Honeywell MC-TDIDI2 51304441-175 High-Density DI Board
Manufacturer: Honeywell
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Part Number: MC-TDIDI2 51304441-175
Condition：New with Original Package
Product Type: Digital Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Product Overview
The Honeywell MC-TDIDI2 (Part Number 51304441-175) is a high-density digital input (DI) module designed for Honeywell Experion PKS, TPS, and TDC 3000 distributed control systems. This module serves as the primary interface for capturing discrete signals from field devices such as pushbuttons, limit switches, and relay contacts. By providing 32 independent channels, it optimizes rack space while ensuring high-fidelity signal acquisition for mission-critical automation loops. We supply this component as 100% brand new and original, maintaining the integrity of your fault-tolerant architecture.
Technical Specifications
| Parameter | Specification Details |
| Model Number | MC-TDIDI2 |
| Part Number | 51304441-175 |
| Channels | 32 Independent Digital Inputs |
| Input Signal Range | 24 VDC Nominal |
| Isolation | Channel-to-Channel & System Isolation |
| Update Rate | ≤25 ms per channel |
| Power Consumption | 6–8 W (Load dependent) |
| Operating Temperature | –20°C to +55°C (Extended versions to +70°C) |
| Dimensions | 31.3 cm × 27.8 cm × 3 cm |
| Weight | 0.56 kg |
| Certifications | CE, UL, RoHS, IEC EMC |
Engineering Advantages
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Maximum Channel Density: The 32-channel configuration doubles the input capacity of standard modules, significantly reducing the number of required I/O racks and lowering overall hardware costs for large-scale deployments.
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Superior Noise Immunity: Advanced filtering circuitry allows the module to recognize logic states accurately even in environments with heavy electromagnetic interference (EMI). This prevents "ghost" signals from triggering false alarms or process shutdowns.
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Comprehensive Fault Diagnostics: The onboard processor executes continuous self-tests and monitors channel health. It detects field-side wiring faults and internal circuit failures instantly, reporting them to the Experion PKS console for immediate corrective action.
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Redundancy Support: The hardware architecture natively supports redundant configurations. This ensures that the acquisition of discrete signals continues uninterrupted even if a single module or power path fails, supporting "Six Nines" availability targets.
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Ruggedized Protection: Integrated surge and reverse polarity protection shield the internal electronics from field-side wiring errors or power fluctuations, extending the service life of the module beyond 10 years in continuous operation.
FAQs
Q: Can I use the MC-TDIDI2 in legacy TDC 3000 systems?
A: Yes. The MC-TDIDI2 maintains full backward compatibility with TDC 3000 and TPS architectures, as well as modern Experion PKS platforms. It acts as a direct-fit replacement for older 32-point DI boards.
Q: Does this module require a specific terminal block?
A: This module mounts into standard Honeywell system racks. It connects to field wiring via specific Field Termination Assemblies (FTAs) designed for 32-channel DI modules to ensure proper signal isolation and grounding.
Q: How does the module handle signal debounce?
A: The module utilizes hardware and software filtering to provide a stable update rate of ≤25 ms. This effectively filters out contact chatter from mechanical switches, ensuring only valid state transitions are processed by the controller.
Q: Is this a refurbished or surplus unit?
A: No. We offer only 100% brand new Honeywell equipment. The unit ships in original factory packaging with full traceability, ensuring you receive the latest engineering revisions for your facility.