ICS Triplex |T3411F| Monitored Digital Input Module

Technical Overview

• Primary Function: The ICS Triplex T3411F is a high-integrity, field-powered monitored digital input module designed for the Trusted™ safety and control system platform.

• Problem Solved: It provides reliable monitoring for 24/48 VDC safety-critical sensors and switches, specifically engineered to distinguish between valid signal states and field-side wiring faults like open or short circuits.

• System Reliability: By utilizing an "F Type" (field-powered) architecture and integrated line monitoring, this module ensures maximum uptime in high-risk environments such as offshore oil platforms and chemical processing plants.

Detailed Technical Specifications

The T3411F is defined by its robust electrical isolation and fault-tolerant diagnostic capabilities:

• Model Number: T3411F

• Product Series: Trusted™ Safety System

• Input Configuration: 16 Monitored Input Points (Common Power)

• Field Power Voltage: 24/48 VDC (Operating range: 15 VDC to 90 VDC)

• Threshold Levels: Turn-on/Turn-off at 12 VDC (Default)

• Input Current: 8.0 mA maximum per point

• Response Timing: 10 ms maximum delay for both Turn-on and Turn-off

• Isolation Rating: 2500 V minimum (Field wiring to control logic safety bus)

• Over-Voltage Protection: 100 VDC continuous (Field power); up to 160 VDC for 5 seconds (Input terminals)

• Safety Certification: TÜV Certified, Risk Class 5 (Suitable for SIL 3 safety-critical inputs)

• Heat Dissipation: 8.5 Watts (Approx. 29 BTUs/hour)

• Physical Dimensions: 130 mm x 70 mm x 25 mm

• Net Weight: 200g (Module only) / 2000g (Shipping weight including protective packaging)

Key Engineering Features

• Triple Modular Redundant (TMR) Compatibility: Designed to operate within a TMR architecture, ensuring that a single internal failure does not result in a loss of the safety function or a nuisance trip.

• Continuous Line Monitoring: Automatically performs line testing and diagnostic checks approximately every 84.6 seconds, allowing for the immediate detection of field wiring abnormalities.

• Hot-Replaceable Architecture: Supports "Hot-Swap" functionality, allowing maintenance personnel to replace a faulty module while the system remains under power and the process stays online.

• Front Panel Visual Diagnostics: High-visibility LEDs provide real-time status indication for each of the 16 input points, as well as the overall health of the module.

• Robust Field Power Handling: The "Type F" design manages field power up to 450 mA, shielding the sensitive control logic from the electrical noise and surges typical of industrial field-side environments.