Product Details
Product Description
The MC-TDIY22 (51204160-175) is a robust Digital Input Field Termination Assembly (FTA) specifically engineered for the Honeywell High-Performance Process Manager (HPM) and Experion PKS control environments. This module serves as a specialized electrical interface, allowing high-voltage 120VAC field signals to be safely monitored by the system's digital input processors. Designed for high-density industrial applications, the MC-TDIY22 provides essential signal conditioning and isolation, ensuring that discrete status data from field-mounted switches and contacts is accurately captured without risking damage to the sensitive controller backplane.
Technical Specifications
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Model Identification: MC-TDIY22
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Part Number: 51204160-175
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Functional Category: Digital Input Field Termination Assembly (FTA)
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Input Voltage Capacity: 120 VAC (Nominal)
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Signal Type: Discrete / Digital ON/OFF States
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Architecture Support: Honeywell TDC 3000 / HPM / Experion PKS
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Redundancy Configuration: Supports dual I/O processor (IOP) connections
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Termination Interface: Compression-style screw terminals for field leads
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Coating: Conformal coated (MC designation) for corrosion resistance
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Physical Profile: Standard Honeywell Size B FTA (~12 inches / 307 mm)
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Compliance Standards: Industrial safety and EMI/RFI shielding
Operational Utility and Safety
In heavy industrial sectors such as power generation and water treatment, the MC-TDIY22 (51204160-175) is the standard solution for integrating 120VAC field hardware. Its "MC" prefix signifies that the printed circuit board is protected by a conformal coating, providing a critical barrier against humidity, dust, and corrosive gases. The assembly is built to handle the inherent electrical noise associated with high-voltage AC circuits, utilizing internal filtering to prevent false triggering. For mission-critical control loops, the module's support for redundant I/O processors ensures that process visibility is maintained even during a hardware swap or processor failover.
Frequently Asked Questions
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Can this FTA be used with 24VDC field signals?
No. The MC-TDIY22 (51204160-175) is specifically optimized for 120VAC sensing. For 24VDC logic, a DC-rated FTA such as the MC-TDID series should be utilized to ensure proper switching thresholds.
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Is the 51204160-175 part number interchangeable with the MC-TDIY22?
Yes. 51204160-175 is the official Honeywell manufacturing part number for the MC-TDIY22 assembly. They are functionally identical and fully compatible within the HPM/Experion I/O Link ecosystem.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
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Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.