摘要
在电动钻机的应用中,对容错和高度可靠性的要求越来越高,电动钻机由于故障引起的停机将会带来重大的经济损失。国家"十一五"计划重点项目ZJ120DB钻机采用西门子公司的高可靠性S7-400H容错(冗余)PLC,西门子S7-400H系统是一种专业的基于硬件的双机热备冗余系统,采用事件同步机制,具有同步速度快、切换时间短、同步距离远等优点,可以明显地减少生产停机的可能性,满足高度可靠性的要求。
In electric rig application, to permit mistake and is more and more high with the dependable request in high degree, the electric rig because of breaking down and causing of shut down to will bring the important economy loss. The national ＂11＂ plans item ZJ120DB rig use S7-400H of the machine adoption Siemens company permit the mistake（redundancy） PLC, the system of Siemens S7-400H is a kind of professional according to a machine heat of the hardware has the redundancy system, synchronous mechanism in adoption affairs, have the synchronous speed quick, cut over time short, synchronous far etc. in distance advantage, can reduce the possibility that production shut down clearly, satisfy the dependable request in high degree.
出处
《变频器世界》
2008年第11期87-90,共4页
The World of Inverters
