HomeAuthorsPosts by Sundareswaran Iyalunaidu

Sundareswaran Iyalunaidu

With over 24 years of dedicated experience, I am a seasoned professional specializing in the commissioning, maintenance, and installation of Electrical, Instrumentation and Control systems. My expertise extends across a spectrum of industries, including Power stations, Oil and Gas, Aluminium, Utilities, Steel and Continuous process industries. Tweet me @sundareshinfohe
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Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure Switch Operating PrinciplePressure Switch Hysteresis. Set Point and Reset PointNormally Open and Normally Closed Pressure Switch ContactsHydraulic Pressure Switch vs Pressure TransmitterCommon Hydraulic Pressure Switch Problems and SymptomsPressure Switch Not...
Instrumentation Questions

Advanced PLC Interlock Troubleshooting Quiz for Process Industries | 25 Practical PLC Diagnostics Questions for Instrumentation and Automation Engineers

Why PLC Interlock Troubleshooting Matters in Modern Process Industries  Modern process industries depend on reliable PLC interlock systems to protect personnel, equipment, and production. Troubleshooting PLC interlocks requires strong knowledge of process control, field instrumentation, PLC diagnostics, permissive logic, shutdown sequences, and industrial automation practices....
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Temperature Measurement

Troubleshooting Procedure Thermocouple Reading Wrong Temperature After Replacement

Table of ContentsWhy Is My Thermocouple Reading Wrong Temperature After Replacement?Common Causes of Wrong...
Temperature Measurement

Common Reasons for RTD Failures and How to Prevent Them

Table of ContentsIntroduction to Common Reasons for RTD FailuresWhat Is an RTD and How...
Instrumentation Questions

Advanced PID Tuning Quiz for Process Industries: Test Your Industrial Process Control Expertise

Why Take This Advanced PID Tuning Quiz? Effective PID tuning is essential for achieving stable,...
Instrumentation Calculators

Instrument Air Header Pressure Drop Calculator for EPC Instrumentation Design

Instrument Air Header Pressure Drop Calculator | AutomationForum.co :root{ --navy:#0a2540; ...
Control Valve

Why Control Valve Hunts in AUTO but Runs Smoothly in MANUAL

Table of ContentsIntroduction to Control Valve Hunting in AUTO ModeWhy This Problem Is Common...
Communication

Understanding the Four Types of Registers in Modbus Protocol

Table of ContentsWhy Understanding the Four Types of Registers in Modbus Protocol Is Important What...
Control Valve

What Are the Most Common Failure Modes of Control Valves?

Table of ContentsIntroduction: Why Are Control Valves Critical in Industrial Process Control?Why Is Control...
Instrumentation Questions

Instrument Loop Diagram Preparation Quiz for EPC Engineering

Test Your Instrument Loop Diagram Knowledge with Real EPC Engineering Scenarios Challenge your expertise with...
Instrumentation Calculators

Intrinsic Safety Entity Parameter Calculator for Reliable Hazardous Area Loop Design

Intrinsic Safety Entity Parameter Calculator | AutomationForum.co :root{ --navy:#0f2a4a; ...
Communication

HART Communicator Unable to Detect Instrument: Complete Troubleshooting Guide (No Device Found Error)

Table of ContentsWhy Is My HART Communicator Unable to Detect the Instrument?What Does "No...
SIS/ESD

Process Safety vs Functional Safety: Key Differences, SIS, SIF, SIL & IEC 61511 Guide

Table of ContentsIntroduction to Process Safety vs Functional SafetyWhy Many Engineers Confuse Process Safety...
Cybersecurity

Top Cybersecurity Threat Identification Methods Every Security Professional Should Know

Table of ContentsUnderstanding Cybersecurity Threat IdentificationWhat is Cybersecurity Threat Identification?Cybersecurity Threat Identification LifecycleTop Cybersecurity...
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Procedures

Hydraulic System Pressure Switch Troubleshooting: Step by Step Safe Procedure

Table of ContentsWhat Is a Hydraulic Pressure Switch and How Does It Work?Hydraulic Pressure...
Instrumentation Questions

Advanced PLC Interlock Troubleshooting Quiz for Process Industries | 25 Practical PLC Diagnostics Questions for Instrumentation and Automation Engineers

Why PLC Interlock Troubleshooting Matters in Modern Process Industries  Modern process industries depend on reliable...
Instrumentation Calculators

Capacitance Level Sensor Calculator: Calculate Liquid Level and Capacitance for Instrumentation Applications

Capacitance Level Sensor Calculator :root{ --bg:#F2F5F3; --panel:#FFFFFF; ...
SIS/ESD

How are ESD Signals Selected? Complete ESD Signal Selection Guide

Table of ContentsWhat Is an ESD Signal in an Emergency Shutdown System?Why Is ESD...