Description
Note: Many products are not yet listed. Please contact us for more product information. Our supply channels are constantly expanding, and we currently have 20 stable shared supply channels. Please confirm the model, product, price, and all other necessary information with customer service before placing an order. We offer new, refurbished, and used products, and prices are adjusted according to the year of the item you require.
3. Product Introduction
As the V-net coupler in a Yokogawa CENTUM rack, the AIP571 carries control-network traffic between the station and the rest of the segment. It fills one backplane slot, draws from the rack supply, and is mapped through the station configuration — not through front-panel menus. When a station drops off V-net and the rack still runs locally, this module is the first place to look (—though your mileage may vary depending on rack revision and firmware). Replacement speed matters more than spec-sheet bravado.
AIP571
AIP571
AIP571
AIP571
4. Key Technical Specifications
| Parameter | Value |
|---|---|
| Catalog Number | AIP571 |
| Brand | Yokogawa |
| Product Type | V-net communication coupler module |
| Host Platform | CENTUM-family rack — confirm rack model and slot restrictions in the OEM manual |
| Communication Interface | V-net control network — verify cable type and segment rules with OEM datasheet |
| Port Count / Connector | Verify exact port count and connector style with OEM datasheet |
| Backplane Interface | Rack backplane — verify exact current draw with OEM datasheet |
| Configuration | Station/rack configuration file; V-net domain and station address must match the segment |
| Firmware/Revision | Must sit inside the rack firmware support matrix |
| Operating Temperature | Verify exact range with OEM datasheet |
| Hot Swap | Confirm permission in the OEM manual before live removal |
| Condition | New Surplus or Refurbished |
5. Field Application & Technical Pitfalls (The Engineer’s Guide)
Where this module is critical:
- CENTUM stations on a V-net segment where loss of the coupler isolates the station from operators and peer nodes.
- Process units with redundant V-net cabling where one coupler failure must not take down the station — but a misconfigured replacement can.
- Legacy DCS racks kept alive because the process side still runs and a controls migration is a capital project, not a maintenance order.
Three pitfalls that bite during replacement:
- V-net domain and station address mismatch. The coupler must carry the same domain and station address as the old unit. Warning: a spare set to a different domain will power up, show link activity, and still fail to join the segment. Check the station configuration file, not just the physical slot.
- Cable, connector, and segment termination. V-net cabling follows strict segment rules. Warning: a wrong connector or a missing terminator can produce intermittent communication faults that look like a bad coupler. Confirm cable type, length, and termination against the OEM drawing before you energize the segment.
- Firmware, slot mapping, and hot-swap permission. The module must be recognized in the same slot and supported by the rack firmware. Warning: do not assume live removal is allowed for your slot. Well, technically some racks support live insertion — but “some” is not “yours.” Remove rack power and ground yourself before touching the backplane connector.
Lesson learned: A technician swapped a failed coupler for a shelf spare, powered up, and watched the station stay isolated from V-net. Root cause — the spare carried the wrong domain setting, and nobody reloaded the station file. Two hours of troubleshooting for a five-minute configuration check.
6. Quality Control (QC) SOP & Transparency
- Inbound Verification. Each module is checked against the OEM packing list, label typography, serial number format, and date-code range. Firmware revision and connector condition are logged before the unit enters stock.
- Live Rig Testing. The module is seated in a compatible CENTUM test rack with a V-net simulator. We power on, confirm rack recognition, and verify that the coupler joins the test segment and exchanges data.
- Parameter Testing. Backplane current draw, connector continuity, and link status are checked against the OEM datasheet where published. Undocumented values are flagged for buyer confirmation rather than guessed.
- Final QA & Packaging. The module ships in an anti-static bag with a QC-passed label, a test record showing the firmware revision we verified, and photos of the connector layout when available.
7. Frequently Asked Questions (FAQ)
Can I hot-swap this module in a live CENTUM rack? Do not assume so. Some racks support live removal, but the OEM manual and your site procedure decide. If live removal is not explicitly permitted for that slot, remove rack power first.
How do I confirm it matches my rack? Send the rack model, firmware revision, slot number, old module label photo, and the V-net domain/station address. We cross-check the catalog number and test record before shipping. Exact fit still depends on the OEM support matrix for your rack firmware.
What’s the warranty? 12 months from delivery for functional failure under normal operation. Cables, fuses, and other consumables carry a 90-day replacement guarantee.
How can I tell genuine OEM from refurbished? Genuine units carry the original Yokogawa label with consistent typography and a traceable serial number. Refurbished units carry our QC tag in addition to the OEM label, and we disclose condition on the quote.
Does it ship with a configuration file? No. We ship a test record, not your station file. The coupler must be configured to match your V-net domain, station address, and rack slot.
Does it come with the V-net cable? No. Cable and connectors are separate items. Confirm the cable type and connector style against the OEM drawing for your segment.
What do you need to quote the right replacement? Rack model, firmware revision, slot number, old label photo, and V-net domain/station address. That five-minute upload prevents most wrong-part returns.
