{"product_id":"p0931rq-foxboro-i-a-series-datasheet-technical-manual","title":"P0931RQ Foxboro I\/A Series Datasheet \u0026 Technical Manual","description":"\u003ch2\u003eFoxboro P0931RQ Termination Assembly\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eFoxboro P0931RQ\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eP0931RQ\u003c\/strong\u003e Termination Assembly, operates as a dedicated hardware component for field wiring termination and physical signal routing within Foxboro I\/A Series fieldbus communication networks. The unit interfaces directly with Fieldbus Modules via a designated Type 4 DIN FBM cordset cable configuration to establish point-to-point field connectivity.\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\u003eP0931RQ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFoxboro (Invensys)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.46 kg (1.00 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e24.0 cm x 19.8 cm x 5.5 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003ePassive pass-through (Supports 24 VDC redundant input distribution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannels\u003c\/td\u003e\n\u003ctd\u003e32 input\/output points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector Type\u003c\/td\u003e\n\u003ctd\u003eDIN FBM Cordset Connection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTermination Type\u003c\/td\u003e\n\u003ctd\u003eType 4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Types\u003c\/td\u003e\n\u003ctd\u003eVoltage, current, and discrete signals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eIntegrated surge suppression and EMI\/RFI resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eCE, UL, CSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eGalvanic Isolation and Signal Routing\u003c\/h3\u003e\n\u003cp\u003eThe P0931RQ establishes channel-to-channel and channel-to-system galvanic isolation pathways across all 32 processing points. This architecture isolates loop-powered instrumentation networks from core system electronics, suppressing common-mode noise and breaking ground loop currents across the 4-20 mA HART loop protocol paths.\u003c\/p\u003e\n\u003cp\u003eThe onboard passive circuit traces route variable current and voltage loops through localized surge suppression components to clamp transient voltage spikes. This signal-to-system partitioning guarantees that high-voltage spikes introduced on the field-side terminal blocks cannot migrate through the Type 4 DIN FBM cable connector to cause catastrophic failure on adjacent control processing components.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the DIN FBM cordset cable be disconnected from the P0931RQ while field sensors are live?\u003c\/strong\u003e A: Yes. The passive design allows the Type 4 DIN FBM cordset cable to be decoupled from the termination assembly for loop isolation without risking damage to the passive component itself. However, proper care must be taken to ensure that un-terminated field loops do not short-circuit against adjacent chassis metalwork.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the P0931RQ supply auxiliary power to 2-wire transmitters?\u003c\/strong\u003e A: The assembly provides integrated distribution channels for redundant 24 VDC bus inputs. When connected to a compatible power rail, it routes loop power to active 4-20 mA transmitters via the designated field termination screws.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is there any software configuration required for the P0931RQ inside the I\/A Series DCS?\u003c\/strong\u003e A: No. The P0931RQ functions entirely as a passive physical interface and surge suppression routing plane. The DCS identifies only the hosting active Fieldbus Module (FBM), while the baseplate and termination assembly remain transparent to the software environment.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIN-Rail Mounting Stability\u003c\/strong\u003e: Snaps securely onto standard 35 mm DIN-rails. Verify that the grounding clip on the rear of the assembly establishes firm, paint-free mechanical contact with the structural metal rail to guarantee a low-impedance path to ground for the surge protection diodes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShield Grounding and Drain Wire Termination\u003c\/strong\u003e: Field instrument shield wires must be terminated to the designated ground bus bar within the enclosure. Do not daisy-chain shield drain connections across adjacent terminals; maintain point-to-point isolation to minimize EMI\/RFI noise penetration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Screw Torque Specifications\u003c\/strong\u003e: Tighten all field-side terminal block screw connections to a maximum torque of 0.5 N-m to prevent mechanical degradation of the internal printed circuit board solder joints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Routing Separation\u003c\/strong\u003e: Route the high-density Type 4 DIN FBM cordset cable separately from high-voltage AC motor lines or switching inductive loads to prevent inductive noise injection into low-level analog channels.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Foxboro","offers":[{"title":"Default Title","offer_id":43468303433818,"sku":"P0931RQ","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/5957\/0778\/files\/396.1_b2eb1676-249b-4557-920b-f96daeb53e04.jpg?v=1780975762","url":"https:\/\/www.spareoil.com\/products\/p0931rq-foxboro-i-a-series-datasheet-technical-manual","provider":"SpareOil Automation","version":"1.0","type":"link"}