98% |
| Dimensions (D x W x H) | 147.4 x 280.0 x 505.6 mm (approximate, based on mechanical drawing) |
| Net Weight | 18.4 kg |
| Operating Humidity | 5% to 95% Relative Humidity (non-condensing) |
| Operating Temperature | 0 °C to 55 °C |
| Storage Temperature | -15 °C to 60 °C |
| Parallel Capability | Up to 6 units |
8. Warranty and Support
For warranty information, technical support, or service requests, please refer to the warranty card included with your product or contact VOLTACON customer service. Ensure you have your product model number (Conversol MAX 8kW-48V) and serial number ready when contacting support.