How to Use RELAY-G5D: Examples, Pinouts, and Specs

The RELAY-G5D is a versatile and robust general-purpose relay designed for switching high voltage and high current loads with a low voltage control signal. This relay is widely used in various applications, including automation and control systems, automotive electronics, and other scenarios where electrical isolation between control circuitry and power circuitry is required.

• Home automation systems
• Industrial control panels
• Automotive electronics
• Power supply control
• Safety-critical applications

The following table outlines the key technical specifications of the RELAY-G5D:

1. Powering the Coil:

   • Apply a 5V DC signal to pins 1 and 2 to energize the coil. This will cause the relay to switch from the NC contact to the NO contact.

2. Connecting the Load:

   • Connect the common terminal of your load to pin 3 (COM).
   • Connect the other terminal of your load to pin 4 (NO) if you want the load to be powered when the relay is energized, or to pin 5 (NC) if you want the load to be powered when the relay is not energized.

• Ensure that the control signal does not exceed the rated coil voltage of 5V DC.
• Do not exceed the maximum switching capacity of the relay to avoid damage.
• Use a flyback diode across the relay coil to prevent voltage spikes when the coil is de-energized.
• Consider the ambient temperature and ventilation in your design as it may affect the relay performance.

• Relay Does Not Actuate:

  • Check if the control signal is present and within the rated voltage.
  • Verify that the coil is not damaged.

• Intermittent Operation:

  • Ensure that the connections are secure.
  • Check for any signs of damage or wear on the relay contacts.

• If the relay coil is not energizing, verify the power supply and connections.
• For contact issues, inspect for dirt or oxidation and clean the contacts if necessary.
• Always follow the rated specifications to prevent premature failure of the relay.

Q: Can I use the RELAY-G5D with an Arduino? A: Yes, the RELAY-G5D can be controlled using an Arduino digital output pin, but you may need a transistor to drive the relay coil if the Arduino cannot provide sufficient current.

Q: What is the life expectancy of the RELAY-G5D? A: The life expectancy depends on the load and the frequency of operation. Refer to the manufacturer's datasheet for detailed endurance ratings.

Q: Can the RELAY-G5D switch AC and DC loads? A: Yes, the RELAY-G5D can switch both AC and DC loads within its rated voltage and current specifications.

Below is an example code snippet for controlling the RELAY-G5D with an Arduino UNO. This example assumes the relay coil is connected to digital pin 7 and uses a transistor to drive the relay.

const int relayPin = 7; // Relay control pin

void setup() {
  pinMode(relayPin, OUTPUT); // Set relay pin as output
}

void loop() {
  digitalWrite(relayPin, HIGH); // Energize the relay coil
  delay(1000);                  // Wait for 1 second
  digitalWrite(relayPin, LOW);  // De-energize the relay coil
  delay(1000);                  // Wait for 1 second
}

Note: Ensure you have a suitable transistor and flyback diode in place when connecting the relay to the Arduino to protect the microcontroller from inductive spikes.