Siemens C98043-A7100-L4 Advanced CUD Board
The 32 MB Advanced Control Unit board used in SINAMICS DCM converters and cross-referenced to spare order 6RY1803-0AA05-0AA1.
Key Information
C98043-A7100-L4 is the board label for the SINAMICS DCM Advanced Control Unit (CUD). Siemens cross-references it to the uncoated spare-part order 6RY1803-0AA05-0AA1 and describes the assembly as Advanced control electronics with terminals and 32 MB memory.
This L4 hardware generation supports all SINAMICS DCM firmware versions listed in the current operating instructions. The exact converter, slot assignment, connector board and installed options still have to be matched before exchange.
Functions
- Executes the advanced control, regulation and diagnostic functions of a SINAMICS DCM converter.
- Provides the CUD platform for parameter storage, terminal functions and optional communication integration.
- Can be used in either the left or right CUD slot under the documented system rules.
- Supports Advanced CUD option configurations such as communication and memory-card expansion.
Specifications
| Manufacturer | Siemens |
|---|---|
| Model | C98043-A7100-L4 |
| Product Family | SINAMICS DCM |
| Product Role | Advanced Control Unit (CUD) |
| Memory | 32 MB |
| Matching Spare Order | 6RY1803-0AA05-0AA1 |
| Board Execution | Uncoated Advanced CUD |
| Firmware Compatibility | L4 hardware group is listed for all SINAMICS DCM firmware versions |
| Slot Use | Article is not slot-specific; documented left/right option rules apply |
| Retrofit Requirement | A compatible connector board is required when retrofitting a CUD |
| Optional Communication | CBE20 support depends on the Advanced CUD option arrangement |
| Lifecycle of Matching Spare | PM300 active product; orderable through spare-parts service |
Installation
- Archive converter parameters, firmware, option settings and fault history before removal.
- Record whether the board is fitted in the left or right CUD position and photograph the connector board.
- Apply converter isolation, discharge and ESD controls before handling the CUD.
- After replacement, restore only the approved project and validate terminals, communication, field/armature control and diagnostics.
Lifecycle
- Keep the C98043 board label and matching 6RY order number together in the asset record.
- Document connector-board and CBE20/memory-card options for future support.
- Use Siemens firmware compatibility guidance before loading a different converter software version.
FAQ
Why do C98043-A7100-L4 and 6RY1803-0AA05-0AA1 appear on the same spare?
C98043-A7100-L4 is the control-board identity, while 6RY1803-0AA05-0AA1 is the Siemens spare-part order number for that Advanced CUD execution.
Can C98043-A7100-L4 be installed in the right CUD slot?
The board is not slot-specific, but a right-side Advanced CUD is an option configuration and must follow the required left-side Advanced CUD and connector-board arrangement.
What should be checked before loading firmware onto C98043-A7100-L4?
Confirm the board hardware label, converter project, installed options and release notes, then keep a recoverable parameter and firmware backup.
Which retrofit part can be missed when adding C98043-A7100-L4?
A suitable connector board is required for a CUD retrofit, so the quote must distinguish a replacement board from a first-time expansion.
What commissioning records should remain after changing C98043-A7100-L4?
Retain the restored project, firmware, slot assignment, option-card inventory, terminal tests, communication tests and controlled converter results.
