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Copy| Product Name | Yokogawa A2FV70S-A311000 / A2FV70D-A411000 | RIO Upgrade FCUs |
| Item NO. | 2928420 |
| Weight | 0.1 kg = 0.2205 lb = 3.5274 oz |
| Category | YOKOGAWA |
| Brand | YOKOGAWA |
| Creation Time | 2026-10-30 |
Yokogawa · CENTUM VP RIO upgrade
CP471 controller execution · Vnet/IP dual-redundant · RIO Upgrade system role
Yokogawa A2FV70S-A311000 / A2FV70D-A411000 are Field Control Units for the CENTUM VP RIO System Upgrade path. Both use the CP471 standard processor and dual-redundant Vnet/IP; the S article uses single power and the D article uses dual-redundant power.
In the upgraded station, Yokogawa A2FV70S-A311000 / A2FV70D-A411000 connect controller processing to RIO, N-IO and supported FIO node arrangements shown in the system configuration. Existing field ownership must be traced to the new controller project without changing channel identity by assumption.
Before cutover, Yokogawa A2FV70S-A311000 / A2FV70D-A411000 require a verified node inventory, power plan, Vnet/IP addresses and application backup. The upgrade should restore one subsystem at a time so legacy wiring faults remain distinguishable from controller or configuration faults.
| Technical Item | A2FV70S-A311000 | A2FV70D-A411000 |
|---|---|---|
| Brand | Yokogawa | |
| Product Name | RIO Upgrade Field Control Unit | |
| Country | Japan | |
| Processor | CP471 standard type | |
| Vnet/IP | Dual-redundant | |
| Power execution | Single | Dual-redundant |
| Supply | 100–120 V AC | |
| Memory backup | Maximum 72 hours | |
| Battery recharge | Minimum 48 hours | |
| READY output | Provided | |
| Approximate weight | 6.9 kg | 7.7 kg |
| Mounting | 19-inch rack | |
Yokogawa A2FV70S-A311000 / A2FV70D-A411000 maintain control execution while the upgraded node paths, power state and retained memory are checked as separate operating conditions. The emphasis is on state transitions and dependencies during real operation, rather than repeating the numeric limits already listed in the specification table.
Bring power, controller and node paths online in a planned order for Yokogawa A2FV70S-A311000 / A2FV70D-A411000. Observe startup, ready, backup and degraded states as a sequence; a final ready indication alone does not show whether redundancy or a downstream path was lost.
Record battery condition and outage duration rather than assuming retained memory is unlimited. Keep supply, network and node behavior within the selected execution, and investigate unexpected transitions before returning the station to automatic control.
Combine READY status with network and node diagnostics before releasing field control. Record the stable operating result under the same project and hardware revision used during commissioning so later comparisons remain meaningful.
A RIO upgrade around Yokogawa A2FV70S-A311000 / A2FV70D-A411000 starts with a physical inventory and ends with loop-by-loop confirmation against the migrated project. The sequence is intentionally gated: article verification precedes mounting, mounting precedes termination, and commissioning begins only after the physical checks are complete.
Record cabinets, node units, power feeds and channel ownership before removal. Begin only after the complete article, mounting position and required companion hardware have been checked, and keep power isolated while the assembly is seated.
Verify rack mounting, earth, supply and both Vnet/IP paths before connecting field nodes. Do not force a connector, module or fibre that does not seat normally; recheck keying, alignment, bend radius and cabinet clearance before continuing.
Enable node paths gradually and compare representative loops with the saved migration list. Energize the installation in a controlled order, preserve the first status evidence and record the final functional check against the installed article.
Keep the legacy channel inventory, node position, new controller mapping, Vnet/IP addresses and cutover test results together with Yokogawa A2FV70S-A311000 / A2FV70D-A411000. The upgrade must retain signal identity across the old and new architectures.
The S article uses single power and is approximately 6.9 kg, while the D article uses dual-redundant power and is approximately 7.7 kg. Both remain 19-inch-rack FCUs for the RIO upgrade role.
Compare the complete Yokogawa A2FV70S-A311000 / A2FV70D-A411000 suffixes, processor execution, Vnet/IP power arrangement, I/O bus configuration, supply voltage and explosion-protection option. The family name alone does not define the installed station.
For Yokogawa A2FV70S-A311000 / A2FV70D-A411000, check both supply paths where fitted, processor and I/O-bus status, connected node units and the downloaded system configuration. Preserve the first diagnostic indication before resetting modules.
Record the full Yokogawa A2FV70S-A311000 / A2FV70D-A411000 article, cabinet position, processor type, software release, network addresses, bus layout, power execution and connected node list before any replacement is attempted.
Confirm the controller state first, then examine the Vnet/IP path and the ESB, N-IO or RIO path independently. A healthy network interface on Yokogawa A2FV70S-A311000 / A2FV70D-A411000 does not prove that its field I/O bus is complete.
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Moore Automation Sales Team
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