Triconex 3481
Triconex 3481
Triconex 3481
Triconex 3481
Triconex 3481
Triconex 3481
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3481

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Schneider Electric Triconex 3481 is a four-channel 4–20 mA analog output module with 12-bit resolution. It provides supervised current commands to compatible process actuators.
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Technical specifications for 3481

  • Manufacturer:
    Invensys
  • Part Number:
    3481
  • Product Family:
    Tricon System
  • Product Type:
    Trident Analog Output Module
  • Stock:
    1
  • Output points:
    4
  • Signal range:
    4–20 mA
  • Overrange:
    6%
  • Output arrangement:
    Commoned
  • Resolution:
    12 bits
  • Diagnostic:
    Forced-switch diagnostic (FSD) External loop power (reverse voltage-protected) 32 V DC, maximum, 24 V DC, nominal.
  • Output loop power requirements for specified load:
    300 Ω @ >16 V DC (1 A minimum); 500 Ω @ >20 V DC (1 A minimum); 700 Ω @ >24 V DC (1 A minimum); 800 Ω @ >28 V DC (1 A minimum).
  • Over-range protection:
    36 V DC, continuous, 0 V DC, continuous.
  • Switch time on leg failure:
    1 ms, typical, 3 ms, maximum.
  • Functional-to-protective-earth isolation:
    500 V DC, minimum
  • Functional-to-functional-earth (logic) isolation:
    800 V DC, minimum
  • Weight:
    3.22 lbs (1.46 kg)
  • Estimated shipping dimensions:
    4.3 × 18.8 × 21.8 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Applications Performance Certifications Environmental Ratings

Features:

  • Provides analog command outputs for compatible Trident safety-controller systems.
  • Converts controller demand values into continuous field signals for final-control equipment.
  • Uses the channel, range and termination characteristics documented for model 3481.
The selected item is the Trident Analog Output Module identified by model 3481.

It supplies continuous controller commands to compatible actuators and analog interfaces in critical-process applications.

Confirm output range, load, loop supply, termination, fail state and chassis support before replacement.

Availability is subject to Apter Power inventory and sourcing confirmation.
Verified resources for Triconex 3481: Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Sends modulating commands to compatible valve positioners and other analog final elements.
  • Supports safety-related control strategies that require continuous rather than discrete outputs.
  • Provides an exact-model spare for installed analog-output circuits and their documented terminations.
  • Output behavior depends on the documented channel range, resolution and connected load conditions.
  • Loop performance should be checked across the commanded operating span after replacement.
  • Controller demand and measured field response should agree within the approved commissioning tolerance.
  • Use the module only within the functional-safety approvals of the complete Trident installation.
  • Hazardous-area suitability depends on approved field circuits, termination and enclosure practices.
  • Retain model, revision and proof-test records required by the site compliance plan.
  • Maintain the chassis within the specified ambient temperature and non-condensing humidity limits.
  • Protect analog wiring and electronics from conductive contamination and excessive vibration.
  • Preserve cabinet grounding, shielding and airflow defined for the approved system installation.
Description
Schneider Electric Triconex 3481 generates four commoned analog current outputs for positioning valves, setting drive references and commanding other compatible process devices. Its 12-bit conversion maps controller values into the documented 4–20 mA field range. The four-channel design gives each final-control loop a defined software command and physical termination while retaining the commoned architecture specified for the module.

Forced-switch diagnostics exercise the output paths while the controller monitors channel behavior. External loop power is reverse-voltage protected, and the module defines load-dependent supply requirements so the current signal can remain within its intended operating region. Combining conversion and diagnostic switching helps reveal internal output-path faults without treating a valid command value alone as proof that the field loop is healthy.

Before replacement, capture each channel scale, fail-state strategy and actuator response. The common reference, loop supply, terminal connections and permissible load must be verified independently, followed by a controlled stroke or signal test before service restoration. Commissioning should compare the requested and measured current at several points in the span and verify the real actuator response before automatic control is restored.
Alternative Names
Triconex 3481 3481 Analog Output Module 3481 Four-Channel Analog Output Schneider Electric 3481 Tricon 3481 4-20 mA Output 3481 12-Bit AO Module Invensys Triconex 3481 3481 Tricon Analog Output Card
Technical notes
Before changing Triconex 3481, force actuators to approved safe positions and record each loop scale; incorrect external supply can drive an unintended command.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How does 3481 check its outputs?
The module uses forced-switch diagnostics to test the output paths and expose abnormal channel behavior.
What powers the 3481 field loops?
Compatible external loop power is required and is protected against reverse voltage at the module.
Where is Triconex 3481 used?
It supplies controlled current references to valves, drives and other approved analog actuators.
Can a different analog output replace 3481?
Not without checking commoning, resolution, loop supply, load, diagnostics and terminal compatibility.
Which manual supports 3481 commissioning?
Use the official Tricon installation, wiring and maintenance documentation for the installed release.
What is needed to quote 3481?
Provide the label, terminal and loop-supply arrangement, actuator loads, quantity and destination.