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        Siemens 6SL3120-1TE21-8AD0
        Siemens 6SL3120-1TE21-8AD0
        Siemens 6SL3120-1TE21-8AD0
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        Siemens 6SL3120-1TE21-8AD0
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        6SL3120-1TE21-8AD0

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        1001 reviews ｜ Need a Specific Revision?
        The 6SL3120-1TE21-8AD0 is a Siemens SINAMICS S120 Double Motor Module with 18A rated output, 650Hz servo frequency, 50mm width, booksize format, and DC 510-720V input.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 6SL3120-1TE21-8AD0

        • Manufacturer:
          Siemens
        • Part Number:
          6SL3120-1TE21-8AD0
        • Product Family:
          Siemens SINAMICS
        • Product Type:
          Motor Module
        • DC Link Voltage Range:
          510...720 V DC
        • Electronics Power Supply:
          24V DC (-15% / +20%)
        • Electronics Current Demand (max):
          0.75 A
        • DC Link Capacitance:
          220 μF
        • S6 Duty (40%) Current (I56):
          24.0 A
        • Maximum Current (Imax):
          54.0 A
        • Rated Power (based on IN):
          9.7 kW
        • Rated Power (based on IH):
          8.2 kW
        • V/f Control Max Frequency:
          600 Hz
        • Power Loss (typ / max):
          0.14 kW / 0.19 kW
        • Sound Pressure Level (1m):
          Sound Pressure Level (1m)
        • Weight:
          4.45 kg
        • Estimated shipping dimensions:
          5x27x41.5cm
        • Tariff Code:
          8517795000
        • Country of origin:
          Germany
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Operating Environment Monitoring and Control

        Features:

        • Two independent motor modules in one housing; saves 50% of panel space compared to two single‑axis modules; ideal for multi‑axis machines.
        • 650Hz servo control (550Hz without license), 600Hz V/f, 300Hz vector; supports high‑speed spindles and servo applications.
        • Base load 15.3A, maximum current 54.0A (3.5× rated); S6 duty (40%) current 24.0A; handles temporary overloads during acceleration and heavy cutting.
        The 6SL3120-1TE21-8AD0 is a Double Motor Module, meaning it contains two independent inverters in a single 50mm wide housing. Each axis has its own output terminals and can control a separate motor. This dual‑axis design is a significant advantage for multi‑axis machines such as packaging lines (multiple servo axes for sealing, cutting, and feeding), textile machines (multiple spindles), or pick‑and‑place robots (two axes per module). Compared to using two single‑axis Motor Modules, which would require 100mm of width, the 6SL3120-1TE21-8AD0 saves 50mm of panel space per two axes.

        The 6SL3120-1TE21-8AD0 is designed for high‑speed motion control applications. In servo control mode, it can output frequencies up to 650Hz (with a high output frequency license; without the license, the limit is 550Hz). At a pulse frequency of 8kHz and a current controller cycle of 62.5μs, the maximum output frequency reaches 1300Hz at 60% of rated current. This high frequency capability is essential for applications such as high‑speed spindles (milling, grinding), centrifugal separators, and high‑speed packaging cutters. Traditional drive modules are often limited to 300-400Hz, which limits maximum motor speed. For example, a 4‑pole motor (synchronous speed of 1500rpm at 50Hz) running at 650Hz would achieve approximately 19,500rpm.

        The 6SL3120-1TE21-8AD0 is built to handle temporary overloads that occur during motor acceleration, heavy cutting, or shock loads. Its base load current (IH) is 15.3A, meaning it can operate at this current continuously at ambient temperatures up to 40°C. For short periods, it can deliver much higher current. The maximum current (Imax) is 54.0A – approximately 3.5 times the rated current (IN = 18.0A). This allows the module to provide high starting torque or to power through a heavy cut without tripping. For applications with a duty cycle (e.g., 40% overload for 60 seconds then 240 seconds at base load), the S6 duty current (I56) is 24.0A. The overload capability is defined by the cycle duration and the cooling system (the module has an integrated fan for intensified air cooling).

        The 6SL3120-1TE21-8AD0 Siemens Motor Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL)by the manufacturer (OEM).

        Siemens 6SL3120-1TE21-8AD0 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.All prices are shown in USD.
        Siemens 6SL3120-1TE21-8AD0 Motor Module Specs

        General

        • Manufacturer Siemens
        • Model 6SL3120-1TE21-8AD0
        • Condition New Original ready stock
        • Product Family 6SL3120-1TE21-0AD0,6SL3120-1TE13-0AD0,6SL3120-1TE15-0AD0
        Important Notice:Other accessories,manuals,cables,calibration data,software,etc.are not included with this equipment unless listed in the above stock item description.All prices are shown in USD.
        • CNC Machine Tools: Used to control the feed axes (X/Y/Z axes) of machine tools, providing precise positioning and cutting control.
        • Packaging and Printing Equipment: Enables precise synchronization control, electronic gearing, and cross-cutting applications in high-speed packaging lines.
        • Robotic Arms and Automation Units: Provides high-efficiency drives for various joints in industrial robots.
        • Cooling Method: Internal Air Cooling. Air is drawn in from the bottom and exhausted from the top, therefore, adequate vertical ventilation is essential during installation.
        • Vibration/Shock Resistance: Meets industrial standards, but vibration damping measures are recommended for environments with severe vibration.
        • Protection Rating: IP20 (Must be installed inside a control cabinet).
        • DRIVE-CLiQ: Equipped with 3 DRIVE-CLiQ interfaces for high-speed serial communication with the CU320-2 control unit and encoder, enabling real-time automatic topology identification.
        • External Control: Typically receives commands from a host computer (such as SIMATIC S7-1500) via PROFIBUS or PROFINET.
        • Status Monitoring (LEDs): The panel features two multi-color LEDs (Ready and DC Link) for quick diagnostics of module status, DC bus voltage, and communication operation.
        Description
        The 6SL3120-1TE21-8AD0 is a Double Motor Module for SINAMICS S120 drive systems. It operates from a DC link voltage of 510-720V and requires 24V DC electronics power. The module has a rated output current of 18.0A (base load 15.3A) and a maximum current of 54.0A. It is designed for servo control with output frequency up to 650Hz (limited to 550Hz without high output frequency license). 

        When using the 6SL3120-1TE21-8AD0, engineers can drive two motors from a single module. The rated power is 9.7kW based on IN (18.0A) or 8.2kW based on IH (15.3A). For S6 duty (40% duty cycle), the output current is 24.0A. The rated pulse frequency is 4.00kHz. The DC link capacitance is 220μF. 

        The 6SL3120-1TE21-8AD0 has a DC link busbar current capacity of 200A and a 24V busbar capacity of 20A. The electronics power supply demand is 0.75A maximum. The sound pressure level at 1 meter is 60.0dB. 

        For SINAMICS S120 system expansions, the 6SL3120-1TE21-8AD0 provides a compact dual‑axis motor module. It is designed for use with an upstream Active Line Module or Basic Line Module. The module is ideal for applications requiring two axes of motion control in a single 50mm wide package, such as packaging machines, textile machines, and machine tools. 
        Alternative Names
        6SL312O-1TE21-8ADO 6SL3120-1TE13-0AD0 SL3120-1TE15-0AD0
        Technical notes
        The 6SL3120-1TE21-8AD0 has a maximum output frequency of 650Hz for servo control. However, without a high output frequency license, the output frequency is limited to 550Hz. For applications requiring speeds above 550Hz, the license must be purchased and activated.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        How many axes does 6SL3120-1TE21-8AD0 control?
        The 6SL3120-1TE21-8AD0 is a Double Motor Module that controls two independent motors from a single 50mm wide housing. This saves significant panel space compared to two separate single‑axis modules, ideal for packaging and textile machines.
        What is the maximum output frequency of 6SL3120-1TE21-8AD0?
        For servo control, the maximum output frequency is 650Hz (limited to 550Hz without a high output frequency license). V/f control supports 600Hz, vector control 300Hz. This supports high‑speed applications like spindles and centrifugal machines.
        What is the overload capability of 6SL3120-1TE21-8AD0?
        The module has a base load current of 15.3A and a maximum current of 54.0A (approximately 3.5× rated current). For S6 duty (40% duty cycle), the current is 24.0A. This allows temporary overloads during acceleration or hard cutting operations.

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