Description

• Model: CP471-00
• Brand: Yokogawa Electric
• Series: CENTUM VP Field Control Station
• Core Function: Executes field control station control processing
• Type: Processor Module
• Key Specs: Approx. 700 g; dual-redundant operation; Vnet/IP interface
• Supported FCS: AFV30, AFV40, A2FV50, A2FV70
• Software Requirement: CENTUM VP R5.01 or later, with applicable support patch

Product Introduction

Yokogawa CP471-00 is a basic-type processor module for CENTUM VP Field Control Units. It is designed for AFV30, AFV40, A2FV50, and A2FV70 field control architectures and can operate as a pair in a dual-redundant configuration. Yokogawa specifies the -0 suffix for units without explosion protection and the second 0 for the basic type.

The module weighs approximately 700 g and uses a redundant Vnet/IP control-bus interface within the applicable field control unit. CP471 support starts from CENTUM VP R5.01, but the required software patch depends on the installed release. For an existing CP461 system, replacement is subject to specific engineering restrictions; Yokogawa states that CP461-to-CP471 replacement must be performed by an authorized service engineer.

Key Technical Specifications

Yokogawa’s specification identifies CP471 as the processor for the listed CENTUM field control units and confirms the dual-redundant Vnet/IP architecture. The document also gives the mechanical dimensions and a nominal weight of approximately 700 g.

Yokogawa CP471-00

Application and Selection Notes

This module belongs inside the CENTUM VP Field Control Unit, rather than acting as a standalone PLC CPU. It handles the processor role for applicable AFV and A2FV field-control architectures. Yokogawa’s broader CENTUM VP architecture uses Field Control Stations, I/O, and a control network as the core DCS structure.

The useful distinction for procurement is simple: CP471-00 is not just “a CENTUM CPU.” The suffix identifies the basic, non-explosion-protected version. Yokogawa also specifies different mounting combinations depending on the field control unit and suffix configuration.

For a dual-redundant installation, two processor modules can be used together. Yokogawa allows online replacement of CP471 in a dual-redundant configuration by the user, subject to the published system conditions.

Quality Inspection and Pre-Shipment Checks

1. Incoming inspection: Verify the Yokogawa label, complete model code, serial number, hardware condition, connector condition, and available source documentation.
2. Live test: Use a compatible CENTUM VP field-control test environment where available. Check processor startup, diagnostics, redundancy status, control-bus communication, and system recognition. Record the results in a Test Report.
3. Electrical checks: Inspect supply and connector paths, grounding continuity, and relevant electrical parameters according to the approved test procedure.
4. Firmware and configuration verification: Read and record the installed software or hardware revision where accessible. Confirm the CENTUM VP release and support patch required by the customer’s installation.
5. Final QC: Photograph the nameplate and hardware condition, use ESD-safe packaging, add shock protection, and retain the signed QC record.

Test photos and available Test Reports can be provided with the shipment when requested.

Technical Replacement Risks

Software revision mismatch. CP471 requires CENTUM VP R5.01 or later, and Yokogawa specifies support patches for several R5 and R6 releases. Do not assume a new processor will communicate correctly with an old FCS software environment.

CP461 replacement restrictions. Technically, CP461 can be replaced with CP471 under the specified architecture, but Yokogawa explicitly states that a CP461-to-CP471 replacement must be performed by an authorized Yokogawa service engineer. CP461 and CP471 also cannot coexist as the two processors in the same dual-redundant pair.

EC401 revision mismatch. Yokogawa requires the associated ESB bus coupler EC401 to have style code S3 or later for CP471. This is easy to miss when sourcing the processor as a stand-alone spare.

Explosion-protection mismatch. CP471-00 is the non-explosion-protected suffix. Do not substitute it for a configuration that requires a different protection designation. Yokogawa provides separate suffix combinations for explosion-protection applications.

Replacement records. Take photos of the old processor, module position, connector arrangement, and revision markings before removal. That simple record often saves more commissioning time than another round of fault-finding.

Purchase and Logistics Notes

For international procurement, describe the item as Yokogawa CP471-00 CENTUM VP Processor Module, basic type, without explosion protection. State the actual condition separately: New Original, New Surplus, Refurbished, or Repaired.

The purchase order should also request confirmation of:

• Complete model and suffix
• Hardware revision
• Serial number
• Firmware or applicable software compatibility
• Test status
• Warranty period
• Country of origin
• Package dimensions and gross weight

For export packaging, use an antistatic bag, rigid cushioning, and moisture protection suitable for the transport route. Keep the commercial invoice, packing list, nameplate, and purchase order consistent.

Quick Conclusion

• CP471-00 is a Yokogawa CENTUM VP processor module for supported field control units.
• It supports dual-redundant processor operation and a dual-redundant Vnet/IP control-bus interface.
• The unit weighs approximately 700 g and is compatible with AFV30, AFV40, A2FV50, and A2FV70 field control units under specified configurations.
• CENTUM VP R5.01 or later is required, with the applicable support patch for the installed release.
• CP461 replacement and EC401 compatibility require special attention before field installation.

FAQ

What is Yokogawa CP471-00?

It is a processor module used in CENTUM VP field control units, including AFV30, AFV40, A2FV50, and A2FV70 configurations.

Can CP471-00 operate redundantly?

Yes. Yokogawa specifies that two CP471 modules can be used in a dual-redundant configuration on a duplexed field control unit.

What does the “-00” configuration mean?

The first “-0” indicates without explosion protection, while the second “0” identifies the basic type.

Can CP471-00 directly replace CP461?

Not as a simple user-level swap. Yokogawa specifies conditions for CP461-to-CP471 replacement and states that the replacement must be performed by an authorized Yokogawa service engineer.

What software version is required?

CP471 operates with CENTUM VP R5.01 or later, with specific support patches required for documented R5 and R6 releases.

What should be checked before purchasing?

Verify the complete suffix, field control unit model, CENTUM VP release, EC401 style code, redundancy arrangement, and explosion-protection requirements. A part-number-only match is not enough for this controller family.