描述
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。因此，PLC生产厂家都致力于研制、发展用于检测外部故障的专用智能模块，进一步提高系统的可靠性。
Baldor TSD-050-05-1-U 1-Axis Servo Drive (UEX)
Allen Bradley 1394-AM07 Series B AC Servo Drive (UGC)
Boston 35N594916A AC Motor 230/460V/1725RPM FACTORY NEW
Delco EG3404CI AC Motor 5HP/460V/1175RPM -FACTORY NEW-
ABB 3HNE00025 I/O Module Rev 4 DSQC-350 (UVG)
Allen Bradley M003349477 Control Board, Rev 1 (UEX)
Data Instruments 3LC12-3WS Detector 3 #9676002 (UVG)
Modicon 120-070-100 Resolver Cable A1 (100′ Lg) (NNOP)
Lincoln AVACCN4P1.5U64L AC Motor 1.5HP/460V *NEW*
Reliance P56X5007M-FB AC Motor .5HP/230-460V *REFURB*
