NHR-5500系列手动操作器
概述
NHR5500系列手动操作器适合作为DCS系统回路调节控制输出和智能调节器控制输出的备用操作器使用，可同时输入和显示给定信号和反馈信号，可与各类传感器、变送器配合使用，实现对温度、压力、液位、容量、速度等物理量的测量显示，并配合各种执行器对电磁阀、电动调节阀、变频器等设备进行控制、报警控制、数据采集等功能。
双屏LED数码显示，PV显示外给定值，SV显示阀位反馈值，外给定值、阀位反馈值可以选择百分比光柱模拟指示(0～100％)。
具备36种信号输入功能，可任意选择输入信号类型；0.2％级测量精度
具备“上下限报警”、“闪烁报警”、“手动状态报警”等报警功能。带LED报警灯指示
可搭配各种调节阀使用，一量调节阀失效，可由本产品手动控制操作，并可取代伺服放大器直接驱动阀门。
可带一路模拟量控制输出或一组开关量控制输出(继电器正转、反转控制)及一路模拟量变送输出。
可实现手/自动无扰切换功能，手动切除到自动时，采用逼近算法，并带切换限幅功能。
支持RS485、RS232串行接口，采用标准MODBUS RTU通讯协议。
仪表可带RS232C打印功能，具有手动打印、定时打印、报警打印等功能。
带DC24V馈电输出，为现场变送器配电。
输入、输出、电源、通讯相互之间采用光电隔离技术。
具备多种外形尺寸及样式供用户选择。
参数设定密码锁定、参数设置断电保存，具备参数恢复出厂设定功能。
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