GE Multilin UR8HH可控硅模块
运行EnerVista PQM设置的PC可以更改系统设置点和监控值、状态和警报。通过立即发现由于故障或增长变化而导致的潜在问题，持续监控可将流程停机时间降至最低。PQM还包括一个前端RS232端口，可用于执行以下任务：•数据监控•问题诊断•查看事件记录•趋势分析•打印设置和/或实际值•将新固件加载到PQM闪存中用于在PQM中存储固件。这允许将来的产品升级通过串行端口加载。图1–4：通过串行端口PQM单元下载产品增强功能最初可以用作独立仪表。他们的开放式架构允许在同一通信链路上连接到其他Modbus兼容设备。这些可以集成在整个工厂范围的系统中，用于整体过程监测和控制。c）传感器选项提供四个隔离的4至20 mA（或0至1 mA，取决于安装的选项）模拟输出，可替换多达八个传感器。输出可分配给任何测量参数，以便直接与PLC接口A PC running EnerVista PQM Setup can change system setpoints and monitor values, status, and alarms. Continuous monitoring minimizes process downtime by immediately identifying potential problems due to faults or changes from growth. The PQM also includes a front RS232 port which may be employed to perform such tasks as: • data monitoring • problem diagnosis • viewing event records • trending • printing settings and/or actual values • loading new firmware into the PQM Flash memory is used to store firmware within the PQM. This allows future product upgrades to be loaded via the serial port. FIGURE 1–4: Downloading Product Enhancements via the Serial Port PQM units can initially be used as standalone meters. Their open architecture allows connection to other Modbus compatible devices on the same communication link. These can be integrated in a complete plant-wide system for overall process monitoring and control.c) Transducer Option Four isolated 4 to 20 mA (or 0 to 1 mA depending on the installed option) analog outputs are provided that can replace up to eight transducers. The outputs can be assigned to any measured parameters for direct interface to a PLC
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