ICS Triplex T3441A

ICS Triplex T3441A

Product Brief Introduction: T3441A is triple‑modular‑redundant discrete output module for Regent‑Plus safety platform. It converts safety logic digital commands from processor module into field‑side on‑off drive signals, controls solenoid valves, safety relays and field actuators. It executes safety‑related trip and interlock output commands for safety instrumented systems.

Request Quote
Category:

Description

ICS Triplex T3441A

Technical Specifications & Performance Parameters:

  • Power Supply: 20 V DC ~ 32 V DC backplane power supply, nominal 24 V DC
  • Channel Count: 16 digital output channels
  • Output Signal Type: 24 V DC discrete output
  • Per‑Channel Continuous Drive Capacity: 0.5 A
  • Per‑Channel Peak Current: 1.2 A
  • Response Time: ≤1 ms
  • Operating Temperature: ‑40 °C ~ +70 °C
  • Storage Temperature: ‑40 °C ~ +85 °C
  • Safety Certification: TÜV IEC 61508 SIL 3
  • Maximum Power Consumption: 18 W
  • Weight: 1.04 kg
  • Form Factor: Standard Regent‑Plus rack plug‑in module

Functional Features:

  • TMR triple redundant drive circuit for each output channel, hardware 2‑out‑of‑3 voting for output command
  • Channel‑level load diagnostics, detect field load open‑circuit, short‑circuit and abnormal loop impedance
  • Per‑channel hardware over‑current protection, automatically cut‑off channel under short‑circuit condition
  • Hot‑swap support, online module replacement without interruption of system safety logic execution
  • Configurable fail‑safe output state under module or channel fault condition
  • Front‑panel LED array indicates channel output state, module running status and fault alarm
  • All channel‑level fault messages attach high‑precision timestamps and upload to system fault historian
  • Galvanic isolation separates field output loop and internal safety backplane bus
  • Supports external fault‑relay dry‑contact output for upper‑level alarm system linkage

Working Principle: Safety processor sends digital output command through backplane bus to T3441A. Three independent drive sub‑circuits receive identical command signal. Hardware voting circuit validates command and drives corresponding field output channel. Built‑in monitoring circuit continuously samples output‑loop current and impedance value. When short‑circuit or open‑circuit fault occurs on field wiring or actuator load, module triggers fault flag and activates hardware over‑current protection. Single drive sub‑circuit failure gets isolated automatically, remaining valid sub‑circuits maintain correct output state after voting calculation.

Material Composition & Structural Characteristics:

  • Housing: Die‑cast aluminum alloy shielding shell, suppress electromagnetic interference impact
  • Circuit board: Multi‑layer FR‑4 industrial printed circuit board, integrate power drive and protection semiconductor components
  • Backplane connector: Gold‑plated high‑density vibration‑resistant connector
  • Front panel: Flame‑retardant engineering plastic with LED indicator group, IP20 protection grade
  • Card‑type plug‑in structure for Regent‑Plus rack slot installation

Installation Requirements:

  • Insert module into dedicated digital‑output slot of Regent‑Plus rack chassis, fasten front‑panel locking screws
  • Field output wiring adopts shielded cables, separate routing from high‑voltage AC power cables
  • Cabinet protective ground resistance ≤4 Ω
  • Cabinet ensures adequate air flow for heat dissipation
  • Field actuator load parameters must match per‑channel drive capacity specification
  • Avoid over‑load equipment direct connection to output channels
  • Cable shielding layer single‑end connects to cabinet ground bar

Application Scenarios:

  • Solenoid valve driving for petrochemical emergency shutdown systems
  • Fire‑gas suppression system relay actuation control
  • Chemical reactor safety interlock on‑off control
  • Power plant auxiliary equipment safety trip output
  • Off‑shore platform safety instrumented system field actuator control

Usage Notes:

  • Hot‑swap operation is permitted only under normal system health condition
  • Do not disassemble module outer shell; no maintainable internal parts for field personnel
  • Strictly follow per‑channel current limit specification, prohibit over‑load driving
  • Prevent field‑side short‑circuit from damaging output drive circuits
  • After module replacement, verify every channel output action and fault‑diagnosis response
  • Operate within rated operating temperature range
  • Regularly inspect field actuator coil insulation and terminal connection tightness

Related products