YOKOGAWA PS35*A Replacement/Upgrade for Centum VP/CS3000

Product Overview

YOKOGAWA PS35*A Replacement/Upgrade Solution for Centum VP/CS3000: Seamless Transition from Legacy DCS Power Infrastructure

The YOKOGAWA PS35*A is a rack-mounted DC power supply module designed for the Centum VP and CS3000 distributed control system platforms. As aging CS3000 installations approach end-of-support milestones and Centum VP sites expand or require redundant power configurations, sourcing a verified PS35*A replacement has become a critical procurement priority for instrumentation engineers and plant maintenance teams worldwide.

At TOPNLMS, we stock the PS35*A as a direct drop-in replacement for failed or end-of-life units within existing YOKOGAWA field control station (FCS) racks. Whether your site is executing a like-for-like swap to restore a tripped power rail, or planning a phased migration from CS3000 to Centum VP R6, this module delivers the same 24 VDC bus output, rack form factor, and backplane connector pinout as the original — eliminating the need for panel rewiring or rack modification.

Compatibility Comparison Table

Seamless Upgrade Solutions

A PS35*A replacement rarely occurs in isolation. In practice, a power supply failure or planned DCS modernization project involves coordinating multiple components across the same FCS rack or control room cabinet. During Centum VP and CS3000 upgrade projects, engineers commonly address the power distribution layer alongside I/O module refreshes, communication upgrades, and controller replacements.

For sites migrating from CS3000 to Centum VP R6, the AFV10D and AFV30D field control units are the target controllers, and their associated I/O racks require verified power budgets — making a tested PS35*A a prerequisite before commissioning new I/O cards. In redundant FCS configurations, a second PS35*A is typically installed in the adjacent power slot to maintain N+1 availability, ensuring the rack remains energized during the primary unit swap.

On the I/O side, AAI141-S and AAI543-H analog input modules are frequently refreshed in the same maintenance window as the power supply, since both share the same 24 VDC bus. Similarly, AAT141-S thermocouple input modules and ADV151-P digital output modules draw from the same power rail and should be verified for load compatibility after a PS35*A installation. For sites running HART-enabled field instruments, the ALF111 HART multiplexer module is often co-located in the same FCS rack and depends on stable power delivery from the PS35*A.

Communication infrastructure upgrades frequently accompany power module replacements. The ESB10D Vnet/IP bus coupler and the CP451-10 communication processor are common co-replacement items when a CS3000 FCS is being brought up to Centum VP network standards. If the site uses a BCV-L10 Vnet coaxial bus interface, verifying its power draw against the PS35*A output capacity is a standard commissioning step. For legacy sites still operating on RS-485 serial links, the SCP451 serial communication processor may also be present in the same rack and should be accounted for in the power budget calculation.

Control room infrastructure upgrades often include replacing the YOKOGAWA CENTUM VP Engineering Workstation (EWS) software license alongside hardware refreshes, and the PS35*A replacement is typically logged as a field change record (FCR) within the site’s CENTUM VP system builder configuration to maintain asset traceability.

Retrofit Guidance FAQ

Q: Can the PS35*A be installed without shutting down the FCS rack?
A: Hot-swap capability depends on whether your FCS rack is configured with dual redundant power supplies. If a second PS35*A or equivalent module is active in the redundant slot, the failed unit can typically be replaced without interrupting the control loop. Single-supply racks require a planned shutdown window. Always verify with your site’s CENTUM VP system documentation before attempting a live swap.

Q: Does replacing the PS35*A require any changes to the CENTUM VP system builder configuration?
A: No software or configuration changes are required for a like-for-like PS35*A replacement. The module is transparent to the FCS controller and does not appear as a configurable node in the system builder. However, the replacement should be logged as a field change record for audit and maintenance traceability purposes.

Q: Is the PS35*A compatible with both CS3000 and Centum VP racks?
A: Yes. The PS35*A is mechanically and electrically compatible with both CS3000 and Centum VP FCS rack types that use the standard YOKOGAWA power supply slot. Verify the rack model number against YOKOGAWA’s hardware compatibility matrix if you are unsure about your specific installation.

Q: What is the typical lead time for PS35*A from TOPNLMS?
A: In-stock units ship within 1–3 business days from our Xiamen warehouse. Express international shipping options (DHL, FedEx) are available for urgent plant maintenance requirements. Contact us at [email protected] for same-day quotation and shipping confirmation.

Q: Can TOPNLMS provide a test report or inspection certificate for the PS35*A?
A: Yes. Each unit undergoes pre-shipment functional testing. A test report confirming output voltage, load regulation, and visual inspection results is available upon request. This documentation supports your site’s incoming inspection and maintenance records.

Q: What communication protocols does the PS35*A support?
A: The PS35*A is a power supply module and does not implement an external communication protocol. It interfaces with the FCS rack via the internal YOKOGAWA backplane bus. No protocol configuration is required during installation.

Warranty Assurance

Every PS35*A shipped by TOPNLMS is covered by a 12-Month Warranty from the date of delivery. Our warranty process is straightforward: if the module exhibits any functional defect within the warranty period under normal operating conditions, we will arrange a replacement unit at no additional cost, including return shipping coordination.

Pre-shipment testing is performed on every unit. Output voltage regulation, ripple, and load response are verified against YOKOGAWA’s published specifications before the module is packaged. Units that do not meet specification are quarantined and not shipped.

For procurement teams requiring documentation, we provide a packing list, commercial invoice, and test report with each shipment. Certificate of Origin (CO) is available upon request for customs clearance purposes. All export documentation is prepared in compliance with Chinese customs regulations for industrial electronic components.

Our after-sales response time is within 24 hours on business days. For urgent plant maintenance situations, contact us directly by phone or email for priority handling.