Overview
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CC-TFB402 |
| Brand | Honeywell |
| Origin | USA |
| Operating Temp | -40 deg C to +70 deg C |
| Power Consumption | Approx. 0.196 A load current at 24 VDC supply |
| Part Number | 51308309-275 / 51403468 |
| System Compatibility | Honeywell Experion PKS Series C / C300 Controller |
| Module Type | Fieldbus Interface Module (FIM-4) IOTA / Termination Assembly |
| Fieldbus Protocol | FOUNDATION Fieldbus H1 |
| Network Capacity | 4 H1 fieldbus networks |
| Operating Voltage | 24 VDC external supply |
| Fieldbus Segment Supply | 24 VDC external power, up to 350 mA per segment |
| Wiring Connection | Screw clamp terminals |
| Wire Gauge Range | 14 – 28 AWG |
| Storage Temperature | -40 deg C to +85 deg C |
| Humidity Range | 5% to 95% RH, non-condensing |
| Hazardous Area Rating | Class I, Div. 2, Groups A, B, C, D (T4); Zone 2 AEx/Ex nA IIC T4 |
FOUNDATION Fieldbus H1 Network Interface Characteristics
The CC-TFB402 operates as a physical termination and interface assembly for Honeywell Experion PKS Series C FOUNDATION Fieldbus networks. It supports four independent H1 network connections and provides field wiring termination between field devices and the control system infrastructure.
The module handles fieldbus communication paths for connected transmitters, actuators, and valve positioners. In addition, it supports redundant I/O configurations when installed within compatible Series C architectures.
Honeywell process control modules commonly implement FOUNDATION Fieldbus and HART-based instrument communication methods. For fieldbus applications, the CC-TFB402 maintains segment-level connectivity while providing channel-to-channel isolation between field wiring interfaces and system-side electronics.
Frequently Asked Questions
Q: Does the CC-TFB402 provide direct field device control processing?
A: No. The CC-TFB402 functions as a Fieldbus Interface Module IOTA termination assembly. The C300 controller and associated fieldbus modules perform application processing.
Q: How many FOUNDATION Fieldbus H1 networks can the CC-TFB402 connect?
A: The CC-TFB402 supports four H1 fieldbus network interfaces through its termination and connection structure.
Q: Can field wiring remain connected during module replacement?
A: The Series C IOTA design supports hot-swappable field module replacement functions. However, replacement procedures must follow the approved Honeywell installation and maintenance instructions.
Field Installation Guidelines
- Install the CC-TFB402 on the approved Honeywell Series C I/O mounting structure and maintain correct mechanical alignment with the associated module carrier.
- Use shielded fieldbus cable according to FOUNDATION Fieldbus installation practices.
- Connect cable shields using the plant grounding method defined for the control system design.
- Separate fieldbus wiring from high-voltage power cables and high-noise switching circuits to reduce electromagnetic interference.
- Verify terminal tightening, cable identification, and segment polarity before applying 24 VDC field power.
- Confirm fieldbus segment loading remains within the designed power supply capacity before commissioning connected devices.
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