SSB401-53 Yokogawa ESB Bus Interface Module

SSB401-53 Yokogawa CENTUM VP ESB Bus Interface Slave Module

SSB401-53 Yokogawa CENTUM VP ESB Bus Interface Slave Module

Availability: 10 left in stock

Yokogawa SSB401-53 CENTUM VP ESB Bus Interface Module The Yokogawa SSB401-53, also cataloged as the SSB401 Optical Bus Interface Module,...

SKU: SSB401-53 S1

Manufacturer: Yokogawa
Product No.: SSB401-53 S1
Product Type: Bus Interface Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa SSB401-53 CENTUM VP ESB Bus Interface Module

The Yokogawa SSB401-53, also cataloged as the SSB401 Optical Bus Interface Module, operates as a dedicated hardware component for deterministic fiber-optic communication within Yokogawa CENTUM VP distributed control system architectures. The unit routes high-speed data between Field Control Units (FCUs) and remote I/O nodes over an Enhanced System Backbone (ESB) bus.

Hardware Specifications

Parameter	Specification
Model	SSB401-53
Brand	Yokogawa Electric Corporation
Origin	Japan
Weight	0.40 kg
Dimensions	130 x 120 x 30 mm
Operating Temp	-20 to +55 deg C
Storage Temp	-40 to +70 deg C
Relative Humidity	5 to 95% RH, non-condensing
Power Consumption	3.0 W (5 VDC at 600 mA)
Communication Protocol	ESB Bus (Enhanced System Backbone)
Interface Type	Optical fiber
Data Rate	100 Mbps full duplex
Bus Redundancy	Dual-redundant bus architecture supported
Electrical Isolation	Optical isolation between system bus and field equipment
Conformal Coating	Suffix S1 (ISA Standard G3 corrosive gas resistance)
System Diagnostics	Self-test logic, status error reporting, LED indicators
Standards Compliance	CE, UL, FM certified

System Integration and Channel-to-Channel Isolation

The module provides continuous optical isolation between the core system backplane and field-side fiber trunks, suppressing ground loops and high-voltage electrical surges across extended industrial topologies. In dual-redundant CENTUM VP bus configurations, the unit manages real-time channel switching to maintain full-duplex 100 Mbps data throughput without interrupting control execution. Internal diagnostic circuits evaluate optical signal intensity and frame integrity, driving front-panel status LEDs and passing fault reports directly to the DCS system diagnostic logs.

Frequently Asked Questions

Q: How does the module handle communication recovery during a primary ESB bus line failure?

A: The module automatically transfers active data traffic to the secondary optical channel within microseconds upon detecting signal degradation or link loss. The system logic records the channel transition in the CENTUM VP diagnostic buffer while maintaining continuous controller execution.

Q: What environmental protection level does the S1 suffix code indicate for this hardware revision?

A: The S1 suffix designates factory-applied conformal coating designed to withstand ISA Standard G3 corrosive atmospheric environments. This protective layer prevents trace oxidation and degradation caused by airborne sulfides, moisture, and chemical vapors in harsh control rooms.

Q: What precautions are necessary when hot-swapping the optical bus module on an active node?

A: Maintenance personnel must verify that the redundant bus module holds active system communication before unseating the target card. Disconnect the optical fiber connectors using protective dust caps to prevent ambient particulate contamination on the optical transceivers during extraction.

Field Installation Guidelines

Mount the unit directly into the designated slot of the CENTUM VP rack assembly, confirming that the backplane connector seats fully before securing locking screws. Maintain strict minimum bend radius limits on all optical fiber cables to prevent signal attenuation or physical glass fracture within the conduit runs. Ensure cable shields and chassis grounding straps link directly to the main cabinet earth bar using low-impedance copper conductors.

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