Siemens 6SL3120-2TE21-0AD0 SINAMICS S120 9 A D-Type Double Motor Module
Two 9 A motor channels with 27 A peak capability support compact high-dynamic S120 motion systems.
Product Profile
Siemens 6SL3120-2TE21-0AD0 is the active 9 A D-type Double Motor Module in the SINAMICS S120 booksize range. It provides two 9 A motor outputs, 2 x 7.7 A base-load current and a threefold 2 x 27 A maximum-current value. The 50 mm unit is supplied from a 510 to 720 V DC link and integrates internal air cooling, optimized pulse patterns, extended Safety Integrated functions and DRIVE-CLiQ. Its 9 A channel rating must not be confused with the similarly coded 2TE21-8AA0 18 A legacy module.
Technical Data
| Manufacturer | Siemens |
|---|---|
| Article Number | 6SL3120-2TE21-0AD0 |
| Product Family | SINAMICS S120 |
| Construction | Booksize D-type, internal air cooling |
| DC Link / Electronics Supply | 510 to 720 V DC / 24 V DC |
| Rated / Base-Load Current | 2 x 9.0 A / 2 x 7.7 A |
| S6 / Maximum Current | 2 x 12.0 A / 2 x 27.0 A |
| Type Rating at Rated / Base Load | 2 x 4.8 kW / 2 x 4.1 kW |
| Rated DC-Link Current | 22.0 A |
| Rated Pulse Frequency | 4 kHz |
| DC-Link Capacitance | 220 µF |
| Cooling-Air Requirement | 0.009 m³/s |
| Motor Cable Length | 50 m shielded; 75 m unshielded |
| Lifecycle | Active product |
System Role
Power-Section Functions
- Controls two 9 A axes in one 50 mm booksize power module.
- Provides 2 x 27 A peak current for high-dynamic acceleration demand.
- Supports 2 x 12 A during the documented S6 duty cycle.
- Carries 220 µF of DC-link capacitance and draws 22 A rated DC-link current.
- Supports extended Safety Integrated functions and DRIVE-CLiQ integration.
- Uses internal forced-air cooling with a documented 0.009 m³/s airflow requirement.
Exact Product Identity
- Manufacturer: Siemens
- Model: 6SL3120-2TE21-0AD0
- Product Type: SINAMICS S120 booksize D-type Double Motor Module
- Status: Active product
Compatibility
- The 2TE21-0AD0 is a 9 A/9 A module; the 2TE21-8AA0 is an 18 A/18 A legacy article.
- Keep the 0AD0 suffix together with its 2 x 27 A maximum-current profile.
- Verify the 22 A rated DC-link contribution in external-connection calculations.
- Confirm motor cables, connectors, firmware, DRIVE-CLiQ topology and encoder data.
- Maintain 0.009 m³/s airflow and the 0 to 40 °C non-derated operating range.
- Repeat all safety and motor-channel tests after replacing an older module.
Applications
- Two-axis servo groups requiring 9 A continuous current per channel.
- Motion axes that demand up to 27 A peak current during acceleration.
- Compact drive cabinets where two motor channels must occupy 50 mm width.
- S120 modernization using the official AD0 connector-adaptation guidance.
- Safety-related machine axes after complete power-section acceptance testing.
FAQ
Why must 2TE21-0AD0 not be confused with 2TE21-8AA0?
The 0AD0 is rated 2 x 9 A, while the 8AA0 is a legacy 2 x 18 A module.
What is the maximum current per channel?
The D-type 9 A module provides 27 A maximum current on each channel.
Which base-load current applies?
Siemens specifies 2 x 7.7 A.
How much DC-link current must be included in system design?
The rated DC-link current is 22.0 A.
What cabinet width is required?
The module is 50 mm wide.
Which active S220 comparison article is identified by Siemens?
Siemens comparison guidance maps the 9 A S120 D-type position to 6SL5120-2UE21-0AD0, subject to full system checks.
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