Manufacturer: ICS Triplex Part number: ICS Triplex T3480
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The T3480 serves as a critical output interface in safety instrumented systems (SIS) within the Trusted TMR (Triple Modular Redundancy) platform. This module functions as the final control element interface, converting processed safety logic decisions into reliable 24V DC output signals that actuate field devices such as solenoid valves, motor starters, and shutdown actuators. Its position in the automation architecture is at the critical junction where the safety system’s decisions are physically executed in the process.This digital output module handles discrete control signals with three independent processing paths for each output channel. The core functionality involves receiving commands from the Trusted TMR processors through the backplane, then driving the output circuits to control field devices. Each output channel is processed through three separate circuits that operate simultaneously, with continuous comparison and voting to ensure signal integrity.As part of the Trusted TMR product family, this module benefits from the platform’s certified safety architecture. The system is TÜV certified to IEC 61508 SIL 3 and designed for applications requiring the highest levels of safety availability. The platform’s hardware-based redundancy approach ensures that single component failures do not compromise system operation, providing continuous protection even during maintenance or repair activities.
T3480: Technical Specifications
Model Number: T3480
Manufacturer: ICS Triplex (Rockwell Automation)
Product Type: Digital Output Module
Output Voltage: 24V DC nominal
Output Current: 2A per channel maximum
Architecture: Triple Modular Redundancy (TMR)
Isolation: 1500V RMS channel-to-channel and channel-to-backplane
Operating Temperature: -40°C to +70°C
Storage Temperature: -55°C to +85°C
Safety Certification: TÜV certified to IEC 61508 SIL 3
Triple Modular Redundancy Architecture: The module’s TMR design provides three independent processing paths for each output channel, ensuring continuous operation even during component failures. For operations and maintenance teams, this architecture eliminates single points of failure at the I/O level, preventing spurious trips that can cause costly process shutdowns. The system’s ability to continue operating with two healthy paths while alerting maintenance to repair needs significantly improves overall system availability and reduces unplanned downtime.Comprehensive Diagnostic Capabilities: Continuous monitoring of output circuits and internal component health provides maintenance teams with precise fault location information. The module detects field wiring faults, output circuit failures, and internal processing errors. These diagnostics reduce mean time to repair by quickly identifying faulty components, while the hot-swap capability allows for module replacement during planned maintenance windows without process interruption.Environmental Robustness: The wide operating temperature range and robust construction ensure reliable performance in extreme industrial environments. For engineers designing systems for harsh locations such as offshore platforms or desert installations, this environmental tolerance reduces the need for specialized climate control systems, lowering both initial installation costs and ongoing maintenance requirements. The module’s construction meets industrial standards for vibration, shock, and electrical noise immunity.
ICS Triplex T8403C
Typical Applications
In emergency shutdown systems for offshore oil and gas platforms, this digital output module controls critical safety devices including emergency shutdown valves, fire pump starters, and deluge system actuators. The triple redundancy ensures that shutdown commands are executed reliably even if individual output circuits fail, while the SIL 3 certification provides the necessary safety integrity level for personnel and environmental protection.For gas turbine protection systems, the module interfaces with fuel shutoff valves, compressor bleed valves, and turbine seal oil pumps. The high reliability and diagnostic capabilities help maintenance teams identify developing issues during routine testing, preventing unplanned turbine trips that can result in significant revenue loss and equipment damage. The module’s fast response time ensures critical protection functions activate within required safety time limits.In pipeline compressor station applications, the digital output module controls emergency shutdown valves, station blowdown valves, and fire protection system actuators. The wide operating temperature range ensures reliable operation in unmanned remote stations, while the comprehensive diagnostics provide early warning of developing issues, allowing for planned maintenance during normal operations rather than emergency repairs during critical situations.
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