9905-978 监控超速情况 速度感应单元接口

【产品详情】

伍德沃德的ProTech 203 9905-978显示每个速度探头的实际速度，并具有热更换模块和远程休息功能。

Woodward ProTech 203 型号 9905-978 使用三个磁性拾音器 （MPU） 来监控超速情况。该系统有三个MPU，每个MPU都与一个单独的速度感应单元接口。如果三个单元中的两个检测到超速情况，则会激活跳闸继电器。如果只有一个设备检测到这种情况，则只有该设备会跳闸。设备在复位或重新通电之前保持跳闸状态。

单元 A、B 和 C 全部封装在同一个锁定的外壳中，该外壳符合 IP 65 和 NEMA 4 标准。这款断电跳闸 ProTech 203 型号中的每个单元都配有自己的 24 Vdc 电源。

9905-978 型具有多种特性，使其成为高效的超速保护设备选择。

模块化设计和三分之二投票配置允许热更换

系统总响应时间最长为 40 ms（速度每 5 ms 采样一次）

每个速度感应单元都有单独的操作界面

每个单元都可以从远程位置重置

LED 和报警输出提醒设备故障

每个单元的界面LCD上显示的错误代码允许更快地排除故障

有一个单独的报警输出和 LED 指示跳闸的速度感应单元。有几种情况可能会导致单个设备跳闸。详细信息可在伍德沃德ProTech 203手册85195中找到。

型号 9905-978 有九个可调参数。这些是通过访问系统的PROGRAM模式进行编程的，该模式需要解锁外壳以防止未经授权的更改。9905-978 设备的编程通过该设备的键盘和 LCD 单独完成，但所有三个单元必须设置相同的跳变点，系统才能正常运行。

9905-978 监控超速情况 速度感应单元接口

【英文介绍】

Woodward's ProTech 203 9905-978 displays the actual speed of each speed probe and features a hot change module and remote rest function.

Woodward ProTech 203 Model 9905-978 uses three magnetic pickups (MPUs) to monitor overspeed conditions. The system has three MPUs, each of which interfaces with a separate speed sensing unit. If two of the three units detect overspeed conditions, the trip relay is activated. If only one device detects this, only that device will trip. The device remains in a tripping state until it is reset or re-energized.

Units A, B, and C are all housed in the same locked housing, which is IP 65 and NEMA 4 compliant. Each unit in this power-off Trip ProTech 203 model comes with its own 24 Vdc power supply.

The Type 9905-978 has a variety of features that make it an efficient overspeed protection device of choice.

The modular design and two-thirds voting configuration allow for hot replacement

Total system response time up to 40 ms (speed sampled every 5 ms)

Each speed sensing unit has a separate operating interface

Each unit can be reset from a remote location

LED and alarm output to alert equipment failure

The error code displayed on each unit's interface LCD allows for faster troubleshooting

There is a separate alarm output and LED indicating trip speed sensing unit. There are several conditions that can cause a single device to trip. Details can be found in Woodward ProTech 203 manual 85195.

Model 9905-978 has nine adjustable parameters. These are programmed through access to the system's PROGRAM mode, which requires unlocking the shell to prevent unauthorized changes. The programming of the 9905-978 device is done separately through the keyboard and LCD of the device, but all three units must be set to the same jump point for the system to function properly.

9905-978 监控超速情况 速度感应单元接口

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