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。
Moog Controller Model 155-002
Actus Servo Motor Type NA20-10F-035 Used
Bosch Amplifier Card 0 811 405 097 -PV60- Rebuilt
Fanuc Servo Motor A06B-0126-B008 #7000 Used
Whedco Servo Motor MTR-35005602 Used
Moog 303-030A Servo Motor 11,000 RPM Used – Warranty
Reliance Servo Motor Model 1326AB-B410G-21-K4 Used
Rexroth Amplifier Card Model VT-2000K43/2 Rebuilt
NEW Bosch Proportional Valve 9810-231-481 13 Mo Warr.
Sanyo Denki Servo Motor Model 65BM040HBRSA
