Description
- Honeywell TC-PRS021 C200 | Control Processor Module
2. Unboxing & Physical Snapshot
- Model & Brand: Honeywell TC-PRS021, C200 Control Processor Module; alternate part references include 51404305-225 and TC-PRS021/E. Honeywell’s own documentation identifies TC-PRS021 as the C200 Control Processor.
- Physical Dimensions: Approximately 71 × 147 × 135 mm (W × H × D) based on published module shipping specifications. Dimensions should be rechecked against the actual revision before cabinet planning.
- Estimated Shipping Weight: Allow approximately 2–3 kg packaged for freight calculations. Published module weights range from approximately 0.5–0.57 kg net, while supplier shipping weights are listed as 2–3 kg.
- What’s in the Box: Control Processor Module; battery arrangement depends on the supplied revision and configuration. Original Honeywell documentation specifically states that the lithium battery is disconnected during shipment.
- Identification Check: Verify the front-panel model label, serial/date code, hardware revision, and part number before installation.
3. Product Introduction
The Honeywell TC-PRS021 C200 Control Processor is a chassis-based processor used within the Experion PKS C200 controller architecture. It installs as a plug-in module within the C200 chassis rather than functioning as a standalone DIN-rail PLC. The controller chassis accommodates the processor alongside communication, redundancy, and other control-system modules (the physical slot arrangement matters during replacement).
From an asset-management perspective, identity control is more important than cosmetic condition. TC-PRS021 is documented as a 4 MB user-memory C200 CPM, while the later C200E processor uses a different model, Tx-PRS022, with 16 MB of user memory. Do not substitute these based solely on mechanical fit.
4. Core Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Honeywell |
| Model | TC-PRS021 |
| System | Experion PKS C200 |
| Product Type | Control Processor Module |
| Alternate Part Numbers | 51404305-225; TC-PRS021/E |
| User Memory | 4 MB |
| Module Supply | +5 VDC ±5% @ 1.5 A; +3.3 VDC ±5% @ 1.0 A |
| Approx. Module Power | 11 W nominal from the specified rails |
| Mounting | C200 chassis plug-in module |
| Controller Configuration | Non-redundant or redundant C200 configurations |
| Backup | 1/2AA lithium battery or Battery Extension Module |
| Lithium Battery Backup | 144 hours / 6 days |
| BEM Backup | 120 hours / 5 days |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Relative Humidity | 5–95%, non-condensing |
| Approx. Physical Size | 71 × 147 × 135 mm |
| Approx. Net Weight | 0.5–0.57 kg |
| Primary Architecture | C200 controller / Experion PKS |
| Remote I/O Connectivity | ControlNet-based architecture |

Honeywell TC-PRS021 C200
The power figures above are rail requirements rather than a manufacturer’s single published wattage rating; therefore, do not use 11 W as a certified thermal-dissipation figure without checking the applicable hardware revision. Honeywell’s specification identifies the two required DC rails directly.
5. ? Global Compliance & Industry Certifications
Honeywell documentation for the C200 controller family identifies the following agency and regulatory compliance framework:
- CE Mark — European regulatory conformity for the applicable product configuration.
- UL 508 — Industrial Control Equipment.
- CSA — Canadian industrial control equipment requirements.
- FM — hazardous-location/non-incendive applications where the specific marked configuration permits it.
- C-Tick — Australian EMC compliance under the documentation applicable to the product generation.
- ISA S12.12 — referenced for non-incendive equipment used in specified hazardous locations.
For hazardous-area deployment, the certification marking is not a paperwork detail. A Class I, Division 2 approval, where specifically applicable to the exact hardware configuration, establishes suitability for the defined hazardous location under the associated installation conditions.
Do not infer ATEX, IECEx, or DNV GL marine approval merely from the C200 family designation. Those approvals must be established from the actual nameplate, certificate, or OEM documentation for the particular hardware revision.
Verify specific lot certifications with OEM.
6. ? Long-Term Storage & Asset Preservation Guide
- Keep the processor in its original ESD shielding bag. The TC-PRS021 contains exposed electronic assemblies and chassis connectors; repeated handling outside ESD protection increases the risk of latent damage. Store it sealed until the maintenance window requires installation.
- Control warehouse humidity. Maintain approximately 5–95% RH non-condensing, but for long-term spare-parts storage, keeping the storage environment comfortably below 60% RH is a prudent preservation target. Avoid temperature cycling that can produce condensation on the metal chassis and PCB assemblies. Honeywell specifies -40°C to 85°C storage capability for the C200 controller environment.
- Inspect the lithium-battery condition before commissioning. The CPM uses a replaceable lithium battery for controller backup, and Honeywell specifies approximately six days of backup for the standard non-rechargeable battery. The battery is disconnected during shipment; verify its shipping position and condition before energizing the module. If a Battery Extension Module is installed, the built-in lithium battery must be removed rather than operated simultaneously.
Check the date code. For a legacy C200 spare, battery condition and connector integrity are often more meaningful acceptance criteria than whether the enclosure still looks new.
7. Physical Installation Prerequisites
- Install the TC-PRS021 in the designated C200 chassis slot; Honeywell documentation identifies slots 1 and 2 as the default CPM location, subject to the actual chassis configuration rules.
- This is a chassis-mounted plug-in module, not a conventional DIN-rail device. Confirm the backplane connector and retaining hardware are clean and undamaged before insertion.
- Maintain the manufacturer’s cabinet/chassis clearances. Published Honeywell C200/Experion chassis guidance specifies approximately 152 mm (6 in.) vertical clearance from chassis to cabinet and 203 mm (8 in.) between chassis vertically, with horizontal clearance requirements also specified.
- Provide a properly bonded cabinet grounding system and ensure the chassis is correctly grounded before connecting the processor.
- Remove power before inserting or removing the CPM. The installation documentation specifically calls for confirming that no power is applied to the chassis and for taking ESD precautions before installation.
8. Buyer’s FAQ
Q: What HS tariff code should be used for international shipment?
A published supplier classification lists 8537109060 for TC-PRS021, while another distributor lists the broader HS 853710 category. The correct declaration depends on the importing country’s tariff schedule and the actual product classification. Treat these as reference classifications, not a universal customs ruling.
Q: Does Country of Origin affect this spare part?
Yes. One published product record identifies the country of manufacture as the United States, but COO should be established from the actual unit, manufacturer’s documentation, or supplier-origin declaration. Do not copy COO from an old commercial invoice when the physical unit has a different manufacturing record.
Q: Should I insure the shipment?
For a legacy controller processor, shipment insurance is advisable. The module itself may weigh only about 0.5 kg, yet its replacement value can be substantial; use shock-resistant packaging, ESD protection, and adequate cushioning rather than relying on the low net weight.
Q: Does TC-PRS021 ship with the latest firmware pre-loaded?
Do not assume it does. TC-PRS021 is a legacy C200 processor, and the hardware model alone does not establish the installed firmware or controller database revision. Record the module’s firmware/hardware revision during incoming inspection and verify compatibility with the site’s Experion PKS release before installation.



Start Chat