Use the module only in the documented SINAMICS S120 booksize station with the matched DC link, Control Unit, motors, cooling and DRIVE-CLiQ topology.
Important Notice: Confirm 6SL3120-2TE21-8AC0, the complete Siemens drive type, hardware revision, double motor module, booksize c position, connectors and terminals, DC-link isolation, cooling, protective grounding, firmware, parameter set and controlled interlock and functional-test results before commissioning.
Apter Power 6SL3120-2TE21-8AC0 Manuals and Guides
The first document is the model-specific technical and system reference. The second is a distinct field workbook for installation, wiring, commissioning and acceptance records.