A Study Of PLC Control For Huge Capacity Marine Boiler

The control of marine boiler system on board ship,especially on board turbo ship or on board oil tanker,is always a important question for discussion of maine engineering technology and automatization technology.The reason is that the control count for much with efficiency,security and reliability of boiler.The old control system mainly using -and-now can't meet the high and complicated requirements of modern ship to control its boiler.It is imperative under the situation to use computer for ship control area.And the remarkable PLC used currently by industry process control area is the most reliable,simple and convention way to realize computer control on board modern ship.The paper introduce simply the basic principle of PLC and the characteristic of SIMENS PLC S5-115u and a typical boiler system of huge oil tank.On this base,the paper pay more attention to making control programme of S5-115u for huge marine fuel oil boiler.And PID control method is singly adopted for water level control and steam pressure control of the fuel oil boiler. In order to comminucate to other parts,SINEC LI LAN (Siemans Network Communication Low Range 1) is selected to build a Ian.