ABB ZMU-02 Memory Unit for ACS880 Drive

The ABB ZMU-02 Memory Unit for ACS880 Drive is the removable memory unit for ABB drive control units — compatible with the ZCU-12, ZCU-14, BCU-02, BCU-12 and BCU-22 control units. It stores drive parameters, firmware and application programs, and is required for the drive's application-programming function (IEC 61131-3) with its associated software license.
Key Features

1. Removable memory unit for ABB drive control units (ZCU-12 / ZCU-14 / BCU-02 / BCU-12 / BCU-22)
2. Stores drive parameters, firmware and application programs
3. Required for drive application programming (IEC 61131-3, per ABB) with software license
4. Delivered empty — software is loaded separately ("Software not included" per ABB)
5. Licensing enforced: a program loaded without a license key triggers fault 64A5 "Licensing fault"
6. Not recommended for ACS880 spare-part use — use ZMU-03 (3AXD50000223107) for ACS880

1. Type Designation: ZMU-02
2. Order Code: 3AXD50000006010
3. Product Type: Memory unit kit
4. Catalog Description: ZMU-02; MEMORY UNIT KIT (ABB)
5. Compatible Control Units: ZCU-12, ZCU-14, BCU-02, BCU-12, BCU-22
6. Function: Parameter / firmware / application-program storage
7. Software: Not included (empty unit; load software + license)
8. License Requirement: Application-programming license (e.g. N8010) for IEC 61131-3 programming
9. Net Weight: 0.34 kg

1. De-energize the drive before inserting or removing the ZMU-02 memory unit.
2. Insert the unit into the memory-unit slot of the control unit (ZCU / BCU); ensure correct orientation and full seating.
3. Load the required software and license key per the drive firmware manual — a missing license triggers fault 64A5 (Licensing fault).
4. Back up drive parameters before replacement; restore after fitting the new unit.
5. For ACS880 applications, order the ZMU-03 (3AXD50000223107) instead — the ZMU-02 is not recommended as an ACS880 spare part (per ABB).

1. What does the ZMU-02 do? It is the removable memory unit for ABB drive control units (ZCU-12/14, BCU-02/12/22), storing drive parameters, firmware and application programs.
2. Which drives use it? It is used with the listed ABB control units. ABB explicitly states it is not recommended for ACS880 spare-part use — ACS880 requires the ZMU-03 (3AXD50000223107).
3. Does it come with software? No — ABB lists it as an empty memory unit ("Software not included"); software and license must be loaded separately.
4. What happens without a license key? The drive indicates fault 64A5 "Licensing fault" when a program is loaded to the ZMU-02 without the license key.

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