T8403

ICS Triplex T8403 Trusted TMR 24V DC Digital Input Module

The ICS Triplex T8403 is a high – reliability digital input module designed for ICS Triplex TMR systems3. It is used to receive digital input signals from various devices and is suitable for industrial automation systems and process control systems that require high reliability and safety2. It has 40 triple modular redundant (TMR) input channels, which can process digital signals from 40 field devices2. It adopts a sigma – delta input circuit to measure the input voltage with high precision2. The module also has comprehensive automatic diagnosis and self – test functions, and each channel can be selectively monitored to detect open – circuit and short – circuit field wiring faults2. In addition, it has a 2500 V impulse – withstand opto – isolation barrier, onboard sequence of events (SOE) reporting with 1 ms resolution, and can be hot – replaced online2. The front – panel input status LEDs and

module status LEDs respectively indicate the input status, field wiring faults, module health, and operating mode2. It has passed IEC 61508 SIL 3 certification2.