Description
The ICS Triplex T8451 is a high-integrity Digital Output module designed for the Trusted Triple Modular Redundant (TMR) system. It provides 40 fully isolated channels with a focus on maximum safety and availability, utilizing a 3-2-0 voting architecture to ensure fault-tolerant operation for critical industrial emergency shutdown (ESD) and fire and gas (F&G) systems.
Key Specifications
- Model Number: T8451
- Series: Trusted TMR System
- Output Channels: 40 Channels (Grouped)
- Voltage Rating: 24V DC
- Architecture: Triple Modular Redundant (TMR)
- Configuration: Commoned or Isolated groups
Technical Parameters
- Output Current: 0.5A per channel (continuous)
- Maximum Leakage: < 1.5mA in Off state
- Power Dissipation: 30W (Full load)
- Self-Diagnostics: Comprehensive line monitoring (Short/Open circuit)
- Response Time: < 10ms (Input to Output)
Application Fields
- Emergency Shutdown Systems (ESD)
- Fire and Gas (F&G) detection and mitigation
- Burner Management Systems (BMS)
- High-pressure protection systems (HIPPS)
- Critical infrastructure safety interlocking
Product Q&A
- Q: Does the T8451 support line monitoring?
- A: Yes, it performs continuous monitoring for open-circuit and short-circuit faults in both On and Off states.
- Q: Can it be used for SIL 3 applications?
- A: Yes, as part of the Trusted TMR system, it is certified for use in Safety Integrity Level 3 (SIL 3) environments.
- Q: Is there a fuse on each channel?
- A: The module uses electronic current limiting and smart protection rather than traditional physical fuses for each channel.
- Q: How does TMR voting work in this module?
- A: Three internal sub-modules process the data and “vote” on the output state; a fault in one sub-module does not interrupt the process.
