1. Product Introduction

2. Model Definition Explanation

1. Prefix TRICONEX: Brand mark, representing Tricon TMR safety control hardware series, separated from I/O, communication auxiliary modules.

2. Four-digit core number 3008: Internal rack main processor classification coding. The first digit "3" represents core control processing category; the middle two digits "00" mark standard triple redundant main control circuit layout; the last digit "8" represents MPC860 processor base hardware platform with expanded memory and Tribus communication bandwidth.

3. Optional suffix configuration codes for differentiated project demands:

• No extra suffix: Standard indoor control room main processor version, universal cabinet installation.

• N suffix (3008N): Optimized noise suppression variant, strengthened EMC circuit for offshore high-interference environments.

• -E: Full English firmware variant, all front panel fault prompts, system diagnostic codes and TriStation configuration text display in English for overseas international projects.

• -HT: High-temperature extended variant, raising stable upper operating temperature to +70°C for high-heat turbine island and furnace side control cabinets.

3. Technical Specifications

Electrical Performance

• Core processor: Motorola MPC860 32-bit RISC, operating frequency 50MHz

• Memory allocation: 16MB non-battery-backed DRAM for program and real-time data; 32KB battery-backed SRAM for fault log and SOE event cache; 6MB Flash PROM for firmware storage

• Tribus I/O bus communication speed: 25Mbps, 32-bit CRC data error protection, full electrical isolation between three redundant buses

• External communication interfaces: 1×10/100Mbps Ethernet port for upper monitoring communication; 1×RS232 serial debugging port for TriStation offline download and maintenance

• Maximum system control capacity: Supports matching up to 256 I/O slots, processing 1000 analog points and 2000 digital discrete points simultaneously

• Full system logic scan cycle: Configurable 10ms ~ 500ms adjustable, all SOE event timestamps accurate to millisecond level

• Built-in independent power supply overvoltage, undervoltage and overcurrent protection; single processor channel power abnormality only triggers channel fault alarm without stopping cross-channel voting operation.

Functional Safety & Reliability Index

Environmental & Mechanical Parameters

4. Interface and Communication Configuration

Hardware Interface Layout

1. Status indicators: PASS normal operation light, FAULT hardware fault alarm light, ACTIVE main channel running light, MAINT maintenance prompt light, COM TX/RX serial communication transmit/receive lights, VOTX/IORX Tribus bus communication lights;

2. Physical ports: RJ45 Ethernet port for system upper network communication, 9-pin RS232 serial debugging port, hardware lockable module extraction handle.

   All external communication ports support shielded cable wiring, with independent surge isolation circuits to block external network surge interference from invading the processor core circuit.

Internal Tribus Redundant Communication Mechanism

System Configuration Mode

5. Core Functions

1. Triple Redundant Synchronous Safety Control Logic Operation

   Three independent 3008 main processors run identical user safety interlock programs synchronously, collect all digital/analog/pulse I/O signal data respectively, and only output valid safety commands to field execution equipment after two-out-of-three hardware voting verification, completely avoiding false trip or safety logic loss caused by single processor channel hardware abnormality. The large-capacity memory design supports complex multi-unit combined safety interlock logic operation for large-scale process plants.
2. Full Rack I/O Data Collection, Voting and Fault Diagnosis

   Each 3008 independently communicates with all I/O modules on its corresponding Tribus bus, completes real-time collection of field contact, analog and pulse signals, and uniformly diagnoses channel open circuit, short circuit, overvoltage and hardware faults of all I/O modules. All I/O fault information is uniformly summarized to the main processor for centralized storage and upper-level upload, realizing one-stop system hardware fault monitoring without separate polling of each I/O card.
3. High-Precision SOE Sequence-of-Event Recording

   Built-in millisecond-level timestamp arithmetic unit, marking time for all digital signal state change events, safety trip actions and module fault events, storing complete event sequence records in battery-backed SRAM. Even if the rack main power supply is cut off, historical SOE records will not be lost, supporting post-accident root cause analysis and factory safety compliance audit.
4. Multi-Channel External Communication Data Interaction

   Dual communication port design realizes separated maintenance and monitoring communication: the Ethernet port is responsible for long-term real-time data upload to upper HMI and DCS; the RS232 serial port is dedicated to offline program download and on-site maintenance log reading, and the two communication channels do not occupy each other’s bandwidth to avoid monitoring delay caused by maintenance operation. Multiple industrial standard communication protocols are pre-stored in firmware, adapting to mainstream industrial upper monitoring systems.
5. Complete Multi-Layer System Self-Diagnosis and Fault Alarm

   Continuous background self-diagnosis covers processor core operation state, memory read-write integrity, Tribus bus communication quality, backplane power supply stability, I/O module online status and external communication port link state. All detected system-level faults trigger front panel FAULT light alarm, upload fault codes and fault occurrence timestamps to the central monitoring platform, and support automatic fault record export through TriStation software. Single-channel processor fault will not shut down overall system control, and the remaining two redundant channels maintain normal safety interlock operation.
6. Centralized System Parameter Storage and Program Redundant Backup

   All safety control programs and system configuration parameters are stored in independent Flash memory of each 3008 main processor; three MPs automatically synchronize program files after power-on to realize triple redundant backup of safety logic programs. When one main processor fails and is replaced with a spare module, the other two normal MPs automatically copy the complete program and parameter configuration to the new spare card without repeated manual download by maintenance personnel.

6. Applicable Scenarios

1. Large Petrochemical Refining ESD Safety Instrument Systems

   Used as core triple redundant main control unit for crude oil atmospheric-vacuum distillation, catalytic cracking and hydrogenation unit safety racks, undertaking full-unit safety interlock logic operation, mass I/O signal collection and SOE accident recording, supporting multi-reactor combined complex safety trip control.
2. Offshore Oil & Gas Platform Fire and Gas Protection Safety Systems

   Adapted to offshore high-humidity, salt-fog, vibration and strong electromagnetic interference environments, the 3008N noise-optimized variant is adopted for deck safety control cabinets, realizing integrated safety monitoring of wellhead pressure, combustible gas concentration and emergency shutdown valves of all platform equipment.
3. Natural Gas Transmission Pipeline Compressor and Storage Station Safety Interlock Systems

   Serves large station main safety racks, processing scattered pipeline pressure, flow, valve position and compressor speed pulse signals, executing overpressure, over-flow and overspeed safety trip logic, and storing long-distance pipeline equipment fault SOE records.
4. Thermal Power Plant Steam Turbine Overspeed SIL3 Safety Protection Systems

   Applied in large generator unit turbine island SIS racks, matching 3381 pulse input modules to collect turbine speed probe signals, completing fast-response overspeed trip safety logic calculation, meeting high real-time requirements of rotating equipment safety protection.
5. Large Coal Chemical and Hazardous Waste Incineration Plant Safety Control Systems

   Deployed in Class I explosive hazardous area central control rooms, undertaking furnace temperature, pressure, flue gas concentration and storage tank overflow multi-point safety monitoring logic operation, realizing centralized safety control of full plant high-risk process equipment.
6. Medium and Large Fine Chemical Multi-Workshop Integrated Safety Instrument Systems

   Used as main control core for multi-reaction workshop combined SIS racks, realizing unified collection and interlock judgment of reactor temperature, pressure, toxic gas and local emergency stop signals of multiple production lines, supporting batch production safety management and accident traceability.

7. Operation and Maintenance Instructions

Installation Requirements

Daily Routine Inspection Standards

Regular Inspection and Calibration Cycle

Common Fault Handling Procedures

Spare Module Storage and Long-Term Service Management

Maintenance Safety Prohibitions