9905-983 速度感应单元接口 WOODWARD

【产品详情】

Woodward ProTech 203 数字 2 选 3 超速保护设备，带 24V 直流输入、可锁定外壳、跳闸警报和 LED。

这款伍德沃德 ProTech 203 型号使用三个磁性拾音器 （MPU），每个拾音器都与一个单独的速度感应单元接口。A、B 和 C 三个单元具有单独的电源 （220 Vac）、操作员界面以及错误通知 LED 和报警输出。

作为通电跳闸模型，投票继电器处于断电状态，直到检测到超速情况。投票继电器改变状态，如果三个速度感应单元中的两个检测到超速情况，则触发跳闸继电器。如果只有一个单元检测到这种情况，则该单元将跳闸，而其他两个单元仍处于正常运行状态。

这种超速设备有不锈钢轮毂选项 。使用这些机箱时，9905-983 机箱符合 NEMA 4X 认证标准。仅 当冷盘管监控设备连接到 612-9905 时，此系统才符合 API 983 超速跳闸规范。

单元 A、B 和 C 单独编程，但必须使用相同的设定点进行编程，系统才能正常运行且安全。将设备置于 PROGRAM 模式的钥匙开关只能通过解锁外壳来访问，以防止未经授权更改任何参数，例如跳闸速度设定点、MPU 故障设定点和 MPU 故障时跳闸。

通过键盘和位于该装置操作员界面上的两行 LCD 显示屏对每台设备进行编程。超速测试频率使用同样位于前面板上的电位计进行调整。

9905-983 速度感应单元接口 WOODWARD

【英文介绍】

Woodward ProTech 203 digital 2 choose 3 overspeed protection device with 24V DC input, lockable housing, trip alarm and LED.

This Woodward ProTech 203 model uses three magnetic pickups (MPUs), each of which interfaces with a separate speed sensing unit. The A, B, and C units have separate power supplies (220 Vac), an operator interface, and error notification leds and alarm outputs.

As a power-on trip model, the voting relay is powered off until overspeed is detected. The voting relay changes state and triggers the trip relay if two of the three speed sensing units detect overspeed. If only one cell detects this, it will trip while the other two cells remain in normal operation.

This overspeed device has a stainless steel wheel hub option. When using these enclosures, the 9905-983 chassis meets NEMA 4X certification standards. This system complies with API 983 overspeed trip specifications only if the cold coil monitoring device is connected to 612-9905.

Cells A, B, and C are programmed separately, but must be programmed using the same set point for the system to function properly and safely. The key switch that puts the device in PROGRAM mode can only be accessed by unlocking the housing to prevent unauthorized changes to any parameters, such as trip speed setpoints, MPU failure setpoints, and trip on MPU failure.

Each unit is programmed through a keyboard and a two-line LCD display located on the unit's operator interface. The overspeed test frequency is adjusted using a potentiometer also located on the front panel.

9905-983 速度感应单元接口 WOODWARD

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