描述
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。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。
Reliance Automate Local I/O Head 61C22A
Expedited shipping available
Reliance Electric Ac Drive 200-230Volt 3Phase 5 Hp
Expedited shipping available
Reliance 10 HP P21G12 215T Motor (MOT2348)
RELIANCE ELECTRIC 0-48675 DV/DT NETWORK FIELD CARD
RELIANCE ELECTRIC 0-51831-6 CVTG CURRENT VOLTAGE CARD
Reliance Electric 8647511R Stack Rectifier 86475-11R
Reliance Electric Printed Circuit Extender Card
RELIANCE ELECTRIC 0-51849-1 0518491 051849 1 518491 1
RELIANCE ELECTRIC REEVES MOTOR DRIVE 5HP RATIO 70.6
RELIANCE ELECTRIC 107172-001V BOARD 107172001V 0-48652
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