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Single Motor Module
booksize internal air cooling
optimized pulse patterns, support of the
extended Safety Integrated functions, incl. DRIVE-CLiQ cable
The 6SL3120-1TE21-8AA3 SINAMICS S120 Single Motor Module. Booksize format, internal air cooling, optimized pulse patterns, support of the extended Safety Integrated functions, incl. DRIVE-CLiQ cable. Features standard interfaces: 3 DRIVE-CLiQ sockets, 1 safe standstill input, 1 safe motor brake control, 1 temperature sensor input (KTY84-130 or PTC), and 2 PE connections.
2 DC link connections via integrated DC link busbars
1 electronics power supply connection via integrated 24 V DC busbars
1 motor connection, plug-in (not included in scope of supply) or screw-stud depending on rated output current
6SL3120-1TE21-8AA3 is equipped with a complete set of connection terminals on its surface. The top features an assembleable DC busbar interface used for electrical interconnection with the upstream line module and other inverter modules mounted side-by-side. The bottom is provided with U2, V2, and W2 motor power cable connection terminals. In terms of communication, the module integrates 3 dedicated Drive-CLiQ (RJ45) interfaces, which are responsible for high-speed digital network connection of motor encoder data and module status to the upper-level CU320-2 or SIMOTION control units.
In addition, it is equipped with dedicated hardware safety integrated wiring terminals to connect to the control circuits for Safe Torque Off (STO) and Safe Stop 1 (SS1). This module is applicable for three-phase motors with a rated power of 9.7 kW, featuring an 18A rated output current and a DC 510-720V input, and is configured with Drive-CLiQ interfaces as well as STO/SS1 safety functions.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Siemens 6SL3120-1TE21-8AA3 Single Motor Module Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Machine Tool Manufacturing
Used in CNC milling machines, lathes, and machining centers to control high-precision positioning and high-speed cutting of spindles and feed axes.
Automotive Manufacturing
Employed in driving industrial robot joints on body-in-white welding lines, as well as conveyor and positioning systems on powertrain assembly lines.
Lithium Battery Manufacturing
Applied in electrode coating, rolling, and winding machines, providing extremely high tension control and synchronous following accuracy.
Printing and Papermaking Industry
Utilized in multi-color printing and slitting machines for millisecond-level color registration control and constant-tension unwinding/rewinding during high-speed operation.
Electronics and Semiconductor Manufacturing
Applied in manipulators such as die bonders, dispensers, and PCB drilling machines to control XY linear or servo motors for micron-level positioning.
Steel and Metallurgical Industry
Employed in tension levellers, flying shears on cold/hot rolling lines, and withdrawal-straightening drives of continuous casters to maintain stable sheet metal tension.
When using the 6SL3120-1TE21-8AA3, special attention must be paid to safety. The DC link retains a 600V residual high voltage after power-off, so always wait at least 5 minutes and verify safety with a multimeter before any maintenance.
The module must be mounted vertically inside an IP20 rated control cabinet, ensuring the bottom fan and ventilation paths are completely unobstructed to prevent overheating.
During commissioning, ensure proper connection to the Control Unit via DRIVE-CLiQ, and never plug or unplug communication cables while powered. As this model is currently in its phase-out/spare-parts stage, it is highly recommended to plan for the -8AA4 upgrade for future retrofits.
Siemens 6SL3120-1TE21-8AA3 is a high-performance, Booksize format Single Motor Module within the SINAMICS S120 drive family. Powered by a 600V DC common bus, it delivers a rated output current of 18A (approx. 9.7 kW) with a high overload capability of 150% to 200%. Utilizing the DRIVE-CLiQ digital interface, it establishes a closed-loop linkage with a Control Unit (e.g., CU320-2) and a servo motor, making it widely applied in CNC machine tools, robotics, and automated production lines.
It is a Single Motor Module from the Siemens SINAMICS S120 series with a Booksize format, primarily used to control a single servo motor or induction motor.
What does Booksize mean for 6SL3120-1TE21-8AA3?
It refers to its narrow physical design resembling a book, which allows for compact side-by-side mounting inside the control cabinet to maximize space savings.
How does 6SL3120-1TE21-8AA3 work?
It does not connect directly to AC power. It takes 600V DC from a Line Module in the system and uses its internal inverter circuit to convert it into adjustable AC voltage and frequency, enabling precise speed and torque control of the motor.
Can 6SL3120-1TE21-8AA3 operate independently?
No. It is part of a modular system and must work in combination with a Control Unit (such as CU320-2), a Line Module (Power Supply), and a motor.
What is the DRIVE-CLiQ interface included with 6SL3120-1TE21-8AA3?
It is Siemens' proprietary, high-performance digital communication interface. Via DRIVE-CLiQ cables, the motor modules, control units, and encoders can achieve automatic recognition and high-speed transmission of diagnostic and control data.
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