Siemens 6SL3120-1TE21-0AA3 SINAMICS S120 9 A Single Motor Module
A legacy 9 A Single Motor Module with an 18 A peak-current profile for established S120 booksize systems.
01Product Overview
Siemens 6SL3120-1TE21-0AA3 is the earlier 9 A booksize Single Motor Module for a single SINAMICS S120 axis. The documented AA3 family data assigns 7.7 A base-load current, 10 A S6 current and 18 A peak current to this rating. Current Siemens comparison information identifies the exact article as a spare part, so it should be serviced against the original machine archive and not against later AA4 performance data.
02Performance
Verified Performance
- Rated output current: 9 A.
- Base-load current: 7.7 A.
- S6 40 percent current: 10 A.
- Peak current: 18 A for the AA3 generation.
- Rated power: 4.8 kW at a 600 V DC link.
- Internal fan cooling with 29.6 m3/h airflow and less than 60 dB sound-pressure data.
Exact Product Identity
- Manufacturer: Siemens
- Model: 6SL3120-1TE21-0AA3
- Product Type: SINAMICS S120 9 A Single Motor Module, booksize
- Status: Siemens identifies the exact article as a spare part
03Technical Details
| Manufacturer | Siemens |
|---|---|
| Article Number | 6SL3120-1TE21-0AA3 |
| Product Type | SINAMICS S120 Single Motor Module |
| Construction | Booksize, internal air cooling |
| DC-Link Supply | 510 to 750 V DC |
| Electronics Supply | 24 V DC (20.4 to 28.8 V) |
| Rated Output Current | 9 A |
| Base-Load Current | 7.7 A |
| S6 Current (40%) | 10 A |
| Peak Current | 18 A |
| Rated Power | 4.8 kW |
| Rated Pulse Frequency | 4 kHz |
| DC-Link Capacitance | 110 uF |
| Power Loss | 80 W |
| Cooling Air Requirement | 29.6 m3/h |
| Commercial Position | Spare part |
04System Integration
- Confirm the AA3 hardware generation and the original 18 A peak-current design.
- Check total DC-link and 24 V busbar loading across the complete booksize axis group.
- Preserve the Control Unit firmware, DRIVE-CLiQ topology and motor-encoder assignment.
- Inspect the module fan and cabinet cooling path before a replacement is energized.
- Restore current-controller, pulse-frequency, protection and safety parameters from the verified project.
- Perform axis tuning, direction, brake, encoder and safety validation under controlled conditions.
05Applications
- Legacy 9 A S120 feed or spindle-support axes with documented AA3 hardware.
- Machine-tool axes where the original project requires the 18 A peak-current profile.
- Automation cells retaining an established DRIVE-CLiQ and 24 V busbar topology.
- Spare-part maintenance using a verified original drive archive.
- Repair programs where migration risk is higher than controlled same-generation service.
- Lifecycle assessments comparing the AA3 installation with later AA4 and D-type solutions.
06FAQ
What peak current belongs to this AA3 article?
The documented AA3 family value for the 9 A module is 18 A.
Why must the 27 A value be excluded?
The 27 A maximum appears in the later AA4 data sheet and is not the verified AA3 peak rating.
How much rated power is documented?
The family technical table gives 4.8 kW at a 600 V DC link and 4 kHz pulse frequency.
What is the base-load current?
The documented base-load current is 7.7 A.
How should a spare-part exchange be prepared?
Preserve the project, firmware, DRIVE-CLiQ topology, motor and encoder data, protection settings and safety acceptance record.
What cooling airflow applies?
The documented internal-fan airflow requirement is 29.6 m3/h.
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