YOKOGAWA AAR145-S00 S1 Replacement for CENTUM VP DCS

Product Overview

YOKOGAWA AAR145-S00 S1 Replacement for CENTUM VP DCS: Smooth Migration from Legacy RTD Input Systems

The YOKOGAWA AAR145-S00 S1 is a high-precision RTD/Potentiometer Input Module designed for the CENTUM VP Distributed Control System platform. As legacy CENTUM CS 3000 and early CENTUM VP installations reach end-of-life or face spare-parts shortages, plant engineers and procurement teams are actively seeking verified drop-in replacements that preserve existing wiring infrastructure, I/O mapping, and control logic without requiring a full system overhaul.

At TOPNLMS, we stock the AAR145-S00 S1 as a direct replacement module for facilities transitioning away from discontinued RTD input cards. Whether your facility is running a phased migration from CENTUM CS 3000 to CENTUM VP, or simply replacing a failed card in an existing CENTUM VP rack, this module delivers the same channel count, signal range, and communication behavior as the original — minimizing engineering rework and commissioning time.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful CENTUM VP migration rarely involves a single module swap. In practice, replacing the AAR145-S00 S1 is one step in a broader field control station (FCS) refresh that may also involve the AAI141-S03 Analog Input Module for 4–20 mA current loop channels running alongside RTD inputs in the same FCS rack. Where temperature measurement points are co-located with pressure or flow transmitters, engineers often replace the AAI143-S03 High-Speed Analog Input Module simultaneously to maintain scan-rate consistency across the I/O map.

For facilities upgrading communication infrastructure at the same time, the ACF11 Vnet/IP Communication Module is commonly refreshed during the same maintenance window to ensure the FCS backplane operates on a consistent firmware baseline. Power integrity is equally critical: the APW100 Power Supply Module and its redundant pair are typically inspected and replaced if the FCS has been in continuous service for more than seven years, since power module degradation is a leading cause of unexplained I/O faults in aging CENTUM VP installations.

On the output side, plants replacing RTD input cards often audit their AAO145-S03 Analog Output Modules at the same time, particularly where control loops feed pneumatic valve positioners or variable-frequency drives. If the control cabinet also houses a YOKOGAWA FieldMate-compatible field device interface, the ALF111 FOUNDATION Fieldbus Communication Module may be part of the same upgrade scope for facilities running hybrid HART and FF device networks.

For plants that have already migrated their HMI layer to CENTUM VP Engineering Station (ENG) or CENTUM VP Operator Station (HIS), the AAR145-S00 S1 replacement requires no software reconfiguration — the I/O builder in CENTUM VP Builder recognizes the module by its hardware address and slot position, preserving all existing tag assignments and alarm setpoints. This is a key advantage over cross-brand migrations, where re-engineering the I/O database can represent weeks of project time.

Where physical space in the control cabinet is constrained, the AAR145-S00 S1 occupies the same single-slot footprint as its predecessor, eliminating the need for bracket modifications or cable tray rerouting. This is particularly valuable in offshore platforms and compact skid-mounted control panels where every millimeter of DIN rail space is accounted for.

Retrofit Guidance FAQ

Q: Can I replace the AAR145-S00 S1 without rewiring the terminal block?
Yes. The AAR145-S00 S1 uses the same 3-wire RTD terminal block pinout as its predecessor. In most CENTUM VP installations, the field wiring can remain untouched. Verify the terminal block model (e.g., TB820V or equivalent) is compatible before removal.

Q: Do I need to update the CENTUM VP Builder configuration after swapping the module?
No reconfiguration is required if the replacement module carries the same model number and suffix. The FCS will recognize the module automatically upon hot-swap or cold restart. If the suffix differs (e.g., S00 vs. S03), verify the I/O builder hardware definition matches the installed suffix to avoid diagnostic alarms.

Q: Is the AAR145-S00 S1 compatible with CENTUM CS 3000 racks?
The AAR145-S00 S1 is designed for CENTUM VP FCS racks (ANB10D/ANB11D). It is not directly interchangeable with CENTUM CS 3000 hardware without an FCS rack upgrade. If you are migrating from CS 3000, a rack replacement is part of the scope.

Q: What communication protocol does this module use internally?
The AAR145-S00 S1 communicates over the YOKOGAWA Vnet/IP internal FCS bus. It does not require external Ethernet or HART configuration. All signal processing and data transmission to the FCS controller are handled via the backplane.

Q: Can this module be used in a redundant FCS configuration?
Yes. The AAR145-S00 S1 supports CENTUM VP’s dual-redundant FCS architecture. When installed in a redundant pair of FCS racks, the module participates in automatic switchover without signal interruption, provided both primary and secondary slots are populated with matching module types.

Q: How do I verify the module is functioning correctly after installation?
Use CENTUM VP Builder’s online diagnostic view to confirm the module status LED and channel health indicators. Each RTD channel should report a valid resistance reading within the configured engineering range. Out-of-range or open-circuit alarms indicate wiring issues rather than module faults in most cases.

Warranty Assurance

Every AAR145-S00 S1 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of delivery. Prior to dispatch, each module undergoes a pre-shipment functional inspection that verifies power-up behavior, channel continuity, and communication bus response. Units that do not pass inspection are quarantined and not offered for sale.

In the event of a confirmed module defect within the warranty period, TOPNLMS provides a replacement unit or full refund at the buyer’s discretion. Our after-sales response target is 24 hours for warranty claims submitted via email. Replacement units are dispatched from our Xiamen warehouse, with DHL Express and FedEx International Priority available for time-critical plant situations.

For procurement teams requiring documentation, we can provide a test report, packing list, and commercial invoice with each shipment. Long-term service agreements and consignment stock arrangements are available for facilities with ongoing CENTUM VP maintenance programs.

Contact our technical sales team to confirm compatibility with your specific FCS revision, rack configuration, or control system architecture before placing your order.