{"product_id":"honeywell-51309288-375-redundancy-modules","title":"Honeywell 51309288-375 Redundancy Modules","description":"\u003cp\u003eConfigured for high-reliability failover processing and synchronization in Experion PKS DCS platforms, the \u003cstrong\u003eHoneywell 51309288-375\u003c\/strong\u003e (\u003cstrong\u003eTK-PRR021\u003c\/strong\u003e Redundancy Module) provides direct physical\/electrical execution. It establishes deterministic backplane communication to maintain active-standby redundancy across dual controller racks, executing state replication and fault detection without manual intervention.\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\u003e51309288-375 (TK-PRR021)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\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\u003e0.95 lbs (0.43 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard Experion C300 \/ High-Performance Process Manager I\/O 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\u003e7 mA at 3.3 VDC \/ 0.75 A at 3.3 VDC \/ 1 A at 5.1 VDC \/ 90 mA at 24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eRedundancy Controller Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBus Connectivity\u003c\/td\u003e\n\u003ctd\u003eHigh-Speed Redundant Controller Interface \/ Experion Backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003e4-20 mA HART Loop Protocol \u0026amp; Channel Isolation Features\u003c\/h3\u003e\n\u003cp\u003eIn redundant DCS architectures, the TK-PRR021 module ensures transparent state tracking across analog I\/O loops and field communication interfaces. By maintaining high-speed memory synchronization across primary and secondary controller racks, the module guarantees seamless failover without disrupting ongoing 4-20 mA HART loop communications or channel-to-channel isolation barriers. Cold junction compensation (CJC) reference data and analog field status tables are continuously mirrored, ensuring zero bump during hardware switchover.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What are the electrical power consumption draw requirements for the TK-PRR021 across internal backplane rails?\u003c\/p\u003e\n\u003cp\u003eA: The TK-PRR021 draws up to 0.75 A at 3.3 VDC (with a baseline 7 mA logic draw at 3.3 VDC), 1 A at 5.1 VDC, and 90 mA at 24 VDC directly from the backplane power supply distribution rails.\u003c\/p\u003e\n\u003cp\u003eQ: Does the TK-PRR021 support online hot-swapping during active system operation?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module supports live insertion and removal under power (hot-swapping) provided the redundant partner module is fully synchronized and maintaining the active controller state.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eEnsure proper electrostatic discharge (ESD) precautions are observed before handling the module. Attach a grounded wrist strap prior to removing the unit from its protective packaging.\u003c\/li\u003e\n\u003cli\u003eAlign the module card edges with the designated chassis slot guides in the redundancy rack. Press firmly until the backplane connectors seat completely and the retention latches engage securely.\u003c\/li\u003e\n\u003cli\u003eVerify that all cabinet field wiring shields are grounded at a single point to prevent ground loops from interfering with high-speed redundancy communications across the rack chassis.\u003c\/li\u003e\n\u003cli\u003eCheck that backplane supply voltage levels remain within nominal limits under load (3.3 VDC, 5.1 VDC, and 24 VDC) prior to commissioned online switchover testing.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45431085269107,"sku":"51309288-375","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/4348\/2227\/files\/51309288-375.png?v=1788231501","url":"https:\/\/www.dcssupplier.com\/products\/honeywell-51309288-375-redundancy-modules","provider":"DcsSupplier Limited","version":"1.0","type":"link"}