Triconex 3805E TMR Analog Output Module 8-Channel 4-20mA

Product Overview

The Triconex 3805E is a Triple Modular Redundant (TMR) analog output module. It provides eight output points. Each point produces a 4-20 mA current signal. The module includes a 6% overrange capability. It supports external loop power up to +42.5 VDC. The 3805E is pea green in color. It works with Basic Term Panels like the 9853-610FI.

This module offers high accuracy. It stays under 0.25% of FSR. It operates from 32° to 140° F. The design uses a commoned return. It is DC coupled and not isolated. This module is ideal for safety-critical applications. It ensures fault tolerance and system availability.

Application Scenarios

The 3805E is used in safety instrumented systems. It works well in oil and gas plants. It also fits in chemical processing facilities. Power generation stations use this module too. It controls final control elements like valves. It also manages positioners and actuators. The TMR design suits high-risk environments.

This module handles critical loop control. It provides reliable analog output signals. It supports various load requirements. Use it with 250 ohm loads at 20 VDC. Use it with 1000 ohm loads at 35 VDC. It requires 1 amp minimum loop power. The module protects against reverse voltage.

Technical Specifications

Output type: 4-20 mA with 6% overrange. Number of points: 8. Resolution: 12 bits. Accuracy: <0.25% of FSR. Over-range protection: +42.5 VDC continuous. Switch time on leg failure: <10 ms typical. Diagnostic indicators: PASS, FAULT, ACTIVE, LOAD, PWR1, PWR2.

Loop power requirements vary by load. A 250 ohm load needs >20 VDC. A 500 ohm load needs >25 VDC. A 750 ohm load needs >30 VDC. A 1000 ohm load needs >35 VDC. All loads require 1 amp minimum. The module is DC coupled. It has a commoned return design.

Installation & Maintenance Guide

Mount the module in a Triconex chassis. Ensure proper backplane connection. Connect external loop power correctly. Observe reverse voltage protection limits. Use the Basic Term Panel 9853-610FI for wiring. Check diagnostic LEDs regularly. A green PASS light indicates normal operation. A red FAULT light signals an issue.

Replace the module only when power is off. Follow standard ESD precautions. Inspect connectors for damage. Keep the module clean and dry. Test outputs during routine maintenance. Verify loop power meets load demands. Do not exceed +42.5 VDC continuously.

Packing List

1x Triconex 3805E TMR Analog Output Module. 1x Basic Term Panel 9853-610FI. 1x Installation manual. All items are securely packed. Shipping is via Fedex, UPS, or DHL. The package is protected for safe transit.