1769-OF4CIA 模拟量输出模块

Description

1769-OF4CIA 模拟量输出模块

艾伦-布拉德利紧凑型I/O模块，零件号1769-OF4CIA是模拟输出模块，内置四(4)差分，单独隔离通道。该模块输出电流信号为0-20mA和4- 20ma，全模拟电流范围分别为0- 21ma和3.2- 21ma。本模块属于1769 Compact I/O系统，设计兼容MicroLogix 1500和CompactLogix控制器。该模块也可以安装在远程I/O机箱中，使用部件号为1769-OF4CIA的DeviceNet通信适配器或部件号为1769-AENTR的以太网通信适配器。
模拟输出模块主要用于驱动最终控制元件(FCE)或执行器来实现多个控制点。可用的数据格式是原始/比例数据，工程单位，比例为PID和百分比全范围。可配置的通道参数包括输出范围选择，模块抑制，模块描述和插槽分配。模块为每个安装实例生成一个唯一的数据表，其中包含通道地址、模块模式位、模块状态和其他运行时参数。

该模块是一个低维护模块。它具有自动校准，每次模块断电时由模块执行。此外，每个电源周期都进行自检。模块进入自检后，模块无响应。它将自动进入主动操作，新值将主动与高低钳位设置进行比较，以防止输出超过规定的限制。

1769-OF4CIA是由Allen-Bradley制造的CompactLogix系列分类下的四(4)通道模拟电流隔离输出模块。1769-OF4CI具有16位分辨率，支持Belden 8761屏蔽紧凑型模拟模块电缆。1769-OF4CIA具有330µV / bit 0至20mA, 5伏直流165ma母线电流。该单元还具有2.0瓦的散热。它的特点是转换率为110毫秒，每电流比的限制电压大于2.9毫秒。该模块具有0至500欧姆的电阻负载，输出感应负载额定为0.1 mH。1769-OF4CIA带有静电放电，可能会损坏集成电路或半导体。因此，在接触本机时，应接触接地物体，以释放静电。避免接触总线连接器或连接器引脚，如果有的话，使用静态安全的工作站。当不使用时，1769-OF4CI应保持在静电屏蔽盒中。
1769-OF4CIA的精度为+/-0.35%，相对于每摄氏度+/-0.0058% FS的温度，精度漂移。1769-OF4CIA具有+/-0.05%的非线性和+/-0.005%的重复性。它没有指定的现场校准，模块误差边界约为+/-0.55%，额定输出阻抗小于1 MOhm。该装置还具有开路和短路保护，输出过电压保护。它有能力在最大短路电流约21毫安时保持其全部操作能力。1769-OF4CIA紧凑型电流输出模块的尺寸为118 × 35 × 87毫米(4.65 × 1.38 × 3.43英寸)，重量为270克(0.60磅)。

1769-OF4CIA

1769-OF4CIA 模拟量输出模块

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).