The ICS Triplex T8300 Trusted Expander Chassis is a core expansion chassis under the ICS Triplex Trusted TMR (Triple Modular Redundancy) series by Rockwell. It is specifically designed for high‑safety, high‑reliability, and high‑fault‑tolerance industrial control systems in sectors such as petrochemical, power, oil and gas, and nuclear power. It is used to expand the I/O and communication capabilities of the main controller (e.g., T8403 processor module), adopting a 3‑2‑0 hardware voting fault‑tolerant architecture and meeting the IEC 61508 SIL 3 safety integrity level. It serves as a critical hardware platform for building large‑scale distributed safety control systems.
ICS Triplex T8300 Core Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | T8300 |
| Product Type | Trusted TMR Expander Chassis |
| Redundancy Architecture | 3‑2‑0 TMR (Triple Modular Redundancy), hardware voting |
| Power Supply Requirement | 24 V DC (compatible with 20 V–32 V DC), supports redundant power input |
| Operating Temperature | -10 °C to +60 °C (-20 °C to +75 °C for some scenarios) |
| Ingress Protection | IP65 (for cabinet internal installation) |
| Dimensions | Approx. 300 mm × 200 mm × 100 mm |
| Weight | Approx. 5 kg |
| Slot Configuration | Standard backplane slots for I/O, communication, power modules |
| Communication Interfaces | Backplane supports Ethernet, Modbus TCP/IP, Profibus, CAN (via modules) |
| Safety Certifications | IEC 61508 SIL 3, TÜV, ATEX, UL, etc. |
| Fault Handling | HIFT (Hardware Implemented Fault Tolerance), failover time ≤ 1 ms |
| Hot Swap | Supports online hot-plug of modules, replacement without shutdown |
Key Features & Benefits
- Ultimate Safety & Fault ToleranceAdopts 3‑2‑0 TMR architecture; any single-point fault does not affect full system functionality, meeting the highest safety requirements of SIL 3.Hardware voting mechanism enables automatic fault detection, isolation and masking, with failover time ≤ 1 ms and no risk of false operation.Built-in fault history recording and diagnostics for quick fault location and troubleshooting.
- Flexible Expansion & ModularityProvides standard backplane slots for free combination of digital I/O, analog I/O, communication, power supply and other modules, allowing system scaling on demand.Supports cascaded expansion. A single main controller can connect multiple T8300 expander chassis via expansion interface modules (e.g., T8311) to build large-scale distributed control systems.Modular design supports online module insertion/removal without system interruption.
- High Reliability & Easy MaintenanceWide-temperature and high-protection design adapts to harsh industrial environments such as offshore platforms, high-temperature petrochemical facilities, and extreme-cold mines.Supports module hot-swapping; faulty modules can be replaced directly during operation in approximately 30 seconds, greatly reducing downtime costs.Module replacement without program download simplifies maintenance procedures.
- Multi-Protocol Compatibility & Easy IntegrationSupports mainstream industrial protocols including Ethernet, Modbus TCP/IP, Profibus, CAN via communication backplane modules (e.g., T8151B).Seamlessly connects to upper systems such as SCADA, DCS, MES for data exchange and centralized monitoring.Compatible with IEC 61131‑3 standard programming languages, supporting ladder logic, function block diagram, etc., for easy program development and debugging.
Installation and Maintenance
- Installation Procedure
- Cabinet Installation: Mount the T8300 chassis in a standard industrial cabinet, ensuring good ventilation and reliable earthing.
- Power Connection: Connect 24 V DC redundant power supply, and verify the power polarity and voltage range (20 V–32 V DC).
- Module Installation: Insert processor interface modules (e.g., T8310C), I/O modules, communication modules, etc., into the corresponding backplane slots, and ensure the latches are securely locked.
- Communication Connection: Connect the main controller chassis and expander chassis via expansion interface adapters (T8312‑4 / T8312‑7) to establish IMB (Inter-Module Bus) communication.
- Power-up and Commissioning: Power up sequentially, check module indicator status, and complete system configuration and diagnostics using Trusted Toolset software.
- Maintenance Guidelines
- Routine Inspection: Regularly check power supply, module indicators, and communication status, and record fault codes.
- Module Replacement: When the fault indicator of a module is lit, replace it directly by hot-swapping without shutting down the system. Configuration will be automatically synchronized after replacement.
- Firmware Upgrade: Perform online module firmware upgrade via Trusted Toolset software without affecting system operation.
Environmental Maintenance: Keep the cabinet clean and ventilated, and prevent ingress of dust, moisture, and corrosive gases.
- The T8300 Expander Chassis must be used with other hardware in the Trusted TMR series. The core supporting products are as follows:
- Main Controller Module: T8403 (Trusted TMR Processor Module, executes control logic and programs).
- Expansion Interface Module: T8311 (installed in the main controller chassis, provides connection interfaces for expander chassis).
- Expansion Interface Adapters: T8312‑4 (connects up to 4 expander chassis), T8312‑7 (connects up to 7 expander chassis).
- Processor Interface Module: T8310C (installed in the T8300 Expander Chassis, enables communication with the main controller).
- I/O Modules: Digital input/output modules (e.g., T8400, T8430), analog input/output modules (e.g., T8440, T8450), special function modules (e.g., speed monitoring T8442, fire and gas system T8448).
- Communication Modules: T8151B (Ethernet Communication Module), T8110 (Modbus Communication Module), etc.
- Power Supply Modules: T8231 (750 W redundant power supply module), T8240 (power supply chassis).
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