Model Interpretation

3008: High‑End TMR Main Processor (MP), SIL3

P/N: 3008 (base)

Compatibility: Tricon v10.0–v11; 8110/8111/8112 chassis; hot‑swappable

Key Upgrade: 50 MHz MPC860, 16 MB DRAM, 25 Mbps TriBus (vs 3006’s 4 Mbps)

Technical Parameters

Electrical & Power

Power: 24VDC backplane (20.4–28.8VDC), ~450mA, 11W typical

Isolation: 500VDC port‑to‑backplane galvanic isolation

Redundancy: TMR 2oo3 hardware voting; 3 modules mandatory for full TMR

Processing & Memory

Processor: Triple 32‑bit Motorola MPC860 RISC, 50 MHz

DRAM: 16 MB (non‑battery‑backed)

SRAM: 32 KB (battery‑backed, for retention)

Flash: 6 MB (firmware/logic storage)

Scan Time: 5–20 ms (much faster than 3006/3007)

TriClock: ±2 s/day typical drift (battery‑backed)

Communication Interfaces

TriBus: 25 Mbps, 32‑bit CRC/DMA, isolated (inter‑processor/I/O sync)

Diagnostic Serial: Isolated RS‑232 (25‑pin, 500VDC isolation)

I/O Capacity: Up to 256 I/O points per system

Mechanical

Form Factor: 3U, 19” rack, 1 slot

Dimensions (W×H×D): 114 × 30 × 185 mm

Weight: ~1.4 kg (3.1 lbs)

Mounting: Plug‑in backplane, hot‑swappable

Environmental

Operating Temp: 0°C to +60°C

Storage Temp: −40°C to +85°C

Humidity: 5%–95% RH, non‑condensing

Certifications: IEC 61508 SIL3, TÜV, UL, CE, ATEX, FM

Diagnostics & Indicators

LEDs: PASS, FAULT, ACTIVE, TMR, ALARM

Diagnostics: >99.9% coverage; real‑time fault detection; ECC protection

Core Functions

High‑Speed TMR Safety Logic

Triple 50 MHz RISC cores execute identical logic; 2oo3 voting eliminates single‑point failures—ideal for large/complex SIL3 ESD/F&G/BMS.

Large Memory & Fast Scan

16 MB DRAM + 6 MB Flash supports large programs; 5–20 ms scan enables rapid safety responses.

25 Mbps TriBus Sync

High‑speed isolated bus ensures tight processor/I/O synchronization for complex logic.

Hot‑Swap & Online Maintenance

Replace modules without shutdown; supports online programming/firmware updates via TriStation 1131.

Comprehensive Diagnostics & SOE

Real‑time fault logging, ECC error tracking, and SOE for compliance; alarms to DCS/HMI.

Applications

Oil & Gas: Large offshore ESD/F&G; complex platform safety logic

Chemical/Refining: High‑integrity BMS/ESD; reactor/process safety control

Power Generation: Boiler BMS/Turbine TMC; critical turbine safety

SIS Upgrades: Replaces 3006/3007 in Tricon v10–v11 systems