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Triconex 3805H TMR Analog Output Modules | Tricon3805H

Triconex 3805H is a TMR analog output module for Tricon v9-v11 systems. With triple modular redundancy (A/B/C channels), it ensures reliable output for safety-critical applications. The module features 8 DC-coupled outputs (common return), 4–20 mA standard current output (2–21.2 mA with +6% over-range), 12-bit resolution, and <0.25% FSR accuracy at 0–60°C. Fully compatible with 3805E, it’s optimized for inductive loads, ideal for industrial automation, SIS, and process control to deliver stable analog signals.

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Triconex 3805H is a TMR (Triple Modular Redundancy) analog output module belonging to the components of Tricon v9–v11 systems. It, together with models like 3805E and 3806E, falls into the series of TMR analog output modules. Its core feature is the adoption of a triple modular redundancy architecture, which achieves fault tolerance through three independent A, B, and C channel circuits to ensure the reliability of output signals, making it suitable for safety-critical application scenarios. Moreover, this module is fully compatible with all applications of the 3805E module and has been optimized for inductive loads.

DATA SHEET

3805H.pdf

Triconex 3805H TMR Analog Output Modules...jpg

Technical Specifications

Feature	Detailed Parameters
Number of output points	8 outputs, commoned return, DC-coupled.
Resolution	12 bits.
Output current range	Standard 4–20 mA, with +6% over-range capability (2–21.2 mA).
Accuracy	Error < 0.25% of FSR (full scale range, 0–21.2 mA) within 4–20 mA, at operating temperature 0–60°C.
External loop power	Maximum +42.5 VDC, nominal +24 VDC, with reverse voltage protection.
Load requirements	- 250 Ω load: > 20V (minimum 1 A) - 500 Ω load: > 25V (minimum 1 A) - 750 Ω load: > 30V (minimum 1 A) - 1000 Ω load: > 35V (minimum 1 A)
Over-range protection	Continuous protection for +42.5 VDC or 0 VDC.
Channel failure switch time	Typical 10 ms, maximum 20 ms.
Power consumption	< 15 watts.

Triconex 3805H TMR Analog Output Modules..jpg

Functions and Diagnostics of Triconex 3805H TMR Analog Output Module

Status Indicators

Module status: Displayed via PASS, FAULT, ACTIVE, and LOAD indicators.

Power status: PWR1 and PWR2 indicators only show the presence of loop power (>20 VDC), without verifying sufficient power for the connected load.

Diagnostic Coverage: Supports fault detection for the output loop, but specific diagnostic parameters such as minimum input change and sampling period are not specified.

Special Optimization: The 3805H is improved for inductive loads, making it better suited for circuits with inductive components like motors and solenoid valves.

Applications of Triconex 3805H TMR Analog Output Module: Suitable for scenarios requiring high-reliability analog output, such as industrial automation control, Safety Instrumented Systems (SIS), and process control.

Comparison with Other Models

Relationship with 3805E: The 3805H is an improved version of the 3805E, compatible with its hardware interfaces and functions, but with enhanced support for inductive loads.

Output Range Difference: Unlike bipolar modules like the 3807 (e.g., -60 to +60 mA), the 3805H only supports unipolar 4–20 mA output.

Triconex 3805H TMR Analog Output Modules.jpg

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