Product Overview
The MC-TDIA12 (51304439-175) is a high-density Digital Input Field Termination Assembly (FTA) specifically designed for the Honeywell TDC 3000 and Experion® PKS control systems. Unlike standard 24VDC modules, the MC-TDIA12 is engineered to interface directly with 120VAC discrete field signals, acquiring data from high-voltage switches, motor contactors, and industrial relays. It provides 32 channels of isolated acquisition, converting AC field-side voltage into reliable digital data for the controller backplane. This module is a mechanical necessity for legacy infrastructure and heavy industrial applications where 120VAC control circuits are standard, ensuring that high-voltage sensing does not compromise system integrity or personnel safety.
Detailed Technical Specifications
| Attribute | Details |
| Manufacturer | Honeywell |
| Model Number | MC-TDIA12 |
| Part Number | 51304439-175 |
| Product Type | 120VAC Isolated Digital Input FTA |
| Platform Compatibility | TDC 3000 / Experion PKS |
| Number of Channels | 32 Digital Input Channels |
| Input Voltage Range | 120 VAC Nominal (Operating range typically 90–132 VAC) |
| Isolation | Galvanic channel-to-system and channel-to-channel isolation |
| Diagnostics | Real-time monitoring for circuit integrity and module health |
| Indicators | Front panel LEDs for status of all 32 channels |
| Operating Temperature | 0 °C to +60 °C |
| Dimensions | 46.2 cm x 12 cm x 5 cm |
| Weight | 1.14 kg |
| Humidity Range | 5% to 95% non-condensing |
| Certifications | CE, UL, CSA, IEC compliance |
| Country of Origin | USA |
What's clients say about us
Excellent Emergency Support!
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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
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We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
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Operations Director, GermanyRelated Products
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Guide
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