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A connection point for RTS(option) to remotely monitor battery temperature.
Measures ambient temperature. Battery regulation is adjusted accordingly.
Provides charging & battery status and errors.
Provides charging & battery status and errors.
A communication port for the remote meter.
Configuration for the type of battery used, with specific settings for Sealed, Gel, and Flooded batteries.
Setting the percentage of charging current allocated to battery #1, with the remainder going to battery #2.
Selection of PWM charging frequency, with options for 25Hz, 50Hz, and 100Hz.
Order of data displayed on the meter: Solar panel, battery 1, battery 2, other data.
Instructions for setting data using keys K4, K1, K2, K3 for navigation and modification.
Controls for backlight timer and brilliance, with various options for duration and brightness.
Configuration for automatic or manual data repetition, with options for navigation keys.
Procedure to check system status and connections using key combination K3+K4.
Method to reset data like max, min, and Ah values to zero using key combination K1+K2.
Key specifications including rated voltage, backlight current, working temperature, humidity, and communication cable.
Indicates potential issues like battery disconnect, over voltage, no remote sensor, over current, or PV short-circuit.
Describes behavior when meter runs on individual power or communication cutoff, showing limited data.
Explains how battery capacity is visually represented by flashing strips, based on voltage.
A connection point for RTS(option) to remotely monitor battery temperature.
Measures ambient temperature. Battery regulation is adjusted accordingly.
Provides charging & battery status and errors.
Provides charging & battery status and errors.
A communication port for the remote meter.
Configuration for the type of battery used, with specific settings for Sealed, Gel, and Flooded batteries.
Setting the percentage of charging current allocated to battery #1, with the remainder going to battery #2.
Selection of PWM charging frequency, with options for 25Hz, 50Hz, and 100Hz.
Order of data displayed on the meter: Solar panel, battery 1, battery 2, other data.
Instructions for setting data using keys K4, K1, K2, K3 for navigation and modification.
Controls for backlight timer and brilliance, with various options for duration and brightness.
Configuration for automatic or manual data repetition, with options for navigation keys.
Procedure to check system status and connections using key combination K3+K4.
Method to reset data like max, min, and Ah values to zero using key combination K1+K2.
Key specifications including rated voltage, backlight current, working temperature, humidity, and communication cable.
Indicates potential issues like battery disconnect, over voltage, no remote sensor, over current, or PV short-circuit.
Describes behavior when meter runs on individual power or communication cutoff, showing limited data.
Explains how battery capacity is visually represented by flashing strips, based on voltage.
This document describes the EPIP20-DB series duo-battery charging solar controller, designed for use in RVs, caravans, and boats. This controller is specifically intended for use with solar panels.
The controller's primary function is to manage the charging of two batteries from a solar panel. It offers various settings to optimize battery charging, including battery type selection, charging priority between the two batteries, and charging frequency. The device features a local temperature sensor that measures ambient temperature and adjusts battery regulation accordingly. For enhanced accuracy, an optional remote temperature sensor (RTS) can be connected to monitor battery temperature remotely. If no RTS is connected, the controller utilizes data from the local temperature sensor. The controller automatically switches to the RTS when it is connected.
Key usage features include the ability to set the battery type for optimal charging. Users can select between sealed, gel, or flooded battery types. A crucial feature is the charging priority setting, which allows users to define the percentage of charge current allocated to battery #1. The controller automatically calculates the remaining charge for battery #2. For example, if battery #1 is set to receive 50% of the charge, battery #2 will receive the other 50%. In normal charging status, the controller divides the charging current according to these settings. However, if battery #1 becomes fully charged, more current will be diverted to battery #2. Conversely, if battery #1's voltage drops, the controller automatically reverts to the preset charging distribution. A smart detection mechanism ensures that if only battery #1 is connected, all available charging current is directed to it. The charging frequency can also be adjusted, with options for 25Hz, 50Hz, or 100Hz PWM charging.
The controller includes indicators for charging status and potential errors for both battery #1 and battery #2. These indicators provide visual feedback on the charging process and any issues that may arise.
For maintenance and troubleshooting, the controller provides LED indicators to signal various operational states. A blinking LED can indicate a short circuit, prompting the user to check the PV and battery connections. A slowly flashing LED signifies that the battery is fully charged. A solid LED indicates active charging. Frequent flashing without charging suggests a battery is present but not receiving a charge. An extinguished LED means there is no battery connected or an over-voltage condition.
An optional remote meter can be connected to the controller via an 8-pin RJ-45 communication port. This remote meter provides detailed information about the solar panel, battery 1, battery 2, and other system data. The meter's display cycles through this information, and users can navigate through the data using dedicated keys. The remote meter also allows for data setting, such as adjusting the time and date. Its backlight feature can be configured with various timer options (e.g., 5, 10, 20, 30 seconds, or always on/off) and brightness levels (full or half). The data display on the remote meter can be set to repeat automatically every 3 seconds or to require manual navigation.
The remote meter also offers a system checking function, accessible by pressing specific keys, which displays related data and connection status. If a connection is faulty, it will indicate "NO." For instance, if the remote temperature sensor is not connected, the meter will show "thermometer NO." "OPEn" indicates no battery connection or over-voltage. The meter also allows users to erase accumulated data (such as max, min, and Ah) to zero. The battery capacity is represented by a strip display on the remote meter, where each strip signifies 20% of the battery's capacity. Flashing strips indicate the current capacity range (e.g., the first strip flashing means 1-19% capacity). This calculation is based on the battery voltage, not the actual chemical capacity.
Trouble indicators on the remote meter, represented by an exclamation mark symbol, alert users to potential issues such as a disconnected or open-circuit battery, over-voltage, a missing remote temperature sensor probe, overcharging current, or a solar PV short-circuit. These symbols disappear automatically once the issue is resolved. The remote meter's telecommunication port ensures that even if the meter loses individual power or communication, it will still display basic information like temperature, battery, and solar panel symbols, albeit with "____" for data. Once communication is restored, the full display resumes. It is important to use a correct and appropriately sized cable for communication to avoid data errors, as long cables can introduce inaccuracies. The data displayed on the remote meter updates every 20 seconds.
General| Model | EPIP20-DB Series |
|---|---|
| Rated Voltage | 12V/24V Auto |
| Max. Charge Current | 20A |
| Max. Input Power | 260W (12V), 520W (24V) |
| Operating Temperature | -35℃ ~ +55℃ |
