Overview
Product Function
The SB Bus acts as the local communication bus between an FCN control unit and its extension units. The NFSBT02 provides a T-joint connection and terminates the bus at the designated endpoint. Therefore, it helps maintain the correct bus connection arrangement in an FCN system.
In addition, the built-in terminator distinguishes the NFSBT02 from the standard NFSBT01. When selecting a replacement, check the existing termination arrangement to ensure the correct model.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | NFSBT02 |
| Brand | Yokogawa |
| Product Type | SB Bus T-Joint |
| Bus Type | SB Bus |
| Main Function | Bus connection and termination |
| Terminator | Built-in |
| Dimensions (W x H x D) | Approx. 32.6 x 102 x 17 mm |
| Weight | Approx. 0.1 kg |
Model and Ordering Information
Yokogawa identifies two SB Bus T-joint configurations for the NFSB100 SB Bus repeat module.
| Model / Ordering Code | Description |
|---|---|
| NFSBT01 | SB Bus T-joint without built-in terminator |
| NFSBT02 | SB Bus T-joint with built-in terminator |
| NFSB100 /SBT01 | NFSB100 SB Bus repeat module with T-joint option |
| NFSB100 /SBT02 | NFSB100 SB Bus repeat module with T-joint and built-in terminator option |
For correct selection, distinguish the standalone T-joint model from the NFSB100 ordering code. The /SBT02 suffix identifies the built-in terminator option on the SB Bus repeat module.
SB Bus Connection Requirements
When an FCN control unit connects to I/O extension units, the SB Bus repeat module extends the local bus between the units. Yokogawa specifies T-joints with built-in terminators at both ends of each SB Bus repeat module connection.
Therefore, check the bus layout and termination positions before ordering. The NFSBT02 provides the termination function required at the designated bus endpoints.
Frequently Asked Questions
Q: What is the difference between Yokogawa NFSBT01 and NFSBT02?
A: The main difference is the termination function. NFSBT01 provides a standard SB Bus T-joint, whereas NFSBT02 includes a built-in terminator. Therefore, select the model according to the required bus-end configuration.
Q: What is the function of the NFSBT02 in an FCN system?
A: The NFSBT02 provides an SB Bus branching connection and built-in termination. It supports the local bus connection arrangement between FCN control units and extension units.
Q: Is NFSBT02 the same as NFSB100/SBT02?
A: No. NFSBT02 identifies the T-joint model itself. In contrast, NFSB100/SBT02 identifies the NFSB100 SB Bus repeat module ordering configuration with the built-in terminator option.
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