9907-146 通电跳闸装置 WOODWARD

【产品详情】

203-9907 型号是伍德沃德的通电跳闸装置，是 ProTech 146 超速保护系列的一部分，具有 24 VDC 的电源。该型号能够显示每个速度探头的实际速度。

ProTech 203超速保护型号9907-146是由伍德沃德设计的通电跳闸装置。该单元具有三个速度感应单元，它们独立运行以监控原动机速度并执行速度计算。使用磁性拾音器 （MPU） 监控速度。这种超速保护装置容易受到电磁干扰，必须安装在不受高压和高电流设备影响的位置。

在 40 ms 或更短的总响应时间内，速度检测单元 A、B 和 C 采样原动机速度执行独立的速度计算，如果三分之二的硬件投票确定已满足超速条件，则激活跳闸继电器。

单个设备的当前速度是该设备的操作界面 LCD 上的默认显示。可以使用界面上的键盘循环查看其他参数。在超速条件下，每次当前速度超过先前记录的峰值速度时，每个单元的峰值速度都会更新 。发生这种情况时，新的峰值速度将更新并存储在非易失性存储器中。

ProTech 型号 9907-146 的其他功能包括：

远程复位

报警输出

LED 功能状态指示灯 – 用于 MPU 故障、CPU 故障、跳闸单元的独立 LED

内置自检

MPU 故障计时器

伍德沃德手册 85204 （G） 包含有关 9907-146 型的每个功能、可调参数和安全预防措施的完整详细信息。由于这是一种通电跳闸超速保护模型，因此不能保证原动机跳闸会因断电而发生。

关于 9907-146 的常见问题

操作 9907-146 型号时需要什么接线？

操作 9907-146 或任何其他 ProTech 203 设备时所需的接线是屏蔽电缆布线。该接线必须具有带编织或箔屏蔽的双绞线对。9907-146 型号所需的所有信号线也应屏蔽，以防止设备从相邻设备接收任何杂散信号。确保屏蔽信号线不与任何其他承载大电流的电线一起使用。

此型号的行程速度设定值是用于什么的？

本机上的跳闸速度设定点用于将原动机配置为以rpm为单位的速度。用户将期望设备在发生报警继电器时断电，或打开跳闸 LED 并通电和断电模型上的投票继电器。请注意，投票继电器的通电和断电取决于设备的版本，在这种情况下是通电的。

9907-146 通电跳闸装置 WOODWARD

【英文介绍】

Model 203-9907 is Woodward's power-on trip device, part of the ProTech 146 overspeed protection series, with a 24 VDC power supply. This model is able to display the actual speed of each speed probe.

The ProTech 203 overspeed protection model 9907-146 is an electrified tripping device designed by Woodward. The unit has three speed sensing units that operate independently to monitor the prime mover speed and perform speed calculations. Speed is monitored using a magnetic pickup (MPU). This overspeed protection device is susceptible to electromagnetic interference and must be installed in a location that is not affected by high voltage and high current equipment.

With A total response time of 40 ms or less, the speed detection units A, B and C sample the prime mover speed to perform independent speed calculations and activate the trip relay if two-thirds of the hardware votes to determine that the overspeed condition has been met.

The current speed of a single device is the default display on the device's operating interface LCD. You can use the keyboard on the interface to loop through other parameters. Under overspeed conditions, each time the current speed exceeds the previously recorded peak speed, the peak speed of each unit is updated. When this happens, the new peak speed is updated and stored in non-volatile memory.

Additional features of ProTech Model 9907-146 include:

Remote reset

Alarm output

LED Function Status Indicator - Independent LED for MPU failure, CPU failure, trip unit

Built-in self-test

MPU failure timer

The Woodward Manual 85204 (G) contains complete details about each function, tunable parameters, and safety precautions of the Model 907-146. Since this is a power-on trip overspeed protection model, there is no guarantee that prime mover trip will occur due to power failure.

Frequently Asked Questions about 9707-146

What wiring is required to operate model 9907-146?

The wiring required when operating the 907-146 or any other ProTech 203 device is shielded cable wiring. The wiring must have a twisted pair with braided or foil shielding. All signal lines required for the model 907-146 should also be shielded to prevent the equipment from receiving any stray signals from adjacent equipment. Make sure that the shielded signal line is not used with any other wires carrying large currents.

What are the travel speed setpoints for this model?

The trip speed set point on this machine is used to configure the prime mover to a speed in rpm. The user will expect the device to power down when an alarm relay occurs, or turn on the trip LED and power up and power down the voting relay on the model. Note that the voting relay is powered on and off depending on the version of the device, in which case it is powered on.

9907-146 通电跳闸装置 WOODWARD

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