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3623T Other Names:
120VDC Monitored DO Module 3623T
3623T Monitored Digital Output Module
Core Technical Features
TMR Architecture and Safety: Employs a triple-modular redundancy design, with a built-in 32-bit RISC processor, supporting a 2oo3 (Two out of Three) voting mechanism to ensure safe system operation even in the event of a single module failure. Complies with IEC 61508 SIL3 safety level and TÜV certification, suitable for explosive environments (ATEX certified), meeting the stringent safety requirements of high-risk industries such as petroleum, chemical, and nuclear power.
Hardware and Communication Capabilities: Standard configuration includes 8MB Flash program memory and 8MB SRAM data memory (with battery backup), supporting hot-swapping and in-circuit programming. Communication interfaces include TriBus high-speed bus (inter-module communication), Ethernet (OPC/monitoring), RS-232 (programming and diagnostics), and a dedicated I/O bus, compatible with Modbus TCP/IP, RS-485, and other protocols.
Redundancy Design: TMR architecture (triple modular redundancy), using a 2oo3 (two-out-of-two) voting mechanism to achieve fault shielding, supporting hot-swapping and in-circuit programming, ensuring seamless system switching in the event of a single module failure.
Communication Interfaces: TriBus high-speed bus (inter-module communication), Ethernet (10/100Base-TX, supporting OPC/monitoring), RS-232 (programming and diagnostics), and a dedicated I/O bus.
Electrical Characteristics: 120VDC/24VDC power supply selectable, isolation voltage 1500VDC/2500VDC, maximum current per channel 0.8A, supports quadruple output switching for enhanced fault tolerance. Safety Rating: Compliant with IEC 61508 SIL3 certification, and meets international standards such as TÜV, ATEX, and CSA. Suitable for explosive gas environments (Ex ia IIC T6).
Features
Fault Diagnosis and Maintenance: Built-in self-diagnostic function, real-time monitoring of CPU status, memory integrity, power supply voltage and temperature, supports thermal synchronization and fault recovery, and LED status indicators intuitively display operating status.
Programming and Compatibility: Programmable via TriStation 1131 software (compatible with IEC 61131-3 standard, supports ladder diagrams, function block diagrams, etc.), can work collaboratively with Triconex 3500/40M, 3500/65 frameworks, and integrated into DCS/PLC systems (such as DeltaV, Ovation).
Application Expansion: Supports Modbus TCP/IP and RS-485 protocols. It can be paired with the 3500/22 TDI module for data acquisition, or connected to System 1 status monitoring software via the 3500/92 communication gateway for historical trend analysis and predictive maintenance.
Functional Positioning and Module Type
3623T Module Attributes: According to search results, the 3623T is primarily used as a triple-processor CPU module, belonging to the main processor unit of the Tricon safety controller. It is responsible for executing logic programs, monitoring sensor signals (such as pressure, temperature, and liquid level), and triggering protective actions (such as emergency shutdown and valve control). Its design emphasizes high reliability, real-time performance, and fault tolerance, rather than being directly used as an analog input module.
Analog Input Module Correlation: Analog input functions in the Triconex system are typically implemented by dedicated AI modules (such as the AI3351), while the 3623T, as a CPU module, works in conjunction with these modules through an integrated I/O bus. If the user mentions “analog input module,” the specific model (e.g., AI3351) or the extended configuration of the 3623T must be confirmed.
Application Scenarios and Industry Adaptation
Core Application Areas: Widely used in industries such as oil and gas (wellhead control, pipeline monitoring), chemical industry (reactor safety interlocks), power (turbine/generator protection), metallurgy (rolling mill control), and nuclear power (safety-grade DCS). Typical scenarios include emergency shutdown systems (ESD), fire and gas detection (F&G), turbine control, and compressor surge protection.
Performance Advantages: Stable operation in harsh environments such as high temperature, high humidity, and high vibration; supports rapid response (scan cycle 50-200ms), ensuring accurate monitoring and fault prevention of key process parameters (such as temperature, pressure, and flow rate).
System Integration and Expansion Capabilities
Framework Compatibility: Requires use with the Tricon safety system framework (e.g., the 3500/05 mainframe) and power modules (e.g., the 3500/15 redundant power supply). Supports integration with I/O modules (e.g., AI/AO/DI/DO), communication gateways (e.g., the 3500/92 Modbus gateway), and display devices (e.g., the 3500/93 operator panel).
Software Support: Programmed via TriStation 1131 software, supporting multiple languages including ladder diagrams (LD), function block diagrams (FBD), and structured text (ST) according to the IEC 61131-3 standard, enabling flexible configuration of logic control and data acquisition.
Expansion Capabilities: Supports HART protocol communication, allowing access to intelligent field devices; enables high-speed data exchange between modules via the TriBus bus; supports star or serial I/O rack expansion, adapting to system requirements of different sizes.
Summary and Clarification
The TRICONEX 3623T is essentially the main processor module of a triple safety controller, not a direct analog input module. Its core value lies in providing a highly reliable decision-making center for industrial safety systems through its TMR architecture and SIL3 certification. To implement analog input functionality, it needs to be combined with a dedicated AI module (such as AI3351) or the I/O expansion scheme in the system configuration needs to be confirmed.
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