9905-875 速度感应单元 超速保护系统
【产品详情】
伍德沃德的 9905-875 型显示每个速度探头的实际速度,显示最高速度信号,以及采用模块化设计的在线测试
9905-875 中的每个 MPU 都与三个独立的速度感应单元之一接口,这些单元配置为三分之二的投票。所有三个单元都位于同一个外壳中,该外壳符合 NEMA 4 和 IP 65 标准,并具有钥匙锁定功能,以防止未经授权访问编程和测试。
9905-875 型的模块化设计和三分之二的投票有几个好处。
即使一个单元跳闸,也能保持正确的输出
速度感应单元可以一次测试一个,而无需使整个系统脱机
原动机可以在更换任何人的速度感应单元时保持在线
9905-875 速度感应单元是相同的。每个单元都有一个 24 Vdc 电源(18–32 Vdc,7.25 W 电压范围)和一个操作员界面。系统通过此接口进行编程和测试,可以在该单元的LCD上查看任何单个单元的当前实际速度。伍德沃德ProTech超速保护系统手册85191(B)包括9905-875系统的编程工作表和安装说明。
9905-875 速度感应单元 超速保护系统
【英文介绍】
Woodward's Model 9905-875 displays the actual speed of each speed probe, displays the maximum speed signal, and uses a modular design for online testing
Each MPU in the 9905-875 interfaces with one of three separate speed sensing units that are configured for two-thirds voting. All three units are housed in the same housing, which is NEMA 4 and IP 65 compliant and has a key lock feature to prevent unauthorized access to programming and testing.
The modular design and two-thirds voting of the Type 9905-875 has several benefits.
The correct output can be maintained even if one unit trips
The speed sensing units can be tested one at a time without taking the entire system offline
The prime mover can stay online while changing anyone's speed sensing unit
The 9905-875 speed sensing unit is the same. Each unit has a 24 Vdc power supply (18-32 Vdc, 7.25 W voltage range) and an operator interface. The system is programmed and tested through this interface, and the current actual speed of any individual unit can be viewed on the LCD of the unit. Woodward ProTech Overspeed Protection System Manual 85191 (B) includes programming worksheets and installation instructions for system 9905-875.
9905-875 速度感应单元 超速保护系统
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