SB311 S1
SB311 S1
SB311 S1
SB311 S1
SB311 S1
SB311 S1
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SB311 S1

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Yokogawa SB311 S1 is an SOE Interface Module that connects a field control station to an SOE server and accepts IRIG-B time synchronization.
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Technical specifications for SB311 S1

  • Manufacturer:
    Yokogawa
  • Part Number:
    SB311 S1
  • Product Family:
    Centum CS-Centum VP
  • Product Type:
    SOE Interface Module
  • Stock:
    1
  • Module Role:
    Sequence of Events interface
  • Server Interface:
    Ethernet 10BASE-T
  • Time Synchronization:
    RS-422 input for IRIG-B
  • Redundancy:
    Dual-redundant configuration supported
  • System Scale:
    Up to 16 supported FCS connections per SOE server
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Japan
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Server Link Time Sync Redundancy Test

Features:

  • Ethernet event-data path to the SOE server
  • RS-422 input for IRIG-B time synchronization
  • Dual-redundant interface arrangement for supported FCS architectures
Yokogawa SB311 S1 connects a supported field control station to the Sequence of Events server and transfers timestamped event records.

Event transport and time synchronization use separate interfaces, so a healthy Ethernet connection does not by itself prove correct event timing.

Replacement planning must preserve the redundant slot arrangement, SOE server settings, Ethernet configuration, and the IRIG-B source used by the installed project.

Availability of Yokogawa SB311 S1 is subject to Apter Power inventory and sourcing confirmation.
Verified resources for Yokogawa SB311 S1: Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Yokogawa SB311 S1 SOE Interface Module Specs

General

  • ManufacturerYokogawa
  • ModelSB311 S1
  • ConditionNew Original ready stock
  • Product FamilyCENTUM Sequence of Events Interface Modules
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

SOE communication path

  • Ethernet role: Carry event records from the FCS interface to the configured SOE server.
  • Address record: Preserve approved network settings and server assignments before replacement.
  • System scale: Compare connected supported FCS units with the documented server architecture.
  • Event proving: Generate a controlled event and confirm receipt at the server.

IRIG-B verification

  • Separate path: Treat RS-422 timing as independent from the Ethernet event-data link.
  • Source health: Confirm the approved IRIG-B source and distribution equipment are operating.
  • Wiring check: Inspect polarity, shielding, terminations, and continuity of the timing circuit.
  • Timestamp test: Compare a known event with the project’s approved reference clock.

Pair acceptance

  • Role capture: Record active and standby status before changing either module.
  • Controlled swap: Use the maintenance procedure to prevent loss of event collection.
  • Failover observation: Confirm event delivery and time alignment through a planned switchover.
  • Final record: Save alarms, test events, timestamp comparison, and restored pair status.
Description
The SB311 S1 serves as Yokogawa’s Sequence of Events interface in a supported field control station. Its Ethernet port carries event data to the SOE server, while the RS-422 connection accepts the IRIG-B timing signal used to align recorded events.

In the documented architecture, SB311 S1 can be deployed as a dual-redundant pair so event collection remains available across a controlled module switchover. One SOE server can communicate with multiple supported FCS units within Yokogawa’s stated system limit.

Before changing SB311 S1, preserve the FCS slot assignment, peer-module condition, Ethernet addressing, SOE server configuration, IRIG-B source, and time-synchronization records. Post-installation acceptance should confirm both event transfer and timestamp alignment rather than relying only on a healthy module indication.
Alternative Names
SB311S1 SB311-S1 SB311 S-1 SB 311 S1 Yokogawa SB311S1
Technical notes
For SB311 S1, preserve the dual-redundant slot plan, SOE server connection, and RS-422 IRIG-B timing path before replacement. Yokogawa documents up to 16 supported FCS connections per SOE server; verify the installed architecture, peer status, network settings, and timestamp accuracy during commissioning.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should timestamp accuracy be demonstrated after installing SB311 S1?
Generate a controlled SOE input, verify delivery to the SOE server, and compare its recorded time with the approved IRIG-B reference rather than relying only on module status.
What must remain documented when SB311 S1 is used in a redundant pair?
Preserve both slot assignments, peer status, switchover expectations, Ethernet settings, IRIG-B path, and the controlled FCS configuration before replacing either module.
Why is the RS-422 path critical to SB311 S1 event records?
The RS-422 connection carries the IRIG-B timing signal from the external master clock; a fault can leave event transfer working while timestamp accuracy is lost.
Which network evidence helps diagnose missing events through SB311 S1?
Check the module-to-SOE-server Ethernet path, port and hub status, addressing, server acquisition settings, and whether affected FCS events appear in the controlled test.
When should SOE server capacity be reviewed for an SB311 S1 project?
Review it when the architecture approaches Yokogawa's documented limit of 16 supported FCS connections per SOE server or when event volume and redundancy are being expanded.
What should procurement record before sourcing SB311 S1?
Provide the complete model and style, FCS model, slot and peer arrangement, Ethernet and IRIG-B interfaces, installed system documentation, quantity, and traceability requirements.

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