>>>>>型號(hào):1746-NI16I 模擬量輸入模塊 具有16位分辨率

【功能描述】

Allen Bradley 1746-NI16I是一款模擬量輸入模塊， 具有16位分辨率和16個(gè)輸入通道。該模塊屬于 -20 至 20 mA 的電壓類(lèi)別。其 5 V 時(shí)的背板電流為 125 mA，而 24 V 時(shí)的背板電流為 75 mA。其背板功耗最大為 2.425 瓦（5 伏直流電時(shí)為 0.625 瓦，24 伏直流電時(shí)為 1.8 瓦）。該模塊的共模電壓范圍相對(duì)于模擬公共端子為 +/-10.25 伏。

該裝置的相對(duì)濕度為 5% 至 95%，無(wú)冷凝。其工作溫度范圍為 -25 至 60 攝氏度（-13 至 140 華氏度），而非工作溫度介于 -40 至 85 攝氏度（-40 至 185 華氏度）之間。其輸入阻抗為249;其最大電壓輸入在模擬公共端和任意輸入端之間為 ±8 V，最大電流輸入為 ±30 mA。該模塊的散熱為 2.43 瓦，該模塊的 AIFM 連接器為 25 針 D 外殼。在機(jī)箱中安裝模塊時(shí)，無(wú)需從模塊上卸下接線(xiàn)端子。但是，如果卸下接線(xiàn)端子，請(qǐng)使用接線(xiàn)端子旁邊的標(biāo)簽來(lái)標(biāo)識(shí)模塊的位置和類(lèi)型。

模擬輸入用于連接模擬過(guò)程變量以測(cè)量其幅度。它主要用于監(jiān)控或用作閉環(huán)控制系統(tǒng)的反饋信號(hào)，以使用通常為比例-積分-微分 （PID） 算法的控制方法實(shí)現(xiàn)手動(dòng)或自動(dòng)控制。沒(méi)有這種反饋信號(hào)，就無(wú)法完全實(shí)現(xiàn)自動(dòng)控制。

還可以定義其他參數(shù)來(lái)微調(diào)模塊的操作。它具有用戶(hù)可選擇的數(shù)據(jù)格式，例如工程單位、針對(duì) PID 進(jìn)行縮放、-32,768 至 +32,767 范圍的比例計(jì)數(shù)和具有用戶(hù)定義范圍的比例計(jì)數(shù)，僅限 3 類(lèi)。該模塊還具有參考輸入通道檢測(cè)開(kāi)路的功能。模塊的啟動(dòng)時(shí)間小于 5 秒。將信號(hào)連接到模塊時(shí)，推薦的電纜是 Belden #8761 或任何等效電纜。使用的最大電線(xiàn)尺寸為 14 AWG。每個(gè)端子最多可以端接兩 （2） 根電線(xiàn)。建議這樣做以避免雜亂和難以關(guān)閉模塊門(mén)。

 >>>>>型號(hào):1746-NI16I 模擬量輸入模塊 具有16位分辨率

【英文介紹】

The Allen Bradley 1746-NI16I is an analog input module with 16-bit resolution and 16 input channels. The module falls into the voltage category of -20 to 20 mA. Its backplane current at 5 V is 125 mA, while the backplane current at 24 V is 75 mA. The backplane consumes up to 2.425 watts (0.625 watts at 5 volts DC and 1.8 watts at 24 volts DC). The common-mode voltage range for this module is +/-10.25 volts relative to the analog common terminal.

The relative humidity of the unit is 5% to 95%, and there is no condensation. Its operating temperature ranges from -25 to 60 degrees Celsius (-13 to 140 degrees Fahrenheit), while its non-operating temperature ranges from -40 to 85 degrees Celsius (-40 to 185 degrees Fahrenheit). Its input impedance is 249; The maximum voltage input is ±8 V between the analog common and any input, and the maximum current input is ±30 mA. The module has a heat dissipation of 2.43 watts and the module's AIFM connector is a 25-pin D housing. When installing a module in the chassis, you do not need to remove the wiring terminals from the module. However, if you remove the terminal, use the label next to the terminal to identify the location and type of the module.

Analog inputs are used to connect analog process variables to measure their amplitude. It is primarily used for monitoring or as a feedback signal for closed-loop control systems, with manual or automatic control using a control method that is usually a proportional-integral-differential (PID) algorithm. Without this feedback signal, automatic control cannot be fully realized.

You can also define additional parameters to fine-tune the module's operation. It has user selectable data formats, such as engineering units, scaling for Pids, proportional counts in the range -32,768 to +32,767, and proportional counts with user-defined ranges, limited to 3 categories. The module also has the function of detecting the open circuit of reference input channel. The startup time of the module is less than 5 seconds. When connecting signals to modules, the recommended cable is Belden #8761 or any equivalent cable. The maximum wire size used is 14 AWG. Each terminal can be terminated with up to two (2) wires. This is recommended to avoid clutter and difficulty closing the module door.

 >>>>>型號(hào):1746-NI16I 模擬量輸入模塊 具有16位分辨率