Multi-axis servo drive
Siemens SINAMICS S120
Modular high-performance drive system covering single-axis and multi-axis machines, running servo or vector control for synchronous and induction motors via DRIVE-CLiQ.
Key specifications
| Power | 550–5,700,000 W |
|---|---|
| Supply | 1/3 AC 200-240 V; 3 AC 380-480 V; 3 AC 500-690 V; 47-63 Hz |
| Fieldbus | PROFINET, PROFIBUS DP, Modbus TCP, CANopen, EtherNet/IP (option card), DRIVE-CLiQ (system interface) |
| Axes | single-axis (Blocksize, Chassis AC/AC) and multi-axis (Booksize, Booksize Compact, Chassis, Cabinet Modules) |
| Safety | integrated functions incl. STO, SBC, SS1, SS2 - SIL 2 / PL d |
Summarised in our own words from Siemens AG's published data; series maxima, individual models vary. Last checked 2026-10-29. Source 1 · Source 2 · Source 3
Notes on this data
Power/format figures from 2017 US brochure (DRBR-S120X-0117) - may be dated; current product page publishes no figures. Siemens launched SINAMICS S220 (Oct 2025, 'building on the success of S120', CU320-3, up to 12 axes per control unit) - not described as an S120 replacement; S120 remains current. Current ratings not published in sources checked.
Specify Motion is not affiliated with Siemens AG. Siemens and SINAMICS S120 are used only to identify the product. Comparisons use published figures; always confirm against the current datasheet.
Alternatives that meet or exceed these figures
Engineers often come to us with a Siemens part number and leave with an alternative that is easier to source, quicker to deliver or a better fit for the machine. These series from our supply network is the closest match on published figures.
A dual-axis low-voltage Kinco drive for AGV differential-drive wheels, with RS + CANopen or RS + pulse variants and built-in brake output.
View series →Figures are the highest published for each series and are not always measured the same way. A higher figure is not automatically a better choice: mounting, duty cycle, feedback, connectors and approvals matter too. An engineer will check the fit against your application before recommending anything.
Other multi-axis servo drive series
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