KKMOON DC 6~80V Voltage Detection Relay Switch Controller

1. Product Overview

The KKMOON DC 6~80V Voltage Detection Relay Switch Controller is a versatile device designed for digital display DC voltage detection and relay output control. It features a clear LED display and two buttons for easy operation, making it suitable for various applications such as voltage detection switches, battery over/under voltage protection, and discharge monitoring.

The controller comes with a protective cover and is available in two models: A30-U1 and A30-U3. Both models share the same core hardware and electrical performance, but differ in their operational modes.

2. Model Differences

While both models provide reliable voltage detection and relay control, they offer different levels of functionality:

• A30-U1: This model operates in a single mode, providing basic voltage control for relay ON/OFF functionality without any delay settings.
• A30-U3: This advanced model offers four distinct operating modes, allowing for more complex control scenarios:
• P-1: Relay close delay time and display off setting.
• P-2: Voltage Control Timer-A (relay opens first).
• P-3: Voltage Control Timer-B (relay closes first).
• P-4: Voltage range control.

3. Specifications

4. Setup and Wiring

Proper wiring is essential for the safe and correct operation of the relay switch controller. Refer to the diagrams below for common application scenarios.

4.1 Terminal Identification

The controller features the following terminals:

• Voltage+: Input for voltage detection (DC 0.1-99.9V).
• GND: Ground connection.
• Power+: Power supply input for the module (DC 6-80V).
• NC (Normally Close): Relay contact, closed when the relay is de-energized.
• COM (Common): Common terminal for the relay contact.
• NO (Normally Open): Relay contact, open when the relay is de-energized.

4.2 Wiring Diagrams

Important: Ensure all power is disconnected before making any wiring connections. Incorrect wiring can damage the device or connected components.

5. Operation

The controller features a digital LED display and two buttons, 'SET' and 'ENTER', along with up/down arrows for navigation and value adjustment.

5.1 Basic Operation (A30-U1 & A30-U3)

• Power On: Connect the module to a DC 6~80V power source via the 'Power+' and 'GND' terminals. The LED display will light up.
• Voltage Display: The LED display shows the current detected voltage (DC 0~99.9V) from the 'Voltage+' and 'GND' terminals.
• Setting Limits: Use the 'SET' button to enter the setting mode. The display will show parameters like 'upper limit' and 'lower limit'. Use the up/down arrows to adjust values and 'ENTER' to confirm.
• Relay Activation: The relay will activate (change state) when the detected voltage falls below the set lower limit or rises above the set upper limit, depending on the configured mode.

5.2 Advanced Operation (A30-U3 Specific Modes)

The A30-U3 model offers four programmable modes for more complex control logic. The settings automatically save after power off.

• P-1 (Relay Close Delay & Display Off): In this mode, you can set a delay time (0-999 seconds) for the relay to close after a voltage condition is met. You can also configure the LED display to turn off after a certain period to save power.
• P-2 (Voltage Control Timer-A - Relay Open First): This mode allows for timed operations where the relay opens first when a voltage condition is met, and then closes after a set delay.
• P-3 (Voltage Control Timer-B - Relay Close First): Similar to P-2, but the relay closes first when the voltage condition is met, and then opens after a set delay.
• P-4 (Voltage Range Control): This mode enables precise control based on a defined voltage range. The relay will activate or deactivate when the voltage enters or exits the specified upper and lower limits.

Setting Delay Times and Sensitivity (A30-U3):

• Output Timer Range: Adjustable from 0 to 999 seconds. This determines how long the relay will delay opening or closing once the voltage reaches the set value.
• Detection Sampling Delay: Adjustable from 0.1 to 0.9 seconds. This parameter controls the detection sensitivity, influencing how quickly the controller reacts to voltage changes.

6. Maintenance

To ensure the longevity and optimal performance of your relay switch controller, follow these maintenance guidelines:

• Environmental Protection: The controller comes with a protective cover. Ensure it is properly installed to shield the internal components from dust, moisture, and physical damage.
• Load Management: Be aware that high voltage DC electric arcs can damage relay contacts. For electrical loads above DC 60V, ensure the load current is less than 10A to prevent premature wear or failure of the relay.
• Cleaning: Keep the device clean and free from debris. Use a soft, dry cloth for cleaning. Avoid using harsh chemicals or abrasive materials.
• Connection Integrity: Periodically check all wiring connections to ensure they are secure and free from corrosion. Loose connections can lead to intermittent operation or damage.

7. Troubleshooting

If you encounter issues with your controller, refer to the following common problems and solutions:

• Controller Not Powering On:
  • Check the power supply connection to 'Power+' and 'GND'. Ensure the voltage is within the DC 6~80V operating range.
  • Verify that the power source is active and providing sufficient current.
• Relay Not Activating/Deactivating as Expected:
  • For A30-U1: Double-check the set upper and lower voltage limits. Ensure the detected voltage is crossing these thresholds as intended.
  • For A30-U3: Review the selected operating mode (P-1, P-2, P-3, P-4) and its specific settings (delay times, voltage limits, sampling delay). Incorrect mode configuration is a common cause of unexpected behavior.
  • Verify the wiring to the load and ensure the 'COM', 'NO', and 'NC' terminals are correctly connected for your application.
  • Ensure the load current does not exceed the relay's maximum contact load (30A/250V AC or 30A/30V DC for NO; 20A/250V AC or 20A/30V DC for NC).
• Inaccurate Voltage Readings:
  • Ensure the 'Voltage+' and 'GND' detection terminals are securely connected to the voltage source you wish to monitor.
  • Check for any loose wiring or corrosion at the terminals.
  • If using A30-U3, check if a voltage correction factor has been applied in the settings (refer to the operation flowchart).
• Difficulty with Programming (A30-U3):
  • Carefully follow the operation flowchart (Figure 7) and the descriptions for each mode (P-1 to P-4).
  • Practice adjusting values and confirming settings using the 'SET' and 'ENTER' buttons.
  • Start with simple settings before attempting complex configurations.

8. User Tips

• Understand Your Application: Before connecting, clearly define whether you need battery discharge protection, charge control, or battery switching. This will guide your wiring and programming choices.
• Test Safely: When setting up, especially with new wiring configurations, it's advisable to test with lower voltages or non-critical loads first to ensure the relay behaves as expected before connecting to your primary system.
• Label Connections: For complex setups, labeling your wires and terminals can prevent confusion and errors during installation and future maintenance.
• Review A30-U3 Modes: If you have the A30-U3 model, take time to understand the four different operating modes (P-1, P-2, P-3, P-4). Each mode offers unique functionality that can be tailored to specific needs, such as adding delays to prevent rapid cycling of the relay.

9. Warranty and Support

This product comes with a 12-month Manufacturer's Limited Warranty for defective items, starting from the date of receipt. This warranty does not cover items damaged due to misuse or improper handling after receipt. Accessories included with the product are covered by a 3-month warranty.

In the event of a defect, the item must be reported and returned within the warranty period, preferably in its original packaging. Please provide your order number and a clear description of the defect when contacting support.

For any issues or concerns, please contact the seller directly before leaving feedback. This allows for a satisfactory resolution of your concerns.