Honeywell TDC 3000 MC-TDIA12 51304439-175 Input Termination
Manufacturer: Honeywell
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Part Number: 51304439-175 MC-TDIA12
Condition：New with Original Package
Product Type: TDC 3000 Spare Parts
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Honeywell MC-TDIA12 (Part Number: 51304439-175) serves as a high-density Digital Input Field Termination Assembly (FTA) for the Experion PKS and TDC 3000 Distributed Control Systems. This module interfaces field-level discrete devices—such as limit switches, push buttons, and proximity sensors—directly with the control network. It manages 32 independent channels, ensuring precise state detection and signal conditioning. We offer this unit as 100% brand new and original, providing the highest level of signal integrity for your critical process automation loops.
Technical Specifications
| Feature | Specification Details |
| Manufacturer | Honeywell |
| Model Number | MC-TDIA12 |
| Part Number | 51304439-175 |
| Channel Capacity | 32 Discrete Digital Inputs |
| Operating Voltage | Nominal 24 VDC |
| Input Type | Dry Contact or Voltage-based (Sourcing/Sinking) |
| Isolation | Galvanic channel-to-channel & channel-to-system |
| Status Monitoring | Individual LED indicators per channel |
| Mounting | Standard Honeywell I/O Rack Mount |
| Operating Temp | −20°C to +60°C |
| Weight | 1.14 kg |
Engineering Advantages
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Superior Noise Rejection: Honeywell engineered the MC-TDIA12 with robust EMI shielding. This prevents high-frequency interference from motors and switchgear from corrupting logic signals, maintaining system uptime in electromagnetically noisy environments.
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Flexible Signal Logic: The module accommodates both sourcing and sinking configurations. This versatility allows engineers to integrate various third-party sensors and field devices without requiring interposing relays or additional hardware converters.
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Galvanic Protection: Integrated channel-to-channel isolation protects the internal DCS backplane from field-side electrical surges. If a fault occurs at a single field point, the isolation prevents the surge from propagating through the entire I/O rack.
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Real-Time Diagnostics: High-visibility LED indicators provide immediate visual confirmation of input states. This feature accelerates loop checking during commissioning and simplifies troubleshooting during unplanned maintenance.
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Environmental Resilience: The industrial-grade construction resists dust accumulation and vibration. These characteristics make the 51304439-175 ideal for deployment in harsh sectors, including oil and gas, chemical processing, and power generation.
FAQs
Does the MC-TDIA12 51304439-175 support both Experion PKS and legacy TDC 3000 systems? Yes. Honeywell designed this FTA to maintain cross-platform compatibility, allowing it to function seamlessly within both Experion PKS environments and older TDC 3000 I/O clusters.
What type of field contacts can I connect to this module? The MC-TDIA12 handles both dry contacts (using internal system power) and voltage-based inputs. You can configure the wiring to support either sinking or sourcing logic depending on your field device requirements.
How does the module signal a channel failure? Each channel features a dedicated LED status indicator. If the controller registers a signal that does not match the field state, or if the LED remains dark during an active input, technicians can quickly identify the specific faulty loop.
Is this unit a refurbished or new surplus item? We guarantee that every MC-TDIA12 51304439-175 we ship is 100% brand new, original Honeywell stock. Each unit arrives in its original factory packaging with full traceability.