DC6-40V Battery Charge Discharge Switch Module (XH-M608) User Manual

1. Introduction

The Aideepen XH-M608 is a versatile DC6-40V Battery Charge Discharge Switch Module designed to provide automatic undervoltage and overvoltage protection for various battery types, particularly lithium batteries within its specified voltage range. This module intelligently monitors battery voltage and controls a connected load or charger via an integrated relay, preventing overcharging and over-discharging to prolong battery life. Its compact size and clear digital display make it an ideal solution for battery management applications.

2. Specifications

3. Component Identification

Familiarize yourself with the key components of the XH-M608 module:

• Digital Tube: 3-digit LED display for showing voltage values.
• Relay: Electromechanical switch for controlling external circuits (charger/load).
• Input Terminal Interface (Power): Screw terminals for connecting the DC 6-40V power supply to the module.
• Output Terminals: Screw terminals for connecting the controlled device. Labeled as:
  • Normally Closed (NC): Connected to Public when relay is OFF.
  • Public (COM): Common terminal for the relay switch.
  • Always Start (NO): Connected to Public when relay is ON.
• Voltage Measurement Terminal: Terminals for connecting to the battery whose voltage is to be monitored.
• Mode Setting Button (SET): Used to enter and adjust settings.
• DC+ / DC- Buttons: Used to increase or decrease voltage values during setting.
• LED Lights: Indicators for module status.

4. Setup and Wiring

Proper wiring is crucial for the safe and correct operation of the XH-M608 module. Always ensure power is disconnected before making any connections.

4.1. Basic Voltmeter Function Wiring

To use the module simply as a voltmeter to display the input voltage:

1. Connect your DC 6-40V power source to the module's Input Terminal Interface (labeled '电源' or 'Input').
2. The digital display will show the input voltage.

4.2. Undervoltage/Overvoltage Protection Wiring (Load Control)

This configuration allows the module to disconnect or connect a load based on battery voltage thresholds.

1. Connect your DC 6-40V power source to the module's Input Terminal Interface.
2. Connect the battery you wish to monitor to the Voltage Measurement Terminal (labeled '电压测量' or 'V+ / V-'). Ensure correct polarity.
3. Connect your load to the Output Terminals (Relay). You will typically use the Public (COM) terminal and either the Normally Closed (NC) or Always Start (NO) terminal, depending on whether you want the load to be ON or OFF when the relay is de-energized.

4.3. Control 220V Charging Function (Charger Control)

This setup enables the module to automatically control a 220V AC charger to prevent battery overcharging.

1. Connect a DC 6-40V power source to the module's Input Terminal Interface. This powers the module itself.
2. Connect the battery to be charged to the Voltage Measurement Terminal of the module. This allows the module to read the battery voltage.
3. Connect the 220V AC charger's input (L and N lines) through the module's relay. Typically, one line (e.g., 'L') of the 220V AC input to the charger is routed through the Public (COM) and Normally Closed (NC) terminals of the module's relay. This means the charger will be connected when the relay is OFF (battery voltage below threshold) and disconnected when the relay is ON (battery voltage reaches stop threshold).
4. Ensure the charger's output is connected to the battery for charging.

Important Safety Note: When working with 220V AC, extreme caution is required. Ensure all connections are secure and insulated. If you are not experienced with AC wiring, seek professional assistance.

5. Operation and Settings

The XH-M608 module allows you to set specific voltage thresholds for starting and stopping the relay action.

5.1. Setting Voltage Thresholds

The module operates based on two main voltage settings:

• Start Voltage (UPL): The voltage at which the relay will activate (e.g., start charging or disconnect load).
• Stop Voltage (dNL): The voltage at which the relay will deactivate (e.g., stop charging or connect load).

To set these values:

1. Enter Setting Mode: Press and hold the SET button for approximately 3 seconds until the digital display starts flashing.
2. Set Start Voltage (UPL): While in setting mode, the display will show 'UPL' followed by the current start voltage. Use the DC+ and DC- buttons to adjust this value.
3. Set Stop Voltage (dNL): Press the SET button briefly to switch to the stop voltage setting. The display will show 'dNL' followed by the current stop voltage. Use the DC+ and DC- buttons to adjust this value.
4. Save Settings: After setting both UPL and dNL, press and hold the SET button again for approximately 3 seconds until the display stops flashing and returns to showing the current battery voltage. The settings are now saved.

5.2. Example: 12V Battery Charging Control

For a 12V battery, a typical charging voltage range might be 10.8V (undervoltage) to 14.4V (overvoltage). To control a charger:

• Set Start Voltage (UPL) to 10.8V. When the battery voltage drops below 10.8V, the relay will activate, connecting the charger.
• Set Stop Voltage (dNL) to 14.4V. When the battery voltage reaches 14.4V, the relay will deactivate, disconnecting the charger.

This automatic process ensures the battery is charged when needed and prevents overcharging, extending its lifespan.

6. Maintenance

• Keep Clean: Ensure the module is free from dust and debris. Use a soft, dry cloth for cleaning.
• Environmental Conditions: Operate the module within its specified temperature and humidity ranges. Avoid exposure to extreme temperatures, moisture, or corrosive environments.
• Connection Integrity: Periodically check all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to erratic behavior or damage.
• Avoid Overload: Do not exceed the relay's maximum current and voltage ratings (10A 250VAC / 10A 30VDC) to prevent damage to the module and connected equipment.

7. Troubleshooting

• Module Not Powering On:
  - Check the input voltage supply (DC 6-40V) and ensure correct polarity.
  - Verify that the power source is functional.
• Digital Display Not Showing Correct Voltage:
  - Ensure the battery or voltage source is correctly connected to the Voltage Measurement Terminal with correct polarity.
  - Check for loose connections or damaged wires.
• Relay Not Switching:
  - Verify that the Start Voltage (UPL) and Stop Voltage (dNL) are set correctly and are appropriate for your battery's voltage range.
  - Check if the current battery voltage is within the thresholds that should trigger the relay.
  - Ensure the load/charger is correctly wired to the Output Terminals (COM, NC/NO).
  - Confirm that the load current does not exceed the relay's maximum rating (10A).
• Module Overheating:
  - This could indicate an overload condition. Ensure the current drawn by the controlled device does not exceed the relay's specifications.

8. User Tips

• Match Load to Relay Rating: Always ensure that the electrical load you intend to control (e.g., charger or device) does not exceed the relay's maximum current and voltage ratings (10A 250VAC / 10A 30VDC). Exceeding these limits can damage the module and pose a safety risk.
• Consider Power Consumption: While the module itself has low power consumption, be mindful of the overall power usage in your system, especially for battery-powered applications.
• Test Settings Carefully: After adjusting voltage thresholds, test the module's behavior with a multimeter to confirm it switches the relay at the desired voltages before connecting critical equipment.

9. Warranty and Support

For any issues or questions regarding the XH-M608 module, please contact your retailer or the manufacturer's customer support. Keep your purchase receipt for warranty claims. This manual provides general guidance; specific application requirements may vary.