{"product_id":"ics-triplex-t8431-trusted-tmr-24-vdc-analog-input-module","title":"ICS Triplex T8431 Trusted TMR 24 Vdc Analog Input Module","description":"\u003ch2\u003eICS Triplex T8431 Trusted TMR 24 Vdc Analog Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eICS Triplex T8431\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eT8431\u003c\/strong\u003e Trusted TMR 24 Vdc Analog Input Module, operates as a dedicated hardware component for 40-channel fault-tolerant current and voltage measurement within Trusted Triple Modular Redundant (TMR) safety system platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eT8431\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICS Triplex\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited Kingdom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.149 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e266 mm x 31 mm x 303 mm (10.5 in x 1.2 in x 12.0 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-5 deg C to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e15 W to 18 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Supply Voltage Range\u003c\/td\u003e\n\u003ctd\u003e20 VDC to 32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Inputs\u003c\/td\u003e\n\u003ctd\u003e40 Channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Ranges\u003c\/td\u003e\n\u003ctd\u003e0-22 mA \/ 0-6 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSample Update Time\u003c\/td\u003e\n\u003ctd\u003e0.5 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e3.9 uA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Accuracy\u003c\/td\u003e\n\u003ctd\u003e+\/-1% of full scale\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.03%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Common Isolation\u003c\/td\u003e\n\u003ctd\u003e+\/-250 VDC sustained working, +\/-2.5 kVDC maximum withstanding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel-to-Channel Crosstalk\u003c\/td\u003e\n\u003ctd\u003e-40 dB to -60 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSequence of Events\u003c\/td\u003e\n\u003ctd\u003e1 ms resolution, +\/-0.5 ms timestamp accuracy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelf-Test Interval\u003c\/td\u003e\n\u003ctd\u003e2 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSIL3 Safety \u0026amp; Triple Modular Redundancy (TMR) Architecture\u003c\/h3\u003e\n\u003cp\u003eThe module utilizes a Triple Modular Redundant (TMR) 2oo3 architecture across all 40 analog input channels, maintaining complete galvanic isolation and full hardware triplication from field terminals to the system backplane interface. Each incoming signal path is voted via majority logic algorithms to execute fail-safe state processing without interrupting channel availability. Integrated continuous self-test routines run on a 2-minute cycle to verify channel calibration, cross-talk suppression (-40 dB to -60 dB), and line monitoring without altering field signal processing or cycle execution.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the T8431 module feature onboard fuse protection for field loop inputs?\u003c\/p\u003e\n\u003cp\u003eA: No, the module contains no internal fusing. External fuses must be installed on the field side if circuit current limiting is required by safety design standards.\u003c\/p\u003e\n\u003cp\u003eQ: How does line fault monitoring function across the input channels?\u003c\/p\u003e\n\u003cp\u003eA: Line monitoring is optional and user-configurable via threshold parameters. It detects open-circuit and short-circuit conditions by comparing measured field currents against four user-defined threshold limits.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure the backplane power supply voltage is regulated within 20 VDC to 32 VDC prior to inserting the module into the designated slot.\u003c\/li\u003e\n\u003cli\u003eAlign the card edge connectors with the rear chassis guide rails, applying steady pressure until the locking tabs snap securely into place.\u003c\/li\u003e\n\u003cli\u003eTerminate signal cables using twisted-pair shielded conductors to maintain field common isolation up to +\/-250 VDC.\u003c\/li\u003e\n\u003cli\u003eConnect cable shields to designated system grounding points at a single node to prevent ground loops and preserve 1 ms Sequence of Events time-stamping accuracy.\u003c\/li\u003e\n\u003cli\u003eIf field signals originate from hazardous areas, route through certified external intrinsic safety barriers rated for the specific application zone.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":41389515800666,"sku":"T8431","price":200.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/T84312.jpg?v=1785231285","url":"https:\/\/www.plcmasters.com\/products\/ics-triplex-t8431-trusted-tmr-24-vdc-analog-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}