1. Introduction
1.1 Overview
The EPIPDB-COM series is designed to charge two independent battery banks simultaneously. It is ideal for applications such as motorhomes, caravans, and boats, where a starter battery and a leisure battery are used. This controller features no load terminals, focusing solely on efficient dual-battery charging. The charging percentages for each battery can be manually adjusted to suit specific power management needs.
1.2 Features
- Two battery charging priority programmable (from 0-100%).
- Intelligent System Optimum Control.
- 12V/24V automatic system voltage detection.
- Battery type selection: Sealed, Flooded, or Gel.
- PWM charging with different frequency options.
- Local external temperature compensation.
- Remote temperature sensor (optional).
- Utilizes MOSFET as an electronic switch, eliminating mechanical switches.
- Remote meter MT-1 is optional for enhanced monitoring.
- Electronic protection features: Over charging, short-circuit, reverse polarity, and reverse current to PV protection.
2. Safety Information
WARNING:
Do not install the controller in humid environments, areas with salt spray, corrosion, grease, flammable or explosive materials, or places with excessive dust accumulation. Avoid any other severe environments that could compromise the controller's operation or safety.
CAUTION:
This is a common-negative controller. For common-negative systems (e.g., RV systems), using a common-negative controller is recommended. The controller may be damaged if a common-positive controller is used and the positive electrode is grounded in a common-negative system. Ensure the grounding terminal on the controller shell is properly grounded to shield electromagnetic interference and prevent electric shock.
3. Package Contents
3.1 Controller Package
- 1 x EPEVER EPIPDB-COM Dual Battery Solar Controller (10A or 20A model)
- 1 x User Manual (English)
3.2 Optional MT-1 Remote Meter Package (Sold Separately)
- 1 x MT-1 Remote Meter
- 1 x RS485 Cable (Model: CC-RS485-RS485-1000U-MT)
- 1 x Instruction Manual (English)
Note: The MT-1 Remote Meter and its accessories are not included with the controller and must be purchased separately.
4. Product Appearance and Components
The controller features several indicators and connection points:
- Local Temp. Sensor: Measures ambient temperature for battery regulation.
- For Battery 1: Indicates charging status and errors for Battery #1.
- For Battery 2: Indicates charging status and errors for Battery #2.
- Remote Temp. Sensor (Optional): A connection point for an external sensor to remotely monitor battery temperature and regulate battery voltage. If connected, the controller automatically uses data from the remote sensor.
- Remote Meter Connection (Optional): An 8-PIN RJ-45 communication port for connecting the MT-1 remote meter.
- Setting Button: Used to adjust various operating parameters.
- LED Indicators: Three LEDs flash to indicate different specifications during mode setting.
5. Setup and Installation
5.1 Connection Diagram
Follow the diagram above to connect the components. Ensure correct polarity for all connections.
5.2 Connection Steps
Connect the components in the following order (1-6 as shown in Figure 2 and Figure 3):
- Connect with Battery #1.
- Connect with Battery #2.
- Connect with the PV array (solar panel).
- Connect the remote temperature sensor (if optional sensor is used).
- Connect the remote meter (MT-1) to the remote meter connection port (if optional meter is used).
- Ensure all connections are secure and correct before powering on.
IMPORTANT:
Always connect the batteries first, then the solar panel. Disconnect in reverse order (solar panel first, then batteries).
6. Operating Instructions
6.1 Mode Setting
The controller uses three LEDs to indicate different specifications during mode setting. To adjust a setting:
- Observe the three flashing LEDs. Each LED corresponds to a specific setting (Battery Type, Charging Priority, Charging Frequency).
- Press and hold the setting button for 5 seconds until the number corresponding to the desired setting starts flashing.
- Choose the desired number for the setting.
- Release the button. The selected number will be saved automatically.
6.1.1 1st LED: Battery Type Setting
Use the 1st LED to select the battery type:
| Number Shows | Battery Type |
|---|---|
| 1 | Sealed battery |
| 2 | Gel battery |
| 3 | Flooded battery |
6.1.2 2nd LED: Charging Priority Setting
Set the charging percentage for Battery #1. The controller will automatically calculate the remaining percentage for Battery #2.
| Number Shows | Battery #1 Charging Percentage | Battery #2 Charging Percentage |
|---|---|---|
| 0 | 0% | 100% |
| 1 | 10% | 90% |
| 2 | 20% | 80% |
| 3 | 30% | 70% |
| 4 | 40% | 60% |
| 5 | 50% | 50% |
| 6 | 60% | 40% |
| 7 | 70% | 30% |
| 8 | 80% | 20% |
| 9 | 90% (pre-set) | 10% |
Note: During normal charging, the controller charges batteries according to the set percentages. If one battery becomes fully charged (e.g., Battery #1), more charge current will be diverted to the other battery (Battery #2). The controller automatically reverts to the set percentages when Battery #1's voltage drops. If only one battery is detected, all charging current will be directed to that battery.
6.1.3 3rd LED: Charging Frequency Setting
Use the 3rd LED to select the PWM charging frequency:
| Number Shows | PWM Charging Frequency |
|---|---|
| 0 | 25Hz (pre-set) |
| 1 | 50Hz |
| 2 | 100Hz |
6.2 Using the MT-1 Remote Meter (Optional)
The MT-1 remote meter is an optional accessory that connects to the EPIPDB-COM series controller via an RS485 cable. It provides a clear LCD display for monitoring system status and parameters remotely.
The MT-1 display shows various icons and indicators for system status, including battery status, solar input, temperature, and error conditions.
7. Troubleshooting
| No. | LED Status | Troubleshooting |
|---|---|---|
| 1 | LED blinking | Short circuit. Check whether the PV and battery connection is correct. |
| 2 | LED slowly flashing | Fully charged |
| 3 | LED ON | In charging |
| 4 | LED frequent flashing | No charging or any battery is detected. |
| 5 | LED OFF | No battery or system over voltage. |
8. Specifications
| Item | EPIPDB-COM-10 | EPIPDB-COM-20 |
|---|---|---|
| Nominal system voltage | 12/24VDC Auto | |
| Rated charge current | 10A | 20A |
| Battery Type | Sealed; Gel; Flooded | |
| Equalize charging voltage | Sealed: 14.6V; Gel: No; Flooded: 14.8V | |
| Boost charging voltage | Sealed: 14.4V; Gel: 14.2V; Flooded: 14.6V | |
| Float charging voltage | Sealed/Gel/Flooded: 13.8V | |
| Maximum solar voltage | 30V (12V System); 55V (24V System) | |
| Battery voltage range | 8 ~ 15V | |
| Boost time | 120 minutes | |
| Self-consumption | 4mA at night; 10mA at charging | |
| Communication port | 8-PIN RJ-45 | |
| Temp. compensation | -5mV/°C/2V | |
| Terminals | 4mm² | |
| Environment temperature | -35°C ~ +55°C | |
| Net weight | 250g | |
Note: The above parameters are measured for a 12V system. For a 24V system, please double the values where applicable.
8.1 Mechanical Drawing
9. Maintenance
To ensure optimal performance and longevity of your EPEVER Dual Battery Solar Controller, follow these maintenance guidelines:
- Regular Inspection: Periodically check all wiring connections for tightness and corrosion. Ensure no loose connections are present.
- Cleanliness: Keep the controller free from dust, dirt, and moisture. Use a dry, soft cloth for cleaning. Do not use abrasive cleaners or solvents.
- Ventilation: Ensure adequate airflow around the controller to prevent overheating. Do not block ventilation openings.
- Environmental Conditions: Operate the controller within its specified environmental temperature range.
- Firmware Updates: Check the manufacturer's website for any available firmware updates to ensure your controller has the latest features and bug fixes.
10. User Tips
- Choosing the Right Amperage: When selecting between the 10A and 20A models, consider the total current output of your solar panels. Ensure the controller's rated charge current is sufficient for your solar array to prevent overloading.
- Battery Compatibility: Always verify that your battery type (Sealed, Gel, or Flooded) is correctly selected in the controller settings to ensure proper charging and battery health.
- Remote Monitoring: For easier monitoring of your system's status and parameters, consider purchasing the optional MT-1 Remote Meter. It provides a convenient display without needing to access the controller directly.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the official EPEVER website or contact your authorized dealer. Keep your purchase receipt as proof of purchase for warranty claims.
Manufacturer: HUIZHOU EPEVER TECHNOLOGY CO., LTD.
