The Triconex T8451C is a high-availability digital output module from the Trident safety system. This module provides 32 isolated output channels for driving field actuators, solenoids, and annunciators in critical safety applications . It employs Triple Modular Redundancy (TMR) architecture, enabling fault-tolerant operation without process interruption .
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | 32-Point TMR Digital Output Module |
| Compatibility | Triconex Trident Safety System |
| Number of Channels | 32 isolated outputs |
| Output Type | Solid-state switches (source configuration) |
| Output Voltage | 24 V DC nominal (18–32 V DC range) |
| Maximum Output Current | 0.5 A per channel |
| Total Module Current | 4 A per common bus |
| Output Response Time | ≤ 3 ms from command to change-of-state |
| Power Consumption | 35 W maximum (external load excluded) |
| Isolation | 1500 V AC between channels and backplane |
| Dimensions (W x H x D) | 178 mm x 292 mm x 42 mm |
| Weight | Approx. 0.8 kg (1.8 lbs) |
| Operating Temperature | 0°C to 60°C |
| Protection Rating | IP20 |
Fault-Tolerant Architecture
The Triconex T8451C uses three independent output channels per point, each with its own processor and power path . This TMR design allows the module to continue normal operation even when one output circuit fails . The module performs automatic diagnostics, including open-wire detection and short-circuit protection on every scan cycle . It features full galvanic isolation between field wiring and the system backplane, ensuring robust noise immunity .
System Integration
Users install the Triconex T8451C in any Trident chassis slot and can hot-swap the module without system shutdown . The module reports diagnostics and status back to the main processor, enabling comprehensive system monitoring . Engineers typically use this module in burner management, emergency shutdown systems, and fire-and-gas applications . Additionally, its solid-state outputs deliver fast switching and long service life, reducing maintenance requirements .
Details
| Weight | 0.8 kg |
|---|---|
| Dimensions | 178 × 292 × 42 mm |
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