The Yokogawa S9402UK is an ESB (Extended Serial Backplane) bus interface unit module used in Yokogawa CENTUM CS / CENTUM VP distributed control systems (DCS).
It is designed to provide a reliable electrical and communication interface between controller units and ESB bus-based I/O nodes, ensuring stable high-speed data transmission across the control system architecture. The S9402UK is typically installed as part of the system backbone communication structure, where it supports signal integrity, bus expansion, and modular system configuration.
In large-scale industrial automation environments, this module plays a key role in maintaining deterministic communication performance and system scalability.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Yokogawa |
| Model | S9402UK |
| Product Type | ESB Bus Interface Unit |
| Function | ESB bus communication interface |
| System Compatibility | CENTUM CS / CENTUM VP |
| Bus Type | ESB (Extended Serial Backplane) |
| Role in System | Controller ↔ I/O node communication interface |
| Signal Handling | High-speed digital communication (system bus level) |
| Redundancy Support | Supported in system configuration |
| Installation Type | Rack-mounted / system cabinet module |
| Operating Temperature | -20°C to +70°C |
The S9402UK is part of Yokogawa’s ESB architecture, which is used to ensure high-speed and stable communication between distributed control nodes and central controllers.
Physical Characteristics
| Item | Specification |
|---|---|
| Dimensions (W × H × D) | Approx. 107 × 130 × 32 mm |
| Weight | Approx. 0.3 – 1.2 kg |
| Mounting Type | DCS rack / ESB interface slot |
| Structure | Industrial communication interface module |
| Cooling | Natural convection inside cabinet |
Recommended Related Models
- Yokogawa S9345FA – ESB bus connector unit
- Yokogawa S9346FA – ESB connector with terminator
- Yokogawa S9341FA – ESB terminator module
- Yokogawa NFCP100 – communication processor module
- Yokogawa CP471 – controller CPU module
Popular Yokogawa Models
- Yokogawa S9402UK – ESB bus interface unit
- Yokogawa S9345FA – ESB connector module
- Yokogawa S9346FA – ESB connector with terminator
- Yokogawa NFCP100 – network communication processor
- Yokogawa ADV551 – digital output module
