SB301

Overview

SB301 is a Yokogawa ESB Bus Interface Card designed for dual-redundant communication in FCU systems.

Redundant Configuration

• Supports installation of two SB301 cards for dual-redundant operation.

• Active and standby status managed by FCU CPU software.

Communication Function

• Active card operates as ESB bus master and communicates with node units.

• Redundant buses alternate automatically if an abnormality occurs.

Bus Monitoring

• The abnormal bus is periodically checked to determine if it has returned to normal.

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