YOKOGAWA NFDV161-P01: Vnet/IP Digital Input Module

Technical Dossier

Product Details And Specifications

YOKOGAWA NFDV Series Technical Notes

The Evolution of NFDV Series Architecture

The NFDV module family was introduced as part of YOKOGAWA's transition from the legacy CENTUM CS 3000 platform to the CENTUM VP architecture, which adopted Vnet/IP (a deterministic, dual-redundant Ethernet-based control network) as its backbone. Early CENTUM CS 3000 I/O relied on the FCS (Field Control Station) bus with modules designated under the AMN/ADV/ADM naming conventions. The NFDV series replaced these with a standardized form factor compatible with the AFV10D/AFV20D Field Control Units (FCUs), enabling higher channel density and improved diagnostic transparency.

The architecture uses a dual-redundant I/O bus within the node unit, allowing individual module replacement without process interruption. NFDV modules communicate via the RIO (Remote I/O) bus to the FCU, with the FCU itself connected to the plant-wide Vnet/IP ring. This layered redundancy model is the primary reason NFDV-equipped systems remain in service well beyond their original design life — replacement modules must be sourced from the secondary market as YOKOGAWA has transitioned active development toward the CENTUM VP R6 platform and the newer Exaopc/OPC-UA integration layer.

Compatibility note: NFDV modules are not interchangeable with the older ADVM or ADMV series without FCU firmware validation. Cross-generation substitution requires confirmation of node unit hardware revision and I/O bus protocol version.

NFDV Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the YOKOGAWA NFDV / Vnet/IP field I/O module range. Each entry reflects a distinct hardware configuration. Functional categories: DI = Digital Input, DO = Digital Output, AI = Analog Input, AO = Analog Output, PWR = Power Supply, COMM = Communication/Node Unit.

• NFDV161-P01: 16-ch 24VDC digital input module, isolated, for CENTUM VP FCU node
• NFDV161-P02: 16-ch 24VDC digital input module, non-isolated, standard density
• NFDV162-P01: 32-ch 24VDC digital input module, high-density field I/O
• NFDV261-P01: 16-ch 24VDC digital output module, relay-driven, isolated contacts
• NFDV261-P02: 16-ch 24VDC digital output module, transistor output, sinking type
• NFDV262-P01: 32-ch 24VDC digital output module, high-density, transistor output
• NFDV141-P01: 8-ch analog input module, 4–20mA, 16-bit resolution, HART-enabled
• NFDV141-P02: 8-ch analog input module, 1–5VDC, 16-bit resolution
• NFDV142-P01: 16-ch analog input module, 4–20mA, high-density AI for CENTUM VP
• NFDV241-P01: 8-ch analog output module, 4–20mA, 16-bit, HART pass-through
• NFDV241-P02: 8-ch analog output module, 1–5VDC, non-HART configuration
• NFDV242-P01: 16-ch analog output module, 4–20mA, high-density AO
• NFBU100-S00: Node unit base for NFDV series, 10-slot I/O bus backplane
• NFBU050-S00: Node unit base, 5-slot compact configuration for small FCU nodes
• NFPS100-S00: Redundant power supply unit for NFDV node, 24VDC input
• NFPS050-S00: Single power supply unit for NFDV compact node, 24VDC
• NFCP100-S00: Node communication processor, Vnet/IP interface for NFDV node unit
• NFCP050-S00: Compact node communication processor, single Vnet/IP port

Quality Control for the NFDV Series Range

NFDV modules incorporate a dual-bus backplane architecture and onboard diagnostic ASICs that require specialized test procedures beyond standard power-on verification. DriveKNMS applies the following test protocol to all NFDV modules prior to shipment: