6SN1123-1AB00-0BA1 is a Siemens SIMODRIVE 611 two axes power module identified by revision BA1. It represents 25 A module class with 9 A feed-axis and 8 A main-spindle rated motor-current data.

The power module operates inside a modular SIMODRIVE 611 system with the compatible line-supply/infeed, control module, motor, feedback and cooling arrangement selected for the machine.

• Provides the power stage for two axes in a modular SIMODRIVE 611 drive group.
• Keeps the BA1 article revision explicit to separate 6SN1123-1AB00-0BA1 from visually similar power modules.
• Carries the documented 25 A module designation and 9 A / 8 A motor-current ratings.
• Uses the connected control module for regulation, motor feedback processing and machine-axis coordination.
• Integrates with the compatible infeed, DC link, motor cabling and cabinet cooling arrangement.

• Service replacement in a legacy SIMODRIVE 611 two axes drive position.
• Machine-tool feed or spindle axes matched to the documented motor-current class.
• Modular multi-axis drive cabinets using a common SIMODRIVE 611 line supply and DC link.
• Maintenance programs that preserve the original control, feedback and motor interfaces.
• Retrofit assessments where the installed parameters and mechanical cooling arrangement must be retained.

• Retain the full 6SN1123-1AB00-0BA1 article number; the final revision characters are part of the hardware definition.
• Record motor nameplate data, control-module article, feedback type, parameter backup and axis assignment.
• Verify that the replacement supports the documented 25 A module class and two axes arrangement.
• Check DC-link isolation and discharge under the machine safety procedure before module removal.
• After installation, restore validated parameters and complete axis, feedback, current-limit and protective-function tests.