Description
The ICS Triplex T8403 is a high-integrity 40-channel digital input module featuring Triple Modular Redundant (TMR) architecture. It is designed for safety-critical applications, providing maximum fault tolerance and availability by using three independent input circuits for every channel.
Technical Parameters
- Model Number: T8403
- Input Channels: 40 TMR Channels
- Nominal Voltage: 24 Vdc
- Measurement Range: -6 Vdc to +36 Vdc
- Input Impedance: 5 kΩ
- Isolation: 2500 V impulse withstand isolation barrier
Product Specifications
- Architecture: Triple Modular Redundancy (TMR)
- SOE Resolution: 1 ms (Sequence of Events)
- Safety Rating: SIL 3 Certified (IEC 61508)
- Operating Temp: 0°C to +60°C (32°F to +140°F)
- Dimensions: 266mm x 31mm x 303mm
- Weight: 1.18 kg
Application Fields
- Emergency Shutdown Systems (ESD)
- Fire and Gas (F&G) Detection Networks
- Critical Turbine Control and Monitoring
- Nuclear Power Plant Safety Systems
Product Q&A
- Q: How does the TMR architecture benefit the system?
- A: It uses three internal sub-modules to vote on field signals; if one circuit fails, the other two maintain correct operation without interrupting the process.
- Q: Does the T8403 support line monitoring?
- A: Yes, it features selectable line monitoring per channel to detect open circuits and short circuits in field wiring.
- Q: Can this module be replaced while the system is running?
- A: Yes, it supports hot-replacement (hot-swapping) using a dedicated companion slot or SmartSlot configuration.
