Honeywell TC-PRR021 | 51309288-225 | Experion C200 Controller Redundancy Module

Product Description

The TC-PRR021 (51309288-225) is a specialized high-availability component engineered for the Honeywell Experion PKS C200 controller platform. This redundancy module is the hardware foundation for mission-critical process control, enabling synchronized state-mirroring between primary and secondary controller racks. By occupying two physical chassis slots, the unit provides the high-speed data link required to ensure a seamless, bumpless transfer of control logic and I/O status in the event of a processor or power failure in the active rack.

Technical Specifications

• Model Identification: TC-PRR021

• Associated Part Number: 51309288-225

• Primary Function: Controller Redundancy and State Synchronization

• Platform Compatibility: Honeywell Experion PKS C200 Systems

• Operating Voltage: 24 VDC (Internal Backplane Power)

• Current Consumption: 90 mA

• Form Factor: Large-format module occupying 2 Chassis Slots

• Communication Interface: Dedicated redundancy link ports for inter-chassis connection

• Physical Weight: 0.41 kg (approx. 0.90 lbs)

• Lifecycle Status: Discontinued by Manufacturer (Legacy Support available)

System Redundancy and Uptime

The TC-PRR021 (51309288-225) operates by maintaining a constant, high-speed heartbeat and data exchange between two C200 controller pairs. This "Redundancy Cable" link ensures that the standby controller is always updated with the latest process variables and PID loop states. In industrial facilities where process interruption is not an option, this module eliminates single points of failure at the controller level. Its relatively low power draw (90 mA) allows for high thermal stability within the control cabinet, even during intensive data synchronization tasks.

Frequently Asked Questions

• Does this module require a specific redundancy cable?

  Yes, the TC-PRR021 must be connected to its counterpart in the redundant chassis using a dedicated, high-speed redundancy cable (often part of the TC-KRC series) to function correctly.

• Can I use this module in a single-chassis configuration?

  While the hardware will fit, the module's purpose is to manage a pair of chassis. Using it in a non-redundant system is unnecessary as the C200 can operate as a standalone unit without the TC-PRR021 (51309288-225) interface.