Yokogawa SB401-50 ESB Bus Interface Slave Module

SKU SB401-50

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12-month warranty
Free returns within 30 days

Manufacturer: Yokogawa
Product No.: SB401-50
Country of origin:Japan
Product Type: ESB Bus Interface Slave Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 500g
Dimensions: 22.7cm x 15.4cm x 6.4cm
Shipping port: Xiamen
Warranty: 12 months

Description

The SB401-50 is the ESB Bus Slave Interface Module for Yokogawa CENTUM-VP FIO Node Units (ANB10S/ANB10D/ANB11S/ANB11D). It mounts on the A2BE2D Base Plate alongside PW481/PW482/PW484 PSU modules and FIO I/O modules, and connects via an A2EE1A ESB Bus Adapter + YCB301 dedicated cable (max. 10 m) to the FCU-side ESB Bus Coupler (EC401 or EC402) in AFV30/AFV40 Field Control Units. Dual-redundant node configurations use two SB401 modules per node. The ESB bus runs at 128 Mbps, bus topology, redundancy available, max 13 ESB + Optical ESB Node Units per FCU.

Features

ESB Bus Slave Interface for CENTUM-VP FIO architecture
Mounts on A2BE2D Base Plate (Node Unit for FIO)
Compatible Node Units: ANB10S, ANB10D, ANB11S, ANB11D
Dual-redundant configuration support (2 modules per node)
ESB transmission speed: 128 Mbps
Paired with FCU-side EC401 (max. 9 nodes) or EC402 (max. 9 upper + 9 lower)

Applications

CENTUM-VP FCS remote I/O node construction via ESB bus
FIO I/O aggregation (analog, digital, comm, turbomachinery) under ANB10/ANB11
Redundant ESB architectures with AFV30/AFV40 FCU
Cabinet I/O expansion for existing CENTUM-VP FIO installs

Ordering Information

Per your suffix breakdown:

Model	Suffix 1	Suffix 2	Description
SB401	-5	0	ESB Bus Interface Slave Module, Basic type, Standard type with no explosion protection

→ SB401-50 = SB401 + Suffix1=-5 (Basic) + Suffix2=0 (Standard, no explosion protection)

Supporting build items for a complete FIO Node Unit (GS 33J60A10-01EN):

Model	Description	GS Ref
A2BE2D	Base Plate for FIO Node Unit	GS 33J60G30-01EN
PW481 / PW482 / PW484	Power Supply Module (Node Unit)	GS 33J60E70-01EN
SB401	ESB Bus Slave Interface Module	GS 33J60G40-01EN
A2EE1A	ESB Bus Adapter (for SB401)	GS 33J60G40-01EN
ADCV01	Dummy Cover (Processor / I/O / Bus Interface slot)	—
ADCV02	Dummy Cover (PSU slot)	—

Technical Specifications

Attribute	Specification
Manufacturer	Yokogawa Electric Corporation
Product Type	ESB Bus Slave Interface Module
Series	CENTUM-VP FIO
Model	SB401-50
Compatible Node Unit	ANB10S, ANB10D, ANB11S, ANB11D
Base Plate	A2BE2D
Required Adapter	A2EE1A ESB Bus Adapter
ESB Speed	128 Mbps
ESB Cable	YCB301 dedicated, max. 10 m (EC401); EC402: 10 m upper + 10 m lower
FCU-Side Coupler	EC401 or EC402 (FCU slot 7 / 7+8)
Max Nodes per FCU	13 total (ESB + Optical ESB)
Redundancy	2 × SB401 per node (ANB10D/ANB11D)
Operating Temp (Node envelope)	0 to 60 degC (SB401 not in the 0-50-restricted list, GS p2 *1)
Storage Temp	-20 to 60 degC (std) / -40 to 85 degC (temp option)
Humidity	5 to 95 %RH, non-condensing
Vibration	0.25 mm (1-14 Hz), 2.0 m/s² (14-100 Hz)
Shock (packed transport)	49 m/s² horizontal, 98 m/s² vertical
Altitude	2000 m max
Origin	Japan

SB401 carries Factor = 0 (single & dual) in the node-unit PSU loading table (GS 33J60A10-01EN p14-15 "Others"), so it does not consume PSU budget — only the I/O modules do.

Connections / Interfaces

Interface	Function
A2BE2D backplane	Power + data from node PSU and I/O modules
SB401 front → A2EE1A	ESB Bus Adapter, provides YCB301 port toward FCU
YCB301 cable	SB401 (via A2EE1A) ↔ FCU EC401/EC402, max 10 m
FCU slot 7 / 7+8	EC401 (single/dual) or EC402 (single/dual) ESB Coupler

Installation Guidelines

CRITICAL WARNING — De-energize PW48x PSU and verify lockout before handling SB401 on A2BE2D. The base plate backplane is live from the PSU module.

PSU first — Install PW481/PW482/PW484 into A2BE2D's PSU slot; this powers the entire node backplane.
SB401 slot — Insert SB401 onto A2BE2D guide rails, latch front. Dual nodes (ANB10D/ANB11D): populate two SB401 in the bus-interface positions.
A2EE1A — Fit A2EE1A ESB Bus Adapter on SB401 front connector.
Cabling to FCU — YCB301 from A2EE1A → FCU EC401 (1×, max 9 nodes) or EC402 (upper+lower, 9 each side). Total ≤13 ESB+Optical ESB nodes/FCU.
Empty slots — Cover unused A2BE2D slots with ADCV01 (I/O/Bus IF) or ADCV02 (PSU).
High-temp option (-20 to 70 degC) on node — max 4 I/O modules/node; ≥1 empty slot between SB401/ANTx and I/O; ≥1 between I/O↔I/O; ≥2 between duplexed I/O pairs.
Grounding — Per local regs (GS 33J60A10-01EN p2). Single-point scheme consistent with FCU cabinet.

FAQ

What do the '-5' and '0' suffixes mean on SB401-50?

Two-position suffix: '-5' = Basic type; '0' = Standard with no explosion protection (non-hazardous area). SB401-50 = SB401 + -5 + 0, typically deployed in ANB10/ANB11 Node Units with PW484 24 V DC PSU for non-XP cabinets.

Does SB401 require a separate adapter to connect the ESB cable?

Yes. A2EE1A ESB Bus Adapter mounts on the SB401 front connector and provides the physical port for the YCB301 dedicated ESB cable running to the FCU-side EC401 or EC402.

Does SB401 count toward the node-unit PSU loading factor?

No. In GS 33J60A10-01EN the SB401 falls under 'Others' with Factor = 0 (single & dual). Only the I/O modules consume the node PSU budget; the bus interface itself draws negligible budget.

Can SB401 be used in an Optical ESB Node Unit (ANB11)?

Yes. ANB11S/ANB11D still carry SB401 on the A2BE2D for the ESB segment; the optical leg is handled by ANT401/ANT411 master + ANT502/ANT512 slave. The SB401 + A2EE1A face remains the same across ANB10 and ANB11.

What is the max number of SB401-based nodes per FCU?

Up to 13 total ESB + Optical ESB Node Units per AFV30/AFV40 FCU. Each node has its own SB401 (or SB401 pair in dual-redundant nodes). FCU side: EC401 supports max 9 nodes; EC402 supports max 9 upper + 9 lower.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
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12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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TECHNICAL SPECIFICATIONS

Color pattern	Greyish White
Country of origin	Japan
Power source	DC Power