ICS TRIPLEX T8461C

Description

Product Description

Technical Parameters

1. Brand: ICS TRIPLEX
2. Model: T8461C
3. Device Type: TMR Digital Output Module for Safety-Critical PLC Systems
4. Operating Voltage: 24V DC (redundant stable power supply)
5. Operating Temperature Range: -40°C to +75°C
6. Maximum Current Consumption: 6A
7. Number of Digital Output Channels: 40 isolated channels (triple redundant configuration, divided into 5 independent power groups)
8. Output Signal Type: Dry contact, NPN/PNP (configurable)
9. Per-Channel Maximum Current: 2A
10. Per-Power-Group Current Limit: 8A
11. Protection Class (IP Rating): IP24
12. Housing Material: High-strength aluminum alloy (conformal coated for corrosion resistance)
13. Dimensions (L×W×H): 140mm × 90mm × 53mm
14. Warranty Period: 3 years
15. Power Consumption: ≤4.0W
16. Output Response Time: ≤0.5ms
17. Isolation Voltage: 2500V AC (channel-to-channel, channel-to-ground)
18. Safety Certification: IEC 61508 SIL 3, TÜV Rheinland, CE, UL

Advantages and Features

1. TMR Architecture for Uninterrupted Safety: ICS TRIPLEX T8461C adopts a core triple modular redundancy design with a 2-out-of-3 voting mechanism. This ensures that even if one of the three redundant signal paths fails, the module continues to output accurate control signals, eliminating production downtime and safety risks in critical applications such as emergency shutdown systems and reactor control.
2. High-Density Isolated Channels: With 40 isolated digital output channels divided into 5 independent power groups, ICS TRIPLEX T8461C offers exceptional integration density. This reduces the number of modules needed in control cabinets, optimizes space utilization, and minimizes cross-interference through independent power group design.
3. Strong Load Capacity & Protection: Each channel supports a maximum current of 2A, and each power group has an 8A current limit, enabling the module to drive multiple heavy-load actuators such as large valves and pumps. It also integrates short-circuit protection, open-circuit detection, and reverse polarity protection to extend the lifespan of the module and connected devices.
4. Extreme Environmental Resilience: The ruggedized design and conformal coated internal components allow ICS TRIPLEX T8461C to operate stably in a wide temperature range of -40°C to +75°C. It resists electromagnetic interference, humidity, and vibration, making it suitable for harsh scenarios like offshore oil platforms, chemical plants, and nuclear power facilities.
5. Easy Maintenance & Diagnostics: Built-in LED status indicators for each channel and a dedicated diagnostic port enable technicians to quickly identify fault points and perform troubleshooting. The module also supports hot-swappable installation, allowing for on-site maintenance without shutting down the entire system—greatly reducing operational downtime.

Application Cases in Various Industries

1. Oil and Gas Industry: In offshore drilling platforms and onshore oil refineries, ICS TRIPLEX T8461C delivers control signals to emergency shutdown valves, pipeline isolation valves, and pump actuators. Its TMR architecture and corrosion-resistant design ensure uninterrupted operation even in corrosive marine environments and extreme weather, safeguarding the safety of oil extraction and refining processes.
2. Chemical Industry: In large chemical production lines, the module controls reagent dosing pumps, reactor safety interlocks, and fire suppression system actuators. ICS TRIPLEX T8461C’s SIL 3 certification and short-circuit protection prevent industrial accidents caused by signal failures, ensuring compliance with strict chemical safety regulations.
3. Nuclear Power Industry: In nuclear power plants, ICS TRIPLEX T8461C outputs control signals to reactor coolant system valves, emergency core cooling system actuators, and containment pressure relief devices. Its high reliability and fault-tolerant design comply with strict nuclear safety standards, preventing potential hazards and ensuring stable reactor operation.
4. Power Generation Industry: In thermal and hydroelectric power plants, the module controls boiler feedwater valves, turbine speed regulators, and coal conveying system actuators. ICS TRIPLEX T8461C’s fast response time and high load capacity optimize power generation efficiency and maintain grid stability.
5. Pharmaceutical Industry: In pharmaceutical production facilities, the module controls material transfer pumps, sterilization equipment interlocks, and cleanroom safety gates. It complies with GMP and SIL 3 standards, ensuring the safety and quality of pharmaceutical products by maintaining precise control of critical production processes.

Comparison with Competitors

Selection Suggestions and Precautions

Selection Suggestions

1. Prioritize Safety-Critical High-Load Scenarios: With IEC 61508 SIL 3 certification, 40 high-load channels, and TMR architecture, ICS TRIPLEX T8461C is ideal for industries such as oil and gas, nuclear power, and chemical processing—where system failures could lead to severe safety hazards, environmental damage, or massive economic losses.
2. Check System Compatibility: If your existing control system uses ICS TRIPLEX Trusted series hardware (e.g., T8100 chassis, T8110B processor), ICS TRIPLEX T8461C will integrate seamlessly, reducing integration costs and ensuring consistent system performance.
3. Evaluate Channel and Load Needs: For projects requiring 30+ digital output channels and the ability to drive heavy-load actuators (e.g., large valves, pumps), the module’s 40-channel design and 2A per-channel current capacity eliminate the need for multiple modules, optimizing control cabinet space.
4. Consider Extreme Environment Requirements: For equipment installed in extreme temperatures (below -30°C or above +60°C) or high-interference industrial sites, the module’s ruggedized design and anti-interference capability provide long-term reliability superior to competitors.

Precautions

1. Installation by Certified Technicians: Installation, wiring, and configuration of ICS TRIPLEX T8461C must be performed by certified technicians with experience in ICS TRIPLEX safety systems. This ensures compliance with SIL 3 requirements and avoids configuration errors that may compromise system safety.
2. Confirm Redundant Power Supply: The module relies on 24V DC redundant power. Ensure the power supply system is properly configured with backup units to prevent signal loss due to single power source failure and avoid voiding the warranty.
3. Avoid Exposure to Corrosive Substances: Do not expose ICS TRIPLEX T8461C to direct water, corrosive gases, or abrasive materials, even though it has an IP24 protection rating and conformal coating. This preserves the integrity of the isolation circuits and internal components.
4. Regular Calibration and Diagnostics: Conduct regular maintenance (at least once every six months) in accordance with the manufacturer’s guidelines. Check channel status via LED indicators, test short-circuit protection functions, and update firmware to maintain SIL 3 compliance and stable performance.
5. Use Genuine Spare Parts: For repairs or replacements, use only genuine ICS TRIPLEX spare parts. Non-genuine components may violate safety certifications and lead to system malfunctions in critical scenarios.

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