描述
各种电动阀、电磁阀该开的没能打开，该关的没能关到位，由于执行机构没能按PLC的控制要求动作，使系统无法正常工作，降低了系统可靠性。要提高整个控制系统的可靠性，必须提高输入信号的可靠性和执行机构动作的准确性，否则PLC应能及时发现问题，用声光等报警办法提示给操作人员，尽快排除故障，让系统安全、可靠、正确地工作。
Pacific Scientific R43SSNA-HS-NS-NV-02 Servo Motor NOS
Moog Servo Proportional Valve 641A212B Rebuilt
Rexroth DREE20-52/315YG24K31M Valve Pressure Reducing
New Star 454-0005 Servo Valve 1 Year Warranty NOS
NEW! Star Servo Valve 454-0006 w/13 Month Warranty NR!
NEW! Dyval/Dynamic Servo Valve #5 w/13 Month Warranty
Indramat Servo Mtr MAC112D-0-ED-4-C-13-A-D-WI520LV-S005
PowerTec Servo Motor F147G3A0N907010 Used
Donzelli 14001 Hydraulic Motor Rebuilt w/6 Month Warr.
Pacific Scientific Servo Motor R63GENP-R2-NS-NV-00 Used
Indramat Servo Motor~MKD090B-047-GG0-KN~Rebuilt
Parvex Servo Motor Model MC17HA8225 New in Box
