Siemens 6SL3120-2TE21-8AD0 SINAMICS S120 D-Type Double Motor Module
The D-type 18 A/18 A two-axis module combines current-generation internal cooling with documented IP20 booksize mechanics.
Product Profile
Siemens 6SL3120-2TE21-8AD0 is an active D-type SINAMICS S120 Double Motor Module for two 18 A motor outputs. The module operates from the S120 DC link, supplies 400 V three-phase motor sides and uses internal air cooling. Its exact Siemens data sheet identifies 100 x 380 x 270 mm dimensions, IP20 / UL open-type protection, 0 to 40 °C operation and separate X1 and X2 motor connectors. These D-type mechanical values must not be copied into the older AA3 article.
Technical Data
| Manufacturer | Siemens |
|---|---|
| Article Number | 6SL3120-2TE21-8AD0 |
| Product Family | SINAMICS S120 |
| Product Type | D-type Double Motor Module |
| Construction | Booksize D type |
| Cooling | Internal air cooling |
| DC Link Voltage | 510 to 720 V DC |
| Motor Output | 400 V, 3-phase AC |
| Rated Output Current | 18 A / 18 A |
| Motor Connectors | X1 and X2 |
| Dimensions | 100 x 380 x 270 mm |
| Degree of Protection | IP20 / UL open type |
| Operating Temperature | 0 to 40 °C |
| Lifecycle | PM300 Active Product |
System Role
Drive-System Functions
- Supplies two motor axes from one D-type power section.
- Uses the 510 to 720 V DC link range documented in the exact data sheet.
- Provides separate X1 and X2 motor-side connectors.
- Employs an integrated fan for intensified internal air cooling.
- Supports optimized pulse patterns and extended Safety Integrated functions.
- Includes DRIVE-CLiQ connectivity for system recognition and diagnostics.
Exact Product Identity
- Manufacturer: Siemens
- Model: 6SL3120-2TE21-8AD0
- Product Type: SINAMICS S120 booksize D-type Double Motor Module
- Status: Active product
Compatibility
- Match the complete AD0 suffix and the documented D-type mechanics.
- Reserve the 100 x 380 x 270 mm mounting envelope and cooling-air requirement.
- Confirm conductor sizing, PE connection and the X1/X2 motor plugs.
- Verify Control Unit firmware, DRIVE-CLiQ topology and project data before commissioning.
- Do not assume direct interchangeability with AA3 or AC0 solely from the 18 A/18 A rating.
Applications
- Current-generation two-axis S120 booksize drive systems.
- Machine tools and coordinated motion equipment requiring two 18 A outputs.
- Cabinets designed around the D-type mounting and airflow requirements.
- Replacement projects where the AD0 suffix is already installed and documented.
- Engineered upgrades that include electrical, mechanical and safety validation.
FAQ
Which construction type belongs to 6SL3120-2TE21-8AD0?
Siemens identifies it as the booksize D-type Double Motor Module.
What exact mechanical envelope is documented for the AD0 module?
The data sheet gives 100 mm width, 380 mm height and 270 mm depth.
Which motor connectors are present on the D-type unit?
The two motor sides use connectors X1 and X2.
What is the official data-sheet net weight of 8AD0?
The exact Siemens data sheet lists 7.7 kg.
Why should 8AD0 dimensions not be reused on the AA3 page?
They belong to the D-type generation and are not evidence for the older AA3 hardware.
What environmental limit is stated for normal AD0 operation?
The exact data sheet specifies an operating ambient range of 0 to 40 °C.
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