{"product_id":"t8451-ics-triplex-trusted-tmr-digital-output-module","title":"T8451 ICS Triplex Trusted TMR Digital Output Module","description":"\u003cp\u003eConfigured for high-integrity discrete load switching in safety-critical ESD and shutdown systems, the \u003cstrong\u003eICS Triplex T8451\u003c\/strong\u003e (\u003cstrong\u003eT8451\u003c\/strong\u003e Digital Output Module) provides direct physical\/electrical execution. The module drives up to 40 field-side channels partitioned into 5 independent power groups over an operational voltage range of 18 VDC to 32 VDC.\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\u003eT8451\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\u003e1.13 kg (Shipping Weight: 3.0 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e300 mm x 30 mm x 241 mm (11.8 in x 1.2 in x 9.5 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 (+23 deg F to +140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 W (System Supply) \/ 24 W (Field Supply @ 1 A\/ch)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Supply Voltage\u003c\/td\u003e\n\u003ctd\u003e20 VDC to 32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperational Field Voltage\u003c\/td\u003e\n\u003ctd\u003e18 VDC to 32 VDC (Max Withstanding: -1 VDC to +40 VDC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e40 Channels (5 Power Groups of 8 outputs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous Current Rating\u003c\/td\u003e\n\u003ctd\u003e2 A per channel (Max 8 A per power group)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum On-State Load\u003c\/td\u003e\n\u003ctd\u003e50 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Resistance\u003c\/td\u003e\n\u003ctd\u003e0.6 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Turn-On\/Off Delay\u003c\/td\u003e\n\u003ctd\u003e0.5 ms\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\u003eField Common Isolation\u003c\/td\u003e\n\u003ctd\u003e+\/-250 VDC Sustained Working \/ +\/-2.5 kVDC Max Withstanding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Humidity\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHigh-Reliability Safety Control \u0026amp; TMR Architecture\u003c\/h3\u003e\n\u003cp\u003eThe T8451 incorporates a triple modular redundancy (TMR) 2oo3 fault-tolerant architecture to achieve SIL3 certification within high-availability safety execution loops. Triplicated output channels utilize internal voter circuits and automatic electronic latching short-circuit protection to maintain continuous fail-safe state execution without dropping active control loops. Field-common galvanic isolation rated at +\/-250 VDC sustained working voltage suppresses cross-talk and ground potential shifts, ensuring process field outputs execute deterministic shutoff logic during system fault events.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the current distribution limits per channel and per power group on the T8451 module?\u003c\/p\u003e\n\u003cp\u003eA: Each individual output channel supports a maximum continuous load of 2 A, with the total combined load capped at 8 A per power group across the 5 independent output groups.\u003c\/p\u003e\n\u003cp\u003eQ: How does the T8451 respond to an overcurrent or output short-circuit condition?\u003c\/p\u003e\n\u003cp\u003eA: The module features automatic, electronic latching short-circuit protection that isolates the faulted channel to protect output switching hardware and surrounding control circuitry.\u003c\/p\u003e\n\u003cp\u003eQ: Is external isolation required for installation of the T8451 in hazardous location field loops?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module does not contain built-in intrinsic safety barriers; external Ex-i barriers must be wired in series with field loops requiring intrinsic safety protection.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eIsolate field power and verify the 18 VDC to 32 VDC field voltage source before inserting the module into the active chassis slot.\u003c\/li\u003e\n\u003cli\u003eEnsure field load currents remain above the 50 mA minimum on-state threshold to maintain valid channel diagnostic state sensing.\u003c\/li\u003e\n\u003cli\u003eRoute field output cables away from high-voltage AC lines to maintain channel-to-channel crosstalk suppression better than -40 dB.\u003c\/li\u003e\n\u003cli\u003eSecurely seat the module retaining hardware into the rack frame to guarantee low-impedance frame grounding and continuous +\/-2.5 kVDC isolation withstand capability.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"ICS Triplex","offers":[{"title":"Default Title","offer_id":53221963399477,"sku":"T8451","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/T8480_0cfc006a-668c-4565-b88e-5e1201155ddc.png?v=1785226743","url":"https:\/\/www.5gplc.com\/products\/t8451-ics-triplex-trusted-tmr-digital-output-module","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}