PLC/DCS module
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Contact: YMGK Industrial Control
Phone: +86 18059884790
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- Brand:TRICONEX
- Part number:TRICONEX 3721
- Product Origin:America
- Weight:1.3KG
- HS CODE:8708299000
- RMB Market price:20000-30000
- Warehouse: Spot
- Warranty: 365 days
- Quality: Original module
- Condition: New
- Shipping method: Courier delivery
- Contact person: LI MING
- Contact number: +86 18059884790
- WeChat:18059884790
- E-mail: plc66@qq.com
TRICONEX 3721 Redundant Communication Module
The TRICONEX 3721 is a high-reliability redundant communication module designed for Triconex safety instrumented systems (SIS) and critical control platforms. As a key connectivity component in Emerson’s Triconex product line, it enables secure, high-speed data exchange between the Triconex controller, I/O modules, and plant-wide automation systems (SCADA, DCS, MES). Built with dual-redundant architecture, it ensures uninterrupted communication even in fault conditions, supporting the safety and availability of mission-critical industrial processes.

Key Technical Specifications
- Architecture: Dual-redundant (2-channel) design with automatic failover for communication continuity
- Communication Protocols: Supports Modbus TCP/RTU, DNP3.0, IEC 61850, PROFINET IO, Ethernet/IP, and Triconex proprietary protocols
- Network Interfaces: 4x Gigabit Ethernet ports (RJ45); 2x RS-485 serial ports (for Modbus RTU); Optional fiber optic ports for long-distance communication
- Data Transfer Rate: Up to 1 Gbps (Ethernet); 115.2 kbps (serial ports)
- Compatibility: Works with Triconex Tricon, Trident, and 3503E controllers; Supports Triconex 3000/3600/3700 series I/O modules
- Power Requirements: Powered via Triconex controller backplane (24 VDC ±10%); Power consumption: Max 15 W
- Operating Temperature: -40°C to +70°C (-40°F to 158°F); Humidity: 5% to 95% (non-condensing)
- Dimensions (H x W x D): Approx. 160 mm x 100 mm x 220 mm; Rack-mount design for Triconex standard cabinets
Safety Certifications: IEC 61508 SIL 3, IEC 61511 SIL 3, CE, UL 508 compliant

Core Features
Redundant Communication Paths
Dual-redundant channels with real-time monitoring and automatic failover. If one channel detects a fault, communication seamlessly switches to the standby channel, eliminating downtime.
Multi-Protocol Support
Integrates with diverse industrial networks via standard protocols, enabling interoperability with third-party SCADA systems, DCS, and plant-wide automation platforms.
High-Speed Data Transfer
Gigabit Ethernet ports deliver fast, deterministic data transmission for time-critical safety signals and process data, ensuring real-time responsiveness in control loops.
Advanced Diagnostics
Built-in diagnostics monitor network status, protocol performance, and module health. Fault alerts and performance data are transmitted to the controller for remote troubleshooting.
Cybersecurity Features
Equipped with role-based access control (RBAC), secure firmware updates, and protocol encryption (where supported) to mitigate industrial cyber risks and comply with IEC 62443 standards.

Typical Applications
Oil & Gas Industry
Facilitates communication between ESD systems, fire and gas detectors, and SCADA in drilling platforms, pipelines, and refineries—ensuring critical safety data is transmitted reliably.
Chemical & Petrochemical Plants
Connects safety controllers to process DCS, enabling coordinated control of hazardous material handling, reactor safety, and emergency isolation systems.
Power Generation
Integrates turbine protection systems, boiler safety controllers, and grid management platforms—supporting real-time data exchange for stable power generation.
Pharmaceutical & Food Processing
Links safety controllers to quality control systems and regulatory compliance platforms, ensuring data integrity for FDA/GMP-compliant processes.

Note: For detailed protocol configuration, compatibility matrices, and technical support, refer to Emerson’s official TRICONEX 3721 documentation or contact Emerson Industrial Automation services. Specifications are subject to change without prior notice.
YMGK Purchase Information
Browse the YMGK website to address issues that customers are more concerned about, including purchasing details. YMGK offers one-stop global industrial product procurement.
Contact Information
- Sales Manager: KI MI
- WeChat: 18059884790
- WHATSAPP: +86 18059884790 (Click to add)
- Email: plc66@qq.com
Core Advantages
- 121 shared inventories worldwide, with direct procurement from overseas warehouses.
- Provide favorable prices and professional after-sales warranty services.
- All products are brand new and original; spare parts come with a one-year warranty and have been tested and certified.
- For orders of more than one product, contact us to get an exclusive discount.
- If other suppliers offer lower prices for the same products, we are willing to provide further discounts based on your budget.
Customer Distribution
Our customers are from: United States, Germany, Japan, South Korea, United Kingdom, France, Italy, Canada, Brazil, India, Australia, Russia, Spain, Netherlands, Switzerland, Sweden, Belgium, Austria, and Turkey.
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