Honeywell Redundancy Module TK-PRR021 51309288-275 51309283-300

Product Overview
The TK-PRR021 (Part Number: 51309288-275) is a specialized Redundancy Module (RM) for the Honeywell Experion PKS platform. It enables high-availability controller configurations by managing synchronization and seamless failover between primary and secondary C200 controllers. Through real-time data mirroring, this module ensures that hardware or power failures in the active processor do not disrupt industrial process continuity.

Designed for installation in a Series-A chassis, the TK-PRR021 occupies two slots and interfaces directly with the backplane to monitor the status of paired controllers. It is a critical component for safety-instrumented systems and high-uptime environments such as petrochemical refining, chemical processing, and large-scale power generation.

Technical Specifications

Application Scenarios

• Implementing redundant C200 controller pairs in DCS environments

• Enabling fault-tolerant networking for mission-critical process loops

• Ensuring zero-downtime control transitions in hazardous area installations

Frequently Asked Questions (FAQ)

Q: What is the difference between the TK-PRR021 and the TK-FTEB01?
A: The TK-PRR021 is a dedicated controller redundancy module for hardware-level failover, while the TK-FTEB01 serves as a Fault-Tolerant Ethernet (FTE) bridge for network-level redundancy.

Q: Does this module require external power?
A: No. The TK-PRR021 draws all required voltages (24V, 5V, 3.3V, and 1.2V) directly from the Series-A chassis backplane.