New Original Honeywell TK-PRS021 51404305-375 C200 Controller Processor Module in Stock

Product Details

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FAQs

Q1: What is the primary function of the TK-PRS021?

It is the central processing unit for the Honeywell C200 controller rack. It executes control logic, manages communication between I/O subsystems and the plant network, and coordinates data exchange with operator stations and higher-level systems.

Q2: Is the TK-PRS021 still in production?

No. The C200/C200E series was phased out by Honeywell on December 31, 2020. The module is no longer manufactured and is available only through aftermarket suppliers as legacy/spare-part stock. Honeywell recommends migration to the C300 Controller or ControlEdge UOC for new installations.

Q3: What is the difference between TK-PRS021 and TK-PRS022?

The TK-PRS021 is the C200 version with approximately 8 MB user memory. The TK-PRS022 is the C200E version with 16 MB user memory and K-grade conformal coating for harsh environments. The PRS022 offers greater memory capacity for larger applications.

Q4: Does the TK-PRS021 support redundant configurations?

Yes. The TK-PRS021 supports redundant controller configurations when paired with a second identical module and the appropriate redundancy hardware (e.g., TC-PRR021 redundancy module). This provides hot-standby capability for high-availability applications.

Q5: What should I check before ordering a replacement TK-PRS021?

Verify the complete model number and revision (TK-PRS021 with 51404305-375 suffix) and confirm compatibility with your existing C200 rack configuration. Also check whether your system has been migrated to a newer platform, as the C200/C200E is no longer supported by Honeywell for new installations.