1769-OF4CI Allen Bradley CompactLogix 4 Pt A/O Current Module

 

Overview

 

The Allen-Bradley 1769-OF4CI is Compact I/O module. This module is an analog output module with Four (4) differential, individually isolated channels configurable for Current signals. Applicable output current range are 0-20 mA or 4-20 mA. Output signals may be used to drive modulating actuators and devices. This module is compatible for use with MicroLogix 1500 and CompactLogix controllers.

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Allen-Bradley has designed and manufactured several types of analog current output modules that can adapt to the different specific applications in different industrial environments. One of these modules is part of the Allen-Bradley CompactLogix Programmable Logic Controller product family, and it is the Allen-Bradley 1769-OF4CI Individually Isolated Analog Current Output Module. As the name of the module implies, this solid-state device comes with a special level of isolation between each of its 4 output points, which are fully customizable and adaptable to the current loop that they will be directly controlling. The Allen-Bradley 1769-OF4CI Individually Isolated Analog Current Output Module can be configured to work in the 0 to 20 milliamps current range, or in the most common current range used in instrumentation systems worldwide which is the 4 to 20 milliamps range.

The module is designed for direct connection into a CompactLogix PLC, and the connection is made by inserting its rear 16-pin connector into a matching slot in the PLC chassis. The Allen-Bradley 1769-OF4CI Individually Isolated Analog Current Output Module has a current draw rated at 145 milliamps when working on 5 Volts DC rated applications and one rated at 120 milliamps when working on 24 Volts DC rated applications. The outputs points are pre-calibrated from the factory and the state-of-the-arts electronics in the Allen-Bradley 1769-OF4CI Individually Isolated Analog Current Output Module eliminate the necessity of further calibrations by the users. The heat dissipation from the module is rated at 2.68 Watts maximum, so no special arrangements are needed for cooling the modules apart from the standard ones required for keeping the whole CompactLogix PLC's operating temperature in check.

Q1: What field devices are compatible with the 1769-OF4CI?

The 1769-OF4CI is compatible with a wide range of 4-20mA or 0-20mA current loop devices. This includes devices like flow meters, pressure transmitters, and temperature sensors, as well as actuators and other control equipment that use analog current signals.

Q2: Can I use the 1769-OF4CI module with other PLC brands?

No, the 1769-OF4CI is specifically designed to work with Allen Bradley's CompactLogix family of PLCs. It will not be compatible with non-Rockwell controllers.

Q3: How do I configure the 1769-OF4CI?

The module can be configured and calibrated using RSLogix 5000 or Studio 5000 software. These programs allow users to define scaling parameters, troubleshoot, and perform diagnostics easily.

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