Siemens 6SN1123-1AA00-0BA1 Programmable Logic Controller Module

Siemens 6SN1123-1AA00-0BA1 SIMODRIVE 611 Power Module is the single-axis power stage used with the SIMODRIVE 611 servo drive system. This power module supplies the high-current output for one servo axis and pairs with the drive's control electronics to convert incoming power into the regulated motor drive signals required by servo motors in industrial automation. The 6SN1123-1AA00-0BA1 variant is specified for a 1-axis power module and is rated at 25 A, enabling the torque and speed characteristics typical of mid-range servo applications. As the power portion of the SIMODRIVE 611 family, it handles the motor current while the interface and feedback functions live in the corresponding drive components; the overall system has since seen newer Siemens drive generations, with SIMODRIVE being largely superseded by modern SINAMICS solutions. Some Siemens lifecycle references indicate that this exact MLFB has been declared obsolete by Siemens in its product notices, which affects availability and may guide customers toward current replacement options. This part is commonly used in repair or retrofit projects to maintain legacy SIMODRIVE 611 installations, and buyers should confirm axis compatibility and motor ratings with their servo motor and the rest of the drive stack before ordering.