{"product_id":"ics-triplex-t8442c-trusted-tmr-speed-monitor-module","title":"ICS Triplex T8442C Trusted TMR Speed Monitor Module","description":"\u003cp\u003eConfigured for shaft speed and acceleration monitoring in Trusted ESD and SIS platforms, the \u003cstrong\u003eICS Triplex T8442C\u003c\/strong\u003e (\u003cstrong\u003eT8442\u003c\/strong\u003e TMR Speed Monitor Module) executes turbine over-speed protection and emergency trip functions independently of standard process control loops.\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\u003eT8442C\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\u003eProduct Family\u003c\/td\u003e\n\u003ctd\u003eTrusted TMR System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eTMR Speed Monitor Module\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\u003e30.2 x 26.5 x 3.0 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +70 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eApprox. 40 W to 80 W heat dissipation \/ power range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e20 to 32 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC via backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Integrity Level\u003c\/td\u003e\n\u003ctd\u003eIEC 61508 SIL 3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eArchitecture\u003c\/td\u003e\n\u003ctd\u003eTriple Modular Redundancy (TMR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMonitoring Groups\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Input Channels\u003c\/td\u003e\n\u003ctd\u003e3 TMR channels per monitoring group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Structure\u003c\/td\u003e\n\u003ctd\u003e2 quad-redundant output drive structures per monitoring group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurbine Train Capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 3 separate turbine trains\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Speed Probes\u003c\/td\u003e\n\u003ctd\u003eActive and passive variable reluctance probes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Chassis\u003c\/td\u003e\n\u003ctd\u003eTrusted T8300 Controller Chassis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Input FTA\u003c\/td\u003e\n\u003ctd\u003eT8846\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpeed Output FTA\u003c\/td\u003e\n\u003ctd\u003eT8891\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTMR Safety Monitoring and Trip Execution\u003c\/h3\u003e\n\u003cp\u003eThe T8442C uses Triple Modular Redundancy to process speed and acceleration signals through independent monitoring channels. The architecture supports SIL 3 safety functions, continuous online fault tolerance, self-testing, and hot-swap module replacement.\u003c\/p\u003e\n\u003cp\u003eEach monitoring group provides three TMR speed input channels and two quad-redundant output drive structures. The three groups allow the module to process speed protection functions for up to three separate turbine trains.\u003c\/p\u003e\n\u003cp\u003eThe module operates independently from conventional process control loops. Consequently, over-speed and over-acceleration trip decisions remain assigned to the dedicated safety monitoring path.\u003c\/p\u003e\n\u003cp\u003eSupported inputs include active speed probes and passive variable reluctance sensors. Sensor selection must match the associated T8846 speed input FTA and installed field wiring configuration.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions (FAQ)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What supply voltage does the T8442C require?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The module operates from 20 to 32 VDC, with 24 VDC nominal supply provided through the backplane.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the T8442C be replaced while the Trusted system remains operational?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The supplied data specifies hot-swap replacement capability. Replacement procedures must follow the applicable Trusted system maintenance documentation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many speed monitoring channels are provided?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Each of the three monitoring groups provides three TMR speed input channels, supporting up to three turbine trains.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the T8442C in a compatible Trusted T8300 Controller Chassis and verify correct mechanical seating before energizing the system.\u003c\/p\u003e\n\u003cp\u003eUse the specified T8846 Speed Input FTA and T8891 Speed Output FTA for the corresponding field signal interfaces.\u003c\/p\u003e\n\u003cp\u003eSeparate speed probe wiring from high-current power conductors and switching circuits to reduce electromagnetic interference and induced transients.\u003c\/p\u003e\n\u003cp\u003eMaintain consistent cable shielding and grounding practices according to the Trusted system installation documentation. Avoid creating unintended shield current paths between field termination points and controller chassis grounds.\u003c\/p\u003e\n\u003cp\u003eVerify supply polarity, backplane seating, field termination, and probe wiring before commissioning. Confirm that active and passive variable reluctance sensors match the configured input interface.\u003c\/p\u003e\n\u003cp\u003eAfter installation, perform the applicable diagnostic and channel verification procedures before placing over-speed or over-acceleration protection into service.\u003c\/p\u003e","brand":"ICS Triplex","offers":[{"title":"Default Title","offer_id":44036446257242,"sku":"T8442C","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/T7481A.jpg?v=1788766608","url":"https:\/\/www.plcmasters.com\/products\/ics-triplex-t8442c-trusted-tmr-speed-monitor-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}