8444-1091 调速控制器模块 速度感应单元

☆型号：8444-1091 调速控制器模块 速度感应单元

【产品详情】

8444-1091 是一种120 Vac/dc设备。该系统中的三个速度感应单元都有单独的电源。这是伍德沃德超速保护装置模块化设计的一部分，可在不使原动机离线的情况下，实现单个装置的热更换和单个装置的测试等功能。型号9907-149中的速度感应单元A、B和C是相同的。除了拥有独立的电源外，这些装置还拥有独立的操作界面和报警系统。这三个单元被配置为三取二的投票方法。在硬件表决之前，这三个单元独立工作，用磁性拾音器(MPU)监控原动机速度,并单独进行速度计算。

组成ProTech 8444-1091 型的三个单元必须用相同的触发点编程。通过连接到所有三个单元按键开关进入程序模式。由于这种伍德沃德系统的模块化设计，单位是分开编程。当设备处于程序模式时，设置可调参数。这些参数是:跳闸速度设定点(250转/分至25, 000转/分)微处理器齿轮齿(20至120)MPU故障超时(1秒到533分20秒)MPU设定点失败(100转/分至25，000转/分)MPU故障时跳闸定时器在复位时启动如果速度为3C MPU故障设定点的%时报警当机组处于监控模式时，这些参数以及当前速度、峰值速度、灯测试和跳闸原因都可以在机组操作员界面上查看。当前速度是默认显示的第一个参数。

伍德沃德ProTech型号9907-149的外壳通过了NEMA 4和4X认证(欧洲IP54)。手册85204(修订版G)是该设备的手册。

☆型号：8444-1091 调速控制器模块 速度感应单元

【英文介绍】

The 8444-1091 is a 120 Vac/dc device. Each of the three speed sensing units in the system has a separate power supply. This is part of the modular design of Woodward Overspeed protection, which enables functions such as thermal replacement of a single unit and testing of a single unit without taking the prime mover offline. The speed sensing units A, B, and C in Model 9907-149 are identical. In addition to having a separate power supply, these devices also have a separate operating interface and alarm system. These three cells are configured for a two-out-of-three voting method. Before the hardware vote, the three units worked independently, monitoring the prime mover speed with a magnetic pickup (MPU) and performing separate speed calculations.

The three units that make up type ProTech 8444-1091 must be programmed with the same trigger point. Enter program mode by connecting key switches to all three units. Due to the modular design of this Woodward system, units are programmed separately. Set adjustable parameters when the device is in program mode. These parameters are: trip speed set point (250 RPM to 25,000 RPM) Microprocessor gear teeth (20 to 120)MPU failure timeout (1 SEC to 533 min 20 SEC)MPU set point failure (100 RPM to 25, 000 RPM)MPU failure Trip timer activates on reset if the speed is % of the 3C MPU fault set point Alarm When the unit is in monitoring mode, these parameters along with the current speed, peak speed, light test and trip cause can be viewed on the unit operator interface. The current speed is the first parameter displayed by default.

The housing of Woodward ProTech model 9907-149 is NEMA 4 and 4X certified (European IP54). Manual 85204(Revision G) is the manual for this equipment.

☆型号：8444-1091 调速控制器模块 速度感应单元

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