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By Industrial Control Academy
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Get instant insights and key takeaways from this YouTube video by Industrial Control Academy.
Core Concepts of PID Control
š PID controllers are the industrial standard for process control, used to maintain temperature, pressure, flow, or level automatically without constant human oversight.
āļø Manual Mode requires operators to constantly monitor and adjust control elements (e.g., valve position) every few seconds to maintain stability against changing process variables.
š¤ Auto Mode uses a PID controller to process analog sensor inputs (e.g., 4-20 mA or 0-10V) and automatically adjust outputs to maintain a precise setpoint with minimal deviation.
Application Examples in Automation
š”ļø Temperature Control: Specialized temperature controllers use inputs from thermocouples or RTDs and use a solid-state relay (SSR) or magnetic contactor to cycle a heater on/off to match the setpoint.
š§ Level Control (Pneumatic Valve): A level sensor sends an analog signal to the PID, which commands a pneumatic control valve to open or close precisely, balancing the fluid flow into a tank.
āļø Level Control (Motor/VFD): The PID controller sends an analog signal to a Variable Frequency Drive (VFD), which adjusts the motor speed to control the inflow/outflow, maintaining the desired tank level autonomously.
Advanced Integration and Tuning
š» PLCs (Programmable Logic Controllers) can perform PID control using a built-in PID block, offering integrated control for more complex systems compared to standalone controllers.
š§ VFDs with Built-in PID: Modern VFDs can eliminate the need for an external PID controller by reading sensor inputs, executing the PID algorithm internally, and controlling motor speed directly.
š PID tuning involves balancing P (Proportional) for present error response, I (Integral) for correcting past steady-state errors (offset), and D (Derivative) for predicting future error to smooth the response and reduce overshoot.
Key Points & Insights
ā”ļø Manual operation requires continuous operator engagement to make adjustments every few seconds or minutes to maintain stability, whereas Auto mode ensures precise, stable control.
ā”ļø Wiring a temperature controller involves connecting power (AC 220V to terminals 8 & 9), sensor input (thermocouple to terminals 5 & 6), and output to the SSR (terminals 2 & 3).
ā”ļø For motor control, the PID adjusts the VFD output signal (4-20 mA or 0-10V) based on the Process Variable (PV) compared to the Set Value (SV) to regulate pump speed automatically.
ā”ļø Effective PID tuning requires careful adjustment of P, I, and D values; for example, too much 'I' makes the system sluggish, while too much 'D' introduces noise.
šø Video summarized with SummaryTube.com on Nov 20, 2025, 23:09 UTC
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Full video URL: youtube.com/watch?v=9vakquewxpc
Duration: 13:26
Get instant insights and key takeaways from this YouTube video by Industrial Control Academy.
Core Concepts of PID Control
š PID controllers are the industrial standard for process control, used to maintain temperature, pressure, flow, or level automatically without constant human oversight.
āļø Manual Mode requires operators to constantly monitor and adjust control elements (e.g., valve position) every few seconds to maintain stability against changing process variables.
š¤ Auto Mode uses a PID controller to process analog sensor inputs (e.g., 4-20 mA or 0-10V) and automatically adjust outputs to maintain a precise setpoint with minimal deviation.
Application Examples in Automation
š”ļø Temperature Control: Specialized temperature controllers use inputs from thermocouples or RTDs and use a solid-state relay (SSR) or magnetic contactor to cycle a heater on/off to match the setpoint.
š§ Level Control (Pneumatic Valve): A level sensor sends an analog signal to the PID, which commands a pneumatic control valve to open or close precisely, balancing the fluid flow into a tank.
āļø Level Control (Motor/VFD): The PID controller sends an analog signal to a Variable Frequency Drive (VFD), which adjusts the motor speed to control the inflow/outflow, maintaining the desired tank level autonomously.
Advanced Integration and Tuning
š» PLCs (Programmable Logic Controllers) can perform PID control using a built-in PID block, offering integrated control for more complex systems compared to standalone controllers.
š§ VFDs with Built-in PID: Modern VFDs can eliminate the need for an external PID controller by reading sensor inputs, executing the PID algorithm internally, and controlling motor speed directly.
š PID tuning involves balancing P (Proportional) for present error response, I (Integral) for correcting past steady-state errors (offset), and D (Derivative) for predicting future error to smooth the response and reduce overshoot.
Key Points & Insights
ā”ļø Manual operation requires continuous operator engagement to make adjustments every few seconds or minutes to maintain stability, whereas Auto mode ensures precise, stable control.
ā”ļø Wiring a temperature controller involves connecting power (AC 220V to terminals 8 & 9), sensor input (thermocouple to terminals 5 & 6), and output to the SSR (terminals 2 & 3).
ā”ļø For motor control, the PID adjusts the VFD output signal (4-20 mA or 0-10V) based on the Process Variable (PV) compared to the Set Value (SV) to regulate pump speed automatically.
ā”ļø Effective PID tuning requires careful adjustment of P, I, and D values; for example, too much 'I' makes the system sluggish, while too much 'D' introduces noise.
šø Video summarized with SummaryTube.com on Nov 20, 2025, 23:09 UTC
Find relevant products on Amazon related to this video
As an Amazon Associate, we earn from qualifying purchases

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