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It adopts a TMR architecture, with each output channel achieving fault tolerance through triple redundant design, allowing the system to operate normally even if a single channel fails.
It is equipped with comprehensive automatic diagnostic and self-test functions, supporting line monitoring (to detect faults such as open circuits and short circuits), overcurrent protection, and Sequence of Events (SOE) recording (with a resolution of 1ms).
Compliant with the IEC 61508 SIL 3 safety integrity level standard and certified by TÜV, it is suitable for industries with extremely high safety requirements such as petrochemicals and electric power.
DATA SHEET
ICS TRIPLEX T8461 .pdf
Core Functions and Advantages of T8461
- Redundancy and Safety Design
TMR Architecture: Each module contains 3 independent signal processing channels (A, B, C). The internal voting mechanism ensures data accuracy, and a single channel failure will not affect the overall operation.
Fault Protection: Supports channel-level short-circuit protection (electronic latching, no external fuse required), overcurrent protection (automatic power-off in case of continuous overcurrent), and Group Fault Safety Switch (GFSS), which can force power-off in case of multiple faults.
Isolation Performance: Equipped with a 2500V pulse-withstand optical/galvanic isolation barrier, independent isolation between channels, and strong resistance to electromagnetic interference (EMI/RFI). - Data Acquisition and Monitoring
Line Monitoring: Automatically detects open circuits, short circuits, and load faults in on-site wiring, and judges the output status (such as "output energized", "no load", etc.) through voltage and current measurement.
Sequence of Events (SOE) Recording: Automatically records time stamps when the output status changes, with a resolution of 1ms, supporting system-level event log management.
Status Indication: The front panel is equipped with 40 channel LED indicators (displaying output status and faults) and module status LEDs (health, Active/Standby, Educated modes). Flexibility and Maintenance Convenience
Hot-Swap Support: Online hot replacement can be realized through "Companion Slot" (dedicated standby slot) or "SmartSlot" (shared standby slot) without shutdown.
Configuration Method: Configured through the IEC 61131 toolset of the Engineering Workstation (EWS), supporting the configuration of parameters such as custom LED indication modes and fail-safe status.
Diagnostic Function: Real-time monitoring of "housekeeping" signals such as power supply voltage, current, and board temperature, and alarming through LEDs and system variables when faults occur.
Technical Parameters
| Category | Details |
|---|
| Power Supply Specifications | Backplane (IMB) power supply: 20-32V DC; Field power supply: 18-58V DC |
| Output Channels | 40 channels, divided into 5 power groups (8 channels per group) |
| Output Performance | Continuous maximum current: 0.75A per channel; Minimum load current: 25mA; On-resistance: 1.6Ω |
| Measurement Range | Current: 0-1.35A (±5% or ±5mA); Voltage: 0-58V DC (±2V) |
| Environmental Adaptability | Operating temperature: 0-60°C; Storage temperature: -25-70°C; Humidity: 10%-95% (non-condensing) |
| Physical Dimensions | Height 266mm × Width 31mm × Depth 303mm; Weight 1.3kg |
| Safety Certifications | IEC 61508 SIL 3; TÜV certification; Impulse withstand voltage 2500V |
Application Scenarios of T8461
It is suitable for industrial fields with extremely high requirements for safety and reliability, including:
- Petrochemical industry: controlling valves and monitoring compressor speed;
- Power industry: controlling generator status and driving substation equipment;
- Water treatment: controlling the start and stop of pump equipment;
- Metallurgy and pharmaceutical industry: safety interlocking and process control of production lines.
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