Category Archives: Automation Industry

SMC Soft Starter Fault Codes: Complete Troubleshooting Guide for SMC-3 SMC-Flex and SMC-50

AB 150 Software Starter

SMC soft starters are widely used in industrial motor control applications to reduce starting current, mechanical shock, and voltage drop during motor acceleration. However, like any electronic motor controller, an SMC soft starter can display fault conditions caused by power supply problems, motor issues, incorrect parameter settings, SCR failures, bypass problems, overheating, or communication faults. […]

Mitsubishi FR-D700 Inverter Parameter Setting & Troubleshooting Guide

Mitsubishi VFD

Mitsubishi FR-D700 series inverters are widely used in small automation equipment, conveyor belts, fans and pumps, which are favored by automation engineers for compact size, stable performance and easy parameter configuration. Today we are going to share the step-by-step parameter operation guide for FR-D700 frequency converter, including factory reset operation and common parameter writing error […]

PLC Delay‑on‑Start and Delay‑on‑Stop Programming Guide

PLC

Introduction For many beginners learning PLC programming, timers represent one of the first major hurdles to overcome. Delay‑on‑Start and Delay‑on‑Stop are two of the most fundamental and frequently‑used control logics in industrial automation. A wide variety of real‑world equipment relies on these functions, including blowers, water pumps, conveyor belts and many other types of machinery. […]

What Is a Rising Edge in PLC Programming? Why Do PLC Buttons Use Rising Edge Detection?

What Is a Rising Edge in PLC Programming

If you are new to PLC programming, you may have encountered terms such as Rising Edge, Positive Edge, One-Shot, or Pulse Detection. At first glance, they may seem complicated. Why can’t a PLC simply detect whether a button is ON or OFF? Why do many PLC programs need a special rising-edge instruction when a push […]

Why Brushed Motors Fail in Continuous Operation? Understanding the Difference Between Brushed and Brushless Motors

Why Brushed Motors Fail in Continuous Operation

A New Motor Failed After Only Three Days — Was It a Quality Problem? In an industrial workshop, a newly installed motor suddenly stopped working after only three days of operation. The equipment owner was frustrated. The motor was brand new, purchased with a significant investment, and expected to support long-term production. After inspection, technicians […]

VFD Motor Rotation Direction Reversed? Check Wiring Before Changing Parameters

VFD Motor Rotation Direction Reversed

Complete Troubleshooting Guide for Siemens SINAMICS and AB PowerFlex Drives In industrial automation systems, variable frequency drives (VFDs) are widely used to control motor speed, torque, acceleration and deceleration. However, one of the most common problems encountered by maintenance engineers is: “The motor starts normally, but it rotates in the opposite direction.” When this happens, […]

Pro face HMI Panel Fault Codes

PFXGP4301TADW

Human Machine Interfaces (HMIs) have become an essential part of modern industrial automation. Among the world’s leading HMI manufacturers, Pro-face is widely recognized for its reliability, intuitive operation, and seamless integration with PLCs from Siemens, Mitsubishi, Allen-Bradley, Omron, Schneider Electric, Beckhoff, and many other automation brands. Despite their excellent reliability, Pro-face HMI panels may occasionally […]

Why Does an Electric Motor Draw High Starting Current? Why Does the Current Decrease After Startup?

VFD

Electric motors are the heart of modern industrial automation. They are widely used in conveyors, pumps, compressors, fans, CNC machines, packaging equipment, and countless manufacturing systems. One question that frequently arises among engineers, technicians, and maintenance personnel is: Why is the motor starting current so high, and why does it gradually decrease once the motor […]

Siemens Product Classification and Model Number Guide

Siemens Product Classification and Model Number Guide

Siemens offers a wide range of industrial automation products, including PLCs, HMIs, servo systems, variable frequency drives, industrial communication equipment, and power supplies. For engineers and purchasing managers, understanding the Siemens product family structure can simplify product selection and maintenance. This guide provides an overview of the major Siemens product categories and explains the most […]

Mitsubishi FX3U PLC Error Codes: Complete Troubleshooting Guide and Diagnostic Reference

Introduction The Mitsubishi FX3U series PLC is one of the most widely used compact programmable logic controllers in industrial automation. It is commonly deployed in packaging machinery, food processing equipment, conveyor systems, textile machines, water treatment plants, and factory automation applications. Although the FX3U PLC is highly reliable, users may occasionally encounter CPU faults, communication […]