Motor Module for SINAMICS S120 Drives
The Siemens 6SL3120-1TE21-0AA3 is a SINAMICS S120 Single Motor Module designated as a spare part. It takes a 600 V DC input and delivers a 400 V 3-phase AC output rated at 9 A, sized for a motor load within that current envelope. Built in the booksize format with internal air cooling, it fits into the standard S120 booksize cabinet lineup. The module supports optimized pulse patterns and extended Safety Integrated functions, and it includes the DRIVE-CLiQ cable for communication back to the Control Unit.
The 600 V DC input rail is the standard SINAMICS S120 DC-link voltage — the module expects a regulated DC bus from the Line Module, not a direct rectified line. The 400 V 3 AC output at 9 A is the motor-side rating; that 9 A figure governs the maximum continuous motor current, so the connected induction or synchronous motor should have a nameplate full-load current at or below that value. Booksize construction with internal air cooling means the module dissipates heat into the cabinet ambient — it does not require a separate heatsink or liquid cooling loop, but the cabinet must have adequate forced ventilation to keep the internal air temperature within the S120 derating curve. The DRIVE-CLiQ interface is the standard S120 motor-module bus; it carries the encoder signals and the Safety Integrated communication back to the Control Unit.