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TK-PRS021 51404305-375

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The TK-PRS021 51404305-375 is a Honeywell C200 Control Processor for Series A chassis, providing high-performance process control with redundant capability (via TK-PRR021) for TDC 3000/Experion PKS systems.
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Technical specifications for TK-PRS021 51404305-375

  • Manufacturer:
    Honeywell
  • Part Number:
    TK-PRS021 51404305-375
  • Product Family:
    Honeywell Experion PKS ( C200, C300 )
  • Product Type:
    Processor Module
  • Slots Required:
    2
  • Current Draw @ 24V DC:
    0.005 A
  • Current Draw @ 5V DC:
    1.600 A
  • Current Draw @ 3.3V DC:
    1.300 A
  • Current Draw @ 1.2V DC:
    0.007 A
  • Weight:
    0.5 kg
  • Estimated shipping dimensions:
    6.9x14x14.5cm
  • Tariff Code:
    8517795000
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Application Protection Features Installation and Upgrades

Features:

  • High-performance process control; supports continuous, batch, and discrete control; deterministic execution.
  • Supports hot-standby configuration via TK-PRR021 redundancy module; bumpless switchover for high availability.
  • Interfaces with PMIO via TK-IOLI01; communicates on ControlNet via CNI modules; controls Series A I/O directly.
The TK-PRS021 51404305-375 is the heart of Honeywell's Series A control system. As a C200 processor, it executes complex control strategies with deterministic timing, essential for continuous processes such as chemical reactors, refineries, and power boilers. The processor supports multiple control languages, including ladder logic, function block, and sequential function charts. It occupies two slots in a Series A chassis, which can be a TC-FXX (4,7,10,13,17 slots) or TK-FXX (10,13 slots) model.

High-availability applications demand that no single point of failure shuts down the process. The TK-PRS021 51404305-375 supports redundant operation when paired with the TK-PRR021 redundancy module. In a redundant configuration, two C200 processors run in parallel – one active, one standby. The redundancy module synchronizes the processors and manages bumpless switchover if the active processor fails. This capability is essential for critical processes such as ethylene crackers, FCC units, and turbine control. The switchover time is typically within one control cycle, so the process sees no disturbance.

The TK-PRS021 51404305-375 connects to field devices through multiple pathways. For local I/O, it communicates directly with Series A I/O modules installed in the same chassis, including analog (e.g., TC-IAH061, TC-OAH061), discrete (e.g., TC-IDK161, TC-ORC081), and specialty modules (e.g., TK-MDP081SI serial interface). For larger systems, it interfaces with PMIO (Process Manager I/O) via a TK-IOLI01 I/O Link Module, extending the I/O count far beyond a single chassis.

The TK-PRS021 51404305-375 Honeywell Control Processor module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL)by the manufacturer (OEM).

Honeywell TK-PRS021 51404305-375 Control Processor module Manuals, Datasheets,Drivers,Link Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not included with this equipment unless listed in the above stock item description.All prices are shown in USD.
Honeywell TK-PRS021 51404305-375 Control Processor module Specs

General

  • Manufacturer Honeywell
  • Model TK-PRS021 51404305-375
  • Condition New Original ready stock
  • Product Family TK-PRR021,TC-PNX021
Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not included with this equipment unless listed in the above stock item description.All prices are shown in USD.
  • Energy and Petrochemicals: Pressure and process monitoring in refineries, natural gas processing plants, and power plants.
  • Chemical Industry: Managing complex chemical reaction processes and safety logic.
  • Water Treatment and Environmental Protection: Monitoring flow and pressure in water supply systems and wastewater treatment facilities.
  • Food and Beverage: Ensuring precise control and data acquisition in production lines.
  • Physical Protection: The module surface is covered with a conformal coating to protect against moisture, dust, and corrosive gases.
  • Redundancy Support: Supports redundant configurations; in the event of a primary processor failure, the system automatically switches to a backup processor to ensure uninterrupted control.
  • Battery Backup: An internal lithium battery provides approximately 144 hours (6 days) of data backup time to prevent data loss due to power outages.
  • Installation Requirements: The module is typically installed in an Experion C200 frame, operating at 24V DC.It should be installed in an industrial rack that meets IP rating standards (e.g., IP66) to meet the demanding GX-level environmental conditions.
  • Firmware Upgrades:The most common firmware versions for this module are Rev. K or Rev. H.Upgrades typically require remote configuration and firmware flashing via Control Builder software or a network interface.
Description
The TK-PRS021 51404305-375 is a C200 Control Processor module for Honeywell’s Series A chassis. It is designed for high-performance process control applications within TDC 3000 and Experion PKS systems. The processor occupies 2 chassis slots and supports redundant operation when paired with a TK-PRR021 redundancy module.

When using the TK-PRS021 51404305-375, engineers benefit from deterministic execution of control strategies. The module interfaces with I/O via the I/O Link Module (TK-IOLI01) for PMIO or directly through Series A I/O modules. It communicates on ControlNet networks using CNI modules (TC-CCN014 or TK-CCR014).

The TK-PRS021 51404305-375 has specific current draw: 0.005 A at 24V DC, 1.600 A at 5V DC, 1.300 A at 3.3V DC, and 0.007 A at 1.2V DC. Total power consumption must be calculated per chassis, respecting the limits of the power supply (2.81 A at 24V, 10.0 A at 5V, 4.0 A at 3.3V, 1.5 A at 1.2V). 

For legacy Honeywell system upgrades or repairs, the TK-PRS021 51404305-375 remains a critical spare part. It is listed in Series A chassis documentation and is compatible with TC-CCN014 (single media) or TK-CCR014 (dual media) ControlNet modules. 
Alternative Names
TK-PRR021 TC-PNX021 C200e
Technical notes
The TK-PRS021 51404305-375 is a legacy C200 processor designed for Honeywell TDC 3000 and Experion PKS systems. It is obsolete for new projects. For modern installations, use C300 or C200e processors.The processor occupies 2 chassis slots and requires a TK-PRR021 redundancy module for hot-standby operation.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
Can the TK-PRS021 51404305-375 be used redundantly?
Yes. The TK-PRS021 51404305-375 supports redundant operation when paired with a TK-PRR021 redundancy module. Two C200 processors can run in hot-standby configuration, providing bumpless switchover for high-availability applications such as refinery or power plant control.
What is the current draw of the TK-PRS021 51404305-375?
The TK-PRS021 51404305-375 draws 0.005 A at 24V, 1.600 A at 5V, 1.300 A at 3.3V, and 0.007 A at 1.2V. Total chassis current draw must stay within power supply limits (2.81A @24V, 10A @5V, 4A @3.3V, 1.5A @1.2V).
How does the TK-PRS021 51404305-375 connect to I/O?
The TK-PRS021 51404305-375 interfaces with PMIO (Process Manager I/O) via a TK-IOLI01 I/O Link Module. It can also directly control Series A I/O modules such as analog (TC-IAH061) or discrete (TC-IDK161) modules installed in the same chassis.
Which networks does the TK-PRS021 51404305-375 support?
The TK-PRS021 51404305-375 communicates on ControlNet networks using CNI modules: TC-CCN014 (single media) or TK-CCR014 (dual media). It does not have built-in Ethernet; use a separate Ethernet module (e.g., TK-FTEB01) for TCP/IP connectivity.

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