How to Use ATS 230V 2P external trigger: Examples, Pinouts, and Specs

The ATS 230V 2P External Trigger is an Automatic Transfer Switch designed for 230V applications with a 2-pole configuration. This device ensures uninterrupted power supply by automatically switching between two power sources, such as a primary utility grid and a backup generator. It is particularly useful in residential, commercial, and industrial settings where power reliability is critical. The external trigger feature allows for remote control or automation of the switching process, enhancing flexibility and ease of use.

• Backup power systems for homes and offices
• Industrial equipment requiring continuous power
• Data centers and server rooms
• Hospitals and medical facilities
• Renewable energy systems (e.g., solar or wind power integration)

The ATS 230V 2P External Trigger has the following terminal connections:

1. Wiring the Power Sources:

   • Connect the primary power source (e.g., utility grid) to the L1-IN and N1-IN terminals.
   • Connect the secondary power source (e.g., generator) to the L2-IN and N2-IN terminals.
   • Ensure proper grounding for safety.

2. Connecting the Load:

   • Connect the load (e.g., appliances or equipment) to the L-OUT and N-OUT terminals.

3. External Trigger Setup:

   • Connect the external trigger control signal (e.g., from a microcontroller or relay) to the TRIG+ and TRIG- terminals.
   • Use a 12V DC signal to activate the external trigger.

4. Power On:

   • Turn on the primary and secondary power sources.
   • The ATS will automatically switch to the primary source by default and switch to the secondary source during a primary source failure.

• Ensure all connections are secure and insulated to prevent short circuits or electrical hazards.
• Verify that the power sources are within the rated voltage and current limits of the ATS.
• Use appropriately rated circuit breakers or fuses for additional protection.
• Avoid exposing the ATS to moisture, dust, or extreme temperatures.

The external trigger feature can be controlled using an Arduino UNO. Below is an example code to activate the ATS using a digital output pin:

// Example code to control ATS external trigger using Arduino UNO
// Connect Arduino digital pin 7 to TRIG+ and GND to TRIG-

const int triggerPin = 7; // Define the pin connected to TRIG+

void setup() {
  pinMode(triggerPin, OUTPUT); // Set triggerPin as an output
  digitalWrite(triggerPin, LOW); // Ensure trigger is initially off
}

void loop() {
  // Simulate switching to secondary power source
  digitalWrite(triggerPin, HIGH); // Activate external trigger
  delay(5000); // Keep trigger active for 5 seconds
  
  digitalWrite(triggerPin, LOW); // Deactivate external trigger
  delay(10000); // Wait for 10 seconds before next activation
}

Note: Ensure the Arduino's 5V output is stepped up to 12V using a transistor or relay circuit to match the ATS trigger voltage requirement.

1. Can the ATS handle inductive loads like motors?

   • Yes, but ensure the load's inrush current does not exceed the ATS's rated current.

2. What happens if both power sources fail?

   • The ATS will not supply power to the load. Consider adding a UPS for critical systems.

3. Can I use the ATS for DC power sources?

   • No, this ATS is designed for 230V AC applications only.

4. Is manual switching possible with this ATS?

   • No, this model is fully automatic and relies on external triggers for control.

5. How do I test the ATS functionality?

   • Simulate a power failure by disconnecting the primary source and observe the switch to the secondary source.

By following this documentation, users can effectively integrate the ATS 230V 2P External Trigger into their power systems for reliable and seamless operation.