AS-W606-012现货 in stock! 欢迎来电咨询~！！

AS-W606-012,

AS-W606-012

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。
　　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;
　　5) 严禁使用非正版软件和安装与系统无关软件。
　　6) 做好控制子目录文件的备份,各自控回路的PID 参数、调节器正反作用等系统数据记录工作。
　　7) 检查控制主机、显示器、鼠标、键盘等硬件是否完好,实时监控工作是否正常。
　　8) 查看故障诊断画面,是否有故障提示。
　　预防维护
　　有计划地进行主动性、预防性维护,保证系统运行稳定可靠。根据大修周期，利用大修进行一次预防性的维护，以掌握系统运行状态,消除故障隐患。大修期间对DCS 系统应进行彻底、全面的维护，内容包括：
　　1) 系统冗余测试: 对冗余电源、服务器、控制器、通讯网络进行冗余测试。操作站、控制站停电检修。包括计算机内部、控制站机笼、电源箱等部件的灰尘清理。
　　2) 系统供电线路检修。并对UPS进行供电能力测试和实施放电操作。
　　3) 接地系统检修。包括端子检查、对接地电阻测试。
　　大修后系统维护负责人应确认条件具备方可上电，并应严格遵照上电步骤进行。

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