The EPEVER EPIPDB-COM series (models EPIPDB-COM-10 and EPIPDB-COM-20) are Dual Battery Solar Controllers designed for managing the charging of two batteries from a PV array. These controllers utilize Pulse Width Modulation (PWM) technology for efficient charging.
Function Description:
The primary function of the EPIPDB-COM controller is to regulate the charging process from a solar panel (PV array) to two separate batteries. It ensures that both batteries are charged according to user-defined priorities and battery types, preventing overcharging and optimizing battery lifespan. The controller is a common-negative type, meaning the negative terminals of the PV array and batteries can be grounded simultaneously, or any negative terminal can be grounded. The grounding terminal on the controller shell must be grounded to shield electromagnetic interference and prevent electric shock.
Important Technical Specifications:
- Models: EPIPDB-COM-10, EPIPDB-COM-20
- Nominal System Voltage: 12/24VDC Auto
- Rated Charge Current:
- EPIPDB-COM-10: 10A
- EPIPDB-COM-20: 20A
- Battery Type Compatibility: 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
- Temperature Compensation: -5mV/°C/2V
- Terminals: 4mm²
- Environment Temperature: -35°C ~ +55°C
- Net Weight: 250g
Note: All parameters are measured in a 12V system condition. For a 24V system, these values should be doubled.
Usage Features:
The EPIPDB-COM controller offers several user-configurable features through its mode setting interface:
- Battery Type Setting: Users can select the battery type (Sealed, Gel, or Flooded) for optimal charging. This is configured using the 1st LED, where 1=Sealed, 2=Gel, and 3=Flooded.
- Charging Priority Setting: This allows users to set the charging percentage for Battery #1, with the controller automatically allocating the remaining percentage to Battery #2. The 2nd LED is used for this setting, with options ranging from 0% (100% for Battery #2) to 90% (10% for Battery #2, pre-set). If one battery becomes fully charged, the controller diverts more current to the other battery. If only one battery is detected, all charging current goes to that battery.
- PWM Charging Frequency Setting: The 3rd LED allows users to select the PWM charging frequency (25Hz pre-set, 50Hz, or 100Hz).
- Local Temperature Sensor: Measures ambient temperature to regulate battery voltage.
- Remote Temperature Sensor (Optional): An external sensor can be connected to remotely measure battery temperature for more accurate voltage regulation. When connected, the controller automatically uses data from the RTS.
- Remote Meter Connection: An RJ-45 port is available for connecting a remote meter, allowing for external monitoring and control.
- LED Indicators: Dedicated LEDs for Battery #1 and Battery #2 indicate charging status and errors.
- LED Blinking: Short circuit, check PV and battery connections.
- LED Slowly Flashing: Fully charged.
- LED ON: In charging.
- LED Frequent Flashing: No charging or no battery detected.
- LED OFF: No battery or system over voltage.
Maintenance Features:
- Troubleshooting Guide: The manual provides a clear troubleshooting section based on LED status, helping users quickly identify and resolve common issues such as short circuits, full charge status, charging in progress, no charging, or system overvoltage.
- Environmental Considerations: The device is designed for specific environmental conditions. Users are warned against installing the controller in humid, salt spray, corrosive, greasy, flammable, explosive, dust accumulative, or other severe environments to ensure its longevity and safe operation.
- Common-Negative Design: The common-negative design simplifies grounding and system integration, but users are cautioned against using a common-positive controller in a common-negative system, as it may damage the controller.
The EPIPDB-COM series controllers are robust solutions for managing dual battery solar charging systems, offering flexibility in configuration and clear status indicators for ease of use and maintenance.
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