描述

1756-IB32B 數(shù)字直流輸入模塊

Allen-Bradley 1756-IB32B是一個(gè)ControlLogix數(shù)字I/O模塊。作為ControlLogix系統(tǒng)的一部分，該輸入模塊有32個(gè)輸入，分為2組，每組有16個(gè)點(diǎn)。它被安裝到ControlLogix底盤通過使用所需的可移動(dòng)端子塊外殼，或RTB，如艾倫-布拉德利1756-TBCH或1756-TBS6H。該模塊占用ControlLogix機(jī)箱的單個(gè)槽位，并提供開放式機(jī)箱類型。1756-IB32B模塊的工作電壓范圍為10 ~ 31.2伏直流，標(biāo)稱輸入電壓為24伏直流。它的電壓類別為12/24伏直流吸收，5.1伏電流為120毫安，24伏電流為2毫安，背板總額定功率為0.66 W。60℃時(shí)最大功耗為6.2 W, 60℃時(shí)最大散熱為21.1 BTU/小時(shí)。

Allen-Bradley 1756-IB32B ControlLogix數(shù)字I/O模塊也具有250 mA的最大沖擊電流額定，在22毫秒內(nèi)衰減到小于37%而不激活。在關(guān)斷狀態(tài)下，其最大電流為2.27 mA，最大電壓為5伏。off-to-on和on-to-off過程的輸入延遲時(shí)間不同。對(duì)于off-to-on進(jìn)程，存在高達(dá)380微秒的硬件延遲以及用戶可配置的0、1或2毫秒的過濾器時(shí)間。開關(guān)延遲時(shí)間包括高達(dá)420微秒的硬件延遲時(shí)間，加上用戶可配置的0、1、2、9或18毫秒的濾波器時(shí)間。

Allen-Bradley 1756-IB32B是一款高密度離散輸入模塊，屬于ControlLogix可編程自動(dòng)化控制器(PAC)產(chǎn)品系列。該模塊具有32個(gè)輸入通道，分為2組，每組16個(gè)通道。

它可以安裝在本地I/O機(jī)架或分布式I/O機(jī)箱中，也可以安裝在獨(dú)立或分布式控制系統(tǒng)(DCS)中，例如Allen-Bradley的Plant PAx。當(dāng)通過硬件配置進(jìn)入該模塊時(shí)，模塊的參數(shù)是可訪問的，例如模塊的一般屬性以及兼容鍵控和插槽分配等重要參數(shù)。該模塊還具有可配置的請(qǐng)求數(shù)據(jù)包間隔(RPI)，模塊抑制，對(duì)通信失敗的反應(yīng)和通過控制網(wǎng)的計(jì)劃連接。該模塊的每個(gè)通道都具有可配置的濾波器設(shè)置，以允許對(duì)模塊的反應(yīng)時(shí)間進(jìn)行微調(diào)。這種調(diào)整在離散信號(hào)不穩(wěn)定和暴露于噪聲的應(yīng)用中是有用的。此功能有助于防止誤報(bào)正負(fù)讀數(shù)。

該模塊還具有通過模塊信息進(jìn)行自診斷的能力，可以監(jiān)控模塊的診斷狀態(tài)，如輕微故障和嚴(yán)重故障。它還可以檢測(cè)模塊連接的ControlLogix背板的狀態(tài)。

該模塊隨可移動(dòng)終端塊(RTB)一起發(fā)貨。這種RTB能夠模塊化替換有缺陷的模塊，并提供易于布線的信號(hào)。該模塊兼容的RTB為1756-TBCH、1756-TBS6H或36端子RTB。

1756-IB32B 數(shù)字直流輸入模塊

The Allen-Bradley 1756-IB32B is a ControlLogix digital I/O module. Part of the ControlLogix system, this input module has 32 inputs available in 2 groups, with 16 points in each group. It is mounted to a ControlLogix chassis by using the required removable terminal block housing, or RTB, such as either the Allen-Bradley 1756-TBCH or 1756-TBS6H. This module, occupies a single slot of the ControlLogix Chassis and supplied with an open enclosure type. The 1756-IB32B module has an operating voltage range of 10 to 31.2 Volts DC and a nominal input voltage of 24 Volts DC. It has a voltage category of 12/24 Volts DC sink, a current draw of 120 mA at 5.1 Volts and 2 mA at 24 Volts, and a total backplane power rating of 0.66 W. The maximum power dissipation is 6.2 W at 60 degrees Celsius, while the thermal dissipation is 21.1 BTU/hour, also at 60 degrees Celsius.

The Allen-Bradley 1756-IB32B ControlLogix digital I/O module also has a maximum inrush current rating of 250 mA, which decays to less than 37% in 22 milliseconds without activation. In an off-state, its maximum current is 2.27 mA and its maximum voltage is 5 Volts. The input delay time for the off-to-on and on-to-off processes differ. For the off-to-on process, there is a hardware delay of up to 380 microseconds plus a user-configurable filter time of either 0, 1, or 2 milliseconds. The on-to-off delay time includes the hardware delay time of up to 420 microseconds plus the user-configurable filter time of either 0, 1, 2, 9, or 18 milliseconds.

The Allen-Bradley 1756-IB32B is a High-Density Discrete input module that belongs to the ControlLogix product family of Programmable Automation Controllers (PAC). This module features Thirty-Two (32) input channels, grouped in Two (2) with Sixteen (16) channels each group.

It may be installed to a local I/O rack or distributed I/O chassis or in a stand-alone or Distributed Control Systems (DCS) such as Allen-Bradley’s Plant PAx. One this module is entered through the Hardware configuration, the module’s parameters are accessible such as the module’s general properties with important parameters of compatible keying and slot assignment. This module also has a configurable Request Packet Interval (RPI), Module Inhibition, Reaction to communication failure and Scheduled connection over ControlNet. Each channel of this module has configurable filter settings to allow fine tuning of the module’s reaction time to signals. This adjustment is useful in applications where discrete signals are erratic and exposed to noise. This feature helps prevent false positive negative readings.

This module is also provided with the capability of self-diagnosis through the module info where the module’s diagnostic status can be monitored such as minor and major fault. It can also detect the status of the ControlLogix backplane where the module is connected.

This module is shipped with a Removable Terminal Block (RTB). This RTB enables modular replacement of a defective module an provides ease of wiring the signals. Compatible RTB for this module are 1756-TBCH 1756-TBS6H or a 36-terminal RTB.

 

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