Description
ICS Triplex T8402 – Trusted TMR Processor Module for High-Integrity Control
The ICS Triplex T8402 is part of the Trusted safety system family, typically used as a Triple Modular Redundant (TMR) processor module in demanding ESD, F&G, BMS, and turbomachinery control applications. From my experience, teams choose the T8402 when they want SIL3-capable reliability with continuous diagnostics and online replacement, without redesigning their installed Trusted architecture. You might notice that it’s built for uptime—fault tolerance, powerful self-checking, and deterministic behavior under load are the main story here.
Company’s Order Placement Process and Guarantees
- Warranty: 365 days
- Delivery: 1 week for in-stock; no more than one month at the latest
- Payment: 50% advance payment, full payment for delivery
- Express options: FedEx, UPS, DHL
- Verification: Each unit is visually inspected and function-checked before dispatch
- Packaging: ESD-safe packing with shock protection, typically double-boxed
Key Features
- Triple Modular Redundancy (TMR): Three processing channels vote results for fault tolerance and high availability.
- SIL3-ready platform: When used within the ICS Triplex Trusted system, it supports IEC 61508 SIL3 safety functions.
- Extensive diagnostics: Continuous self-test, fault reporting, and status LEDs to shorten troubleshooting time.
- Hot-swap capability: Designed for online replacement to minimize production interruptions.
- Deterministic scan behavior: Predictable cycle times for safety and regulatory compliance.
- Backplane-centric architecture: No direct field I/O on the processor; all I/O is handled by Trusted I/O modules to keep processing isolated and robust.
- Rugged construction: Conformal coating and EMC-hardened design suitable for industrial cabinets.
- Lifecycle continuity: Compatible with the Trusted ecosystem; typically used to maintain installed-base consistency.
Technical Specifications
| Brand / Model | ICS Triplex Trusted / T8402 |
| HS Code | 8537.10 (Programmable controllers and control panels, ≤1000 V; final classification may vary by region) |
| Power Requirements | Powered via Trusted system backplane; no external field power connection on the module |
| Operating Temperature | Typically 0 to 60°C (consult the specific datasheet for exact limits) |
| Signal I/O Types | No direct field I/O; controls Trusted I/O modules via backplane |
| Communication Interfaces | Trusted system backplane; networking/engineering access provided through associated Trusted communications modules (system-dependent) |
| Installation Method | Installs in the processor slot of a Trusted chassis; keyed guides and retaining screws; hot-swap capable |
| Dimensions & Weight | Single-width Trusted module form factor (fits standard Trusted racks) |
Related or Supporting Products
- ICS Triplex T8403 – A later Trusted TMR processor that, in many cases, offers higher performance and memory. It’s a typical upgrade path when applications grow.
- ICS Triplex T8151B – Trusted power supply module used to feed the backplane; commonly deployed in redundant pairs for higher availability.
- Trusted I/O modules (AI/DI/DO families) – Field signal handling for the T8402 is achieved through Trusted I/O cards; selection depends on signal types and SIL targets.
- Trusted communications modules – Add Ethernet and other protocol interfaces for engineering access, peer-to-peer, or DCS integration.
A refinery customer told us they moved an aging TMR controller to T8402 without touching field wiring—kept the cabinet and I/O, downloaded the validated logic, and were back on-line in a single shift. That kind of drop-in continuity seems to be the main win for brownfield sites.
Installation & Maintenance
- Cabinet & environment: Install in a clean, dry, grounded control cabinet with adequate ventilation. Keep within the specified operating temperature and humidity range.
- Wiring practices: Separate power, signal, and communication cabling; maintain shield grounding and follow site EMC practices. Leave service loops for hot-swap.
- Backplane & slotting: Use the Trusted processor slot; ensure correct keying to avoid mismatched insertion.
- Redundancy procedures: For online replacement, verify healthy voting, quiesce the target channel, then swap the module. Observe ESD precautions.
- Routine maintenance: Review diagnostic logs periodically, confirm time sync and scan times, clear dust buildup, and verify firmware/application versions against your MOC records.
- Firmware management: Updates should be planned, validated offline, and applied during a maintenance window with proper rollback arrangements.
Quality & Certifications
- Functional safety: Supports IEC 61508 SIL3 when deployed within the ICS Triplex Trusted architecture and per certified design rules.
- Regulatory: Typically CE; UL/cUL compliance is common for Trusted modules. RoHS compliance applies to most later-batch units.
- Manufacturer warranty: Backed by our 365-day warranty policy from shipment.
If you’re replacing a legacy processor or planning a phased safety system upgrade, the T8402 keeps risk low and schedules predictable. Share your current rack and I/O list, and I can suggest a validated path—whether that’s a like-for-like T8402 deployment or moving to the T8403 where headroom is needed.
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