5、fan controlsystembasedonPLCAbstractInrecentyears, China's fan varietiesof variousvarietiesof fan emergeinanendlessstream alsohas thedifferentfeatures ofthe controlmode. About ourtraditional fan type,will maintain fullpowerandoperation stateof ventilationsystem inmostcases, andbe
6、causethecontrolmodeof themaincontrolsystem is therelaycontrol, sothesystem cannotbemonitored andunstable, itwill have toconsumealotofenergy, becauseofthesedefects,wemust to improve thecurrent fan controlsystem. Therefore, intheworld of designandResearchoncontrolsystemof ventilat
7、ion machine is basedonthePLCcontrol, thegoal istorealize the automationandmechanization ofcoalminework, soasto save energy, isomersafeandreliable ventilationsystem. Thissystembasedonthe ventilationenvironmentinCoalMine Basedon creating model, themaincontrolobjectisa truefan, the