Description

Triconex 3805E TMR Analog Output Module

Product Overview

• Triconex 3805E is a Triple Modular Redundant (TMR) analog output module.
• It provides 8 non-isolated output points with commoned return.
• Each channel delivers 4-20 mA with +6% overrange capability.
• This module ensures high fault tolerance for safety-critical processes.
• Ideal for emergency shutdown (ESD) and fire & gas systems.

Key Features & Benefits

• TMR architecture – continues operation even with one leg failure.
• Switch time on leg failure < 10 ms typical.
• Output accuracy <0.25% of FSR (0-21.2 mA) from 32°F to 140°F.
• 12-bit resolution for precise analog control.
• Continuous over-range protection up to +42.5 VDC.
• Color code: Pea green for easy identification.
• Works with Basic Termination Panel 9853-610F.

Technical Specifications

• Brand: Triconex
• Model: 3805E
• Type: TMR Analog Output Module
• Output range: 4-20 mA (+6% overrange, 0-21.2 mA FSR)
• Number of outputs: 8 points, commoned return, DC coupled
• Resolution: 12 bits
• Accuracy: <0.25% FSR (0-21.2 mA) at 32-140°F (0-60°C)
• Over-range protection: +42.5 VDC continuous
• Loop power requirement (nominal +24 VDC, max +42.5 VDC):
  • 250 Ohm load -> >20 VDC, 1A min
  • 500 Ohm load -> >25 VDC, 1A min
  • 750 Ohm load -> >30 VDC, 1A min
  • 1000 Ohm load -> >35 VDC, 1A min
• Switch time (leg failure): <10 ms typical
• Diagnostic LEDs: PASS, FAULT, ACTIVE, LOAD, PWR1, PWR2

Installation & Maintenance

• Install in Triconex chassis with termination panel 9853-610F.
• Use external loop power (24 VDC nominal, reverse voltage protected).
• Hot-swappable design – replace without system shutdown.
• Easy maintenance with front LED diagnostics for quick fault checking.
• No special tools needed for module removal or insertion.

Compatibility & Certifications

• Fully compatible with Triconex TMR systems (main chassis).
• Works with Basic Termination Panel 9853-610F.
• Supports Modicon Quantum integration via standard analog signals.
• Certified for safety-critical applications (TÜV suitable for SIL 3).
• Meets industrial standards for EMC and environmental stress.

Typical Applications

• Emergency Shutdown (ESD) Systems – valve position control.
• Fire & Gas Systems – actuator output modulation.
• Turbine control – 4-20 mA positioning signals.
• Offshore and onshore oil & gas platforms.
• Chemical plants requiring high availability analog outputs.

Diagnostic Capabilities

• PASS LED – module self-test OK.
• FAULT LED – internal or field wiring issue.
• ACTIVE LED – output loop energized.
• LOAD LED – overcurrent or short circuit.
• PWR1 & PWR2 – status of dual external loop supplies.
• Automatic leg fault detection with <10 ms switchover.

Frequently Asked Questions

• Can I use this module in a non-TMR chassis?
  No. 3805E requires a Triconex TMR main chassis.
• What happens if one output leg fails?
  The module switches to backup legs in <10 ms. Output continues without interruption.
• Does it support HART protocol?
  No. This is a standard 4-20 mA module without HART.
• Is the output isolated from logic?
  No. Outputs share a common return and are DC coupled.
• My FAULT LED is on. What should I check first?
  Check external loop power (PWR1/PWR2) and field wiring for shorts.
• What load range works best?
  250-750 Ohm with 24-30 VDC loop power. Higher loads need >35 VDC.

Selection Guide

• Choose 3805E when you need 8 TMR analog outputs with common return.
• For isolated outputs, consider other Triconex models (not 3805E).
• Confirm loop power: +24 VDC nominal, minimum 1 amp per module.
• Match termination panel: 9853-610F basic panel required.
• If ambient temperature exceeds 60°C, add cooling or relocate the chassis.
• Need HART? Use Triconex 3806E HART model instead.
• For very high loop resistance (>750 Ohm), provide >30 VDC external supply.

Packing List & Warranty

• 1 x Triconex 3805E TMR Analog Output Module
• Product documentation download card (no printed manual)
• 12-month warranty from shipment date. Covers manufacturing defects.
• Warranty excludes damage from wrong wiring, over-voltage, or physical abuse.

Shipping & Delivery

• We ship via FedEx, UPS, or DHL – global express services.
• Tracking number provided within 24 hours after dispatch.
• Typical transit: 3-7 business days worldwide.

For inquiries or purchase support: +86 158 8020 0923 (WhatsApp)

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