ICS Triplex T8442 Key parameters

Triple Modular Redundancy (TMR) Architecture

Incorporates three independent monitoring and control groups, each capable of handling one rotating machine (e.g., turbines, compressors). Each group includes three TMR speed input channels and two quad-redundant, fault-tolerant output structures, ensuring continuous operation even during component failures .

Sensor Compatibility & Input Configuration

Supports both active (totem-pole, open-collector) and passive (magnetic, inductive) speed sensors. Interfaces with a dedicated Speed Input Field Termination Assembly (SIFTA) for signal conditioning and field wiring isolation .

Output Redundancy & Safety Features

Utilizes quad-redundant relay outputs with normally open/closed volt-free contacts. Failures in individual relays or contacts do not disrupt load control, and force-guided safety relays detect welded/stuck contacts via load feedback .

Diagnostics & Fault Tolerance

Features real-time load current feedback and contact status monitoring for each output channel. Onboard self-tests and front-panel LEDs provide immediate fault alerts for wiring issues or module malfunctions. Supports hot-swap replacement for minimal downtime .

Environmental & Safety Certifications

Operates in temperatures from -5°C to 60°C with 2500V impulse isolation between field I/O. Certified to IEC 61508 SIL 3 standards, ensuring reliability in critical industrial application .