Module Overview
The T8471 Trusted® TMR module provides 32 digital output channels, each with triple modular redundancy and on-board diagnostics. Moreover, automatic line monitoring detects open circuit and short circuit faults, ensuring reliable operation in critical control systems. In addition, front-panel LEDs indicate channel output status, wiring faults, and module health, supporting fast troubleshooting in industrial environments.
Functional Highlights
- 32 TMR Output Channels: Fully triplicated with automatic diagnostics.
- Sequence of Events (SOE): 1 ms resolution triggers entries on output state change.
- Automatic Over-Current Protection: Protects each channel without fuses.
- Fault-Tolerant Design: Detects stuck-on and stuck-off failures per channel.
- Hot-Swappable Module: Replacement is possible without shutting down adjacent modules.
- IEC 61508 SIL 3 Certified: Ensures compliance with safety integrity requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Module Type | T8471 |
| Number of Outputs | 32 Channels |
| Independent Power Groups | 4 groups (8 outputs per group) |
| Operational Output Voltage Range | 35–150 Vdc (depending on revision) |
| Output Current Rating | 0.5 A per channel, 2 A per power group |
| Minimum On-State Load Current | 20 mA |
| Output Off-State Resistance | 330 kΩ |
| Output On-State Resistance | 0.8 Ω |
| Output Short Circuit Protection | Electronic (latching) |
| Turn-On/Off Delay | 5 ms |
| Sample Update Time | 0.5 ms |
| SOE Resolution | 1 ms |
| Time-Stamp Accuracy | ±0.5 ms |
| Self-Test Interval | 5 minutes |
| System Supply Voltage Range | 20–32 Vdc |
| Isolation Power Group to Power Group | 150 V Reinforced |
| Channel to Channel Isolation | 250 V Basic |
| Operating Temperature | 0–60 °C (32–140 °F) |
| Non-Operating Temperature | -25–70 °C (-13–158 °F) |
| Relative Humidity | 10–95% (non-condensing) |
| Dimensions (HxWxD) | 266 x 31 x 303 mm (10.5 x 1.2 x 12 in) |
| Weight | 1.342 kg (3 lb) |
System Integration
The T8471 module integrates with ICS Triplex control systems for high-reliability digital output control. Therefore, it is widely used in power plants, petrochemical facilities, and critical industrial automation, providing automatic diagnostics, fault detection, and hot-swappable maintenance. In addition, the isolated output groups and comprehensive TMR architecture ensure fault-tolerant operation under high-demand conditions.
Details
| Weight | 1.342 kg |
|---|
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