ICS Triplex T8403 Trusted TMR 24 Vdc Digital Input Module 40 Channel
ICS Triplex T8403 is a Trusted TMR 24 Vdc Digital Input Module 40 ChannelProduct overview The Trusted® TMR 24 Vdc Digital Input module interfaces to 40 field input devices. Fault tolerance is achieved through a Triple Modular Redundant (TMR) architecture within the module for each of the 40 input channels. Each field input is triplicated and the input voltage is measured using a sigma-delta input circuit. The resulting field voltage measurement is compared to user configurable threshold voltages to determine the reported field input state. When a line-monitoring device is installed at the field switch, the module can detect open and short circuit field cables. Line monitoring functions are independently configured for each input channel. The triplicated voltage measurement, coupled with onboard diagnostic testing, provides comprehensive fault detection and tolerance. The module provides onboard Sequence of Events (SOE) reporting with a resolution of 1 ms. A change of state triggers an