Digital guide
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Honeywell 51204160-175
Product Name: Digital Input Field Termination Assembly (FTA, alternate: MC-TDIY22)
Overview: A critical Digital Input Field Termination Assembly (FTA) designed for use within Honeywell’s TDC 3000 Distributed Control System architecture. Serves as the core interface between field instruments and the DCS controller for reliable discrete signal acquisition in process-critical environments.
Detailed content
Technical Specifications:
- Module Type: PC Board Digital Input Field Termination Assembly (FTA)
- Compatible System: Honeywell TDC 3000 DCS
- Signal Type: Discrete / Digital Input
- Input Channels: 22 Digital Input Channels
- Input Voltage Range: 24 VDC (nominal)
- Isolation: Optical isolation per channel
- Mounting: Card cage / rack-mount, DIN-compatible
- Operating Temperature: 0°C to 60°C
- Humidity: 5% to 95% RH, non-condensing
- Weight: Approx. 550 g
- Compliance: CE, RoHS (where applicable to legacy hardware)
Key Features:
- High-Density Discrete Signal Acquisition: 22-channel capacity reduces panel footprint and wiring complexity in TDC 3000 installations
- Per-Channel Optical Isolation: Meets IEC 61131-2 requirements for input isolation, protecting controller backplane from field-side transients and ground loops
- Plug-and-Play TDC 3000 Compatibility: Direct replacement for existing MC-TDIY22 installations — no firmware changes or reconfiguration required
Application Areas: Refining, petrochemical, and power generation facilities requiring reliable discrete signal acquisition.
Installation Requirements: Card cage / rack-mount, DIN-compatible.
Usage Notes: Genuine OEM hardware recommended. Due to the module’s age and limited production runs, verify part number, revision level, and serial/batch codes against Honeywell’s published documentation to avoid counterfeit replacements.
