Siemens 6SL3126-1TE21-0AA4 SINAMICS S120 Single Motor Module
An active AA4 SINAMICS S120 power module for one axis, with a mid-range current class and cold-plate thermal coupling.
Key Information
6SL3126-1TE21-0AA4 is a Single Motor Module for one controlled drive axis in the modular S120 system. Its AA4 hardware, cold-plate construction and exact current class define a specific procurement item. It connects into the coordinated drive topology through DRIVE-CLiQ and supports the safety architecture of the complete machine.
Functions
- Provides one regulated motor-power channel in a common S120 DC-link line-up.
- Applies the optimized pulse pattern assigned to this product generation.
- Communicates identification, topology and operating diagnostics through DRIVE-CLiQ.
- Supports Extended Safety Integrated functions at the engineered system level.
- Uses the equipment cold plate as the primary power-stage heat-removal path.
Specifications
| Manufacturer | Siemens |
|---|---|
| Order Number | 6SL3126-1TE21-0AA4 |
| Product Family | SINAMICS S120 |
| Module Type | Single Motor Module |
| DC-Link Input | 600 V DC |
| Motor Output | 400 V, 3 AC |
| Rated Output Current | 9 A |
| Construction | Booksize |
| Cooling Method | Cold-plate cooling |
| System Interface | DRIVE-CLiQ cable included |
| Safety Capability | Extended Safety Integrated functions supported |
| Product Lifecycle | PM300 Active Product |
Installation
- Verify the machined heat-transfer surface and mounting pressure specified for the cold-plate design.
- Assemble the module in the documented booksize DC-link sequence with correct protective earthing.
- Route motor and signal wiring to preserve separation and cabinet service access.
- Confirm the exact AA4 topology entry, firmware compatibility and safety configuration before download.
- Perform low-risk commissioning checks before applying the machine load.
Lifecycle
- Siemens lists the full order number as an Active Product.
- Preserve the complete suffix in the spare-parts record to avoid selecting a different hardware generation.
- Save project, motor, encoder and safety data before removing the installed module.
- Include cold-plate condition and mounting materials in preventive-maintenance inspections.
- Document all post-replacement tests for future lifecycle work.


