T8480 Product datasheet    

T8480 Functional Description 

The Rockwell ICS Triplex T8480C Analog Output is a Triple Modular Redundant (TMR) 24Vdc digital output module designed for mission-critical industrial control systems. Featuring 40 independent TMR channels, this module delivers fault-tolerant operation with SIL3 certification (IEC 61508) and comprehensive diagnostics. Each channel incorporates automatic line monitoring to detect open/short circuits in field wiring, while 2500V opto-galvanic isolation ensures protection against electrical surges. The ICS Triplex T8480C Trusted TMR Analog Output supports 1ms-resolution Sequence of Events (SOE) reporting, triggering timestamps for all output state changes to facilitate precise fault analysis.

As part of the Trusted® I/O family, the ICS TRIPLEX Digital Input Module T8480C interfaces with the Inter-Module Bus (IMB) for power and communication with TMR processors. Its hot-swappable design (via Companion/SmartSlot configurations) enables maintenance without system downtime, critical for continuous process industries. Front-panel LED indicators provide real-time channel status and module health (Active/Standby/Educated modes), while outputs are organized in isolated 8-channel Power Groups (PGs) with individual overcurrent protection – eliminating the need for external fuses.

The Digital Input Module ICS TRIPLEX T8480 24Vdc excels in harsh environments through its TMR voting architecture, where three independent processors validate all outputs. This design detects and compensates for stuck-on/stuck-off failures, maintaining system integrity even during component faults. Though not intrinsically safe, it integrates seamlessly with barrier devices for hazardous area applications. Typical deployments include emergency shutdown systems, turbine controls, and safety instrumented systems (SIS) requiring <1% downtime.

Engineered for reliability, the Trusted TMR Analog Output ICS Triplex T8480C shares the Trusted platform's standardized form factor and physical keying system to prevent incorrect chassis insertion. Its combination of millisecond SOE resolution, predictive diagnostics, and TUV-certified safety makes it ideal for oil/gas, power generation, and chemical processing. For industries demanding zero-compromise redundancy, this module sets the benchmark for high-availability digital output systems.