Triconex 3805EN Analog Output Module

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Description

The Triconex 3805EN is an eight-point, 4–20 mA TMR analog output module developed for Tricon V9 safety-related control systems. It provides DC-coupled current outputs with a common return and supports redundant external loop-power supplies. Triplicated processing and continuous diagnostics help maintain dependable operation in critical control loops.

Triconex 3805EN Analog Output Module

Product Type

Analog Output Module

System Platform

Tricon V9

Architecture

Triple Modular Redundant (TMR)

Number of Outputs

8

Output Configuration

DC-coupled, common return

Output Range

4–20 mA

Over-range Capability

2–21.2 mA

Resolution

12 bits

Output Accuracy

<0.25% of full-scale range, 0–60°C

Nominal Loop Power

+24 VDC

Maximum Loop Voltage

+42.5 VDC

Loop-Power Configuration

Redundant external sources

Load at >20 VDC

250 Ω

Load at >25 VDC

500 Ω

Load at >30 VDC

750 Ω

Load at >35 VDC

1,000 Ω

Leg-Failure Transfer Time

10 ms typical; 20 ms maximum

Module Indicators

PASS, FAULT, ACTIVE and LOAD

Loop-Power Indicators

PWR1 and PWR2

Key Features

Eight verified 4–20 mA current outputs for analog field devices.

TMR architecture supports fault-tolerant operation in safety-related applications.

Redundant external loop-power inputs improve power availability.

Individual power indicators show the presence of each loop-power source.

Continuous output feedback verifies commanded current values.

Automatic transfer between output legs maintains the signal if one leg fails.

Status indicators provide clear module, load and power information.

Applications

Emergency shutdown systems

Nuclear power safety applications

Process shutdown and interlock systems

Control-valve and actuator positioning

Turbine and compressor control

Oil and gas processing

Refining and chemical production

Power-generation facilities

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