HONEYWELL TC-PRR021 | Factory-Sealed OEM Replacement

• Model & Brand: HONEYWELL TC-PRR021
• Part / Assembly Number: Commonly associated with 51309288-225; supplier records also reference other suffix variants, so verify the complete nameplate before purchasing.
• Part Type: C200 Redundancy Module (RM).
• System: Honeywell Experion LS / C200 control architecture.
• Chassis Occupancy: 2 chassis slots.
• Physical Dimensions: Approximately 160 × 160 × 120 mm (L × W × H) based on supplier-reported measurements; verify against the actual assembly before cabinet-layout or freight calculations.
• Estimated Unit Weight: Approximately 0.41 kg / 0.90 lb; packed shipping weight will be higher.
• What’s in the Box: TC-PRR021 redundancy module. Terminal blocks, mounting accessories, manuals, and cables should not be assumed unless specifically listed on the commercial packing list.
• Physical Check: Inspect the chassis connector, guide rails, retaining hardware, front label, and PCB enclosure before acceptance.

Product Introduction

The TC-PRR021 occupies two positions in the Honeywell Series-A chassis and forms part of the C200 redundancy architecture. Its physical placement is therefore not interchangeable with a standard single-slot I/O card. The module works alongside the C200 control processor to support redundant operation, making correct chassis configuration particularly important in a live DCS cabinet.

Honeywell documentation identifies the RM as the Redundancy Module supporting C200 redundancy. The published electrical specification is a 24 VDC system interface with approximately 90 mA current draw, while the Series-A chassis provides DC power to installed modules. Check the exact suffix and hardware revision before substitution (especially when maintaining an older Experion installation).

Core Technical Specifications

HONEYWELL TC-PRR021

The Honeywell documentation explains that TC and TK identify coating variants: TC modules are not conformal coated, while TK modules have conformal coating applied. Do not substitute them solely on the basis of the shared base model number.

Global Compliance & Industry Certifications

For the TC-PRR021, certification status should be treated as assembly- and application-specific rather than assumed from generic Honeywell product-family information.

• CE Mark: May apply to the applicable Honeywell equipment/system configuration. Verify the actual marking and Declaration of Conformity.
• UL/cUL: Verify the certification file and intended installation category for the exact hardware revision.
• ATEX/IECEx: Do not assume hazardous-area approval. Such certification must explicitly cover the exact equipment and installation arrangement.
• Marine approvals: DNV GL or equivalent marine certification should only be claimed when supported by documentation for the specific assembly.

For compliance records, retain the nameplate photograph, hardware revision, supplier COO documentation, and applicable certificate with the asset record.

Verify specific lot certifications with OEM.

Long-Term Storage & Asset Preservation Guide

1. Keep the TC- inside an ESD shielding bag. The exposed chassis connector is the component most likely to suffer from handling damage; never place the connector directly against cardboard, metal shelving, or other conductive surfaces.
2. Control humidity below 60% RH where practical. Because the TC version is identified as the non-conformal-coated variant, environmental control deserves more attention than it would for a conformally coated TK counterpart.
3. Record the date code and hardware revision. This is a legacy component, and revision traceability becomes increasingly important as installed systems age. Rotate older stock through inspection rather than allowing unidentified units to remain on the shelf indefinitely.

Physical Installation Prerequisites

• Install the TC- only in the compatible Honeywell Series-A chassis.
• Reserve two chassis slots; do not treat the module as a single-slot I/O device.
• Confirm the redundancy architecture and processor arrangement before energization.
• Inspect the chassis backplane and module guide rails for contamination or mechanical damage.
• Maintain cabinet airflow around the chassis. Where the cabinet drawing does not specify a tighter requirement, 50 mm of free space above and below the chassis is a reasonable planning allowance, but the Honeywell installation drawing takes precedence.
• Confirm cabinet grounding and protective-earth continuity.
• Use ESD controls when inserting or removing the module.
• Do not force the retaining clips or chassis connector into position; mechanical resistance can indicate incorrect slot alignment.

Buyer’s FAQ

Q: What HS tariff code should be used for TC-?

A supplier listing associates TC- with HS code 8537101190, but HS classification is jurisdiction-dependent and should not be copied blindly into customs documentation. Confirm the classification with the customs broker using the actual technical description and destination-country tariff schedule.

Q: Does the Country of Origin matter for this module?

Yes. Supplier listings commonly identify the TC- as U.S.-origin, but the COO for a particular shipment must be supported by the actual supplier documentation. Do not infer COO from the seller’s location.

Q: Should I insure a shipment containing this redundancy module?

For a legacy spare with limited replacement availability, cargo insurance is sensible when the declared value justifies it. Photograph the module, ESD packaging, outer carton, labels, and sealing condition before dispatch.

Q: Does the TC- arrive with the latest firmware pre-loaded?

Do not assume firmware status from the model number alone. The TC- is a redundancy hardware module, not the application processor; verify hardware revision and compatibility against the installed system before commissioning. Honeywell documentation identifies the control processor and redundancy module as separate chassis components.

Asset-control recommendation: Treat the TC- as a controlled redundancy spare, not as a generic PLC card. Record the complete part number, revision, TC/TK coating designation, date code, COO, certification evidence, and measured packed weight. This level of traceability is particularly valuable for legacy Experion systems where a visually similar module may not be an approved replacement.