OTHER BRANDS

1.Core Functions

1. Triple Modular Redundant (TMR) Fault-Tolerant Architecture (Core Safety Feature) Three fully independent internal circuits and processors run in parallel with hardware voting logic. Single-point failures of any circuit, chip or channel are automatically masked by the system; the remaining two channels maintain normal output without false trips or process shutdown. Complies with IEC 61508 SIL 3 high process safety standards to eliminate safety system failure risks.
2. High-Density 40-Channel 24 VDC Digital Output Driving 40 discrete digital output channels in total, divided into 5 independent power groups (8 channels per group). Each channel supports continuous 2A output current with a maximum 8A total current per group. Directly drives solenoid valves, shutdown valves, audible/visual alarms, contactors and relays. Independent power isolation prevents cross-group fault propagation.
3. Full Circuit Loop Diagnostics & Fault Detection Optional line monitoring function continuously detects field wiring faults including open circuits, short circuits, broken cables and missing loads. Fault codes are uploaded to the safety controller within milliseconds, with 1ms resolution Sequence of Events (SOE) logging to pinpoint failure locations and reduce maintenance downtime.
4. Built-In Electronic Overcurrent & Short-Circuit Protection Each channel integrates electronic current limiting and latching protection without external fuses. Short-circuited field cables trigger instant channel cut-off, with automatic recovery after fault clearance to protect the module and field valves/instruments from burnout.
5. Hot-Swap Maintenance Without Process Shutdown Supports online hot swapping on Trusted rack backplanes; faulty T8451 modules can be replaced individually while the production process remains running. Standard backplane slot plug-in design compatible with the full Trusted safety system rack.
6. Wide Temperature Range for Harsh Industrial Environments Wide-temperature variant operates from -40°C to +85°C, standard version from -20°C to +60°C. High vibration and EMI resistance for high-temperature, low-temperature and heavy electromagnetic interference conditions in chemical, oil & power plants.
7. Execution of Safety Logic Commands Receives interlock, Emergency Shutdown (ESD), fire protection and unit trip logic commands from Trusted safety CPUs, and transmits stable discrete signals to field safety actuators. Serves as the core interface between Safety Instrumented Systems (SIS) and field equipment.

2. Main Industrial Applications

1. SIS Safety Systems for Oil, Gas & Refining Industry Control emergency shutdown valves for oil wellheads and refinery reactors. Trigger feed and vent valve cut-off during over-temperature or over-pressure interlocks. TMR redundant architecture prevents explosion and leakage hazards caused by single-point faults, meeting mandatory SIL3 safety compliance.
2. Unit Protection for Thermal Power & Renewable Power Plants ESD boiler emergency shutdown, turbine trip circuits, and interlock control for desulfurization & denitrification systems. Regulate fans, water pumps and gas shut-off valves to ensure safe generator shutdown during faults and avoid severe equipment damage.
3. Fine Chemical & Hazardous Chemical Process Plants Safety interlock systems for reactors, distillation columns and hazardous chemical storage tanks. Cut off inlet/outlet valves upon over-level or over-pressure triggers; certified for use in explosion-proof chemical workshops to meet mandatory chemical safety regulations.
4. Coal Chemical & LNG Liquefied Natural Gas Terminals Emergency shut-off control for LNG storage tanks and vaporization stations, plus linkage of fire-fighting spray systems. Wide-temperature T8451 variants adapt to extreme low-temperature outdoor field stations.
5. Fire & Safety Interlocks for Rail Transit & Large Tunnels Safety control for tunnel smoke exhaust fans, fire doors and emergency sprinkler systems; high-reliability redundant outputs guarantee reliable equipment operation during fire emergencies.
6. Explosion-Proof Production Line Interlocks for Pharmaceutical & Food Industry Overload shutdown interlocks for dust removal and mixing equipment in powder explosion-proof workshops, mitigating dust explosion safety hazards.
7. OEM Supporting for Complete SIS Safety Instrument Control Cabinets Standard IO module for full Trusted safety control systems, integrated into ESD emergency shutdown cabinets and F&G Fire & Gas alarm control cabinets as standard output hardware for safety systems.