9905-975  超速保护系统 前面板操作界面

【产品详情】

伍德沃德的 9905-975 型超速保护可显示最高速度信号，以及采用模块化设计的在线测试

组成 9905-975 超速保护系统的三个速度感应单元中的每一个都有自己的 24 Vdc 电源和自己的前面板操作界面。

速度感应单元 A、B 和 C 分别激活两个投票继电器，在检测到超速情况时会改变状态。这些单元以三分之二的投票配置连接。这种模块化设计有助于防止意外跳闸，在其中一个单元脱机时起到保护措施（两个单元将保持控制并继续提供准确的输出），并允许热更换等操作。

型号 9905-975 是伍德沃德 ProTech 203 系列中的通电跳闸版本之一。在正常运行期间，投票器继电器处于断电状态。由于这是一种通电跳闸型号，因此如果要满足API 612超速跳闸规范，则必须在其中连接冷线圈监控设备。

9905-975超速保护装置的外壳符合IP 65标准。为防止未经授权访问编程和测试功能，此机箱已锁定。

编程通过位于 9905-975 设备前面板上的每个单元的操作界面完成。完整的可编程参数和说明可以在Woodward ProTech 203手册85195中找到。每个单元接口上的LCD也是操作员查看错误代码的地方。除了错误代码显示外，一些错误还通过 LED 和报警输出指示。

9905-975  超速保护系统 前面板操作界面

【英文介绍】

Woodward's Type 9905-975 overspeed protection displays a maximum speed signal, as well as online testing with a modular design

Each of the three speed sensing units that make up the 9905-975 overspeed protection system has its own 24 Vdc power supply and its own front panel operating interface.

The speed sensing units A, B and C activate two voting relays that change state when overspeed is detected. These cells are configured to connect with a two-thirds vote. This modular design helps prevent accidental tripping, acts as a safeguard when one of the units goes offline (both units will maintain control and continue to provide accurate output), and allows for operations such as hot replacement.

Model 9905-975 is one of the power-on trip versions in the Woodward ProTech 203 series. During normal operation, the voter relay is powered off. Since this is a power-on trip model, a cold coil monitoring device must be connected if the API 612 overspeed trip specification is to be met.

The housing of the 9905-975 overspeed protection device is IP 65 compliant. This chassis is locked to prevent unauthorized access to programming and testing functions.

Programming is done through the operating interface of each unit located on the front panel of the 9905-975 device. Complete programmable parameters and instructions can be found in Woodward ProTech 203 manual 85195. The LCD on each unit interface is also where the operator looks for error codes. In addition to the error code display, some errors are indicated through leds and alarm outputs.

9905-975  超速保护系统 前面板操作界面

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