Honeywell DC-TFB402 51307616-176 Fieldbus Interface IOTA Module

Company Information
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Product Introduction

The Honeywell DC-TFB402 51307616-176 Fieldbus Interface IOTA Module is a critical component of Honeywell’s Series C I/O system, engineered to provide seamless connectivity between the controller and Foundation™ Fieldbus devices. Serving as the physical interface between the controller and I/O Termination Assemblies (IOTA), the DC-TFB402 delivers highly reliable digital communications and robust signal integrity, enabling precise data transfer in even the most challenging industrial environments.

Designed for use within Honeywell’s Experion Process Knowledge System (PKS) and C300 Controllers, the DC-TFB402 module supports fast, deterministic communication between control logic and field devices. Its rugged build quality, advanced diagnostics, and flexible mounting make it an essential choice for plants seeking to modernize legacy systems or implement new, highly scalable distributed control architectures.

Commonly used in oil & gas, chemicals, power generation, water treatment, pharmaceuticals, pulp & paper, and other demanding industries, this module supports reliable Fieldbus integration while enhancing overall plant safety, reliability, and performance.

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Product Specifications

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Applications

• Interface to Foundation™ Fieldbus H1 field devices

• Distributed control systems in oil & gas, chemicals, refining

• High-reliability process control for power generation (thermal, nuclear, renewables)

• Batch and continuous process automation

• Smart I/O connectivity in pharmaceutical manufacturing

• Water and wastewater treatment plant automation

• Automation in pulp & paper industries

• High-speed foundation fieldbus loop control

• Complex process safety systems requiring deterministic fieldbus connectivity

• Life sciences and food & beverage process control systems

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Product Advantages

• Reliable Foundation™ Fieldbus H1 Connectivity: Supports stable communication for smart field devices

• Dual Channel Design: Two Fieldbus H1 channels in one module increases efficiency and flexibility

• Advanced Diagnostics: Channel-level and module-level diagnostics improve maintainability and operational insight

• Galvanic Isolation: Prevents electrical interference between field devices and controller logic

• Flexible System Integration: Seamlessly integrates with Honeywell Experion PKS and C300 controllers

• Compact, Rugged Design: Withstands harsh environments typical in process industries

• Redundant Power Supply Support: Increases system uptime and fault tolerance

• Certified for Hazardous Areas: ATEX Zone 2, IECEx certified for use in challenging industrial applications

• Fast Communication Rates: 31.25 kbps deterministic communication enhances control precision

• Lifecycle Support: Backed by Honeywell’s lifecycle services for long-term product support and availability

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Frequently Asked Questions (FAQ)

1. What is the primary function of the DC-TFB402?
   It acts as a Fieldbus interface module providing two FOUNDATION™ Fieldbus H1 channels to connect smart field devices.

2. Which systems is the DC-TFB402 compatible with?
   It is fully compatible with Honeywell Experion PKS and C300 controllers.

3. How many Fieldbus channels does the module support?
   The DC-TFB402 supports two independent H1 channels.

4. Does the module provide isolation?
   Yes — galvanic isolation is provided between Fieldbus channels and logic side.

5. Is it suitable for use in hazardous areas?
   Yes — the module is certified for ATEX Zone 2 and IECEx applications.

6. What kind of diagnostics does this module offer?
   The DC-TFB402 provides module-level and channel-level diagnostics, including LED status indicators.

7. What is the Fieldbus communication speed?
   The communication rate is 31.25 kbit/s, in line with FOUNDATION™ Fieldbus H1 standards.

8. Is redundant power supported?
   Yes — redundant 24 VDC power supply configurations are supported.

9. What is the typical operating temperature range?
   The module operates from -20°C to +60°C (-4°F to +140°F).

10. What is the recommended mounting method?
    The module can be DIN rail mounted or panel mounted, allowing flexibility in installation.

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Related Models (Same Series or Product Line)

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Popular Honeywell Models (Same Brand)

Frequently Asked Questions (FAQ)

1. What is the primary function of the DC-TFB402?
   It acts as a Fieldbus interface module providing two FOUNDATION™ Fieldbus H1 channels to connect smart field devices.

2. Which systems is the DC-TFB402 compatible with?
   It is fully compatible with Honeywell Experion PKS and C300 controllers.

3. How many Fieldbus channels does the module support?
   The DC-TFB402 supports two independent H1 channels.

4. Does the module provide isolation?
   Yes — galvanic isolation is provided between Fieldbus channels and logic side.

5. Is it suitable for use in hazardous areas?
   Yes — the module is certified for ATEX Zone 2 and IECEx applications.

6. What kind of diagnostics does this module offer?
   The DC-TFB402 provides module-level and channel-level diagnostics, including LED status indicators.

7. What is the Fieldbus communication speed?
   The communication rate is 31.25 kbit/s, in line with FOUNDATION™ Fieldbus H1 standards.

8. Is redundant power supported?
   Yes — redundant 24 VDC power supply configurations are supported.

9. What is the typical operating temperature range?
   The module operates from -20°C to +60°C (-4°F to +140°F).

10. What is the recommended mounting method?
    The module can be DIN rail mounted or panel mounted, allowing flexibility in installation.

Related Models (Same Series or Product Line)

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Popular Honeywell Models (Same Brand)

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