Siemens 6SL3244-0SA01-1AA0 is the ICU24F fail-safe control unit listed in the official ET 200S FC operating instructions. It controls compatible IPM25 power modules, exchanges data over the ET 200S backplane and processes safety-group signals for drive safety functions.
The -1AA0 suffix identifies a specific order revision and must not be replaced solely by matching the ICU24F family name. Procurement checks should cover the terminal module, parameter data, safety wiring, power module, software and the validated application.
| Complete part number | 6SL3244-0SA01-1AA0 |
| Manufacturer | Siemens AG |
| Product family | SINAMICS / ET 200S FC |
| Product designation | Fail-safe ICU24F control unit |
| Official documentation | Siemens ET 200S FC operating instructions, issue 10/2006 |
| Lifecycle wording | Not confirmed for this complete model |
| Exact manual designation | Frequency converter control unit ICU24F |
| System platform | ET 200S FC modular frequency converter |
| Terminal module | 3RK1903-3EA10 for ICU24 / ICU24F |
| Parameter length | 8 bytes in the ET 200S configuration |
| Safety functions | STOP 0, STOP 1 and safely reduced speed |
| Compatible power modules | IPM25 0.75 kW, 2.2 kW and 4.0 kW |
| Interfaces | PM-IF, backplane bus, MMC-PS, RS232, PTC/KTY84, speed encoder and ICU24F safe buses |
| Dimensions / weight | 15 × 220 × 156 mm with terminal module; approximately 250 g |
| Ambient / protection | −10 to +60 °C horizontal; −10 to +40 °C vertical; IP20 |
| Safety data in official manual | Maximum SIL 2 per IEC 61508 and Category 3 per EN 954-1 |
No exact Siemens lifecycle wording was confirmed for 6SL3244-0SA01-1AA0 in the accessible official records. The complete model is identified in Siemens operating instructions, but document age alone does not prove Discontinued or Obsolete status. Request current lifecycle and successor information from Siemens using the exact suffix.
It is an ICU24F fail-safe control unit for the modular ET 200S FC frequency-converter system.
The official operating instructions list terminal module 3RK1903-3EA10 for ICU24 and ICU24F control units.
The ET 200S configuration table assigns eight bytes of parameter data to ICU24F.
They are different complete order numbers; hardware, safety software and replacement approval must be checked independently.
Record the full suffix, parameter backup, IPM25 rating, safety-group wiring, interfaces and commissioning requirements.
Send the full 6SL3244-0SA01-1AA0 order number, installed power module and safety configuration for review.
Legacy drive review centered on exact revision, parameter backup, safety wiring and ET 200S FC compatibility.
We review the installed ET 200S FC layout, ICU24F parameters, safety groups and power module.
We verify the -1AA0 suffix, terminal-module pairing and visible device identification.
We protect legacy drive electronics and confirm international delivery arrangements.
Share the exact model, application data and destination for availability and compatibility review.
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