Description
根据统计资料表明:在PLC控制系统的故障中,CPU占5%,I/O接口占15%,输入设备占45%,输出设备占30%,线路占5%。前二项共20%故障属于PLC的内部故障,它可通过PLC本身的软、硬件实现检测、处理;而其余80%的故障属于PLC的外部故障。
ROOTS ROTARY LOBE BLOWER 42 U-RAI NEW 42URAI
CLEVELAND BRUSHLESS DC SERVO MOTOR BLM4046-TOOT-122F
ALLEN BRADLEY AC SERVO MOTOR 1326AB-A3E-11-K4 NIB
ABB E31978 PURGING CONTROL BOARD E-31978