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- MC-TDID52 51304441-250
- Digital Input Module
- USA
- 190 × 120 × 30 mm
- 0.55 kg
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Product Overview
The Honeywell MC-TDID52 (Part No. 51304441-250) is a high-density digital input Field Termination Assembly (FTA) used in Honeywell Experion PKS and Series C / C300 distributed control systems (DCS).
It is designed to receive and process discrete ON/OFF field signals from industrial devices such as switches, relays, limit switches, proximity sensors, and safety interlocks. The module provides signal isolation, conditioning, and reliable digital acquisition for process monitoring and control applications.
This version (-250) is a non-CE variant, typically used in specific regional configurations or legacy installations, while maintaining functional equivalence to the -275 CE-compliant version.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | MC-TDID52 |
| Part Number | 51304441-250 |
| Product Type | Digital Input FTA Module |
| System Series | Experion PKS / Series 8 / C300 architecture |
| Input Channels | 32 digital input channels |
| Input Type | Discrete ON/OFF signals |
| Input Voltage | Typically 24 VDC (industrial standard) |
| Signal Sources | Dry contacts, switches, proximity sensors |
| Isolation | Channel-to-system galvanic isolation |
| Wiring Type | Screw terminal field wiring |
| Response Time | Millisecond-level switching response |
| Diagnostics | Channel status LEDs + module health monitoring |
| Redundancy Support | Supported in system architecture (controller dependent) |
| Operating Environment | Industrial automation systems |
| Operating Temperature | -40°C to +85°C (industrial-grade range) |
| Dimensions | 190 × 120 × 30 mm |
| Weight | 0.55 kg |
Function and Working Principle
The MC-TDID52 functions as a field interface for digital signal acquisition.
It is responsible for:
- Receiving ON/OFF signals from field devices
- Converting physical contact states into digital system inputs
- Providing electrical isolation between field and control system
- Filtering electrical noise and signal disturbances
- Transmitting stable input data to I/O processors (MC/MU series)
- Supporting high-density monitoring of discrete signals
It does not execute control logic; it ensures accurate and reliable input acquisition.
System Role in Architecture
The Honeywell MC-TDID52 (51304441-250) plays a front-end digital input acquisition role in industrial control systems.
It is typically used for:
- Equipment status monitoring (RUN/STOP signals)
- Safety interlocks and permissive logic inputs
- Alarm and trip signal acquisition
- Limit switch and proximity sensor feedback
- Process automation discrete signal collection
It acts as the interface between field devices and DCS logic processing systems.
Industrial Applications
- Oil and gas production systems
- Petrochemical and refinery plants
- Power generation stations
- Chemical processing industries
- Water and wastewater treatment systems
- Industrial automation and control systems
Installation & Integration
Proper installation ensures reliable performance:
- Installed in Experion PKS / Series 8 control cabinets
- Connected directly to field switches and sensors
- Interfaces with MC/MU series I/O processors
- Requires proper grounding and shielding practices
- Configured using Honeywell engineering tools
- Used in both monitoring and control applications
Compatible Components
- Honeywell Experion PKS controllers
- MC/MU series I/O processors
- Dry contact switches and proximity sensors
- Relay outputs and interlock systems
- Field termination assemblies (FTAs)
- Digital signal isolation modules
Recommended Alternative Models
| Model | Type | Application |
|---|---|---|
| MC-TDID52-275 | CE version | Same function, compliant variant |
| MC-TDIA12 | Isolated DI module | Higher isolation requirement |
| MC-TDID53 | Alternate DI module | Similar architecture |
| MC-TDIL series | Low-level DI modules | Specialized input types |
| Universal DI modules | Modern replacements | Flexible I/O platforms |
Key Advantages
- 32-channel high-density digital input capability
- Reliable ON/OFF signal acquisition
- Strong electrical isolation for industrial environments
- Fast response time for real-time monitoring
- Compact and lightweight FTA design
- Compatible with Honeywell Experion PKS systems
- Stable long-term industrial operation
FAQs
Q1: What is the main function of this module?
It receives and processes digital ON/OFF signals from field devices.
Q2: What is the difference between -250 and -275 versions?
They are functionally similar; -275 is typically CE-compliant, while -250 is a non-CE variant.
Q3: What type of signals does it support?
Dry contacts, switches, and proximity sensor outputs.
Q4: Does it perform control logic?
No, it only acquires and transmits input signals.
Q5: Where is it used?
In Honeywell Experion PKS distributed control systems.
Conclusion
The Honeywell MC-TDID52 (51304441-250) Digital Input Module is a robust and high-density signal acquisition component in Honeywell DCS architectures. It ensures reliable collection of discrete field signals, enabling accurate monitoring and stable operation across industrial automation environments.