Boiler gas burner management system automation using PLC

This paper presents an operation and control system for gas burner management of steam boiler and discuss about the system structure and implementation of smooth automatic operation using programmable logic controller (PLC). All criteria for safe starting of a burner are taken into account in the PLC program with self protection and operation. The presented control system is simulated and tested on SIMATIC S7-200 Controller with SIMATIC STEP 7-Micro/WIN programming software presents the feasibility of real time system deployment. Such systems are of frequent interest over analog and relay based old control systems provide less complexity in troubleshooting, commissioning and controlling as well as ease of expansion or communication with other discrete control modules.