YOKOGAWA AFV10D-S41101 | Duplexed Field Control Unit

• Model: AFV10D-S41101
• Brand: Yokogawa
• Series: AFV10D Field Control Unit
• Core Function: Provides duplexed field control for Vnet/IP and FIO systems
• Type: Duplexed Field Control Unit
• Key Specs: 100-120 VAC supply, dual-redundant Vnet/IP, 19-inch rack mounting

Product Introduction

Yokogawa AFV10D-S41101 is a duplexed Field Control Unit (FCU) for Vnet/IP and FIO architectures. The published configuration is designed for 19-inch rack mounting and includes dual-redundant Vnet/IP and power supply arrangements. Its S41101 suffix specifies a 100-120 VAC power configuration and LFS1500 control function.

For an operating DCS, the redundancy detail matters more than the cabinet footprint. This configuration uses redundant Vnet/IP and power, with published power consumption of about 200 VA at 100-120 VAC and an approximate 8 kg unit weight. One caution: this legacy configuration has been listed as obsolete or updated to AFV10D-S41151 by some industrial suppliers, so exact replacement compatibility should be checked before procurement.

Key Technical Specifications

The configuration details above are supported by published supplier descriptions and Yokogawa-related technical listings. In particular, the S41101 suffix is identified with 100-120 VAC operation and LFS1500 control functionality.

YOKOGAWA AFV10D-S41101

Application and Selection Notes

This FCU is intended for Yokogawa DCS installations using Vnet/IP and FIO, particularly where field-control redundancy is part of the system design. The 19-inch rack format suits centralized control cabinets, while the dual-redundant network and power configuration is intended for applications where a single communication or power-path failure should not immediately interrupt the control architecture.

It is a poor choice for a new project unless the system specifically requires this hardware generation. For an existing CENTUM/Vnet-IP installation, though, an exact configuration match can be the more practical maintenance decision.

Procurement note: Public listings are inconsistent on current availability. Some suppliers report stock, while others classify the part as obsolete or unavailable. Confirm actual physical stock, hardware revision, replacement status, country of origin, and lead time before issuing a purchase order.

Commercial and Logistics Information

For China-origin export shipments, the commercial invoice should describe the actual hardware and condition accurately. Do not declare a generic “PLC module” if the unit is a duplexed field control unit; inaccurate descriptions can trigger customs questions or import classification problems.

Quality Inspection and Test SOP

1. Inbound inspection

Verify supplier traceability, packing documents, serial number, nameplate, and configuration code. Inspect the enclosure for corrosion, scratches, yellowing, impact marks, or evidence of prior repair. Check accessories against the supplied documentation.

2. Live test

Use a compatible Yokogawa Vnet/IP/FIO test environment where available. Check power-up diagnostics, status indicators, network communication, redundancy behavior, and system recognition. Where the test setup permits, perform a representative control-system communication test and document the result in a Test Report.

3. Electrical testing

Check grounding continuity and applicable insulation resistance. A 500 V insulation-resistance test and >10 MΩ criterion should only be used where appropriate for the equipment design and supplier procedure; do not apply an arbitrary megohmmeter test directly across sensitive electronic circuits.

4. Firmware and configuration verification

Record firmware and hardware revisions where accessible. Photograph DIP switches, jumpers, and configuration markings before replacement. Back up the existing configuration whenever the maintenance system permits.

5. Final QC and packaging

The QC inspector signs off the inspection record. Protect the unit in an ESD bag, add bubble protection, use a suitable carton, and attach a QC Passed label with the inspection date. Test photos or video can be supplied when the corresponding test has actually been performed.

Common Replacement Risks

Firmware or revision mismatch: A replacement unit may communicate differently from the installed system if the hardware revision or system software is outside the expected range. Record the original revision before ordering.

Redundancy configuration error: Do not assume every AFV10D suffix has the same power and network arrangement. The S41101 configuration specifically identifies dual-redundant Vnet/IP, redundant power, and 100-120 VAC operation.

Cable and connector mismatch: Check the original wiring diagram. Vnet/IP network cabling, grounding, and cabinet termination should match the existing installation.

Power specification: A 100-120 VAC configuration must not be treated as interchangeable with a 220-240 VAC variant. Check the complete suffix before energizing.

ESD: Use a grounded wrist strap and ESD-safe work surface. Legacy control hardware can be damaged before the first diagnostic check.

One field habit still pays off: photograph the old unit and every terminal connection before removal. It is faster than rebuilding a cabinet configuration from memory.

Related Models

AFV10D-S41151: A later configuration referenced by some suppliers as the update or replacement for S41101. Confirm exact system compatibility before substitution.

AFV10D-S41251: Another AFV10D duplexed FCU configuration with a different suffix arrangement. Do not substitute solely on the AFV10D base model.

AFV10D-S41161: A related AFV10D configuration for Vnet/IP and FIO applications with different option coding.

Quick Conclusion

• Duplexed Yokogawa Field Control Unit for Vnet/IP and FIO.
• 19-inch rack-mount architecture.
• 100-120 VAC power configuration.
• Dual-redundant Vnet/IP and power supply arrangement.
• Approx. 200 VA consumption and 8 kg weight are published figures for the relevant configuration.
• Best suited to maintaining an existing Yokogawa control-system installation.
• ⚠️ Legacy status: verify whether the installed system requires S41101 or the later S41151 configuration before purchase.

FAQ

What is YOKOGAWA AFV10D-S41101?

It is a duplexed Field Control Unit designed for Yokogawa Vnet/IP and FIO systems in a 19-inch rack configuration.

What power supply does the S41101 configuration use?

The S41101 suffix is associated with a 100-120 VAC power supply configuration.

Does it support redundant communication?

Yes. The published configuration specifies dual-redundant Vnet/IP together with dual-redundant power supply architecture.

Is this part still available?

Availability varies by supplier. Some listings report stock, while other sources classify the exact part as obsolete or unavailable. Physical inventory and lifecycle status should be confirmed before ordering.

What should be checked before replacing it?

Verify the complete suffix, AC input voltage, Vnet/IP redundancy arrangement, firmware/hardware revision, rack position, wiring, and whether the installed system has migrated to the AFV10D-S41151 configuration.

What is the usual warranty?

A 12-month supplier warranty is commonly advertised for new or tested units, but the actual warranty should be stated on the quotation and Proforma Invoice before payment.