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Siemens 6SN1118-0DM21-0AA0

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Part Number6SN1118-0DM21-0AA0
TypeAC Drives
Model #6SN11180DM210AA0
Warranty2 Year
Category611-D series
DescriptionClosed-Loop Control
Axis2 axes
Performance Plug in
ApplicationMotion control
OperationDirect measuring system

Our Repair Services

MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.

Repair Benefits

MRO can restore your failed 6SN1118-0DM21-0AA0 to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.

Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2-year warranty.

Our technicians have vast experience with most manufacturers and models. In addition to this 6SN1118-0DM21-0AA0 we also repair a wide range of other Siemens products, so if you don’t see the model you need, please contact us.

Core Exchange

If you are interested in getting credit for your faulty 6SN1118-0DM21-0AA0, just let us know, and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.

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Ask about exchanging your faulty 6SN1118-0DM21-0AA0 for credit when ordering from MRO Electric

MRO Electric provides a 2-year warranty on every item we sell and repair. We stand behind all of our products and guarantee them for the full 2 years. If there is an issue with any of our products within the warranty period, we will evaluate the unit and repair or replace it under warranty.

Siemens 6SN1118-0DM21-0AA0 Overview

Siemens 6SN1118-0DM21-0AA0

The Siemens 6SN1118-0DM21-0AA0 is a sophisticated and integral component of Siemens' SIMODRIVE 611-D series, specifically designed as a Closed-Loop Control Plug-In Unit for two axes. This versatile control unit plays a pivotal role in precision motion control applications, providing advanced features and capabilities for demanding industrial scenarios.

Key Features:

Closed-Loop Control for Two Axes:

The 6SN1118-0DM21-0AA0 is designed to manage closed-loop control for two axes simultaneously. This capability is essential in applications where synchronized and precise motion control of multiple axes is required, such as CNC machining, robotics, and complex manufacturing processes.

Standard Closed-Loop Control 2:

The unit employs the Standard Closed-Loop Control 2 configuration, showcasing Siemens' commitment to delivering standardized and efficient control solutions. This configuration ensures stable and reliable closed-loop control performance, meeting the high standards expected in industrial automation.

Direct Measuring System Absence:

This specific model operates without a direct measuring system (W/O), meaning it does not require direct feedback from an encoder or resolver. While some applications benefit from direct measuring systems for enhanced accuracy, the absence of this requirement simplifies the setup for applications where it is not crucial.

Maximum 2 Axes FDD or 1 Axis MSD:

The unit supports a maximum configuration of two axes using Feed Drive Direct (FDD) or one axis using Motor Spindle Drive (MSD). This flexibility allows for adaptability to different machine configurations and types, offering versatility in industrial applications.

Application Scenarios:

The Siemens 6SN1118-0DM21-0AA0 finds its application in a diverse range of industries where precision control of motion is paramount. Its two-axis closed-loop control is particularly advantageous in scenarios requiring synchronized movements, such as in CNC milling machines, lathes, and multi-axis robotic systems. The absence of a direct measuring system simplifies the integration process, making it suitable for applications where a more straightforward setup is preferred.

Integration and Compatibility:

As part of the SIMODRIVE 611-D series, the 6SN1118-0DM21-0AA0 is designed for seamless integration into Siemens drive systems. It adheres to Siemens' high standards of compatibility and interoperability, ensuring that it can be easily integrated into existing automation setups.

Reliability and Efficiency:

Siemens is known for its commitment to delivering reliable and efficient automation solutions, and the SIMODRIVE 611-D series, including the 6SN1118-0DM21-0AA0, is no exception. The closed-loop control capabilities, coupled with the absence of a direct measuring system, contribute to the overall reliability and efficiency of the unit in various industrial environments.

Frequently Asked Questions (FAQ) About Siemens 6SN1118-0DM21-0AA0 SIMODRIVE 611-D Closed-Loop Control Plug-In Unit

Q1: What does "Closed-Loop Control" mean in the context of the 6SN1118-0DM21-0AA0?

A1: Closed-loop control refers to the system's ability to continuously monitor and adjust the output based on feedback. In the case of the 6SN1118-0DM21-0AA0, it is designed to precisely control the motion of two axes simultaneously in real time.

Q2: How many axes does the 6SN1118-0DM21-0AA0 support?

A2: The 6SN1118-0DM21-0AA0 is specifically designed for closed-loop control of two axes simultaneously. This makes it suitable for applications requiring synchronized motion control.

Q3: What is the significance of the "Standard Closed-Loop Control 2" configuration?

A3: The "Standard Closed-Loop Control 2" configuration ensures a standardized and stable closed-loop control performance. It reflects Siemens' commitment to delivering reliable and efficient control solutions for industrial automation.

Q4: Why is the absence of a direct measuring system mentioned, and how does it impact applications?

A4: The unit operates without a direct measuring system, simplifying the setup for applications where direct feedback is not critical. This can make integration and configuration more straightforward, depending on the requirements of the specific application.

Q5: Can the 6SN1118-0DM21-0AA0 be used in applications with different drive configurations?

A5: Yes, the unit supports a maximum configuration of two axes using Feed Drive Direct (FDD) or one axis using Motor Spindle Drive (MSD). This flexibility allows it to adapt to various machine configurations and types.

Q6: In which industries or applications is the 6SN1118-0DM21-0AA0 commonly used?

A6: The 6SN1118-0DM21-0AA0 is suitable for a diverse range of industries, including CNC machining, robotics, and applications requiring synchronized and precise motion control of multiple axes.

Q7: How does Siemens ensure the compatibility and integration of the SIMODRIVE 611-D series, including the 6SN1118-0DM21-0AA0, into existing automation setups?

A7: Siemens adheres to high standards of compatibility and interoperability in its automation solutions. The SIMODRIVE 611-D series is designed for seamless integration into Siemens drive systems, ensuring compatibility with existing setups and facilitating efficient integration processes.

Siemens products are manufactured in Germany and are designed for Automotive, aerospace, power generation, and electronics usage. They come with a 2-year warranty from MRO Electric. We also carry AC Drives from other manufacturers such as FANUC and Yaskawa.

Contact Us Today For More Information About Siemens Products

Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 6SN1118-0DM21-0AA0, take a look at more from our AC Drives line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 6SN1118-0DM21-0AA0 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.

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