Siemens 6SE7090-0XX85-1DA0 Control Module
The CUR closed-loop and open-loop control module for infeed and infeed/regenerative feedback units; associated software is ordered separately.
Product Profile
6SE7090-0XX85-1DA0 is the Siemens CUR control module for SIMOVERT MASTERDRIVES infeed units and infeed/regenerative feedback units. It provides the closed-loop and open-loop control electronics for the matched legacy converter unit.
Siemens states that the associated software must be ordered separately as 6SW1701-0DA14 at T434E. Historical Siemens engineering information applies the CUR to rectifier and rectifier/regenerative units rated at 774 A or above.
Technical Data
| Manufacturer | Siemens |
|---|---|
| Order Number | 6SE7090-0XX85-1DA0 |
| Published Product Description | Replacement CUR control module for infeed and infeed/regenerative feedback units |
| Product Family | SIMOVERT MASTERDRIVES |
| Control Function | Closed-loop and open-loop control |
| Historical Application Range | Rectifier and rectifier/regenerative units rated at 774 A or above |
| Associated Software | 6SW1701-0DA14 at T434E; ordered separately |
| Hardware Reference Family | CUR electronics based on C98043-A1680 |
| Lifecycle Status | Discontinued for series production; limited spare availability in the Siemens product record |
| Selection Evidence | Host unit MLFB, CUR hardware suffix and software or EPROM identity |
| Configuration Evidence | Parameters, terminal assignments, interfaces and option-board list |
| Acceptance | Diagnostics, communication, I/O, precharge and controlled power-flow testing |
System Role
Runs closed-loop and open-loop control for the matched MASTERDRIVES infeed or regenerative unit.
Provides CUR terminal and communication interfaces documented for the legacy converter system.
Depends on separately identified software rather than a board-only identity.
Maintains compatibility through host MLFB, hardware revision and software records.
Compatibility
- Confirm the complete infeed or infeed/regenerative unit MLFB and rated current.
- Record the CUR label including the C98043 hardware suffix and all option modules.
- Match the installed software or EPROM to the required 6SW1701-0DA14 execution.
- Preserve terminal assignments, communication settings and the approved parameter set.
Applications
- Service replacement in a documented SIMOVERT MASTERDRIVES infeed unit.
- Repair of a regenerative feedback unit carrying the matching CUR hardware and software.
- Legacy spares programs that retain complete converter and firmware records.
FAQ
Why is software ordered separately for 6SE7090-0XX85-1DA0?
Siemens explicitly identifies the CUR hardware as a spare and calls for the associated 6SW1701-0DA14 software at T434E.
What host information is required for 6SE7090-0XX85-1DA0?
Provide the complete infeed-unit MLFB, rated current, serial number, CUR hardware suffix, software label and option-board list.
Can C98043-A1680-L1 alone replace 6SE7090-0XX85-1DA0?
The C98043 code identifies the CUR hardware family, but service approval still requires the full hardware revision, software and matched host unit.
What should be backed up before changing 6SE7090-0XX85-1DA0?
Retain parameters, terminal assignments, communication settings, option configuration, faults and the installed EPROM or software identity.
How should 6SE7090-0XX85-1DA0 be commissioned?
Verify isolation and precharge circuits first, then check diagnostics, interfaces, permissives and controlled infeed or regenerative operation.
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