Siemens 6SN1118-0BJ11-0AA0 Simodrive W28 Servo Drive

Siemens SIMODRIVE 611 servo-drive pair comprised of the 6SN1118-0BJ11-0AA0 control unit and the 6SN1123-1AA00-0CA0 power module provides a complete, resolver-based single-axis drive for older SIMODRIVE 611 installations. The 6SN1118-0BJ11-0AA0 is a resolver-control unit with an analog 1-axis setpoint interface, handling the drive’s control signals and feedback for precise axis operation. The matching 6SN1123-1AA00-0CA0 power module delivers 50 A to the axis with internal cooling, and its data sheet lists motor-rated currents such as 1FT5 = 25 A, 1FT6 = 18 A, 1PH = 24 A, and 24 A for induction motors, aligning with typical single-axis servo and spindle applications. Together, these modules form a compact, analog, 1-axis servo drive designed to work within the SIMODRIVE 611 ecosystem, supporting resolver-based control and straightforward integration for motion tasks requiring reliable position and speed control. Common use cases include single-axis servo positioning in legacy automation or CNC contexts where resolver feedback and a dedicated analog setpoint interface are preferred, with the power module’s 50 A rating suitable for moderate-load motors. These parts are documented components of the SIMODRIVE 611 family and appear in Siemens catalogs and third-party refurbish listings as compatible elements of a 1-axis drive solution.