Replacing ABB ACS550 and ACS800 Drives with ACS580 and ACS880

ABB's drive lifecycle has four phases: Active, Classic, Limited and Obsolete. ACS550 (0.75–355 kW general-purpose) and ACS800 (the industrial workhorse from 2001) moved out of Active years ago; ACS550 is Limited and ACS800 Classic/Limited depending on frame, which means ABB still supplies some spares and repairs but no new drives, and the clock on component availability is running. ACS580 replaces ACS550; ACS880 replaces ACS800. In Vietnam and across ASEAN these drives sit on water pumps, cement fans, paper machines and extruders by the thousand, and the replacement wave is well under way. These are the practical points from doing it.

ACS550 → ACS580: mostly mechanical

The ACS580 (ACS580-01) is the general-purpose member of ABB's "all-compatible" family. It is smaller than the ACS550 for the same rating in most frames, which sounds good until you discover the mounting holes and cable-entry positions differ; keep the old mounting plate and drill a new pattern, or use ABB's adapter plates for frames R1–R4. Electrically, the control terminals are similar in function but not in numbering, so a one-page cross-reference is enough to rewire; the ACS580 has a built-in EMC filter (C2 standard) and brake chopper up to certain frames where the ACS550 needed options. Parameters are the real work: ACS550's 99xx–53xx groups map to the ACS580's 20–99 group structure, and ABB publishes a parameter cross-reference table — but the macros (Standard, 3-wire, Alternate, Hand/Auto, PID) differ in default terminal assignments. Our rule: do not try to clone; take the old parameter list, write down the fifteen that matter (motor data, min/max frequency, ramps, reference source, start/stop logic, PID settings, fault reactions) and set those deliberately on the new drive using the Basic Start-up assistant. A drive swap on a pump takes two to three hours including the test run.

ACS800 → ACS880: a bigger change, worth doing properly

The ACS880 is a far more capable drive than the ACS800 — direct torque control retained, but with a new firmware platform, an option-slot architecture (three slots for fieldbus, I/O, encoder and safety modules) and Safe Torque Off standard. Things that are different enough to plan for:

Item	ACS800	ACS880	Consequence
Fieldbus adapter	RPBA-01, RETA-01, RMBA-01 (Rxxx)	FPBA-01, FENA-21, FSCA-01 (Fxxx)	New adapter; PLC configuration changes (different GSD/EDS, parameter mapping)
Encoder interface	RTAC-01	FEN-01/FEN-31	New module; encoder cable usually reused
Control panel	CDP 312R	ACS-AP-I / ACS-AP-W	Not interchangeable; door-mount kit changes
Parameter structure	Groups 10–99 (ACS800 Standard)	Groups 10–99 (common drive platform)	Similar numbering, different content — do not assume
Safety	Prevention of unexpected start (AGPS)	STO standard, FSO-12/21 option for SS1, SLS	Safety circuit redesign; usually a simplification
Dimensions	Frames R2–R8	Different frame sizes for the same kW	Check cabinet space and cooling; ACS880 is often narrower and deeper
Software	DriveWindow, DriveAP	Drive Composer (Entry free, Pro licensed)	Adaptive programming replaced by Drive Composer Pro function blocks

The adaptive programs are where retrofits stall: ACS800 Adaptive Programming (DriveAP) blocks were often used for pressure control, sequencing or interlocks that nobody documented. Read them out with DriveWindow before the old drive is removed, because once it is dead the logic is gone. Rebuild them in Drive Composer Pro or, better, move the logic to the PLC.

Motor and cable considerations

A drive swap is the moment to check the motor. ACS800 systems often run motors from the 1990s with insulation not designed for modern IGBT switching; the ACS880's du/dt is similar, so if the motor survived the ACS800 it will survive the ACS880, but add a du/dt or sine filter if cable length exceeds the drive manual's limit (typically 100–150 m unfiltered). In the EU the swap also triggers the Ecodesign question — if the motor is replaced, it must meet IE3/IE4 depending on rating, and an IE5 synchronous reluctance motor with an ACS880 is often the cheapest lifetime option for pumps and fans.

Spares versus replacement — the decision table

• ACS550 under 30 kW on a non-critical pump or fan: replace at failure with ACS580 (stock a unit per ten installed), no reason to pre-emptively swap.
• ACS550 above 75 kW or ACS800 of any size on a critical process: replace proactively within the next shutdown window; spares for large frames (R6–R8 power modules, control boards RMIO-01) are expensive and increasingly from repair pools.
• ACS800 multidrive and cabinet-built systems (ACS800-07/-17/-37): engineering project; ABB offers retrofit kits that keep the cabinet and replace power modules with ACS880 modules. Involve ABB service or an experienced integrator.

What we supply

New ACS580 and ACS880 drives with fieldbus adapters and panels, tested ACS550/ACS800 units and spare boards (RMIO-01, OINT, SDCS boards for DCS drives) for the bridging period, and alternative drives (Danfoss VLT AQUA, Yaskawa GA700) where delivery or price favours a change of brand. Send the type code from the old drive's label and the parameter list if you have it; we return the replacement model, the adapter list and the mechanical adapter plate reference.

Quick answers

Is the ACS580 a direct replacement for the ACS550?

Functionally yes, physically no: dimensions, mounting pattern and terminal numbering differ, and parameters are re-entered from a cross-reference. Allow two to three hours per drive including commissioning.

Can I reuse my ACS800 PROFIBUS adapter on an ACS880?

No. ACS800 uses R-series adapters (RPBA-01); ACS880 uses F-series (FPBA-01). The PLC side also needs the new GSD file and parameter mapping.

Does ABB still repair ACS800 drives?

For many frames yes, under the Classic/Limited phase, through ABB service and authorised repair partners. Board-level spares are increasingly sourced from repair pools; lead times vary. We quote both repair and replacement.