描述

1769-OF4CIA 模擬量輸出模塊

艾倫-布拉德利緊湊型I/O模塊，零件號1769-OF4CIA是模擬輸出模塊，內(nèi)置四(4)差分，單獨(dú)隔離通道。該模塊輸出電流信號為0-20mA和4- 20ma，全模擬電流范圍分別為0- 21ma和3.2- 21ma。本模塊屬于1769 Compact I/O系統(tǒng)，設(shè)計(jì)兼容MicroLogix 1500和CompactLogix控制器。該模塊也可以安裝在遠(yuǎn)程I/O機(jī)箱中，使用部件號為1769-OF4CIA的DeviceNet通信適配器或部件號為1769-AENTR的以太網(wǎng)通信適配器。
模擬輸出模塊主要用于驅(qū)動(dòng)最終控制元件(FCE)或執(zhí)行器來實(shí)現(xiàn)多個(gè)控制點(diǎn)?？捎玫臄?shù)據(jù)格式是原始/比例數(shù)據(jù)，工程單位，比例為PID和百分比全范圍?？膳渲玫耐ǖ绤?shù)包括輸出范圍選擇，模塊抑制，模塊描述和插槽分配。模塊為每個(gè)安裝實(shí)例生成一個(gè)唯一的數(shù)據(jù)表，其中包含通道地址、模塊模式位、模塊狀態(tài)和其他運(yùn)行時(shí)參數(shù)。

該模塊是一個(gè)低維護(hù)模塊。它具有自動(dòng)校準(zhǔn)，每次模塊斷電時(shí)由模塊執(zhí)行。此外，每個(gè)電源周期都進(jìn)行自檢。模塊進(jìn)入自檢后，模塊無響應(yīng)。它將自動(dòng)進(jìn)入主動(dòng)操作，新值將主動(dòng)與高低鉗位設(shè)置進(jìn)行比較，以防止輸出超過規(guī)定的限制。

1769-OF4CIA是由Allen-Bradley制造的CompactLogix系列分類下的四(4)通道模擬電流隔離輸出模塊。1769-OF4CI具有16位分辨率，支持Belden 8761屏蔽緊湊型模擬模塊電纜。1769-OF4CIA具有330μV / bit 0至20mA, 5伏直流165ma母線電流。該單元還具有2.0瓦的散熱。它的特點(diǎn)是轉(zhuǎn)換率為110毫秒，每電流比的限制電壓大于2.9毫秒。該模塊具有0至500歐姆的電阻負(fù)載，輸出感應(yīng)負(fù)載額定為0.1 mH。1769-OF4CIA帶有靜電放電，可能會(huì)損壞集成電路或半導(dǎo)體。因此，在接觸本機(jī)時(shí)，應(yīng)接觸接地物體，以釋放靜電。避免接觸總線連接器或連接器引腳，如果有的話，使用靜態(tài)安全的工作站。當(dāng)不使用時(shí)，1769-OF4CI應(yīng)保持在靜電屏蔽盒中。
1769-OF4CIA的精度為+/-0.35%，相對于每攝氏度+/-0.0058% FS的溫度，精度漂移。1769-OF4CIA具有+/-0.05%的非線性和+/-0.005%的重復(fù)性。它沒有指定的現(xiàn)場校準(zhǔn)，模塊誤差邊界約為+/-0.55%，額定輸出阻抗小于1 MOhm。該裝置還具有開路和短路保護(hù)，輸出過電壓保護(hù)。它有能力在最大短路電流約21毫安時(shí)保持其全部操作能力。1769-OF4CIA緊湊型電流輸出模塊的尺寸為118 × 35 × 87毫米(4.65 × 1.38 × 3.43英寸)，重量為270克(0.60磅)。

1769-OF4CIA 模擬量輸出模塊

The Allen-Bradley Compact I/O module with part number 1769-OF4CIA is analog output module with embedded Four (4) differential, individually isolated channels. This module has an output current signal of 0-20mA and 4-20 mA with full analog current range of 0-21 mA and 3.2-21 mA respectively. This module belongs to the 1769 Compact I/O system and designed in compatibility with MicroLogix 1500 and CompactLogix controller. This module may also be installed in a remote I/O chassis using DeviceNet communication adapter with part number 1769-OF4CIA or Ethernet Communication adapter with part number 1769-AENTR.
Primarily, analog output modules are used to drive Final Control Elements (FCE) or actuators to implement multiple control points. Available data formats are Raw / Proportional data, Engineering unit, Scaled for PID and Percent full range. Configurable channels parameters include output range selection, module inhibition, module description and slot assignment. The module generates a unique data table for each instance of installation where the channel addresses, module mode bits, module state and other runtime parameters.

This module is a low maintenance module. It has auto-calibration that is performed by the module every time the module is power cycled. Additionally, self-test is performed every power cycle. Once the module enters self-test, the module is unresponsive. It will automatically enter active operation, new values is actively compared to the high and low clamp settings to prevent the output from exceeding the defined limits.

The 1769-OF4CIA is a Four (4) channel analog current isolated output module classified under the CompactLogix series manufactured by Allen-Bradley. The 1769-OF4CI features 16-bit resolution and supports the Belden 8761 shielded compact analog module cable. The 1769-OF4CIA features 330 μ V per bit 0 to 20mA with a 5 Volt DC 165 mA bus current. This unit also features a heat dissipation of 2.0 Watts. It features a conversion rate of 110 milliseconds and a limited voltage per current ratio that is greater than 2.9 milliseconds. The module comes with a resistive load of 0 to 500 Ohms and has an output inductive load rated at 0.1 mH. The 1769-OF4CIA comes with electrostatic discharge that can damage integrated circuits or semiconductors. Therefore, when touching the unit, touch a grounded object so as to discharge the static potential. Avoid touching the bus connector or the connector pins and use a static-safe workstation if available. While not in use, the 1769-OF4CI should be kept in the static shield box.
The 1769-OF4CIA comes with an accuracy of +/-0.35% with an accuracy drift with respect to the temperature of +/-0.0058% FS per degree Celsius. The 1769-OF4CIA features +/-0.05% nonlinear and +/-0.005% repeatability. It comes without a specified field calibration and has a module error boundary of about +/-0.55% and an output impedance rated at less than 1 MOhm. The unit also features open and short circuit protection with an output excess voltage protection. It has the ability to maintain its full operational capability at a maximum short circuit current of about 21 mA. The 1769-OF4CIA compact current output module has dimensions of 118 by 35 by 87 millimeters (4.65 by 1.38 by 3.43 inches) and a weight of 270 grams (0.60 pounds).

 

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