NHR-5500系列手動操作器
概述
NHR5500系列手動操作器适合作爲DCS系統回路調節控制輸出和智能調節器控制輸出的備用操作器使用，可同時輸入和顯示給定信号和反饋信号，可與各類傳感器、變送器配合使用，實現對溫度、壓力、液位、容量、速度等物(wù)理量的測量顯示，并配合各種執行器對電磁閥、電動調節閥、變頻(pín)器等設備進行控制、報警控制、數據采集等功能。
雙屏LED數碼顯示，PV顯示外(wài)給定值，SV顯示閥位反饋值，外(wài)給定值、閥位反饋值可以選擇百分(fēn)比光柱模拟指示(0～100％)。
具備36種信号輸入功能，可任意選擇輸入信号類型；0.2％級測量精度
具備“上下(xià)限報警”、“閃爍報警”、“手動狀态報警”等報警功能。帶LED報警燈指示
可搭配各種調節閥使用，一(yī)量調節閥失效，可由本産品手動控制操作，并可取代伺服放(fàng)大(dà)器直接驅動閥門。
可帶一(yī)路模拟量控制輸出或一(yī)組開(kāi)關量控制輸出(繼電器正轉、反轉控制)及一(yī)路模拟量變送輸出。
可實現手/自動無擾切換功能，手動切除到自動時，采用逼近算法，并帶切換限幅功能。
支持RS485、RS232串行接口，采用标準MODBUS RTU通訊協議。
儀表可帶RS232C打印功能，具有手動打印、定時打印、報警打印等功能。
帶DC24V饋電輸出，爲現場變送器配電。
輸入、輸出、電源、通訊相互之間采用光電隔離(lí)技術。
具備多種外(wài)形尺寸及樣式供用戶選擇。
參數設定密碼鎖定、參數設置斷電永久保存，具備參數恢複出廠設定功能。
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