The Siemens 6SL3121-1TE13-0AA3 is a SINAMICS S120 Single Motor Module in the booksize form factor, designed as a spare part for existing S120 drive systems. It takes a 600 V DC input and delivers a 400 V 3AC output rated at 3 A, with external air cooling.
The 3 A output at 400 V 3AC sizes this module for small servo or induction motors — think a 1.5 kW spindle or a compact axis on a pick-and-place line. The 600 V DC input means it's fed from a common DC bus or a Smart Line Module, not directly from the AC mains. The booksize construction with external air cooling slots into a standard S120 cabinet, and the included DRIVE-CLiQ cable connects it to the Control Unit for cyclic real-time data.
Deployment Context
This module is a drop-in spare for an existing S120 booksize drive system — the external air cooling and booksize footprint mean it mounts in a multi-axis cabinet with forced ventilation, not a standalone enclosure. The extended Safety Integrated functions (STO, SS1, SBC) are supported via the DRIVE-CLiQ interface, so it integrates into a safety-rated motion chain without an external safety relay.