Tag: how to

If you are confused by terms like ground loop, common mode interference, or different signal types such as 4-20mA and 0-10V, you are not alone.

For example, in a factory with variable frequency drives (VFDs), electrical noise can easily distort sensor signals and cause unstable readings. In chemical plants or oil facilities, improper grounding can even damage PLC input modules due to ground loops.

That’s where signal isolators become essential—they stabilize signals, protect equipment, and ensure accurate data transmission.

ATO.com explains in detail the methods and procedures for calibrating dew point sensors, including two-point calibration, single-point calibration, chilled mirror method, field calibration, and error adjustment techniques, to improve measurement accuracy for industrial and compressed air systems.

A float switch is an automatic liquid level control device used to start or stop pumps based on liquid level changes in tanks or industrial systems.In chemical tanks, float switch failure is a serious issue that can lead to overflow, dry-run pump damage, or production shutdown.The most common causes of failure are chemical corrosion, electrical overload, and buoyancy instability.In harsh environments, standard float switches often fail due to cable hardening, material degradation, or chemical attack. This guide explains how to diagnose these issues and choose a reliable industrial-grade float switch.

A current transformer (CT) is a fundamental device used in power systems and industrial automation for measurement, protection, and control. CT polarity defines the directional relationship between the primary and secondary currents. If the polarity is incorrect, it can lead to reversed measurements, inaccurate fault current calculations, and even malfunction of protection systems such as relay misoperation or failure to trip. Because of this, verifying CT polarity is a critical step during installation and commissioning. In the following sections, we will introduce two reliable methods to test CT polarity: a simple DC method for quick field verification and a professional tester approach for more accurate and efficient testing.

Positioning control technology is an indispensable tool in the development of high-tech products. As a vital part of modern technology, it drives advancements in fields such as automated manufacturing, computing, and materials processing. This article will show you how to use a PLC and a servo drive to build a complete pulse-based servo motor position control system in position control mode, a classic industrial solution widely used in both professional automation and high-precision DIY & home automation projects.

A constant-pressure water supply system is essential for applications where stable water pressure directly affects performance and reliability. In traditional pump systems, fixed-speed motors or manual valve adjustments often lead to pressure fluctuations, higher energy consumption, and increased mechanical wear. By using the GK3000 upgraded Variable Frequency Drive with built-in PID control, a fully automated pump control solution can be implemented. Combined with a pressure sensor, the system automatically regulates pump speed to maintain stable water pressure under varying load conditions. This article provides a complete guide to the system architecture, wiring method, parameter configuration, and commissioning process for a GK3000-based constant-pressure water supply system.

Accurate and stable temperature control is essential in industrial heating systems, laboratory equipment, and automation applications. PID temperature controllers are widely used due to their precision, reliability, and ability to maintain stable temperatures automatically. In this article, we demonstrate how to build an automatic heating control system using a PID temperature controller, focusing on wiring logic, terminal functions, and system operation. The example shown is a three-phase heating control circuit with built-in safety and alarm functions.

In industrial automation applications, pick-and-place is one of the most common and fundamental motion control scenarios. Many users perceive robotic arm systems as complex and high-cost, but in reality, a structured, logically complete 2-axis robotic arm control system can be quickly built using PLCs, HMIs, and stepper motors. Taking a simulated 2-axis robotic arm project controlled by a PLC + HMI with dual stepper motors as an example, this article will detail the system architecture, wiring methods, driver configurations, PLC & HMI programming concepts, as well as the full operation and emergency stop logic. It aims to help you quickly understand and get started with similar applications.

This guide explains how to build a constant-pressure pumping system using the upgraded GK3000 Variable Frequency Drive (VFD) from ATO. The system adjusts pump motor speed based on real-time pressure feedback to maintain stable output pressure while improving energy efficiency and reducing mechanical wear.

Star-delta starters are widely used in industrial motor control systems to optimize the startup performance of high-power three-phase induction motors. By controlling the motor’s connection mode during startup and normal operation, they effectively reduce inrush current and mechanical stress, ensuring smoother acceleration and more stable system operation.

A weighing indicator is the central control unit of any weighing system. It receives the low-voltage signals generated by the load cell, amplifies and processes them, and converts them into clear, stable weight readings on the display. Whether used in a laboratory balance, an industrial platform scale, or a weighbridge system, the weighing scale indicator’s accuracy directly affects the reliability of every measurement.

In this quick tutorial, you'll learn how to create a simple yet FAIL-SAFE PLC program for water level control with tuning fork sensors and solenoid valves. Let's get started!

In today’s world, where almost every device relies on electricity, having access to clean and reliable power is more important than ever. While modified sine wave inverters may be enough for basic applications, they often fall short when it comes to powering sensitive electronics such as medical equipment, laptops, or communication systems. This is where a pure sine wave inverter stands out.

For electronics enthusiasts, successfully building a DC-DC converter is a deeply rewarding experience. It not only provides a deep understanding of the core principles of switching power supplies but also provides a stable power source for future projects. This article will guide you through the construction of a basic non-isolated step-down (Buck) converter.

A tutorial guide on how to build an automatic forward and reverse control system for a stepper motor. This system can improve automation, enable complex control and system integration, create complex motion trajectories, implement closed-loop error correction, and provide precise positioning.

Single-phase motors are widely applied in household appliances, workshop equipment, and light industrial machinery because of their straightforward design and dependable performance.  Among these, the dual capacitor motor stands out as one of the most commonly used.  This guide will explain its wiring procedure, operating principle, and methods for forward and reverse control.

Hydropower is a clean, renewable energy source, and while large hydroelectric plants require massive infrastructure, you can actually make a DIY water turbine at home with simple tools and recycled materials. This type of homemade hydropower generator is perfect for students, hobbyists, or anyone who wants to learn how renewable energy works in practice. In this guide, we’ll show you step by step how to build a small water turbine at home.

In this blog, we'll guide you step by step on how to build and configure a BLDC motor control circuit for multi-speed and direction control using RS485 communication and two self-holding buttons.

Intelligent LED dimming technology is reshaping the future of lighting control, offering unprecedented flexibility, significant energy savings, and the ability to create a more comfortable ambient lighting environment. However, it is important to recognize that not all dimming technologies are the same—they differ fundamentally in their principles and performance.