ABB · GENERAL PURPOSE DRIVES
Migration background and scope of application
ACS580 continues the application focus of ABB's universal drive, but is different from ACS550 in the base, control terminals, control panel, option code and some parameter organization. The safest approach is to start from the complete part number and option code of the original ACS550 and confirm the new ACS580 item by item.
Use these part numbers to identify legacy equipment and evaluate migration paths. Before ordering, verify the complete ordering code, nameplate, motor or load conditions, existing wiring and required site functions.
Common legacy part numbers and successor models
| legacy model / Legacy | original product description | Successor / Replacement direction | replacement notes |
|---|---|---|---|
| ACS550-U1-012A-4 | ACS550, 480V class | ACS580-01-012A-4 | Typical official replacement relationship |
| ACS550-U1-023A-4 | ACS550, 480V class | ACS580-01-023A-4 | Check enclosure/options |
| ACS550-U1-031A-4 | ACS550, 480V class | ACS580-01-027A-4 | Note that the current code is not a direct copy |
| ACS550-U1-059A-4 | ACS550, 480V class | ACS580-01-052A-4 | Check dimensions, I/O and options |
What needs to be checked before replacement
Procurement and migration advice
If the legacy part number still has reliable inventory, the purchase of spare parts for the original model can be evaluated first; if the equipment still needs to be operated for a long time, the successor platform should be evaluated simultaneously. For discontinued parts, the real risk is often not "will the new model start?" but rather whether the wiring, communications, software engineering, mounting dimensions, or whether a legacy option will still meet field requirements after migration.
When sending an inquiry, it is recommended to also provide the complete part number, quantity, photo of the equipment nameplate, site voltage/motor parameters, and whether successor models are accepted. In this way, "original model inventory" and "successor model migration" can be compared together as two sets of plans.
Frequently Asked Questions
Can ACS550 be directly replaced by ACS580?
Many applications can be migrated to the ACS580, but should not be considered unconditional plug-and-play. Check current, options, wiring, dimensions and parameters.
Why is the ACS580 corresponding to ACS550-031A-4 not 031A?
The rated current brackets and ordering codes of different product platforms are different, so the numerical codes cannot be simply copied.
Do option codes like B056 need to be retained?
Need to check. The degree of protection and other option codes affect the final ACS580 configuration.
Is it okay if I only provide photos of the old drive?
Yes, but it is best to provide a photo of the complete nameplate and the motor nameplate to facilitate confirmation of voltage, current and options.
Need to check for a specific legacy part number?
By sending the complete part number, nameplate or BOM, we can confirm the availability of the original model before determining whether a successor model is needed.
