HOW TO WIRE PID FOR SINGLE OR MULTIPLE HEATING ELEMENTS | RE-EDITED & UPDATED

Summary

This instructional video offers a necessary adjustment and solution for wiring a PID controller with dual or multiple heating elements. The presenter, who has successfully built and tested their own DIY oven with a PID controller, guides viewers through the wiring process, from connecting the power source and heating elements to the PID, through to the thermocouple and alarm bell setup. The video simplifies the process, emphasizing the use of solid-state relays and switches for control, and highlights the importance of using appropriate power supplies and high-temperature materials for safety and efficiency.

Takeaways

• 🔧 The video is an adjustment and clarification to a previous tutorial on wiring a PID controller and addresses installation of dual or multiple heating elements.
• 🛠️ The presenter is not an expert but has successfully built, tested, and run a DIY oven with a PID controller, sharing their research and experience.
• 🔌 The setup includes a PID controller, two heating elements, two solid-state relays, two switches, a thermocouple, a high-capacity plug, a circuit breaker, and an alarm bell.
• ⚡ The wiring process begins with connecting the power source to an automatic circuit breaker suitable for the heating element's amperage draw.
• 🔄 The PID controller can operate with a wide range of voltages and is connected to the power source assuming alternating current without polarity.
• 🔥 The heating element is powered through a solid-state relay, which is controlled by the PID to turn the heating on and off based on temperature readings.
• 📊 The PID controller uses specific pins to connect with the solid-state relay and manually with a switch for additional control.
• 🌡️ A thermocouple is wired to the PID to measure and control the temperature within the oven.
• 🚨 An alarm bell is connected to the PID for alerts, using pins that act as a switch to activate the bell.
• 🔌 For dual or multiple heating elements, a parallel circuit is created, with each element controlled by its own solid-state relay and switch.
• ⚙️ The presenter emphasizes the importance of using appropriate power supplies, circuit breakers, and electric cables for safety and efficiency, especially when dealing with high amperage draws.

Q & A

What is the purpose of the video?

The purpose of the video is to provide an adjustment to the previous video on wiring a PID controller and to address questions regarding the installation of dual or multiple heating elements in a DIY project.

Who is the intended audience for this video?

The intended audience is individuals working on DIY projects who need guidance on wiring a PID controller and potentially using dual or multiple heating elements.

What is a PID controller and why is it used in this context?

A PID controller is a device used in control systems to manage the temperature or other process variables by calculating an error value and applying a correction based on proportional, integral, and derivative terms. It is used here to regulate the temperature of a heating element or elements.

What are the components mentioned in the script for setting up the PID controller with a heating element?

The components mentioned include a PID controller, a heating element, a solid-state relay, a switch, a thermocouple, a high-capacity plug, an automatic circuit breaker switch, and an alarm bell.

How does the video suggest connecting the power source to the PID controller?

The video suggests running the power lines through a 20-amp automatic circuit breaker and then wiring the lines to pins 8 and 9 on the PID controller, assuming the blue line is negative and the orange line is positive.

What is the role of the solid-state relay in this setup?

The solid-state relay acts as an electronically controlled switch that is turned on and off by the PID controller to control the heating element based on the temperature readings from the thermocouple.

How is the thermocouple connected to the PID controller?

The thermocouple is connected to the PID controller by wiring its positive and negative electrodes to pins 5 and 6 on the PID, which have positive and negative signs next to them.

What is the function of the alarm bell in this setup?

The alarm bell is wired to the PID controller to provide an audible alert in case of an issue, such as when the temperature goes beyond the set range.

How does the video describe the process of wiring dual heating elements?

The video describes wiring dual heating elements by creating a parallel circuit, where each heating element is connected through its own solid-state relay and switch, similar to the process for a single element.

What safety considerations are mentioned in the video regarding the power supply and wiring?

The video mentions ensuring a suitable power supply, circuit breaker, and electric cables that can handle the total current drawn by the heating elements, which can be quite high. It also recommends using ceramic terminal blocks or high-temperature ceramic connectors and high-temperature insulated fiberglass wire for connections.

What additional resources does the video creator provide for viewers seeking more information?

The video creator provides more details in the video description and encourages viewers to check out other videos on how they built their DIY oven with the PID controller.