{"product_id":"honeywell-tk-prr021-redundancy-module","title":"Honeywell TK-PRR021 Redundancy Module","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Honeywell TK-PRR021 is a high-reliability hardware component engineered to facilitate failover synchronization within the Experion PKS and TDC 3000 Distributed Control Systems (DCS). Specifically designed for the C300 controller series, this module enables a dual-processor architecture where a secondary unit stands ready to take over process execution instantly should the primary unit encounter a fault. By managing the high-speed data exchange between paired controllers, the TK-PRR021 ensures a \"bumpless\" transfer, meaning industrial processes continue without interruption or loss of state. Its design allows for direct side-attachment to the controller base, preserving valuable cabinet space while providing a robust backbone for mission-critical automation loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Performance and Hardware Profiles\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperational Role:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eController Failover and Redundancy Management\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSystem Voltage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports up to 24V DC power distribution\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInterface Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDirect-mount side connection (Non-chassis dependent)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStatus Monitoring:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIntegrated diagnostics for primary\/backup health tracking\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSwitchover Logic:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSub-millisecond \"bumpless\" transfer capability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHoneywell Experion C300 \/ TDC 3000 Systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePhysical Weight:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e0.46 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUnit Dimensions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e6.9 x 14.1 x 14.5 cm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturing Origin:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUSA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHS Tariff Classification:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e8537101190\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModule Condition:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBrand New Factory Stock\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIndustrial Resilience Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe TK-PRR021 is an indispensable asset for heavy industries where even a few seconds of downtime can result in significant financial loss or safety hazards. In petrochemical refineries and offshore oil platforms, it manages the redundancy for critical safety interlocks and valve controls. Within power generation facilities, it ensures the continuous monitoring of turbines and boilers by maintaining the active state of the control database across dual controllers. Its ability to support both redundant and non-redundant power configurations provides engineers with the flexibility to design resilient infrastructures tailored to specific risk profiles, ensuring maximum uptime for complex, high-throughput manufacturing environments.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the TK-PRR021 require a dedicated slot in the I\/O rack?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: No, the TK-PRR021 is designed to connect directly to the side of the C300 controller or its carrier, which allows you to implement redundancy without consuming a standard chassis or I\/O slot.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What happens to the process during a switchover managed by this module?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The module facilitates a \"bumpless\" transfer, meaning the backup controller has a real-time copy of the primary controller's memory. The transition is instantaneous, and field actuators do not see any change in signal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the TK-PRR021 be used with older TDC 3000 equipment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, this module is engineered for cross-compatibility between the legacy TDC 3000 architecture and the modern Experion PKS C300 controller platform, providing a reliable bridge for system upgrades.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the module hot-swappable if it needs to be replaced?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: Yes, in a fully redundant configuration, the TK-PRR021 and its associated controllers are designed to be serviced or replaced while the other half of the pair maintains process control, preventing system-wide downtime.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the module indicate which controller is currently the primary?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA: The module features visual indicators that work in tandem with the C300 controller's display to show the active\/ready status of the redundant pair, allowing for quick visual verification by technicians.\u003c\/p\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":45518939455661,"sku":"TK-PRR021","price":199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/honeywell-tk-prr021-redundancy-module-l1xfb15p4fb.jpg?v=1766982389","url":"https:\/\/www.maxwellplc.com\/products\/honeywell-tk-prr021-redundancy-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}