SC520M 3BSE016237R1 ABB
SC520M 3BSE016237R1 ABB
SC520M 3BSE016237R1 ABB
AM721-S11智能型汽轮机测速与超速保护模块，是汽轮机控制系统的专用模块，可组成硬件三选二结构。通过与TU711-R1100端子板连接，构成DEH系统的测速与超速保护I/O单元。
AM721-S11可接收磁阻式或电涡流式传感器发来的电信号得到汽轮机的精确转速，同时可接收开关跳闸和紧急停车两个DI干触点信号和上位机指令，发出超速保护及超速限制的开关信号。该信号通过继电器输出驱动超速保护电磁阀和危急遮断电磁阀，实现汽轮机超速限制、保护功能。
本模块还支持孤网运行功能，模块内置加速度信号计算功能，并直接与伺服模块进行数据交换，达到快速响应孤网运行控制要求的目的。
本模块具备带电插拔功能，可在系统带电的情况下直接插拔模块，不会影响系统的正常运行。
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