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。
Expedited shipping available
Reliance Electric DC Motor 20HP 690/2070 RPM Ser 1LT214
RELIANCE 20FR4042 FLEXPAK 3000 DRIVE ***NNB***
Reliance Electric 57430-1C/574301C/57430/0-57430-1C NEW
One-day shipping available
RELIANCE ELECTRIC 0-54121-RV USPP 054121RV
RELIANCE ELECTRIC 45C-312 NSPP 45C312
RELIANCE ELECTRIC 0-51865-18 NSFP 05186518
RELIANCE ELECTRIC 61C-345-A NSFP 61C345A
RELIANCE ELECTRIC 9101-0378 USPP 91010378
RELIANCE ELECTRIC DM-150 USPP DM150
RELIANCE ELECTRIC 0-54339-14 USPP 05433914
Reliance Electric Automate 15, 45C15C, New IN BOX
Reliance Electric Automate 15, 45C15D, New IN BOX
RELIANCE ELECTRIC 0-52859-2 DRIVE BOARD 0528592 NIB
Expedited shipping available
