{"product_id":"ics-triplex-t8402-trusted-tmr-digital-input-module","title":"ICS Triplex T8402 Trusted TMR Digital Input Module","description":"\u003cp\u003eConfigured for 24 VDC discrete field signal acquisition in the Trusted TMR Safety System, the \u003cstrong\u003eICS Triplex T8402\u003c\/strong\u003e (\u003cstrong\u003eT8402 Trusted TMR Digital Input Module\u003c\/strong\u003e) provides redundant input processing with continuous diagnostics. The module accepts field signals from switches and contacts, performs line monitoring, and transfers validated input states through the Trusted controller architecture.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\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\u003eT8402\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eICS Triplex \/ Rockwell Automation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.2 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e241 mm x 30 mm x 300 mm\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\u003eApprox. 15 W to 20 W, dependent on channel load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e18 VDC to 32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchitecture\u003c\/td\u003e\n\u003ctd\u003eTriple Modular Redundant (TMR), 2-out-of-3 voting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Integrity Level\u003c\/td\u003e\n\u003ctd\u003eUp to SIL 3, IEC 61508\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Type\u003c\/td\u003e\n\u003ctd\u003eCurrent sinking or sourcing, dependent on FTA configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLine Monitoring\u003c\/td\u003e\n\u003ctd\u003eConfigurable open-circuit and short-circuit detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation\u003c\/td\u003e\n\u003ctd\u003e500 VDC channel-to-bus opto-isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHot Swappable\u003c\/td\u003e\n\u003ctd\u003eYes, online module replacement supported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd\u003e-25 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Family\u003c\/td\u003e\n\u003ctd\u003eTrusted TMR Safety System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible FTA\u003c\/td\u003e\n\u003ctd\u003eT8800 series Field Termination Assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTrusted TMR Signal Processing and Diagnostics\u003c\/h3\u003e\n\u003cp\u003eThe T8402 uses three independent input processing paths within the Trusted TMR architecture. The system applies 2-out-of-3 voting to input information before controller-level processing.\u003c\/p\u003e\n\u003cp\u003eEach input path includes diagnostic monitoring for internal operating conditions and field line faults. Configurable open-circuit and short-circuit detection supports supervised discrete input circuits.\u003c\/p\u003e\n\u003cp\u003eThe module provides 500 VDC channel-to-bus opto-isolation between field input processing and the system bus. Input polarity and circuit configuration depend on the associated Field Termination Assembly.\u003c\/p\u003e\n\u003cp\u003eFront-panel LEDs indicate module health, active status, and channel-level input states. These indicators support local identification of module and field signal conditions during commissioning and maintenance.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the T8402 be replaced while the Trusted system remains operational?\u003cbr\u003eA: The supplied data specifies hot-swappable operation, allowing online module replacement without process interruption.\u003c\/p\u003e\n\u003cp\u003eQ: What field voltage range does the T8402 accept?\u003cbr\u003eA: The specified input range is 18 VDC to 32 VDC, with 24 VDC as the nominal input voltage.\u003c\/p\u003e\n\u003cp\u003eQ: How does the T8402 process redundant input information?\u003cbr\u003eA: The module uses Triple Modular Redundancy with three independent signal paths and 2-out-of-3 voting.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the T8402 in the designated Trusted I\/O Processor Chassis and verify mechanical engagement before energization.\u003c\/p\u003e\n\u003cp\u003eUse the compatible T8800 series Field Termination Assembly for field wiring and signal termination. Confirm the selected FTA matches the required sinking or sourcing input configuration.\u003c\/p\u003e\n\u003cp\u003eRoute discrete signal wiring separately from high-voltage power conductors, switching circuits, and high-current motor wiring. Maintain appropriate physical separation according to the installation standard governing the control cabinet.\u003c\/p\u003e\n\u003cp\u003eTerminate cable shields according to the project grounding design and avoid creating unintended shield current paths. Verify protective earth and signal reference arrangements before applying field power.\u003c\/p\u003e\n\u003cp\u003eCheck field polarity, supply voltage, termination points, and line-monitoring configuration before placing channels into service. Confirm open-circuit and short-circuit diagnostics under controlled commissioning conditions.\u003c\/p\u003e\n\u003cp\u003eFor hot-swap replacement, follow the Trusted system maintenance procedure and verify module identification, seating, status indication, and diagnostic state after installation.\u003c\/p\u003e","brand":"ICS Triplex","offers":[{"title":"Default Title","offer_id":44036387930202,"sku":"T8402","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/T74881.jpg?v=1788767699","url":"https:\/\/www.plcmasters.com\/products\/ics-triplex-t8402-trusted-tmr-digital-input-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}