Honeywell MC-TAOX52 51304335-275 — Thermocouple/mV Analog Output Module | TotalPlant Solution (TPS) / TDC-3000
Engineering Background
The Honeywell TotalPlant Solution (TPS) and TDC-3000 platforms have been the backbone of process automation in refining, petrochemical, and power generation facilities for decades. Within this architecture, the MC-TAOX52 (P/N 51304335-275) serves as a precision analog output module, converting digital control signals from the High-Performance Process Manager (HPM) into calibrated 4–20 mA or thermocouple/mV analog outputs for field actuators and final control elements.
Product Positioning
Designed for engineers maintaining or expanding legacy TPS/TDC-3000 control systems, this module provides a direct, validated replacement path without requiring system reconfiguration or firmware upgrades. It is the preferred choice for facilities prioritizing uptime continuity over full DCS migration.
Complete Technical Specifications
| Manufacturer | Honeywell Process Solutions |
| Part Number | MC-TAOX52 |
| Revision / Suffix | 51304335-275 |
| Module Type | Analog Output (Thermocouple / mV) |
| Compatible Platform | TotalPlant Solution (TPS), TDC-3000, HPM |
| Output Channels | Up to 8 channels (configuration-dependent) |
| Output Signal Type | 4–20 mA / Thermocouple / mV analog |
| Communication Bus | Universal Control Network (UCN) / Local Control Network (LCN) |
| Power Supply | Supplied via HPM backplane (24 VDC nominal) |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Humidity | 5% to 95% RH, non-condensing |
| Form Factor | Standard TPS I/O card, DIN-rail compatible chassis |
| Weight | 520 g |
| Certifications | CE, UL (per original Honeywell certification) |
| SKU | MC-TAOX52 51304335-275 |
Proven Application Environments
- Petroleum Refining: Crude distillation unit (CDU) and vacuum distillation unit (VDU) temperature and flow control loops
- Petrochemical Plants: Reactor temperature profiling and feed-forward control in ethylene and polyethylene units
- Power Generation: Boiler combustion control and turbine governor signal conditioning
- Pulp & Paper: Digester temperature control and recovery boiler management
- Pharmaceutical: Validated batch process temperature output in GMP-compliant environments
- LNG / Gas Processing: Cryogenic process analog output for valve positioner control
Engineering Advantages
- Drop-in Compatibility: Fully backward-compatible with existing TPS/TDC-3000 HPM chassis — no firmware changes or re-engineering required
- High Output Accuracy: Precision D/A conversion ensures tight loop control with minimal drift over extended operating cycles
- Hot-Swap Capable: Supports online replacement in redundant HPM configurations, minimizing process interruption
- Diagnostic Transparency: Integrated self-diagnostics report module health to the operator console via UCN/LCN status registers
- Long Service Life: Industrial-grade components rated for continuous 24/7 operation in harsh process environments
System Architecture & Signal Flow
Within the TPS architecture, the MC-TAOX52 resides in the HPM I/O subsystem. The control strategy executes in the HPM processor, which writes setpoint values to the module’s output registers over the backplane bus. The module performs digital-to-analog conversion and drives the field wiring terminals with the corresponding mA or mV signal. Fault detection logic continuously monitors output integrity and reports exceptions to the system historian and alarm management layer.
[HPM Processor] → [UCN/LCN Backplane] → [MC-TAOX52 Output Card] → [Field Terminals] → [Control Valve / Actuator]
Sourcing & Quality Verification
- All units sourced from decommissioned plant inventories or authorized surplus channels — no counterfeit risk
- Each module undergoes visual inspection, board-level cleaning, and functional power-on verification prior to shipment
- Original Honeywell labels, revision markings, and serial numbers are intact and unaltered
- Packaging: anti-static ESD bag + foam-lined carton, suitable for international air freight
- Condition: Refurbished / Tested — stated explicitly; new-in-box units available upon request (lead time applies)
Procurement Process
- Confirm Part Number: Verify your HPM chassis slot assignment and required revision suffix (275 or alternate) against your TPS engineering drawings
- Request Quote: Contact support@konmask.com for volume pricing, lead time, and export documentation (CO, test report)
- Order & Payment: T/T bank transfer, PayPal, or trade assurance accepted; proforma invoice issued within 24 hours
- Shipping: DHL / FedEx / UPS express; EXW Xiamen or CIF destination port available; typical transit 3–7 business days
- Incoming Inspection: We recommend bench-testing the module in a spare HPM chassis before installation in a live process unit
Technical FAQ
Q: Is the MC-TAOX52 compatible with the TDC-3000 as well as TPS?
A: Yes. The module is electrically and mechanically compatible with both TDC-3000 and TPS HPM I/O chassis. Verify your chassis backplane revision for any slot-specific restrictions.
Q: Can this module be used in a redundant HPM configuration?
A: Yes. When installed in a redundant HPM pair, the module supports bumpless transfer and online replacement per Honeywell’s redundancy specifications.
Q: What is the difference between suffix -275 and other suffixes?
A: The suffix denotes the hardware revision and factory configuration. Suffix -275 is a specific validated revision; consult your TPS system documentation or contact us to confirm interchangeability with other suffixes in your application.
Q: Do you provide a test report or certificate of conformance?
A: Yes. A functional test report is available upon request. Certificate of conformance (CoC) and country of origin documentation can be provided for customs and QA purposes.
Q: What is your warranty policy?
A: All tested/refurbished modules carry a 90-day functional warranty. DOA claims are accepted within 7 days of receipt with photographic evidence.
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