SEC402-51 S1 Yokogawa ESB Bus Coupler Module

Yokogawa SEC402-51 S1 CENTUM VP ESB Bus Coupler Module

Yokogawa SEC402-51 S1 CENTUM VP ESB Bus Coupler Module

Availability: 20 left in stock

Yokogawa SEC402-51 S1 ESB Bus Coupler Modules Configured for high-speed network communication in CENTUM VP and ProSafe-RS control platforms, the...

SKU: SEC402-51 S1

Manufacturer: Yokogawa
Product No.: SEC402-51 S1
Product Type: Communication Interface Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa SEC402-51 S1 ESB Bus Coupler Modules

Configured for high-speed network communication in CENTUM VP and ProSafe-RS control platforms, the Yokogawa SEC402-51 S1 (SEC402 ESB Bus Coupler Module) provides direct physical/electrical execution. The unit links safety and process node racks over dual redundant Ethernet communication channels, executing real-time data transfers across backplane architectures. Featuring integrated hardware diagnostic indicators and 1500 VAC dielectric isolation, the module maintains continuous inter-rack communication across distributed control loops.

Hardware Specifications

Parameter	Specification
Model	SEC402-51 S1
Brand	Yokogawa
Origin	USA / Japan
Weight	0.34 - 0.40 kg (2.0 kg shipping weight)
Dimensions	32 mm x 106 mm x 130 mm
Operating Temp	-20 to 60 deg C
Power Consumption	~400 mA at 5 VDC (backplane supplied)
Protocols	Vnet/IP, Ethernet TCP/IP
Bus Interface	Dual redundant Ethernet ports (RJ-45)
Data Rate	100 Mbps full duplex
Operating Humidity	10 to 95% RH (non-condensing)
Isolation Voltage	1500 VAC between communication paths and logic for 1 minute

Channel Isolation and DCS Signal Integrity

Yokogawa process control platforms depend on isolation barriers to prevent field-side voltage transients and loop interference from reaching central system processors. The SEC402-51 S1 incorporates 1500 VAC galvanic isolation between communication bus lines and internal backplane logic. Operating alongside 4-20 mA HART analog loops and digital I/O networks, this isolation prevents ground loop current propagation and maintains signal integrity across redundant system nodes.

Frequently Asked Questions

Q: How does the SEC402-51 S1 maintain bus communication if one network cable fails? A: The module incorporates dual redundant RJ-45 Ethernet ports to instantly reroute data traffic across the secondary path without interrupting control execution.

Q: What power rail supplies operating current to the SEC402-51 S1 module? A: The module draws operating power directly from the system backplane 5 VDC rail, consuming approximately 400 mA under full load.

Q: What diagnostic capabilities indicate active hardware communication errors? A: Integrated front-panel LED indicators and internal firmware error detection circuits continuously monitor bus traffic to report port status and link faults.

Field Installation Guidelines

Shut down backplane rack power or verify dual-redundant partner availability prior to installing or removing the module.
Align the module edge connector precisely with the rack slot guides to prevent bent backplane pins during physical insertion.
Insert CAT5e or CAT6 network cables into both RJ-45 redundant ports until locking tabs snap securely into place.
Route network communication cables in separate raceways away from high-voltage AC lines to prevent inductive noise interference.
Connect cabinet protective grounding conductors directly to the main station earthing bar using short, low-impedance copper drain cables.

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Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

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Maintenance Manager, USA

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Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

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Engineering Lead, Germany

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We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.