T8403C Product datasheet 

T8403C Functional Description 

The T8403C INPUT MODULE ICS Triplex represents a critical component in high-integrity industrial control systems, specifically engineered as a Trusted 24Vdc digital input module. This robust module provides 40 independent channels for connecting field input devices, serving as a vital interface between physical field equipment and the central control system. 

The design philosophy behind the Input Modules ICS Triplex T8403C centers on achieving maximum reliability through its triple modular redundancy (TMR) architecture, where each of the 40 input channels is independently triplicated to ensure continuous operation even in the event of component failures.

This redundant approach extends to the input measurement technology, where each field input voltage is precisely measured using sophisticated sigma-delta input circuits. The ICS Triplex T8403C Input Modules compares these measurements against user-configurable threshold voltages to determine the accurate status of each field input. Beyond basic input monitoring, the Miele condensdroger T8403C ICS Triplex incorporates advanced diagnostic capabilities including comprehensive line monitoring that can detect both open and short circuit conditions in field wiring when used with appropriate field switches.

The module's triple voltage measurement system, combined with continuous onboard diagnostic testing, provides exceptional fault detection and tolerance capabilities. Furthermore, the ICS Triplex T8403C enhances system visibility through integrated Sequence of Events (SOE) reporting with 1-millisecond resolution, automatically capturing status changes triggered by configurable voltage thresholds. This combination of features makes the digital input module ICS Triplex T8403C an indispensable solution for critical applications where operational safety and system availability are paramount concerns.