RELANCE 0-57C411-2 电源电压:340-460伏
DCS 系统的日常维护 系统的日常维护是DCS系统稳定高效运行的基础，主要的维护工作有以下几点：
1） 完善DCS系统管理制度。
2） 保证空调设备稳定运行,保证室温变化小于±5℃/h ,避免由于温度、湿度急剧变化导致在系统设备上的凝露。
3） 尽量避免电磁场对系统的干扰,避免移动运行中的操作站、显示器等,避免拉动或碰伤设备连接电缆和通讯电缆等。
4） 注意防尘，现场与控制室合理隔离，并定时清扫，保持清洁，防止粉尘对元件运行及散热产生不良影响;
DCS 的维护可分为：
日常维护、预防性维护和故障维护，
日常维护和预防维护是在系统未发生故障所进行的维护。故障维护发生在故障产生之后,往往 已造成系统部分功能失灵并对生产造成不良影响;相反,预防性维护是在系统正常运行时,对系统进行有计划的定期维护,及时掌握系统运行状态、消除系统故障隐 患、保证系统长期稳定可靠地运行,形成定期维护的概念。实践证明,定期维护能够有效地防止DCS 突发故障的产生,形成可观的间接经济效益。
Daily Maintenance of DCS System The daily maintenance of the system is the foundation for the stable and efficient operation of the DCS system, and the main maintenance work includes the following points:
1) Improve the DCS system management system.
2) Ensure the stable operation of the air conditioning equipment, ensure that the temperature change is less than ± 5 ℃/h, and avoid condensation on the system equipment due to rapid changes in temperature and humidity.
3) Try to avoid interference from electromagnetic fields on the system, avoid moving operating stations, displays, etc. during operation, and avoid pulling or damaging equipment connection cables and communication cables.
4) Pay attention to dust prevention, properly isolate the site from the control room, and regularly clean and maintain cleanliness to prevent adverse effects of dust on component operation and heat dissipation;
Maintenance of DCS system
The maintenance of DCS can be divided into:
Daily maintenance, preventive maintenance, and fault maintenance,
Daily maintenance and preventive maintenance are maintenance carried out when the system has not malfunctioned. Fault maintenance occurs after a fault occurs, often resulting in partial system failure and adverse effects on production; On the contrary, preventive maintenance is a planned and regular maintenance of the system during normal operation, in order to timely grasp the operating status of the system, eliminate system failure hazards, ensure long-term stable and reliable operation of the system, and form the concept of regular maintenance. Practice has proven that regular maintenance can effectively prevent the occurrence of sudden DCS failures and generate considerable indirect economic benefits.
The backup of the system mainly requires two aspects of work:
1) Software backup: including operating system, drivers, emergency startup disk (especially for WinNT systems), control system software, Keycode disk (Centum authorized disk), control configuration database, and ensuring that control configuration data is up-to-date and complete. To address the issue of easy wear and tear on CDs and floppy disks in practical use, it is important to make backups and use backup forms such as portable hard drives, USB drives, and hard drives to ensure the preservation of various software.
2) Hardware backup: For vulnerable and short-lived components and critical components such as keyboards and mice, I/O modules, power supplies, communication cards, etc., appropriate backup should be made according to the actual situation.
2.5 Service data production includes the communication records of hardware manufacturers, system design units, and main system design personnel; Organize the scope and schedule of after-sales service for various products. If fully utilized, it can greatly save time and money. Only by doing the above tasks well can one fully play a role in system maintenance and solve problems.