Honeywell DC-TFB412 51307618-176 Fieldbus Interface IOTA Module

The Honeywell DC-TFB412 51307618-176 Fieldbus Interface IOTA Module is an advanced Foundation™ Fieldbus interface module, designed for seamless integration into Honeywell’s Series C I/O, Experion PKS, and C300 Controller systems.

As a next-generation IOTA (Input/Output Termination Assembly) module, the DC-TFB412 enables robust communication between the controller and connected Foundation™ Fieldbus H1 field devices. It provides a highly reliable, high-integrity physical interface, ensuring uninterrupted data exchange and consistent system performance in demanding industrial applications.

With its dual-channel architecture, advanced galvanic isolation, comprehensive diagnostics, and redundant power supply support, the DC-TFB412 is ideal for plants requiring modern digital fieldbus technology for process control, asset management, and real-time monitoring. The module is engineered to operate reliably in harsh environments, supporting long service life and superior control quality.

It is widely used in oil & gas, power generation, chemical processing, pulp & paper, water treatment, pharmaceuticals, and other process industries looking to implement high-speed, deterministic, and fault-tolerant fieldbus networks.

Product Specifications

Applications

• Seamless integration with Foundation™ Fieldbus H1 devices

• Smart field device communication for advanced process control

• Distributed control in oil & gas upstream, refining, LNG

• High-integrity process automation in chemical manufacturing

• Power generation (thermal, nuclear, renewables)

• Batch and continuous control in pharmaceutical plants

• Fieldbus loop control in pulp & paper operations

• Water and wastewater treatment plant automation

• Hazardous area control — ATEX Zone 2 and IECEx certified

• Food & beverage automation with real-time device feedback

Product Advantages

• Dual FOUNDATION™ Fieldbus channels: Delivers two isolated H1 channels per module, maximizing integration density

• Advanced isolation: Ensures galvanic isolation across channels and system logic for superior reliability

• Redundant power support: Enables high system availability and fault tolerance

• High-speed deterministic communication: Supports 31.25 kbit/s fieldbus rates for fast device interaction

• Comprehensive diagnostics: Onboard LED indicators and system diagnostics simplify maintenance

• Seamless Experion PKS integration: Fully compatible with Honeywell Experion PKS and C300 systems

• Hazardous area certified: Designed for safe operation in ATEX Zone 2 and IECEx environments

• Compact footprint: High-density form factor saves cabinet space and reduces installation costs

• Flexible mounting: Can be DIN rail or panel mounted for ease of integration

• Rugged, industrial-grade build: Designed to perform under vibration, temperature extremes, and electrical noise typical in process industries

Frequently Asked Questions (FAQ)

1. What is the DC-TFB412 module used for?

   It is a dual-channel Foundation™ Fieldbus H1 interface module for Honeywell Experion PKS and C300 controllers.

2. How many Fieldbus channels does it support?

   The DC-TFB412 supports two Fieldbus H1 channels per module.

3. What type of isolation does this module provide?

   It provides full galvanic isolation between channels and between channels and system logic.

4. Is it certified for use in hazardous areas?

   Yes — it is ATEX Zone 2 and IECEx certified.

5. What systems is this module compatible with?

   It is compatible with Honeywell Experion PKS, Series C I/O, and C300 controllers.

6. What is the data rate for each Fieldbus channel?

   Each H1 channel communicates at 31.25 kbit/s.

7. Does this module support redundant power inputs?

   Yes — it supports redundant 24 VDC power supplies for high availability.

8. Does it offer diagnostics?

   Yes — channel-level and module-level diagnostics, with LED indicators, are built in.

9. How is this module mounted?

   It can be DIN rail mounted or panel mounted.

10. What industries typically use the DC-TFB412?

    Industries include oil & gas, power, chemicals, water treatment, pulp & paper, pharmaceuticals, and more.