Lenze E94AYM22 MM220 Memory Module – Servo Drives 9400
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Product Information
The Lenze E94AYM22 MM220 memory module is a dedicated plug-in storage component designed for the Lenze Servo Drives 9400 family, including StateLine, HighLine, and Single Drive servo inverters. Operating as the central data repository for the drive, this module utilizes non-volatile Flash ROM technology to store full application project code, parameter sets, drive setup parameters, and safety configurations. Built with a proprietary slot edge connector, the MM220 retains all stored information permanently without requiring battery backup power, making it a critical hardware module across automated production lines in automotive, packaging, textile, and robotics applications.
Connection and commissioning of a replacement module center on the card's proprietary edge connector, which seats directly into the dedicated memory slot of the host drive. The E94AYM22 features a specialized flash memory sector reserved exclusively for safety parameter configurations and checksums utilized by functional safety equipment like the Lenze SM301 Safety Module. In the event of a drive unit failure, maintenance personnel can transfer the existing MM220 module directly into an identical replacement inverter. Upon powering up, the drive imports the saved parameters and safety settings automatically without requiring a field laptop, cable, or software transfer. ABC Industrial Parts can assist maintenance teams seeking tested replacement units or spare components to minimize downtime during a swap.
Diagnostic assessment for the E94AYM22 is conducted using the drive's Keypad XT display interface or through the internal drive diagnostic buffer using Lenze Engineer software. Operating conditions and hardware state are monitored continuously, with internal system alarms flagging errors such as missing hardware, corrupted data checksums, read/write faults, or firmware mismatches. Basic troubleshooting should confirm that the module is fully seated into the slot edge connector and that contact pins are clean and free of damage or contamination. If parameter corruptions recur or memory write failures persist due to hardware degradation, internal flash wear is not field-serviceable, and sourcing a replacement module through ABC Industrial Parts is the standard path to restore machine operation.
Technical Specifications
| Manufacturer | Lenze |
| Part Number | E94AYM22 |
| Model / Type | MM220 |
| Product Family | Servo Drives 9400 |
| Component Type | Memory Module |
| Memory Type | Flash ROM / Non-volatile memory |
| Storage Function | Application project, parameter sets, drive settings, and safety configurations |
| Interface Type | Proprietary slot edge connector |
| Lifecycle Status | Phase-out |
Programming and Configuration
The Lenze E94AYM22 MM220 memory module integrates fully with Lenze Engineer software to manage parameter backup, project transfer, and diagnostic verification routines. Because the module relies on non-volatile Flash ROM technology, all application projects, parameters, and drive settings remain intact without relying on an internal battery.
In addition to standard motion parameters, the MM220 contains a dedicated flash storage area designed specifically for safety parameters. This section holds checksums and setup data required by functional safety hardware, such as the Lenze SM301 Safety Module. Engineering teams can perform complete parameter extraction or backup restores via Lenze Engineer software to re-commission modified drives or verify safety checksums.
Diagnostics and Status Indication
System state and diagnostic monitoring for the Lenze E94AYM22 are executed through host drive interfaces. Maintenance personnel can view operational messages via the drive keypad (Keypad XT) status display or by accessing the diagnostic buffer within Lenze Engineer software.
When memory errors or improper module connections occur, the drive logs specific hex error codes that identify whether the fault stems from missing hardware, corrupted checksum data, unreadable memory sectors, write access failures, or parameter incompatibility with the installed drive firmware.
Replacement and Spare Part Considerations
When performing a drive exchange in production lines using Lenze 9400 StateLine, HighLine, or Single Drive inverters, the E94AYM22 MM220 allows rapid plug-and-play restoration. By swapping the existing memory module into an equivalent replacement drive, technicians transfer all parameter settings and safety configurations without needing a PC connection.
Before applying power following a module swap, ensure that the replacement inverter matches the original drive model and power rating. If parameter settings on the memory module do not align with the drive hardware or firmware version, fault code 0x00500005 will occur, requiring parameter alignment or re-commissioning using Lenze Engineer software.
Error Codes & Fault Codes
The following error codes may be displayed during operation or diagnostics:
| Code | Name | Description | Possible Cause | Recommended Action |
|---|---|---|---|---|
| 0x00500001 | Memory module missing | The servo drive cannot detect an inserted memory module. | Memory module is not fully inserted into the slot, or contact pins are contaminated or damaged. | Power off the drive, re-seat the MM220 memory module, and restart. If error persists, replace MM220. |
| 0x00500002 | Memory module data invalid | Data structure or checksum on the memory module is corrupt or unreadable. | Power failure during write access, module corruption, or incomplete parameter transfer. | Download valid project data to the memory module using Lenze Engineer software. If flashing fails, replace memory module. |
| 0x00500003 | Memory module read error | Hardware failure during read operation from memory module. | Internal memory hardware failure or poor socket contact. | Re-seat module. If error recurs, memory module hardware is defective and must be replaced. |
| 0x00500004 | Memory module write error | Hardware failure during flash write/store operation. | Flash memory chip worn out or hardware error on memory module board. | Replace MM220 memory module. |
| 0x00500005 | Incompatible memory module data | Parameter data on memory module does not match the drive type or firmware version. | Memory module was transferred from a different drive model or incompatible firmware version. | Verify drive model and firmware compatibility, or re-commission using Lenze Engineer. |
Frequently Asked Questions
What is the primary function of the Lenze E94AYM22 MM220 memory module?
The Lenze E94AYM22 (MM220) is a non-volatile flash memory module that stores complete parameter sets, application projects, drive settings, and integrated safety configurations for Lenze 9400 series servo drives.
Does the MM220 memory module require a backup battery?
No, the MM220 uses non-volatile Flash ROM technology that retains all parameters, project data, and safety parameters indefinitely without requiring battery power.
Which drives and modules are compatible with the E94AYM22?
The E94AYM22 MM220 is compatible with Lenze 9400 StateLine Servo Drives, 9400 HighLine Servo Drives, 9400 Single Drive Servo Inverters, the Lenze SM301 Safety Module, and Lenze Engineer software.
How does the MM220 module handle functional safety configurations?
The MM220 contains a dedicated flash memory area reserved specifically for functional safety parameters and checksums required by safety hardware such as the Lenze SM301 Safety Module.
What should be done if fault code 0x00500001 is triggered?
Fault code 0x00500001 indicates that the drive cannot detect the memory module. Power down the unit, check and clean the contact pins, firmly re-seat the MM220 in its slot, and power up again. If the issue remains, replace the MM220 module.
Can a failed Lenze 9400 drive be replaced without a PC?
Yes, transferring the existing E94AYM22 MM220 module to a replacement drive of the same model, power rating, and compatible firmware automatically imports all application and safety parameters upon startup without software tools.
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Data backup and recovery
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Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
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