¥ 价格面议
¥ 价格面议
¥ 价格面议
¥ 价格面议
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3.6.3 步骤:
①按照3.3除尘步骤对控制站硬件清灰除尘
②使用DCS软件工具和万用表等对故障点位进行诊断,判断故障类型,确定属于I/O卡件故障、端子板故障、连接排线故障还是通道故障
③准备好相应的配件
④戴好防静电手套
⑤更换损坏的元件
⑥上装组态数据
⑦观察更换元件运行情况,如没有问题,投用仪表回路。
3.7 系统UPS测试
3.7.1 目的:
系统UPS是防止突然断电而影响正常工作,给DCS系统造成损害的重要设备,为确定其使用效能,需定期对其进行测试。
3.7.2 步骤:
①稳态测试。UPS进入“系统正常”状态时对波形、频率、电压和效率的测试
②动态测试。突加或突减负载测试和转换特性测试
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