Description
The Honeywell TK-PRR021 (Part Number 51309288-275) is a specialized Redundancy Cable designed for the Experion® PKS (Process Knowledge System) series. It is used specifically to link redundant Input/Output Termination Assemblies (IOTAs) for C300 controllers or Series C I/O modules.
Product Parameters (Datasheet)
- Model Number: TK-PRR021
- Part Number: 51309288-275
- Cable Type: Redundancy Link Cable (Shielded)
- Function: Synchronizes data between Primary and Secondary IOTAs
- Length: Standard length for adjacent mounting (typically 0.2 meters / 8 inches)
- Connector Type: Specialized high-density connectors for Series C hardware
- Compatibility: Used with Series C I/O and C300 Controllers
- Redundancy Level: Supports 1:1 hardware redundancy
HONEYWELL TK-PRR021 51309288-275
HONEYWELL TK-PRR021 51309288-275
HONEYWELL TK-PRR021 51309288-275
Country of Origin
This component is engineered and manufactured by Honeywell Process Solutions in the USA, adhering to global standards for critical process control infrastructure.
Application Fields
The TK-PRR021 is a vital link in ensuring high availability for industrial processes:
- Refining & Petrochemical: Ensuring continuous monitoring of hazardous processes where a controller failure cannot be tolerated.
- Power Generation: Linking redundant C300 controllers managing boiler and turbine safety logic.
- Pharmaceutical Manufacturing: Maintaining data integrity and batch continuity in validated environments.
- Offshore Platforms: Providing robust redundancy for remote control systems in harsh environments.
- Water Treatment: Ensuring 24/7 operation of critical chemical dosing and filtration systems.
Product Usage Instructions
- Placement: Identify the Primary and Secondary IOTA boards mounted on the Series C carrier. These are typically mounted side-by-side or vertically adjacent.
- Connection: Plug one end of the TK-PRR021 into the “Redundancy” port of the Primary IOTA and the other end into the corresponding port on the Secondary IOTA.
- Security: Ensure the connectors are fully seated and the locking mechanisms (if present) are engaged to prevent accidental disconnection due to vibration.
- Verification: Check the Experion® System Management Console (SMC) or the hardware LEDs. The “Secondary” module should show a “Standby” or “Synced” status once the cable is connected.
- Cable Routing: Ensure the cable is routed neatly within the carrier channel to avoid interference with field wiring or other communication cables.
Product Technical Description
Technically, the TK-PRR021 provides the physical path for the Redundancy Link. This link is used for real-time synchronization of the database and memory images between the two controllers or I/O modules. By using this dedicated cable, the system ensures that if the Primary hardware fails, the Secondary hardware has an identical copy of the process state and can take over control in milliseconds (bumpless transfer). The shielded design of the 51309288-275 cable is critical for preventing electromagnetic interference from corrupting the high-speed synchronization data.
Q&A (Common Questions)
Q: Can I use a standard Ethernet cable instead of the TK-PRR021? A: No. The TK-PRR021 uses a proprietary pinout and specialized connectors designed specifically for the Series C IOTA hardware. A standard cable will not fit and could damage the pins.
Q: What is the difference between TK-PRR021 and similar “PRR” cables? A: The difference usually lies in the length or the specific revision. Part number 51309288-275 is the specific 0.2m version for adjacent IOTAs. Longer versions are available if the redundant modules are separated by a greater distance.
Q: My redundant module is showing “Backup Disconnected.” Is the cable faulty? A: It is possible. First, try re-seating both ends of the cable. If the error persists, check for bent pins on the IOTA ports or test with a known good TK-PRR021 cable.
Q: Does this cable carry power to the modules? A: No, the TK-PRR021 is for data synchronization only. Power is supplied to the IOTAs through the carrier backplane or separate power terminals.
Similar Model Recommendations
- Honeywell TK-FTEB01 (Control Firewall for C300)
- Honeywell 51309288-375 (Longer version of the redundancy cable)
- Honeywell CC-PCF901 (C300 Controller Module)
- Honeywell CC-TBTB01 (Standard IOTA for Series C)
- Honeywell TK-PRR011 (Legacy redundancy cable version)
For technical support or to procure the Honeywell TK-PRR021, please contact our process control specialists.
