TRICONEX 2755
Product Name
TRICONEX 2755 Safety-Related Digital Input Module (Triconex Safety Instrumented System (SIS) I/O Module for Critical Industrial Safety Applications)
2. Product Description
The TRICONEX 2755 is a high-reliability digital input module specifically designed for safety instrumented systems (SIS) and critical control applications in industries such as oil & gas, petrochemicals, power generation, and pharmaceuticals. As a key component of the Triconex Tricon and Trident SIS platforms, its primary function is to safely and accurately collect discrete (on/off) status signals from field devices (e.g., emergency stop buttons, pressure switches, level switches) and transmit these signals to the Triconex controller for safety logic processing.
Engineered with triple-modular redundancy (TMR) technology—TRICONEX’s signature safety design—the module provides fault tolerance by duplicating critical circuits across three independent channels. This ensures that single-point faults do not compromise system operation, enabling compliance with global safety standards such as IEC 61508 (SIL 3) and EN 50155. The module also features built-in diagnostic capabilities (e.g., open-circuit detection, short-circuit protection) to continuously monitor its own health, triggering ala
rms for abnormal conditions to minimize downtime.Key advantages include:
- TMR architecture for SIL 3 compliance, ensuring high availability (≥99.999%) in safety-critical processes;
- Robust noise immunity and surge protection to withstand harsh industrial electromagnetic environments;
- Hot-swappable design for online maintenance without system shutdown;
- Seamless integration with Triconex SIS controllers (e.g., Tricon CX, Trident) and configuration software (Triconex Engineering Suite).


