{"product_id":"discrete-input-module-foxboro-rh914tr-fbm217-evo","title":"Discrete Input Module | Foxboro RH914TR FBM217 Evo","description":"\u003ch2\u003eFoxboro FBM217 RH914TR Discrete Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro FBM217 RH914TR\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eFBM217\u003c\/strong\u003e Discrete Input Module, operates as a dedicated hardware component for collecting 24 VDC discrete status signals within Foxboro I\/A Series and Evo platforms. The module processes physical contact closures from field switches and transmits binary telemetry directly to the controller across the redundant Fieldbus backplane interface.\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\u003eFoxboro FBM217 RH914TR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.32 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Foxboro FBM Form Factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 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\u003eStandard Backplane Bus Load\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eDiscrete Input Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Type\u003c\/td\u003e\n\u003ctd\u003e24 VDC discrete inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eFoxboro I\/A Series \/ Evo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Channels\u003c\/td\u003e\n\u003ctd\u003eHigh-density discrete input channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Isolation\u003c\/td\u003e\n\u003ctd\u003eChannel-to-channel electrical isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFieldbus Communication\u003c\/td\u003e\n\u003ctd\u003eRedundant Fieldbus interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnostic Functions\u003c\/td\u003e\n\u003ctd\u003eInternal self-diagnostics and status monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eSignal Isolation \u0026amp; Loop Protocol Architecture\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro FBM217 RH914TR\u003c\/strong\u003e utilizes galvanic channel-to-channel isolation to decouple field loops from internal processing logic, preventing transient voltage spikes and ground loops from degrading signal integrity. Integrated hardware filters condition incoming 24 VDC signals by suppressing contact bounce noise from mechanical switches. Internal self-diagnostics monitor operational status continuously and pass state verifications along with field status to the host system via the redundant Fieldbus network.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the Foxboro FBM217 RH914TR support hot-swapping during active baseplate operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes. The module supports online insertion and removal on powered baseplates. Technicians can replace an operational module without disrupting field wiring on surrounding slots or interrupting redundant Fieldbus communications.\u003c\/p\u003e\n\u003cp\u003eQ: How does the channel-to-channel isolation protect the system during field-side wiring faults?\u003c\/p\u003e\n\u003cp\u003eA: Electrical isolation barriers decouple each discrete loop from adjacent channels and internal backplane logic. A short circuit or voltage surge on one field loop remains localized, preventing physical damage to the module bus interface or adjacent channel inputs.\u003c\/p\u003e\n\u003cp\u003eQ: What mechanisms prevent mechanical contact bounce from generating false input transitions?\u003c\/p\u003e\n\u003cp\u003eA: Onboard RC filtering circuitry Damps transient noise and requires field contact voltage to hold a steady state across the threshold interval before updating the discrete input buffer.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eStrict adherence to mechanical mounting and wiring procedures ensures operational stability and preserves electrical isolation:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eAlign the module with the designated baseplate slot and slide it in until the locking mechanism engages the backplane connector completely.\u003c\/li\u003e\n\u003cli\u003eTighten the panel retention screws to secure the module against vibration and establish chassis ground connectivity.\u003c\/li\u003e\n\u003cli\u003eRoute 24 VDC field wiring through dedicated cable ducts, maintaining physical separation from high-voltage AC power lines to avoid inductive noise coupling.\u003c\/li\u003e\n\u003cli\u003eConnect overall signal cable drain wires to the cabinet Earth ground bus bar using a single termination point to prevent circulating ground currents.\u003c\/li\u003e\n\u003cli\u003eCover any unused baseplate slots with standard slot covers to ensure proper cooling airflow across the cabinet enclosure.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43927749099619,"sku":"FBM217 RH914TR","price":190.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/5246\/8067\/files\/251_49abac17-f053-4112-91e8-5c6882055d2f.jpg?v=1767145505","url":"https:\/\/www.autocontrolglobal.com\/products\/discrete-input-module-foxboro-rh914tr-fbm217-evo","provider":"AutoControl Global","version":"1.0","type":"link"}