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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PLC

PLC Alarm and Trip Documentation Procedure – EPC PLC Automation Engineer Guide

Table of ContentsPLC Alarm and Trip Documentation Purpose and Objectives of the ProcedureScope and Explicit...
PLC

Resolution in PLCs – The Complete Guide for Automation & Instrumentation Engineers

Table of ContentsWhy Resolution in PLCs Matters in Industrial AutomationWhat Is Resolution in PLCs?...
Instrumentation Calculators

Valve Actuator Sizing Calculator – Complete Engineering Guide for Torque, Safety Factor & Gear Ratio Selection

Valve Actuator...
Engineering Standards

IEC 61511 Safety Bypass And Override in Instrumentation and Control System Maintenance

Table of ContentsIEC 61511 Safety Bypass and OverrideUnderstanding Safety Bypass And Override In A...
Instrumentation Questions

PLC Programming Basics Quiz for Automation Engineers – Process Industries

Why Automation Engineers in Process Industries Should Master PLC Programming Basics This short, advanced quiz...
PLC

PLC Data Types Every Automation Engineer Must Know to Avoid Costly Programming Errors

Table of ContentsWhy PLC Data Types Matter in Real-World AutomationCommon PLC Programming Problems Caused...
SAT Activities

Control Valve Site Acceptance Test (SAT) Procedure – Step-by-Step Field Guide

Table of ContentsWhy a Thorough Control Valve  SAT MattersSAT Purpose and ScopePreparatory Activities -...
Instrumentation Calculators

Advanced Venturi Tube Flow Calculator – Formula, Working & Applications

Advanced Venturi...
Instrumentation Questions

Control Valve Hunting Troubleshooting – Advanced MCQ Quiz

What Is Control Valve Hunting? Control valve hunting is a common and expensive problem in...
Control Valve

ESDV vs EBDV – Fail Close vs Fail Open | Emergency Shutdown Valve vs Emergency Blowdown Valve

Table of ContentsEmergency Valves in Process Safety SystemsWhat is an ESDV (Emergency Shutdown Valve)?What...
PLC

PLC Permissive Logic Troubleshooting Procedure for Instrumentation Engineers

Table of ContentsWhy PLC Permissive Logic is Critical in Process PlantsWhat is PLC Permissive...
Engineering

JB Grouping in Industrial Automation and Instrumentation – Complete Practical Guide for EPC, Site and Commissioning Engineers

Table of ContentsJB Grouping in Process Industry Instrumentation SystemsWhat Is JB Grouping in Instrumentation...
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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...