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The Original ABB ZMU-02 Memory Unit Spare 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
- Removable memory unit for ABB drive control units (ZCU-12 / ZCU-14 / BCU-02 / BCU-12 / BCU-22)
- Stores drive parameters, firmware and application programs
- Required for drive application programming (IEC 61131-3, per ABB) with software license
- Delivered empty — software is loaded separately (“Software not included” per ABB)
- Licensing enforced: a program loaded without a license key triggers fault 64A5 “Licensing fault”
- Not recommended for ACS880 spare-part use — use ZMU-03 (3AXD50000223107) for ACS880
Technical Specifications
- Type Designation: ZMU-02
- Order Code: 3AXD50000006010
- Product Type: Memory unit kit
- Catalog Description: ZMU-02; MEMORY UNIT KIT (ABB)
- Compatible Control Units: ZCU-12, ZCU-14, BCU-02, BCU-12, BCU-22
- Function: Parameter / firmware / application-program storage
- Software: Not included (empty unit; load software + license)
- License Requirement: Application-programming license (e.g. N8010) for IEC 61131-3 programming
- Net Weight: 0.34 kg
Installation Notes
- De-energize the drive before inserting or removing the ZMU-02 memory unit.
- Insert the unit into the memory-unit slot of the control unit (ZCU / BCU); ensure correct orientation and full seating.
- Load the required software and license key per the drive firmware manual — a missing license triggers fault 64A5 (Licensing fault).
- Back up drive parameters before replacement; restore after fitting the new unit.
- For ACS880 applications, order the ZMU-03 (3AXD50000223107) instead — the ZMU-02 is not recommended as an ACS880 spare part (per ABB).
Common Questions
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.
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).
Does it come with software? No — ABB lists it as an empty memory unit (“Software not included”); software and license must be loaded separately.
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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