Walfront 4 Channel Relay Module Board 12V User Manual

1. Pwodwi souview

The Walfront 4 Channel Relay Module Board is a versatile electronic component designed to control high-power devices using low-voltage signals. It features photocoupler isolation for enhanced safety and stable performance, protecting your control circuit from the load circuit. This 12V version is suitable for various applications requiring switching capabilities.

Figi 1: Top view of the Walfront 4 Channel Relay Module Board.

The module incorporates a fault-tolerant design, ensuring that the relay remains in its current state even if the control line is accidentally disconnected. It provides clear visual feedback with a green power indicator light and red indicator lights for each of the four relays, showing their operational status.

Figure 2: Walfront Relay Module highlighting power and relay state indicator lights, and terminal connections.

2. Karakteristik

• Photocoupler Isolation: Utilizes patch photocoupler isolation for strong driving ability and stable performance, with a current of 5mA.
• Miltip Voltage Opsyon: Available in 5V, 12V, and 24V operating voltages (this specific model is 12V).
• High & Low Level Trigger: Each relay can be triggered by either a high-level or low-level signal, configurable via jumper settings.
• Fault-Tolerant Design: Prevents unintended relay activation even if the control line breaks.
• User-Friendly Interfaces: All interfaces are designed for direct connection via terminal blocks, ensuring convenient wiring.
• Endikatè vizyèl: Features a green power indicator light and individual red indicator lights for each of the four relays.
• Twou Mounting: Four fixing holes are provided for secure installation.

3. Espesifikasyon

Figure 3: The Walfront 4 Channel Relay Module is available in 5V, 12V, and 24V versions. This manual pertains to the 12V model.

4. Enstalasyon ak fil elektrik

Proper setup and wiring are crucial for the safe and correct operation of the relay module. Always ensure power is disconnected before making any connections.

4.1 Modil Layout

Figi 4: Detay anlè view of the relay module showing power, input, and output terminals.

4.2 Koneksyon ekipman pou pouvwa

Connect a 12V DC power supply to the module's power input terminals:

• DC+: Connect to the positive (+) terminal of your 12V DC power supply.
• DC-: Connect to the negative (-) terminal of your 12V DC power supply.

The green power indicator LED will illuminate when power is correctly applied.

4.3 Input Signal Connection

Connect your control signals (e.g., from a microcontroller like Arduino, Raspberry Pi) to the input terminals:

• IN1, IN2, IN3, IN4: These are the control input pins for each of the four relays. Connect your digital output pins from your control device to these inputs.

4.4 Load Connection (Relay Output)

Each relay has three terminals for connecting your load:

• NON (Nòmalman louvri): This terminal is open (disconnected) when the relay is de-energized and closes (connects to COM) when the relay is energized.
• COM (Komen): This is the common terminal. Connect one side of your load's power source here.
• NC (Nòmalman fèmen): This terminal is closed (connected to COM) when the relay is de-energized and opens (disconnects from COM) when the relay is energized.

Choose between NO and NC depending on whether you want the load to be ON or OFF by default when the relay is not triggered.

Figi 5: Egzample schematic for connecting a load to a relay terminal.

4.5 Jumper Settings for Trigger Level (S1-S4)

The module allows you to select the trigger level for each relay independently using jumpers S1, S2, S3, and S4. Each jumper corresponds to one relay (S1 for IN1, S2 for IN2, etc.).

• LOW (L): When the jumper is placed on the 'LOW' side, the relay will activate when the corresponding input pin (INx) receives a low-level signal (0V or ground).
• HIGH (H): When the jumper is placed on the 'HIGH' side, the relay will activate when the corresponding input pin (INx) receives a high-level signal (e.g., 5V for a 5V logic system).

Ensure the jumper settings match the logic level of your control device's output signals.

5. Operasyon Enstriksyon

Once the module is correctly wired and powered, you can control the relays by sending appropriate signals to the IN1-IN4 pins.

• Aktivasyon Relè: When an input pin (INx) receives the configured trigger signal (high or low, as set by the jumper), the corresponding relay will energize. The red indicator light for that relay will illuminate.
• Chanje chaj: Upon activation, the relay's internal switch will change state: NO will connect to COM, and NC will disconnect from COM. This will switch your connected load ON or OFF.
• Dezaktivasyon Relè: When the input pin (INx) receives the opposite signal (or no signal, depending on your control circuit), the relay will de-energize. The red indicator light will turn off, and the relay contacts will return to their default (Normally Closed/Normally Open) state.

Pou egzanpample, if a jumper is set to 'HIGH' for IN1, sending a 5V signal to IN1 will activate Relay 1. If it's set to 'LOW', sending a 0V signal will activate Relay 1.

6. Antretyen

The Walfront 4 Channel Relay Module is designed for durability and requires minimal maintenance. Follow these guidelines to ensure its longevity:

• Kenbe sèk: Protect the module from moisture and humidity to prevent corrosion and short circuits.
• Lapwòpte: Keep the board free from dust and debris. Use a soft, dry brush or compressed air for cleaning if necessary. Avoid using liquid cleaners.
• Tanperati: Fè fonksyone modil la nan limit tanperati espesifye a. Evite chalè oswa frèt ekstrèm.
• Domaj Fizik: Handle the module with care to prevent physical damage to components or solder joints.
• Power Off Before Adjustments: Always disconnect power before making any wiring changes or adjusting jumpers.

NAN. Depanaj

If you encounter issues with your relay module, consider the following troubleshooting steps:

• Modil pa limen:
  • Check if the 12V DC power supply is correctly connected to DC+ and DC-.
  • Verifye ke ekipman pou pouvwa a ap bay bon vòltaj latage (12V) and sufficient current.
  • Ensure the power indicator (green LED) is illuminated.
• Relè pa aktive:
  • Confirm that the input signal (INx) from your control device is correctly connected.
  • Check the jumper setting (S1-S4) for the corresponding relay. Ensure it matches the logic level of your control signal (HIGH for high-level trigger, LOW for low-level trigger).
  • Verify that your control device is actually sending the correct trigger signal. Use a multimeter to check the voltage at the INx pin.
  • Note: Some 3.3V microcontrollers may not reliably drive the relay when set to active-LOW if the module expects a true 0V for low. Ensure your control signal is strong enough.
  • Check if the red indicator LED for the specific relay illuminates when the trigger signal is applied.
• Chaj la pa chanje:
  • Ensure the load is correctly wired to the COM and either NO or NC terminals.
  • Verify that the load itself is functional and its power source is connected.
  • Check if the load's current and voltage requirements are within the relay's specifications (AC 250V/10A, DC 30V/10A). Overloading can damage the relay.
• Operasyon tanzantan:
  • Inspect all wiring for loose connections.
  • Ensure the power supply is stable and free from voltage fluctuations.

8. Garanti ak sipò

Walfront products are manufactured to high-quality standards. For any technical assistance or support inquiries, please refer to the retailer or contact Walfront customer service through their official channels. Please retain your proof of purchase for warranty claims.