VFD vs Servo Drive: Key Differences
A side-by-side comparison of VFD and servo drive motor type, feedback, dynamic response, overload rating, cost, and applications for industrial engineers.
- Part number
- 6SL3120-1TE21-8AD0
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· From Türkiye
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SINAMICS S120Siemens 6SL3120-1TE21-8AD0 SINAMICS S120 Single Motor Module 18A 9.7kW D-Type Drive Module
Siemens SINAMICS S120 Single Motor Module, 18A rated, 9.7kW, DC 600V in, 3AC 400V out
Description
About the 6SL3120-1TE21-8AD0
About the 6SL3120-1TE21-8AD0
The Siemens SINAMICS S120 Single Motor Module (6SL3120-1TE21-8AD0) is a D-type booksize power module that converts a 510...720 V DC link into a 400 V 3 AC output rated for 18.0 A (IH 15.3 A, Imax 54.0 A), delivering 9.7 kW based on rated current. It includes a DRIVE-CLiQ cable and supports the extended Safety Integrated functions at a 4.00 kHz pulse frequency.
Selection Notes
At 18.0 A rated / 54.0 A peak, this sits in the middle of this D-type Single Motor Module range - it shares the same 510-720 V DC link window as the lower- and higher-current versions but adds headroom for motors whose base load current exceeds roughly 9 A. The 220 µF DC-link capacitance and 100 A busbar rating are matched to this current class; check the busbar's total current budget before combining it with a higher-power line module or additional motor modules on the same DC link.
Applications
Drives a single servo or induction motor axis from a SINAMICS S120 DC link in machine tools, packaging, and material-handling equipment, using the extended Safety Integrated functions built into this module for integrated safe torque off and safe motion.
Specification
Full specification
Rated data 13
| DC link voltage | DC 510 ... 720 V |
|---|---|
| Electronics power supply | DC 24 V -15 % / +20 % |
| Current demand, max. | 0.75 A |
| DC-link current Id | 22.0 A |
| Output current: Rated value IN | 18.0 A |
| Output current: Base load current IH | 15.3 A |
| Output current: For S6 duty (40%) IS6 | 24.0 A |
| Output current: Imax | 54.0 A |
| Type rating: Based on IN | 9.7 kW |
| Type rating: Based on IH | 8.2 kW |
| Current carrying capacity: DC link busbars | 100 A |
| Current carrying capacity: 24 V busbars | 20 A |
| DC link capacitance | 220 µF |
Ambient conditions 4
| Installation altitude (without derating) | 1,000 m (3,281 ft) |
|---|---|
| Cooling 8) | Internal air cooling |
| Cooling air requirement | 0.009 m³/s |
| Ambient temperature: During operation | 0 ... 40 °C (32 ... 104 °F) |
Connections 4
| Motor end: Version | connector (X1) |
|---|---|
| PE connection | M5 screw |
| Max. motor cable length: Shielded | 70 m (230 ft) |
| Max. motor cable length: Unshielded | 100 m (328 ft) |
Show all 41 specifications ↓ Show less ↑20 more values in Identification, Standards, Mechanical data, General tech. specifications, Logistics.
Identification 6
| Part number | 6SL3120-1TE21-8AD0 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| EAN | 4034106439620 |
Standards 2
| Compliance with standards | CE, cULus |
|---|---|
| Safety Integrated | SIL 2 acc. to IEC 61508, PL d acc. to EN ISO 13849-1, Category 3 acc. to EN ISO |
Mechanical data 6
| Line side: Width | 50.00 mm (1.97 in) |
|---|---|
| Line side: Height | 380.00 mm (14.96 in) |
| Line side: Depth | 270.00 mm (10.63 in) |
| Line side: Degree of protection | IP20 / UL open type |
| Line side: Type of construction | Booksize |
| Line side: Net weight | 4.6 kg (10.14 lb) |
General tech. specifications 2
| Sound pressure level (1m) | 60.0 dB |
|---|---|
| Page 1 of 1 | Generated Sun Nov 1 04:03:07 CET 2026 |
Logistics 4
| Shipping weight | 5.1 kg |
|---|---|
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | Low stock |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
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Quick answers
Questions about the 6SL3120-1TE21-8AD0
What is the rated current of 6SL3120-1TE21-8AD0?
The rated current of 6SL3120-1TE21-8AD0 is 18.0 A.
Which supply voltage is 6SL3120-1TE21-8AD0 rated for?
The rated operational voltage of 6SL3120-1TE21-8AD0 is 400 V AC.
What motor power is 6SL3120-1TE21-8AD0 rated for?
The rated motor power of 6SL3120-1TE21-8AD0 is 9.7 kW.
What is the HS code of 6SL3120-1TE21-8AD0 for customs?
The tariff (HS) code on file for 6SL3120-1TE21-8AD0 is 85044087.
What is the EAN of 6SL3120-1TE21-8AD0?
The EAN (GTIN) of 6SL3120-1TE21-8AD0 is 4034106439620.
Where does 6SL3120-1TE21-8AD0 ship from, and how fast?
6SL3120-1TE21-8AD0 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Guides
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Series
Siemens SINAMICS S120
- Brand
- Siemens
- Series
- SINAMICS S120
