Triconex A9A26924 Modular Safety I/O Control Module

Technical Specifications Input Channel Quantity: 16 digital input channels Output Channel Quantity: 16 relay output channels Input Rated Voltage: 24 VDC Output Type: Electromagnetic relay contact output Power Supply Range: 85‑264 VAC Operating Temperature: ‑40 °C to +70 °C Storage Temperature: ‑50 °C to +85 °C Relative Humidity: 5%‑95%, non‑condensing Communication Interface: RS‑485, Modbus RTU protocol Certifications: UL, CE, IEC 61508 SIL3 Power Consumption: 12 W Weight: 1.35 kg

Functional Features Integrated 16‑channel digital input and 16‑channel relay output in single module unit. Each input channel has independent surge suppression and noise filtering circuit. Relay output contact supports safety‑critical on‑off control for field actuators. Built‑in channel self‑diagnosis function detects input signal fault and relay contact abnormality. Hot‑swap capable; module replacement does not shut down whole safety system. Supports Modbus RTU communication for data interaction with upper monitoring equipment. Module status LED indicators show working condition of each input‑output channel. Channel‑level electrical isolation reduces interference coupling between different loops.

Application Scenarios Digital signal collection and relay output control for petrochemical plant safety interlock cabinet. Switch state monitoring and actuator control for oil‑gas field safety control system. Interlock logic execution for chemical industry burner management and emergency shutdown system. Safety‑related discrete control loops of power generation plant auxiliary equipment. Refinery F&G system on‑site device signal acquisition and output driving.

Performance Parameters Input Signal Acquisition Speed: High‑speed sampling for discrete switching signal Relay Output Mechanical Life: Millions times of switching cycles under rated load Channel Fault Detection Speed: Rapid response for channel open‑circuit and short‑circuit fault Anti‑Interference Performance: Withstands industrial‑site surge and electromagnetic noise Safety Integrity Level: Meets SIL3 system application requirement

Material Composition Main Circuit Board: Conformal‑coated multi‑layer industrial printed circuit board Housing: Flame‑retardant metal‑reinforced plastic housing Input Circuit Components: Surge‑suppression and filter electronic components Output Unit: Industrial electromagnetic relay assemblies Back‑plane Connector: Gold‑plated high‑reliability back‑plane contact connector Indicator Component: High‑brightness status LED set

Structural Characteristics Standard single‑slot rack‑mount modular structure for Tricon system chassis. Front panel equipped with channel‑status LED indicator array. Back‑plane edge connector directly mates with system chassis back‑plane bus. Internal independent compartment layout separates input circuit and relay output circuit. Built‑in locking mechanism fixes module onto chassis slot firmly against vibration.

Working Principle Field switching status signals enter module digital input channels. Internal signal conditioning circuit filters noise and converts field signal into digital logic signal. Module transmits collected input status data to Tricon main processor through chassis back‑plane bus. After safety logic calculation, main processor sends control command back to this module. Corresponding relay inside module executes contact pull‑in or release action to drive field actuators. Built‑in diagnosis circuit continuously monitors channel working state and uploads fault information to system.

Installation Requirements Insert module into designated slot of standard Tricon system chassis and fasten front‑panel locking mechanism. Supply rated 85‑264 VAC working power for module according to wiring specification. Connect field input and output signal wires to matched external termination assembly. Complete module back‑plane bus connection through chassis internal back‑plane. Arrange power cables and signal cables with separate routing paths in cabinet. Guarantee cabinet internal ventilation and keep ambient temperature within rated operating range.