RB401 YOKOGAWA RIO Bus Module Datasheet & Technical Manual

Yokogawa RB401 RIO Bus Module Centum CS/VP Interface Card

Yokogawa RB401 RIO Bus Module Centum CS/VP Interface Card

Availability: 99 left in stock

YOKOGAWA RB401 RIO Bus Module Configured for high-speed data transmission in Centum CS and Centum VP control systems, the YOKOGAWA...

SKU: RB40 1

Manufacturer: Yokogawa
Product No.: RB40 1
Product Type: RIO Bus Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 250g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA RB401 RIO Bus Module

Configured for high-speed data transmission in Centum CS and Centum VP control systems, the YOKOGAWA RB401 (RB401 RIO Bus Interface Master Card) provides direct physical and electrical management of remote I/O data traffic.

Hardware Specifications

Parameter	Specification
Model	RB401
Brand	YOKOGAWA
Origin	USA
Weight	0.1 kg
Dimensions	2.2 cm x 12.4 cm x 12.6 cm
Operating Temp	-20 deg C to +60 deg C
Power Consumption	5 W
Bus Speed	10 Mbps
Input Voltage	24 VDC
Device Capacity	Up to 31 devices per segment

Process Control Connectivity

The YOKOGAWA RB401 facilitates deterministic communication between distributed I/O modules and the host control system. This module utilizes the RIO bus protocol to maintain 10 Mbps throughput across the network segment. To ensure signal integrity, the installation must utilize shielded cabling, ensuring that the cable shield is grounded at a single point to prevent ground loop currents. The module supports cold junction compensation (CJC) requirements inherent to the associated analog measurement channels, maintaining high measurement accuracy during fluctuations in ambient cabinet temperatures.

Frequently Asked Questions

Q: Is the RB401 module capable of hot-swapping during system operation?

A: No, the RB401 requires the power to be isolated from the rack prior to insertion or removal to prevent potential electrical damage to the backplane connectors.

Q: How should the DB-37 connector be managed to ensure signal stability?

A: Ensure that the DB-37 connector is fully seated and the locking screws are tightened to provide mechanical strain relief and prevent intermittent signal loss due to vibration.

Field Installation Guidelines

Environmental Preparation: Ensure the mounting rack maintains an ambient temperature between -20 deg C and +60 deg C. Verify that the installation area is free from excessive particulate matter that may impede convective cooling.
Mounting: Align the module with the designated slot on the RIO backplane. Apply uniform pressure until the interface pins engage fully with the backplane bus.
Earthing and Shielding: Secure the RIO bus cable shielding to the designated functional earth (FE) terminal on the rack. Do not route RIO bus communication cables parallel to high-voltage power lines; maintain a minimum separation distance of 30 cm to mitigate electromagnetic interference (EMI).
Voltage Verification: Prior to energizing, confirm the 24 VDC supply voltage at the terminal block is within the rated tolerance levels to ensure stable bus communication.

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