Woodward 8237-2596 安全系统模块
可配置的超速检测系统
是一种可配置的超速检测系统，旨在在感应到超速或过加速事件时安全关闭各种尺寸的蒸汽、燃气和水轮机。提供两个双冗余脱扣继电器输出，使用三选二投票架构，或三个独立的无投票脱扣继电器输出，带有单独的警报继电器、4–20 mA 速度读数和 Modbus 通信，使这款超速设备易于集成到任何涡轮机安全系统中。此 ProTech GII 型号是隔板安装、高压/低压、表决继电器、表决输入，具有用于蒸汽轮机保护的数学函数保护装置。
这种快速作用的超速保护装置设计用于与涡轮机控制或跳闸系统结合使用，以在涡轮机超速事件的情况下安全关闭涡轮机。可以通过 ProTech-GII 的冗余硬接线输入和输出信号或通过其三重冗余串行 Modbus 通信端口执行与相关控制系统或工厂 DCS（分布式控制系统）的接口。 在线测试每个 ProTech-GII 模块都可以从模块的前面板、Modbus 通信端口手动测试，或通过其自动测试例程功能自动测试。ProTech-GII 允许用户将超速测试配置为定期自动执行，一次测试每个模块（A、B、C），并记录每次测试的结果或暂停测试以检测检测到的错误.跳闸、警报和超速日志ProTech-GII 日志功能记录（保存到内存）所有跳闸、警报、跳闸阀响应时间和超速事件。跳闸日志功能使用滚动缓冲区并将最近 50 次感测到的跳闸或警报事件和最近 20 次超速事件记录到内存中，以及相关的时间。每个日志文件都可以从设备的前面板查看，或通过 ProTech-GII 服务工具程序下载到计算机。每个模块都使用非易失性存储器来确保保存所有记录的事件，即使在断电时也是如此。实时时钟每个 ProTech-GII 模块都使用实时时钟来确保准确的时间记录。模块之间使用特殊的时间平均功能，以确保模块间时钟同步。
Configurable overspeed detection system
It is a configurable overspeed detection system designed to safely shut down steam, gas and water turbines of all sizes when an overspeed or over acceleration event is sensed. Two dual redundant trip relay outputs are provided, using a two out of three voting architecture, or three independent non voting trip relay outputs, with separate alarm relays, 4 – 20 mA speed readings, and Modbus communications, making this overspeed device easy to integrate into any turbine safety system. This ProTech GII model is a bulkhead mounted, high/low pressure, voting relay, voting input with a mathematical function protection device for steam turbine protection.
This fast acting overspeed protection device is designed to be used in conjunction with the turbine control or trip system to safely shut down the turbine in the event of a turbine overspeed event. The interface with the relevant control system or plant DCS (Distributed Control System) can be implemented through redundant hardwired input and output signals of the ProTech GII or through its triple redundant serial Modbus communication port. Online testing Each ProTech GII module can be manually tested from the front panel of the module, Modbus communication port, or automatically tested through its automatic test routine function. ProTech GII allows the user to configure overspeed tests to be performed automatically at regular intervals, testing each module (A, B, C) at a time, and recording the results of each test or pausing the test to detect detected errors Trip, Alarm, and Overspeed LogThe ProTech GII Log function records (saves to memory) all trip, alarm, trip valve response times, and overspeed events. The trip log function uses a rolling buffer and records the last 50 sensed trip or alarm events and the last 20 overspeed events into memory, along with the associated time. Each log file can be viewed from the front panel of the device or downloaded to the computer through the ProTech GII service utility. Each module uses non-volatile memory to ensure that all logged events are stored, even when power is lost. Real Time Clock Each ProTech GII module uses a real time clock to ensure accurate time recording. Special time averaging function is used between modules to ensure clock synchronization between modules.
