ICS-TRIPLEX-T3411F
ICS-TRIPLEX-T3411F
ICS-TRIPLEX-T3411F
ICS-TRIPLEX-T3411F
ICS-TRIPLEX-T3411F
ICS-TRIPLEX-T3411F
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T3411F

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The T3411F is a monitoring digital input module designed specifically for safety-critical systems. It can monitor up to 16 digital input signals.
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Technical specifications for T3411F

  • Manufacturer:
    ICS Triplex
  • Part Number:
    T3411F
  • Product Family:
    (TMR) Processor
  • Product Type:
    Digital Input Module
  • Stock:
    7
  • Input Points:
    16 (common power)
  • Input Current:
    Maximum 8.0 mA (DC)
  • Power Supply:
    100 VDC Continuous
  • Input Field:
    100 VDC Continuous / 160 VDC (5 seconds)
  • Heat Dissipation:
    ~8.5 W (approx. 29 BTU/hour)
  • Isolation:
    ≥ 2,500 V (Fieldline to Control Logic)
  • Storage Temperature:
    –40°C ~ +85°C
  • Weight:
    1.4 kg
  • Estimated shipping dimensions:
    3.1x26.4x35.5cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, 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 Specifications Application Operating Environment Monitoring & Control

Features:

  • Utilizes 2oo3 (two-out-of-three) voting across three independent channels, ensuring system integrity without a single point of failure
  • Offers 16 monitored inputs with a fast scan and voting time of ≤40 ms, certified to TÜV Risk Class 5 (SIL 3)
  • Features continuous automatic line monitoring to detect open and short circuits, with high-visibility front panel LEDs for each point and module status
The T3411F is built upon the Trusted TMR (Triple Modular Redundancy) architecture, which is the cornerstone of ICS Triplex's fault-tolerant philosophy. In this design, three independent, isolated hardware channels operate in parallel for each of the 16 input points . A hardware-based 2oo3 (two-out-of-three) voting mechanism compares the results from these three channels. This design ensures that a single-point failure—whether in a processor, communication path, or power supply—cannot corrupt a critical signal or cause a nuisance trip.

The T3411F provides a highly dense I/O solution, integrating 16 monitored input points into a single 1.27-inch wide module . This high channel density significantly reduces the amount of rack space required for large-scale safety systems, simplifying cabinet layout and reducing overall system footprint. Despite this high density, the module delivers a deterministic and fast response time, with a scan and voting time of ≤40 ms .

A key feature of the T3411F is its comprehensive diagnostic capability, specifically designed to detect dangerous hidden faults in field wiring. The module performs continuous, automatic line monitoring, which actively tests the integrity of the external field wiring . This diagnostic function can detect open circuits (broken wires) and short circuits between conductors or to ground, which are common failure modes in industrial field devices. When a wiring fault is detected, the module immediately reports the condition to the safety logic solver and illuminates the corresponding front panel LEDs .

The T3411F ICS Triplex Digital Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

ICS Triplex T3411F Digital Input Module Manuals, Datasheets, Drivers, Link 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.
ICS Triplex T3411F Digital Input Module Specs

General

  • Manufacturer ICS Triplex
  • Model T3411F
  • Condition New Original ready stock
  • Product Family T7481A,T8151B,T8850C
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.
  • Safety Instrumented Systems (SIS): Serves as the primary sensing interface for emergency buttons, pressure switches, and safety interlocks.
  • Emergency Shutdown (ESD): Processes discrete trip signals from the field to trigger immediate, automated machinery shutdowns.
  • Fire and Gas Systems (F&G): Monitors discrete fire detectors, smoke sensors, and gas concentration switches.
  • Operating Temperature: 0°C to 60°C (32°F to 140°F).
  • Storage Temperature: -40°C to 85°C (-40°F to 185°F).
  • Relative Humidity: 0% to 95%, non-condensing.
  • Mechanical Robustness: Resists structural vibration (10 to 55 Hz, ±0.15mm) and operational shocks up to 15 g (half sine wave, 11 ms duration).
  • Wiring Intelligence: By pairing the module with an external line-monitoring resistor network installed at the field switch, the module reads nuanced voltage levels.
  • nternal Processor Testing: The host Regent processor modules continuously drive automated diagnostic cycles on the input circuits.
  • Stuck-On/Off Diagnostics: On a background interval (typically sub-2 seconds), internal digital-to-analogue converters (DACs) simulate extreme threshold voltages to verify that the internal comparators can cycle completely. This prevents dangerous "stuck-at" logic failures from going unnoticed.
  • High-Speed Input Processing: Features tight response timing with a maximum 10 ms turn-on/turn-off delay to register field transitions almost instantaneously.
Description
The T3411F is a Monitored Digital Input Module designed for safety-critical systems.

It can monitor up to 16 digital input signals and automatically diagnose open or short circuit faults in field wiring. This "Type F (field powered)" module is powered by the field (typically 24V or 48V DC) and is suitable for connecting various field devices such as switches, buttons, and sensors.

The T3411F is hot-replaceable, and front panel LEDs provide status indication, making maintenance and troubleshooting easier. Its high reliability and diagnostic capabilities make it a critical component in functional safety systems such as Triplex TMR or Regent systems.
Alternative Names
T3411 T3401 T3481A T3480 T34IIF T3420A T3310 T8431
Technical notes
The T3411F is a monitored digital input module for the Trusted TMR (Triple Modular Redundancy) safety system, providing 16 field-powered inputs (24-48 VDC) for SIL 3 applications . It features automatic line monitoring to detect open and short circuits, 2500V isolation, and fast 10ms response.
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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.
Is the T3411F field-powered or backplane-powered?
The T3411F is a Type-F module and requires a 24V or 48V DC power supply from the field.
Can T3411F detect open and short circuits?
Yes, it has automatic line monitoring capabilities and can detect open and short circuit faults.
Can the T3411F be replaced while the device is running?
It supports hot-replacement; replacement will not interrupt other input signals.
Is T3411F an external fuse?
The module does not have a built-in fuse. If necessary, an external fuse should be added by the system designer.

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