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2-year Warranty

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Siemens 6FC5348-0AA02-0AA0


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2 Year warranty

Part Number6FC5348-0AA02-0AA0
Model #6FC53480AA020AA0
Warranty2 Year
UnitDouble fan/battery module
DestinationNCU 7x0 or D445-1/D4x5-2 incl. battery duty

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 6FC5348-0AA02-0AA0 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 6FC5348-0AA02-0AA0 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 6FC5348-0AA02-0AA0, 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 6FC5348-0AA02-0AA0 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 6FC5348-0AA02-0AA0 Overview

Siemens 6FC53480AA020AA0

The 6FC53480AA020AA0 is a specific model of the Siemens Sinumerik 840D sl CNC system, which is a highly advanced and versatile control system designed for precision machining applications. It is widely used in various industries such as aerospace, automotive, and manufacturing. These 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 Accessories from other manufacturers such as FANUC and Yaskawa.


6FC53480AA020AA0 is a SINUMERIK/SIMOTION double fan/battery module for NCU 7x0 or D445-1/D4x5-2, which includes a battery duty to supply information. As per the REACH regulation's Article 33, the product contains a substance from the candidate list in concentrations exceeding 0.1% by weight. Specifically, the substance is 1,2-dimethoxyethane, also known as ethylene glycol dimethyl ether (EGDME), with the CAS number 110-71-4.

The 6FC53480AA020AA0 is integrated into the Sinumerik 840D sl system which serves as the brain of the control system, responsible for executing complex motion control algorithms, processing user programs, and managing various input and output devices.

The CPU module features powerful computing capabilities, enabling high-speed and high-precision control of machine tools. It is equipped with a robust processor and ample memory, allowing for the execution of demanding tasks and efficient processing of large programs.

The system is designed to provide exceptional performance and reliability. It is built to withstand harsh industrial environments, featuring rugged construction and protection against dust, vibration, and temperature fluctuations. This ensures consistent and uninterrupted operation even in challenging conditions.

Advanced Features

The Sinumerik 840D sl system, including the 6FC53480AA020AA0 CPU module, offers a wide range of advanced features and functionalities that enhance machining processes. It supports multi-axis control, allowing for simultaneous control of multiple axes with high precision and synchronization. This enables complex machining operations such as simultaneous milling, turning, and drilling.

The system provides extensive programming capabilities, supporting various programming languages such as ISO programming, G-code, and high-level programming languages. This allows users to create complex machining programs and customize them to their specific requirements. The programming environment is user-friendly and intuitive, facilitating efficient program creation and modification.

The 6FC53480AA020AA0 CPU module incorporates advanced motion control algorithms, ensuring the smooth and precise movement of machine axes. It offers high-speed interpolation and dynamic trajectory control, enabling fast and accurate positioning of machine tools. This results in superior surface finish, dimensional accuracy, and overall machining quality.


The Sinumerik 840D sl system, with the 6FC53480AA020AA0 CPU module, provides seamless integration with various peripheral devices and systems. It supports a wide range of input and output interfaces, allowing connection to sensors, actuators, drives, and other automation components. This enables efficient communication and synchronization between different machine components.

The system offers comprehensive diagnostic and monitoring capabilities, providing real-time feedback on machine status and performance. It facilitates efficient troubleshooting and preventive maintenance, minimizing downtime and optimizing machine utilization.

In terms of operator interface, the Sinumerik 840D sl system offers a user-friendly graphical interface that allows operators to interact with the machine tool easily. It features a high-resolution display and intuitive navigation, enabling efficient program execution, monitoring, and adjustment of machining parameters.

FAQ: Siemens 6FC5348-0AA02-0AA0 Accessories

Q: What is the Siemens 6FC5348-0AA02-0AA0?

A: The Siemens 6FC5348-0AA02-0AA0 is an accessory unit designed for use with SINUMERIK or SIMOTION systems, specifically for the NCU (Numerical Control Unit) series.

Q: What is the function of the 6FC5348-0AA02-0AA0 accessory unit?

A: The 6FC5348-0AA02-0AA0 unit serves as a double fan/battery module, providing essential cooling and backup power functionality for compatible NCU 7x0 or D445-1/D4x5-2 units, including battery duty.

Q: What systems is the 6FC5348-0AA02-0AA0 compatible with?

A: The 6FC5348-0AA02-0AA0 accessory unit is compatible with SINUMERIK and SIMOTION systems, specifically designed for integration with NCU 7x0 or D445-1/D4x5-2 units.

Q: What is the purpose of the double fan feature in the 6FC5348-0AA02-0AA0 unit?

A: The double fan configuration in the 6FC5348-0AA02-0AA0 unit helps ensure efficient cooling of the NCU or D4x5 unit, preventing overheating and maintaining optimal operating conditions for reliable performance.

Q: How does the battery module function in the 6FC5348-0AA02-0AA0 unit?

A: The battery module within the 6FC5348-0AA02-0AA0 unit serves as a backup power source, providing uninterrupted operation and data retention in the event of a power outage or disruption.

Q: Can the 6FC5348-0AA02-0AA0 unit be used with other Siemens control units?

A: The 6FC5348-0AA02-0AA0 unit is specifically designed for use with NCU 7x0 or D445-1/D4x5-2 units and may not be compatible with other Siemens control units. It is essential to verify compatibility before installation.

Q: What is the significance of including battery duty in the 6FC5348-0AA02-0AA0 unit?

A: By including battery duty, the 6FC5348-0AA02-0AA0 unit ensures that critical functions remain operational even during power disruptions, safeguarding data integrity and system reliability in industrial environments.

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 6FC5348-0AA02-0AA0, take a look at more from our Accessories 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 6FC5348-0AA02-0AA0 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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