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Added a wiring diagram
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Jman
Jman
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Problem

My PLC is getting voltage spikes in the onboard ADC readings when I turn on actuated components elsewhere in my electrical system. I need to protect my PLC from these spikes because they cause errors in my data and can lead to bad logic from the program in my PLC.

More Information

I am watering my yard with a pump and water from a rain barrel. I have an ESP32 breakout board connected to an AC relay, a water level variable resistance sensor, and a DC valve. When my AC relay toggles my pump I get spikes in my ADC readings that can last over a few seconds and the same happens for my valve but these can last for around 5 to 8 seconds.

The ESP32 is powered by 5V from a 5V/12V AC to DC converter with the water level sensor and valve connected to the 12V output, the valve is switched with a MOSFET controlled by the ESP32. My AC pump is connected to the same AC power source as my AC/DC converter.

Question

  1. How can I best protect my ADC readings from prolonged changes in voltage when my valve is opening?
  2. How can I best protect my AC/DC converter or its output from being affected by the AC pump?

Attached is a wiring diagram Wiring Diagram

Problem

My PLC is getting voltage spikes in the onboard ADC readings when I turn on actuated components elsewhere in my electrical system. I need to protect my PLC from these spikes because they cause errors in my data and can lead to bad logic from the program in my PLC.

More Information

I have an ESP32 breakout board connected to an AC relay, a water level variable resistance sensor, and a DC valve. When my AC relay toggles my pump I get spikes in my ADC readings that can last over a few seconds and the same happens for my valve but these can last for around 5 to 8 seconds.

The ESP32 is powered by 5V from a 5V/12V AC to DC converter with the water level sensor and valve connected to the 12V output, the valve is switched with a MOSFET controlled by the ESP32. My AC pump is connected to the same AC power source as my AC/DC converter.

Question

  1. How can I best protect my ADC readings from prolonged changes in voltage when my valve is opening?
  2. How can I best protect my AC/DC converter or its output from being affected by the AC pump?

Problem

My PLC is getting voltage spikes in the onboard ADC readings when I turn on actuated components elsewhere in my electrical system. I need to protect my PLC from these spikes because they cause errors in my data and can lead to bad logic from the program in my PLC.

More Information

I am watering my yard with a pump and water from a rain barrel. I have an ESP32 breakout board connected to an AC relay, a water level variable resistance sensor, and a DC valve. When my AC relay toggles my pump I get spikes in my ADC readings that can last over a few seconds and the same happens for my valve but these can last for around 5 to 8 seconds.

The ESP32 is powered by 5V from a 5V/12V AC to DC converter with the water level sensor and valve connected to the 12V output, the valve is switched with a MOSFET controlled by the ESP32. My AC pump is connected to the same AC power source as my AC/DC converter.

Question

  1. How can I best protect my ADC readings from prolonged changes in voltage when my valve is opening?
  2. How can I best protect my AC/DC converter or its output from being affected by the AC pump?

Attached is a wiring diagram Wiring Diagram

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JRE
JRE
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How do I best protect a PLC and Power Suppliespower supplies from voltage and current spikes coming from actuated components?

Problem

My PLC is getting voltage spikes in the onboard ADC readings when I am turning turn on actuated components elsewhere in my electrical system. I need to protect my PLC from these spikes because they cause errors in my data and can lead to bad logic from the program in my PLC.

More Information

I have an ESP32 breakout board connected to an AC relay, a water level variable resistance sensor, and a DC valve. When my AC relay toggles my pump I get spikes in my ADC readings that can last over a few seconds and the same happens for my Valvevalve but these can last for around 5 to 8 seconds.

The ESP32 is powered by 5V from a 5v5V/12V AC to DC converter with the water level sensor and valve connected to the 12V output, the valve is switched with a mosfetMOSFET controlled by the ESP32. My AC pump is connected to the same AC power source as my AC/DC converter.

Question

  1. How can I best protect my ADC readings from prolonged changes in voltage when my valve is opening?
  2. How can I best protect my AC/DC converter or its output from being effectedaffected by the AC pump?

How do I best protect a PLC and Power Supplies from voltage and current spikes coming from actuated components?

Problem

My PLC is getting voltage spikes in the onboard ADC readings when I am turning on actuated components elsewhere in my electrical system. I need to protect my PLC from these spikes because they cause errors in my data and can lead to bad logic from the program in my PLC.

More Information

I have an ESP32 breakout board connected to an AC relay, a water level variable resistance sensor, and a DC valve. When my AC relay toggles my pump I get spikes in my ADC readings that can last over a few seconds and the same happens for my Valve but these can last for around 5 to 8 seconds.

The ESP32 is powered by 5V from a 5v/12V AC to DC converter with the water level sensor and valve connected to the 12V output, the valve is switched with a mosfet controlled by the ESP32. My AC pump is connected to the same AC power source as my AC/DC converter.

Question

  1. How can I best protect my ADC readings from prolonged changes in voltage when my valve is opening?
  2. How can I best protect my AC/DC converter or its output from being effected by the AC pump?

How do I best protect a PLC and power supplies from voltage and current spikes coming from actuated components?

Problem

My PLC is getting voltage spikes in the onboard ADC readings when I turn on actuated components elsewhere in my electrical system. I need to protect my PLC from these spikes because they cause errors in my data and can lead to bad logic from the program in my PLC.

More Information

I have an ESP32 breakout board connected to an AC relay, a water level variable resistance sensor, and a DC valve. When my AC relay toggles my pump I get spikes in my ADC readings that can last over a few seconds and the same happens for my valve but these can last for around 5 to 8 seconds.

The ESP32 is powered by 5V from a 5V/12V AC to DC converter with the water level sensor and valve connected to the 12V output, the valve is switched with a MOSFET controlled by the ESP32. My AC pump is connected to the same AC power source as my AC/DC converter.

Question

  1. How can I best protect my ADC readings from prolonged changes in voltage when my valve is opening?
  2. How can I best protect my AC/DC converter or its output from being affected by the AC pump?
Source Link
Jman
Jman
  • 53
  • 4

How do I best protect a PLC and Power Supplies from voltage and current spikes coming from actuated components?

Problem

My PLC is getting voltage spikes in the onboard ADC readings when I am turning on actuated components elsewhere in my electrical system. I need to protect my PLC from these spikes because they cause errors in my data and can lead to bad logic from the program in my PLC.

More Information

I have an ESP32 breakout board connected to an AC relay, a water level variable resistance sensor, and a DC valve. When my AC relay toggles my pump I get spikes in my ADC readings that can last over a few seconds and the same happens for my Valve but these can last for around 5 to 8 seconds.

The ESP32 is powered by 5V from a 5v/12V AC to DC converter with the water level sensor and valve connected to the 12V output, the valve is switched with a mosfet controlled by the ESP32. My AC pump is connected to the same AC power source as my AC/DC converter.

Question

  1. How can I best protect my ADC readings from prolonged changes in voltage when my valve is opening?
  2. How can I best protect my AC/DC converter or its output from being effected by the AC pump?