• Core Function: Provides I/O Link communication between ControlEdge C300 controllers and remote I/O modules, enabling bidirectional data exchange and power distribution for distributed control architectures.
• Key Specs: 2 channels, supports Honeywell I/O Link protocol, 2500VAC isolation, 24V DC power input, -40°C to +70°C operating temperature, SIL 2 certified, hot-swappable design.
Manufacturer: Honeywell Part number: Honeywell TC-IOLI01 51403427-125
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TC-IOLI01 51403427-125: Product OverviewThe TC-IOLI01 (Product Number 51403427-125) is an I/O Link interface module engineered for Honeywell’s ControlEdge™ C300 distributed control system (DCS). It serves as a dedicated communication bridge between C300 controllers and remote I/O modules (e.g., digital/analog I/O, communication adapters) in distributed architectures. Its primary role is to manage high-speed data transmission and power distribution across the I/O Link network, ensuring reliable connectivity between the controller and field devices—essential for applications where distributed sensing/actuation and minimal cabling complexity are prioritized, such as large-scale refineries, chemical plants, and power generation facilities.Functionally, the module implements Honeywell’s proprietary I/O Link protocol, supporting dual-channel redundant communication with automatic failover. It processes control signals (e.g., setpoints, status updates) and diagnostic data (e.g., I/O module health, link integrity), while providing isolated 24V DC power to remote I/O racks. As part of the ControlEdge C300 family, the TC-IOLI01 51403427-125 integrates with the platform’s high-speed I/O link, hot-swappable architecture, and unified engineering tools (ControlEdge Builder), simplifying configuration and maintenance. This design aligns with compliance to IEC 61508 (SIL 2) and industrial standards, making it suitable for continuous process environments requiring robust distributed I/O connectivity.
Honeywell TC-IOLI01 51403427-125
TC-IOLI01 51403427-125: Technical Specifications
• Model Number: TC-IOLI01 51403427-125
• Manufacturer: Honeywell
• Product Type: I/O Link Interface Module
• Bus Protocol: Honeywell I/O Link (proprietary, for C300 controller-remote I/O communication)
• Number of Channels: 2 (redundant, independent operation)
• Power Supply: 24V DC (nominal, 18-30V DC range) from C300 chassis
• Power Consumption: 2.5W (typical, dual channels active)
• Certifications: SIL 2 (IEC 61508), CE, UL, ATEX Zone 2 (optional)
• Dimensions: 25mm x 128mm x 115mm (width x height x depth, fits C300 I/O slot)
• Weight: 0.21kg
• Diagnostics: Link status (tx/rx), CRC errors, port fault, power monitoring, redundancy state
• Hot Swap Support: Yes (plug-and-play replacement without system shutdown)
Honeywell TC-IOLI01 51403427-125
Core Features & Customer ValueRedundant Channel Architecture Ensures Uninterrupted Connectivity: The TC-IOLI01 51403427-125’s dual-channel design automatically switches to a secondary path if the primary I/O Link fails (e.g., cable break, connector fault), with no data loss during transition. For engineers, this eliminates single-point communication failures in critical systems like offshore platform distributed I/O, where downtime could disrupt wellhead control. Maintenance teams benefit from reduced troubleshooting—no manual reconfiguration is needed after a channel failure.Galvanic Isolation Protects Against Electrical Noise: With 2500VAC isolation between channels and the C300 bus, the module prevents ground loops and EMI from industrial equipment (e.g., VFDs, motors) from corrupting data. In a chemical plant’s remote pump station, this ensures reliable transmission of I/O Link commands to pump controllers, avoiding false trips caused by nearby agitator noise.Seamless Integration with ControlEdge Ecosystem: As a native C300 I/O component, the TC-IOLI01 51403427-125 is configured via ControlEdge Builder, which auto-detects remote I/O profiles for plug-and-play setup. This reduces engineering time by 30% compared to third-party gateways. For a water treatment plant upgrading its DCS, reuse of existing I/O Link remote racks with the TC-IOLI01 avoids costly hardware replacements.Hot-Swappable Design Minimizes Downtime: The module can be replaced while the system remains powered, a key feature for continuous processes like oil refining. Technicians simply remove the faulty unit and insert a new one; the C300 controller automatically re-establishes I/O Link communication. This avoids scheduled shutdowns for maintenance, saving thousands in lost production per incident.SIL 2 Certification for Safety-Critical Applications: Certified to SIL 2 (IEC 61508) with a probability of failure per hour (PFDavg) <1E-8, the TC-IOLI01 51403427-125 is suitable for safety functions like remote emergency stop monitoring. Its fault-tolerant design aligns with audit requirements for API 556 and ISO 10418, reducing compliance risks.Typical ApplicationsThe TC-IOLI01 51403427-125 is deployed in distributed control systems requiring I/O Link connectivity. In a petroleum refinery’s remote tank farm, it links a C300 controller to 4 I/O Link remote racks (each with 16 digital inputs for level switches, 8 analog outputs for valve control). The dual-channel redundancy ensures communication continuity if a cable is damaged during maintenance, preventing accidental overfill.At a chemical plant’s ethylene cracker, the module interfaces with C300 safety controllers and remote fire/gas detectors (via I/O Link adapters). Its -40°C cold-start capability supports outdoor installations near the cracker, while SIL 2 certification validates its use in NFPA 72-compliant fire suppression interlocks.In a coal-fired power plant’s boiler protection system, the TC-IOLI01 51403427-125 connects the C300 controller to remote I/O modules monitoring drum level switches and soot blower interlocks. Hot-swap support allows technicians to replace a faulty module during a planned outage, avoiding boiler shutdown.
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