3BHB004692R001 ABB

Improving the reliability of PLC control system is a long-term and lasting work.First of all,construction and installation are very important links,which must be strictly checked,which can reduce the failure rate of production.Secondly,it is a top priority to ensure the quality of maintenance,especially the changes of technical lines and systems.Otherwise,after several years of system transformation,a large number of lines are replaced,line numbers are lost,and programs are changed,and the records are not backed up.As a result,the maintenance workload is increased,and the reliability cannot be guaranteed.This item is easily overlooked and must be paid great attention to

提高PLC控制系统可靠性是一项长期、持久的工作。首先，施工和安装是非常重要的环节，必须严格把关，这样可减少投产故障率。其次，要保证检修质量，特别是技改线路改动和系统改造，是目前的当务之急。否则，几年的系统改造后，大量线路的更换，线号丢失及程序变更，该记录备份的没有做记录等。致使维护工作量加大，可靠性得不到保证。这一项是人们极易疏忽的，必需引起高度重视