ICS TRIPLEX T8403 CPU controller

　　Product 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 on-board diagnostic testing,provides comprehensive fault detection and tolerance.

　　The module provides on-board Sequence of Events(SOE)reporting with a resolution of 1 ms.A

　　change of state triggers an SOE entry.States are determined by voltage thresholds that can be

　　configured on a per channel basis.

　　Features:

　　•40 Triple Modular Redundant(TMR)input channels per module.

　　•Comprehensive,automatic diagnostics and self-test.

　　•Selectable line monitoring per channel to detect open circuit and short circuit field wiring

　　faults.

　　•2500 V impulse withstand opto/galvanic isolation barrier.

　　•On-board Sequence of Events(SOE)reporting with 1 ms resolution.

　　•Configurable 50/60 Hz digital filtering to eliminate field induced noise.

　　•Module can be hot-replaced on-line using dedicated Companion(adjacent)Slot or SmartSlot

　　(one spare slot for many modules)configurations.

　　•Front panel input status LEDs for each channel indicate input status and field wiring faults.

　　•Front panel module status LEDs indicate module health and operational mode(Active,

　　Standby,Educated).

　　•TϋV Certified IEC 61508 SIL 3.