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- Honeywell
- MC-TDID72 51303928-150
- Numeric Input Module
- USA
- 190 × 70 × 20 mm
- 0.52 kg
- Xiamen, China
- New & In Stock
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Honeywell MC-TDID72 (51303928-150) is a numeric (digital) input module used in Honeywell distributed control systems (DCS). It is designed to collect discrete field signals such as ON/OFF or status inputs from devices like switches, proximity sensors, relay contacts, and alarms.
The module converts these incoming digital signals into structured process data for use by the control system, supporting monitoring, interlocking, and sequence control functions in industrial automation environments.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Honeywell |
| Model | MC-TDID72 |
| Part Number | 51303928-150 |
| Product Type | Numeric / Digital Input Module |
| Input Type | Discrete ON/OFF signals |
| Input Voltage | Typically 24 VDC industrial signals |
| Channel Configuration | High-density multi-channel input |
| Isolation | Channel-to-channel and system isolation |
| Signal Function | Status / alarm / interlock detection |
| Mounting Method | Rack-mounted module |
| Application | Industrial process control and monitoring |
| Dimensions | 190 × 70 × 20 mm |
| Weight | 0.52 kg |
Function and Working Principle
The MC-TDID72 monitors digital states from field devices and sends them to the control system:
- Field devices (switches, sensors, contacts) generate ON/OFF signals.
- The module receives these signals through isolated input channels.
- Internal circuitry conditions and filters incoming signals.
- Each channel state is converted into digital data.
- Data is transmitted to the Honeywell controller for logic execution and monitoring.
This allows accurate real-time detection of equipment status and process conditions.
Key Features
- High-density digital input capability
- Isolated channels for improved electrical safety
- Strong noise immunity for industrial environments
- Reliable ON/OFF signal detection
- Compact industrial-grade design
- Continuous 24/7 operation support
- Seamless integration with Honeywell DCS systems
- Suitable for safety and interlock logic applications
Industrial Applications
- Oil and gas production facilities
- Petrochemical plants
- Power generation systems
- Chemical processing industries
- Water and wastewater treatment plants
- Manufacturing automation systems
- Alarm and event monitoring systems
- Safety interlock systems
- Process control systems
Installation
The module is installed in a Honeywell control cabinet and connected to field devices via termination assemblies.
Installation Steps
- Insert module into designated rack slot
- Connect digital input wiring from field devices
- Ensure proper grounding and shielding
- Configure input channels in system software
- Perform signal testing and commissioning
Compatible Components
| Component | Description |
|---|---|
| Honeywell Controllers | Process logic and system control |
| Field Devices | Switches, sensors, relay contacts |
| Termination Assemblies | Wiring interface modules |
| I/O Racks | Module mounting structure |
| Alarm Systems | Process status and event monitoring |
Alternative Models
| Model | Description |
|---|---|
| MC-TDIA72 | Isolated Digital Input Module |
| MC-TDIA22 | Isolated Digital Input Module |
| MC-TDID12 | Digital Input Module |
| MC-TAIH04 | Analog Input Module |
Advantages
- Reliable industrial signal acquisition
- Strong electrical isolation
- High channel density
- Reduced wiring complexity
- Stable long-term performance
- Easy integration into Honeywell systems
- Suitable for critical automation tasks
- Low maintenance requirements
Frequently Asked Questions
What is the main function of MC-TDID72?
It receives digital ON/OFF signals from field devices and sends them to the control system for processing.
What types of signals does it support?
It supports standard industrial discrete signals such as 24 VDC switch or relay inputs.
Is it suitable for harsh environments?
Yes, it is designed for industrial environments with electrical noise and continuous operation requirements.
Where is it commonly used?
It is widely used in oil & gas, power plants, chemical industries, and industrial automation systems.
Conclusion
The Honeywell MC-TDID72 (51303928-150) Numeric Input Module is a high-density industrial input module designed for reliable acquisition of discrete field signals. With its compact dimensions (190 × 70 × 20 mm), weight of 0.52 kg, and isolated input architecture, it provides stable, safe, and accurate performance in demanding process control environments.