Overview
The YOKOGAWA RB401 S4 is a RIO (Remote I/O) Bus Module designed to connect field stations to central CENTUM VP and CS 3000 controllers. It guarantees high-speed data transmission and reliable signal integrity across distributed process control systems.
With advanced isolation and noise suppression, the RB401 S4 maintains accurate communication between multiple I/O stations over long distances. Its modular construction simplifies installation, maintenance, and system expansion.
Manufactured by YOKOGAWA Electric Corporation, the RB401 S4 delivers industrial-grade reliability, ensuring continuous operation in demanding environments such as chemical plants, power generation, and water treatment facilities.
Technical Specifications
| Parameter |
Description |
| Model |
RB401 S4 |
| Manufacturer |
YOKOGAWA Electric Corporation |
| Product Type |
RIO Bus Module |
| Series |
CENTUM VP / CS 3000 |
| Communication Interface |
High-speed RIO Bus |
| Transfer Rate |
Up to 2 Mbps |
| Bus Cable Type |
Shielded twisted pair |
| Maximum Bus Length |
1 km per segment |
| Connectors |
Dual 9-pin D-sub (input/output) |
| Isolation |
Optical isolation between bus and internal circuits |
| Power Supply |
5 V DC from system backplane |
| Power Consumption |
Approx. 6 W |
| Dimensions |
250 mm (H) × 25 mm (W) × 150 mm (D) |
| Weight |
Approx. 0.45 kg |
| Operating Temperature |
0 °C to 60 °C |
| Storage Temperature |
−25 °C to 70 °C |
| Mounting Method |
Rack-mounted within I/O station |
| Material |
Industrial-grade ABS housing |
FAQ
Q1: Is the YOKOGAWA RB401 S4 brand new and original?
Yes, all RB401 S4 units are factory-sealed, genuine, and new from YOKOGAWA.
Q2: What is the main function of this module?
It connects remote I/O stations to central controllers, ensuring fast, reliable data communication.
Q3: Which systems is the RB401 S4 compatible with?
It fully supports CENTUM VP and CENTUM CS 3000 control systems.
Q4: Does it support redundant operation?
Yes, the module supports redundancy for fault-tolerant industrial operations.
Q5: How fast can it be shipped?
Orders typically ship within 3–14 days, depending on quantity and stock.
