S9345FA YOKOGAWA ESB Bus Connector Unit Datasheet & Technical Manual

S9345FA Yokogawa ESB N-ESB Bus Connector Interface Module

S9345FA Yokogawa ESB N-ESB Bus Connector Interface Module

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YOKOGAWA S9345FA Connector Unit Configured for high-speed data transmission in DCS and safety network architectures, the YOKOGAWA S9345FA (S9345FA Connector...

SKU: S9345FA

Manufacturer: Yokogawa
Product No.: S9345FA
Product Type: Communication Interface Modules,YOKOGAWA CENTUM
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 630g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

YOKOGAWA S9345FA Connector Unit

Configured for high-speed data transmission in DCS and safety network architectures, the YOKOGAWA S9345FA (S9345FA Connector Unit) provides direct physical signal coupling for ESB and N-ESB bus structures.

Hardware Specifications

Parameter	Specification
Model	S9345FA
Brand	YOKOGAWA
Origin	Japan
Weight	0.63 kg
Dimensions	5.1 cm x 25.4 cm x 11.4 cm
Operating Temp	-20 deg C to +60 deg C
Power Consumption	0.5 A
Bus Support	ESB / N-ESB
Channel Count	2 independent bus channels
Max Distance	5 km (two stages) / 10 km (Vnet/IP R1.03+)
Humidity	5-95% RH (non-condensing)

HART Loop and Signal Isolation

The S9345FA employs internal optical isolation to decouple the ESB/N-ESB network from local electrical noise. This design prevents ground loops and transient voltage surges from propagating across the bus interface. The module supports point-to-point communication integrity, ensuring that the 4-20 mA HART loop data and control signals maintain signal-to-noise ratios during high-speed data frame transmission. The channel-to-channel isolation architecture ensures that a fault in one communication branch does not compromise the redundant bus status or the integrity of adjacent control segments.

Frequently Asked Questions (FAQ)

Q: Does the S9345FA support hot-swapping during active network operation?

A: No. The unit must be de-energized prior to removal or insertion to prevent potential bus communication disruption or damage to the backplane interface pins.

Q: How does the module handle redundant bus configurations?

A: The S9345FA provides two independent bus channels. In a redundant configuration, the system controller monitors both channels simultaneously; if communication on the primary path is interrupted, the unit maintains continuity through the secondary channel without requiring manual intervention.

Field Installation Guidelines

Mounting: Ensure the unit is secured to the designated rack or terminal board using the provided mounting points. Verify that the mounting surface is grounded to a common potential to facilitate effective EMI shielding.
Cabling: Utilize shielded twisted-pair cabling for all ESB/N-ESB connections. Keep communication lines separated from high-voltage power conduits by a minimum distance of 30 cm to mitigate inductive coupling.
Termination: When configuring in a daisy-chain topology, ensure the terminal device is correctly terminated to prevent signal reflections, which may introduce bit errors into the communication stream.
Environment: While the module is rated for up to 60 deg C, maintain adequate airflow around the unit to ensure passive heat dissipation and prolong the service life of internal electronic components.

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