ALL CATEGORIES

Seller Center
- Product Management
  
  Post Product
  
  Manage Products
  
  Featured Products
- Blog Management
  
  Post Blog Article
  
  Manage Blog Articles
  
  Manage Blog Categories
- Inquiry Management
  
  My Inquiries
  
  Buying Requests
- Analytics Center
  
  Performance Dashboard
  
  Product Analytics
  
  Visitor Analytics
Connect Your Store to WeChat

Follow Our Official Service Account
Manage Products & Inquiries Anywhere
Seller Services

Seller Services

Goldsupplier.com: 20 years of Global Trade Expertise, Empowering Your Business to Go Global!

Join GoldSupplier.com

Free & Instant Registration

Showcase Company & Products

Access Global Buying Requests

Register Now

Activate Verified Supplier Membership

Priority Verified Visibility

Claim Exclusive Buying Requests

Automated Multi-language Store

Verified Now

Launch Your EasyOcean Website

Full-Service Website Management

Google Page 1 Guarantee

Enhanced Brand Credibility

Launch Now
Buyer Services
Post Buying Request

Browse Product Categories

Featured Suppliers
Contact Platform Support

Help Center

Home > Electrical & Electronics > Electrical Control System > HONEYWELL TK-PRR021 51309288-275 REDUNDANCY MODULE

HONEYWELL TK-PRR021 51309288-275 REDUNDANCY MODULE

HONEYWELL TK-PRR021 51309288-275 REDUNDANCY MODULE thumbnail-2

HONEYWELL TK-PRR021 51309288-275 REDUNDANCY MODULE thumbnail-3

HONEYWELL TK-PRR021 51309288-275 REDUNDANCY MODULE photo-1

HONEYWELL TK-PRR021 51309288-275 REDUNDANCY MODULE photo-2

HONEYWELL TK-PRR021 51309288-275 REDUNDANCY MODULE photo-3

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

Get Latest Price

Material:

Other, Global universal model

Certification:

Function:

Other, Global universal model

Contact Supplier Request Quote Chat Now

Guizhou Yuanmiao Automation Equipment Co., Ltd.

Payment & Shipping

Payment Methods:

Port of Shipment:

guizhou

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
Contact Us

Material Other, Global universal model

Certification CE

Function Other, Global universal model

Condition New

Task Other, Global universal model

Mathematical Model Other, Global universal model

Signal Other, Global universal model

Customized Non-Customized

Structure Other, Global universal model

The HONEYWELL TK-PRR021 (part number: 51309288-275) is a core redundancy module under Honeywell’s Experion PKS (Process Knowledge System). Specifically designed for the C200 controller, its core positioning is to "ensure the uninterrupted operation of industrial control systems under extreme working conditions through hardware redundancy and intelligent failover". It is designed in strict compliance with industrial-grade high-reliability standards and is widely used in critical process fields with "zero tolerance for system downtime" such as petrochemicals, oil and gas extraction, and thermal power generation. It serves as the core hardware carrier for Honeywell to achieve "fault-tolerant control".

I. Basic Information & Product Positioning1. Interpretation of Model and Part Number

Honeywell’s industrial control module models and part numbers follow the logic of "function classification + hardware version + adapted system". The meanings of TK-PRR021 and 51309288-275 are broken down as follows:

TK-PRR021: Product model, focusing on functions and adaptability

"TK": A general prefix for modules in the C200 controller series of Honeywell’s Experion PKS system, distinguishing it from the Triconex safety system (prefix "TS");
"PRR": Function code, where "P" = Process Control and "RR" = Redundancy Ready, clearly indicating that it is a dedicated module for redundancy control;
"021": Hardware version number. Version 021 is the second-generation design, which has optimized synchronization speed and fault diagnosis accuracy compared to the first generation (Version 010) and is compatible with the latest C200 controller firmware (V4.0 and above).

51309288-275: Globally unique part number, used for production traceability and spare parts procurement

The first 8 digits "51309288": Basic module code, identifying the "C200 controller redundancy unit";
The last 3 digits "275": Configuration suffix, representing "with standard lithium battery backup + dual power input", distinguishing it from "270" (without battery backup) and "280" (adapted for explosion-proof environments).

2. Physical and Installation Characteristics

As a supporting module for the C200 controller, the physical design of the TK-PRR021 is strictly adapted to Honeywell’s standard I/O rack. The specific parameters are as follows:

Item	Specification Details
Dimensions	178mm (length) × 102mm (width) × 38mm (height), conforming to the "2-slot module" size standard of Honeywell’s C200 series. It occupies 2 consecutive slots in the C200 I/O rack (slot spacing: 32mm);
Weight	Approximately 0.48kg (including housing, circuit board, and lithium battery). It adopts a die-cast aluminum alloy housing (with anodized surface treatment), featuring both impact resistance and electromagnetic shielding capabilities;
Installation Method	Rail-mounted snap-in installation, locked to the rack card slot via spring snaps on both sides of the module. It supports "hot swapping" (in compliance with IEC 61326-1 standard), allowing replacement without powering off the system;
Status Indicators	6 LED indicators (front panel layout), corresponding to: • Main processor status (green = running, red = fault, yellow = synchronizing); • Standby processor status (green = ready, red = fault, yellow = synchronizing); • Power status (green = dual-power supply normal, yellow = single-power supply, red = no power supply); • Battery status (green = sufficient power, yellow = low power, red = battery fault);
Interface Layout	Rear panel interfaces: • 2-way 24V DC power input (terminal type, supporting redundant power supply with reverse connection protection); • 1-way RS-485 communication interface (for data synchronization between main and standby modules); • 1-way test interface (BNC type, for manually triggering redundancy switchover tests); • 1-way battery replacement interface (snap-in type, allowing lithium battery replacement without disassembling the module);

II. Core Technical Parameters (Comprehensive Details)1. Electrical Parameters

The electrical design of the TK-PRR021 focuses on "redundant reliability", supporting dual-power input and backup power supply. The specific parameters are as follows:

Parameter Category	Specification Details
Power Requirements	• Main power supply: 24V DC ±10% (input current: 0.09A @ 24V DC), supporting dual-power input (mutual backup, switchover time • Internal core power supply: +5V DC ±5% (output current: 1.5A, for powering main and standby processors), +3.3V DC ±5% (output current: 1.0A, for powering communication and diagnosis circuits), +1.2V DC ±5% (output current: 0.007A, for powering clock chips);
Battery Backup	• Built-in lithium battery: CR2477 lithium-manganese battery (3V, capacity: 500mAh), non-rechargeable and replaceable independently. It maintains data caching of main and standby modules for 144 hours (at 25℃) after power failure; • Expansion support: Can be externally connected to Honeywell’s BEM (Battery Expansion Module, part number: 51309290-100) to implement rechargeable lithium battery pack backup, extending the battery life to 120 hours (supporting 500 charge-discharge cycles);
Power Consumption	Total power consumption ≤ 15W during normal operation (dual-power supply + battery standby), and instantaneous power consumption ≤ 20W during failover (duration
Insulation and Anti-interference	• Insulation resistance: ≥100MΩ (tested with 500V DC, between power supply and signal terminals); • Surge resistance: Compliant with IEC 61000-4-5 standard, the power supply terminal can withstand a 2kV (8/20μs) surge; • Electromagnetic Compatibility (EMC): Radiation disturbance complies with EN 55011 Class A, and anti-interference complies with EN 61000-6-2 (industrial environment);

2. Redundancy Control Performance

As the core indicator of a redundancy module, the failover and data synchronization capabilities of the TK-PRR021 directly determine system reliability. The specific parameters are as follows:

Performance Indicator	Specification Details
Redundancy Architecture	Adopts a "1+1 hot standby" architecture, i.e., 1 active processor + 1 standby processor. Both operate with real-time synchronization, and the standby processor is in a "hot standby" state (rather than cold backup);
Failover Time	When the active processor fails (e.g., CPU abnormality, communication interruption), the standby processor automatically switches to the active state. The switchover time ≤ 10ms (from fault detection to the standby processor taking over control), which is much lower than the "minimum interruption threshold" allowed in industrial processes (usually 50ms), ensuring no loss of control commands;
Data Synchronization Speed	The main and standby modules achieve data synchronization through the internal RS-485 bus, with a synchronization cycle ≤ 1ms. The synchronized content includes control logic programs, I/O point statuses, PID parameters, alarm records, etc., with a synchronization error
Fault Detection Range	Built-in hardware-level fault detection circuit, capable of detecting the following fault types: • Active processor CPU faults (e.g., program crash, register abnormality); • Power supply faults (main power interruption, voltage over-limit); • Communication faults (communication interruption with I/O modules and upper computers); • Memory faults (RAM data error, ROM verification failure);
Switchover Trigger Modes	Supports 3 trigger modes: • Automatic trigger: Automatic switchover after the hardware detects a fault; • Manual trigger: Manual trigger of switchover via the front-panel "TEST" button or upper computer software (Experion Operator Station) (for regular testing); • Remote trigger: Sending switchover commands via the Modbus protocol (for remote maintenance);

3. Environmental Adaptability

In response to harsh environments in industrial sites (high temperature, vibration, high humidity), the environmental adaptability parameters of the TK-PRR021 are as follows:

Environmental Parameter	Specification Details
Operating Temperature	-40℃ ~ +70℃ (wide-temperature design, adapted for outdoor cabinets in cold regions and high-temperature chemical workshops). When the temperature exceeds this range, a "temperature alarm" is triggered, but the module can still maintain operation (the range of -45℃ ~ +75℃ is the "derated operation zone");
Storage Temperature	-55℃ ~ +85℃ (meeting long-term inventory or transportation requirements);
Relative Humidity	5% ~ 95% RH (non-condensing). The PCB board adopts IPC-CC-830 Class 3 conformal coating (acrylic coating, thickness: 50μm) to prevent erosion by moisture and oil;
Vibration and Shock	• Vibration: Compliant with IEC 60068-2-6 standard, acceleration of 2g (sinusoidal vibration) at 5-150Hz, and acceleration of 5g at 150-2000Hz; • Shock: Compliant with IEC 60068-2-27 standard, acceleration of 10g (11ms half-sine wave, non-operating state) and acceleration of 5g (operating state);

III. Core Functions & Technical Advantages1. Intelligent Redundancy Control (From "Passive Backup" to "Active Fault Tolerance")

The TK-PRR021 is not a simple "active-standby switcher" but achieves "full-link fault tolerance" through hardware-software collaboration. Its core functions include:

Dynamic Load Balancing: During normal operation, the active and standby processors are not in a state of "active busy, standby idle". Instead, through Honeywell’s patented "load sharing algorithm", the standby processor undertakes some non-real-time tasks (such as data log recording and alarm statistics), while the active processor focuses on real-time control (such as PID regulation and logic interlocking), improving the overall system processing efficiency;
Fault Pre-diagnosis: Through the built-in "health monitoring algorithm", it collects real-time parameters of the active and standby processors (such as CPU load, memory usage, and power supply ripple). When the parameters approach the threshold (e.g., CPU load continuously > 90%), an "early warning signal" (non-emergency alarm) is sent to the upper computer in advance, facilitating maintenance personnel to intervene before a fault occurs;
Disturbance-Free Switchover Design: During failover, after the standby processor takes over control, it continues to execute based on the last synchronized "control command snapshot", avoiding sudden changes in control output (such as valve opening jumps and motor start-stop misoperations) caused by switchover, and meeting the "disturbance-free switchover" requirement of industrial processes;
Redundancy Status Visualization: Through the operator interface (HMI) of Experion PKS, real-time information such as the "active-standby status, synchronization progress, fault type, and battery power" of the redundancy module can be viewed, and a "redundancy switchover log" (including switchover time, trigger reason, and switchover duration) can be generated, facilitating post-event traceability.

2. Hardware-Level Safety Design (Resisting Extreme Faults)

To cope with "sudden faults" in industrial sites (such as power surges and electromagnetic interference), the TK-PRR021 has multiple protections at the hardware level:

Dual-Power Isolation: The power circuits of the active and standby processors are completely independent and isolated by optocouplers (isolation voltage: 2500V AC), preventing a fault in one power circuit (e.g., short circuit) from affecting the other. At the same time, the power input terminal is connected in series with a PPTC self-recovering fuse (2A) to prevent circuit board damage due to overcurrent;
Electromagnetic Shielding: The housing is made of aluminum alloy, and the internal circuit board is laid with grounding copper foil to form "double-layer electromagnetic shielding", which can resist radio frequency interference of 10V/m (80MHz-1GHz) (such as EMI generated by inverters and high-voltage motors) and ensure that data synchronization signals are not interfered with;
Battery Leakage Protection: The built-in lithium battery adopts a sealed housing, and a "leakage prevention groove" is designed inside the module. Even if the battery leaks due to aging, it will not contaminate the circuit board or other modules. At the same time, the battery interface is equipped with an "overvoltage protection diode" to prevent damage caused by incorrect high-voltage connection during battery replacement;
Hardware Latching Mechanism: When a "critical fault" (such as simultaneous failure of active and standby processors) is detected, the module triggers "hardware latching", freezes the control output (maintaining the last valid output state), and sends an "emergency shutdown signal" through the relay to prevent the system from entering an "uncontrollable state".

3. Maintenance Convenience Design (Reducing Downtime)

The "maintenance efficiency" of industrial control systems directly affects production continuity. The TK-PRR021 fully considers maintenance needs in its design:

Hot Swapping Function: Supports "live replacement". Maintenance personnel can remove the faulty module and install a new one while the system is running, without powering off the system (replacement time
Easy Battery Replacement: The lithium battery adopts a "snap-in drawer design". The battery can be replaced through the "battery drawer" on the rear panel without disassembling the module housing, with a replacement time
Fault Code Self-Diagnosis: When the module malfunctions, the LED indicators on the front panel flash "fault codes" (e.g., "red-green-red" indicates "active processor CPU fault"). At the same time, the fault code is uploaded to the HMI via the Modbus protocol. With the help of Honeywell’s "Fault Diagnosis Manual", the fault point can be quickly located (e.g., "E03" corresponds to "synchronization bus fault", requiring inspection of RS-485 wiring);
Online Firmware Upgrade: Supports online firmware upgrade of the module through Experion PKS’s "Firmware Management Tool" (no module disassembly required). During the upgrade process, the main and standby modules are upgraded alternately (first upgrade the standby module, then switch the active-standby state and upgrade the original active module), ensuring that the system is not interrupted during the upgrade.

4. System Compatibility (Seamless Integration into Experion PKS)

The TK-PRR021 is not an independent module but an "integral part" of Honeywell’s Experion PKS system. Its compatibility is reflected in:

Controller Adaptability: Only compatible with Honeywell’s C200 controller (firmware version V4.0 and above), and not applicable to C300 or Triconex series controllers;
Software Collaboration: Requires configuration with Experion PKS’s "Control Builder" software (e.g., setting redundancy switchover thresholds and synchronization cycles), monitors redundancy status through "Operator Station" software, and stores redundancy switchover logs through "Historian" software;
I/O Module Collaboration: Achieves "redundancy linkage" with the C200’s I/O modules (such as AI module TK-AI161 and DO module TK-DO161). When the redundancy module switches, the I/O modules automatically synchronize the control commands of the new active processor to ensure consistent I/O point statuses;
Third-Party System Connection: Supports uploading redundancy status data to third-party monitoring systems (such as SCADA) via the OPC UA protocol, meeting the user’s "cross-system monitoring" needs.

Product Tags: TK-PRR021 , 51309288-275 , REDUNDANCY MODULE