3008 Triconex CPU Controller | Triple Modular Redundant

Product Overview

• The 3008 is the core Main Processor (MP) for Triconex v9.6 and later safety systems.
• Three 3008 modules work in parallel to execute user control programs with Triple Modular Redundant (TMR) integrity.
• Equipped with a 32-bit Motorola MPC860 processor, it delivers high-speed logic execution at 50 MHz.
• Integrated Sequence of Events (SOE) capabilities allow for millisecond-accurate time-stamping of discrete variables.

Technical Specifications

• Brand: Triconex
• Model: 3008
• Microprocessor: Motorola MPC860 (32-bit, 50 MHz)
• Memory: 16 MB DRAM, 32 KB SRAM (Battery-backed), 6 MB Flash
• Tribus Rate: 25 Mbps with 32-bit CRC protection
• I/O Bus Processor: Dedicated 32-bit 50 MHz MPC860
• DMA: 32-bit, fully isolated for safe communication
• Indicators: PASS, FAULT, ACTIVE, MAINT, COM TX/RX, I/O TX/RX
• System Version: Compatible with Tricon v9.6+

Diagnostic & Redundancy Capabilities

• Continuous self-diagnostics verify the health of Flash PROM, SRAM, and triplicated Tribus channels.
• The 3008 features hardware majority-voting that masks transient faults without affecting process output.
• Supports Hot Replacement, enabling the exchange of a faulty module while the system remains fully operational.
• Separate I/O and COM bus indicators allow for rapid isolation of communication bottlenecks or hardware failures.

Typical Application Scenarios

• Central control for refinery Emergency Shutdown Systems (ESD).
• Safety-critical logic execution in Nuclear Power Plant instrumentation and control.
• High-speed Burner Management Systems (BMS) requiring 100% triplicated reliability.
• Distributed SOE monitoring in global petrochemical facilities via NCM synchronization.

Global PLC Spare HUB’s Insight

• The 3008 is a "high-availability" workhorse that separates application logic from bus communication.
• Our technical review emphasizes the 32-bit CRC protection on the Tribus link, which ensures that data corrupted during transit is never voted into the final safety result.
• For maximum reliability, ensure your 3008 modules are installed in a chassis with a healthy backup battery to protect the 32 KB SRAM configuration data.

Shipping & Warranty Terms

• Warranty: 12-month quality guarantee provided for all 3008 Main Processors.
• Express Logistics: Global delivery via FedEx, UPS, or DHL Express.
• Handling Time: Dispatched from stock within 24 to 48 hours.
• Product State: Professional-grade hardware, fully inspected for v9.6+ firmware compliance.

Expert FAQ & Selection Tips

• Can I run a Tricon system with only two 3008 processors?
• No, the TMR (Triple Modular Redundant) architecture requires exactly three 3008 modules to perform the necessary hardware voting.
• What happens if the COM TX light is flashing but the ACTIVE light is off?
• This suggests the module is communicating on the bus but is not currently executing the user program; check the TriStation software for configuration errors.
• Is the DRAM on the 3008 battery backed-up?
• No, only the 32 KB SRAM is battery backed-up to retain static data; the DRAM is used for high-speed temporary execution and does not require a battery.
• How do I handle a "MAINT" indicator on the front panel?
• Maintenance indicators (MAINT1/2) usually signal a non-critical internal warning; use the diagnostic logs to determine if preventative replacement is needed.
• Does this module support the earlier SOE protocol used in Tricon v8?
• The 3008 is optimized for v9.6 and later; for older systems, you must verify the specific SOE block compatibility in the Planning and Installation Guide.

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