Siemens 6FC5210-0DF31-2AA0 SINUMERIK PCU 50.3-C Industrial PC Control Unit
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Product Information
The Siemens 6FC5210-0DF31-2AA0 is a SINUMERIK PCU 50.3-C CM370 industrial PC control unit engineered to drive operator panel fronts in high-precision CNC machine tools. Powered by an Intel Celeron M CM370 processor running at 1.5 GHz and equipped with 512 MB SDRAM, this unit provides reliable processing capacity for human-machine interface visualization and operator control in automated machining cells. Housed in a compact IP20 enclosure measuring 10.51 x 11.69 x 3.22 inches and weighing 13.23 lb, it operates on a standard 24 V DC supply with a maximum power consumption of 190 W.
For system connectivity and peripheral integration, the control unit includes USB Type-A interfaces designed to connect external keyboards, card readers, and storage media. The PCU 50.3-C comes with factory pre-installed Windows XP Professional for Embedded Systems and provides non-volatile hard disk storage for NC and PLC project files and system parameters. It is fully compatible with Siemens SINUMERIK 840D, 840Di, and 810D CNC systems, as well as KB 310C and KB 483C CNC keyboards. Bringing a replacement unit into service requires restoring the machine-specific NC and PLC project data, configuring system parameters, and aligning runtime settings, a task where ABC Industrial Parts can assist through tested replacement hardware and configuration guidance.
Operational stability in machining environments is enhanced by an integrated 20 ms mains buffering function that safeguards internal operations against brief power fluctuations and transient voltage drops. When troubleshooting a non-responsive panel, initial checks should focus on verifying the 24 V DC input voltage, power wiring, USB peripheral connections, and ambient operating conditions within the specified range of 5 to 45 °C. Because internal board-level faults or processor hardware failures cannot be serviced in the field, installing a fully tested replacement control unit from ABC Industrial Parts offers a dependable path to restoring machine functionality.
Technical Specifications
| Manufacturer | Siemens |
| Part Number | 6FC5210-0DF31-2AA0 |
| Model / Type | SINUMERIK PCU 50.3-C CM370 |
| Component Type | Industrial PC Control Unit |
| Product Family | SINUMERIK |
| Processor | Intel Celeron M CM370 1.5 GHz |
| System Memory (RAM) | 512 MB SDRAM |
| Operating System | Windows XP Professional for Embedded Systems |
| Supply Voltage | 24 V DC |
| Max Power Consumption | 190 W |
| Mains Buffering Time | 20 ms |
| Interface Types | USB Type-A |
| Degree of Protection | IP20 |
| Dimensions (H x W x D) | 10.51 x 11.69 x 3.22 in |
| Weight | 13.23 lb |
| Operating Temperature | 5 to 45 °C |
Programming and Configuration
The Siemens 6FC5210-0DF31-2AA0 operates on Windows XP Professional for Embedded Systems, which is pre-installed at the factory to support operator visualization, system diagnostics, and file management across CNC machining environments. System execution relies on 512 MB of dedicated SDRAM, enabling smooth execution of HMI projects and background routines.
Machine-specific non-volatile parameter backups, NC project files, and PLC data are stored on the unit's internal hard drive. Commissioning a spare module requires transferring the backup files from the original unit or loading saved project data to match the operating environment of the target CNC system.
Communication and System Integration
Integrated into the SINUMERIK automation structure, the PCU 50.3-C communicates directly with CNC operator panel fronts and CNC systems, including SINUMERIK 840D, 840Di, and 810D control setups. It supports dedicated operator input hardware such as KB 310C and KB 483C CNC keyboards.
External device connectivity is facilitated via built-in USB Type-A interfaces. These ports allow technicians to attach external storage drives, memory card readers, and keyboards for configuration backup, system software maintenance, and parameter transfers.
Replacement and Spare Part Considerations
When selecting a replacement for part number 6FC5210-0DF31-2AA0, verify that the existing system utilizes the 24 V DC power specification and matches the physical dimensions of 10.51 x 11.69 x 3.22 inches within the operator enclosure. Power distribution circuits must support up to 190 W maximum draw with appropriate 24 V DC filtering.
Because a replacement unit contains standard system factory images, it will not operate the machine tool immediately upon installation. Successful replacement requires transferring the existing non-volatile parameter backup and restoring the specific NC/PLC project data to ensure full compatibility with the CNC controller.
Frequently Asked Questions
What operating system comes pre-installed on the 6FC5210-0DF31-2AA0?
The control unit features factory pre-installed Windows XP Professional for Embedded Systems.
Which CNC systems are compatible with the Siemens PCU 50.3-C?
The unit is compatible with Siemens SINUMERIK 840D, SINUMERIK 840Di, and SINUMERIK 810D CNC systems, as well as KB 310C and KB 483C keyboards.
What are the processor and memory specifications of this unit?
It is equipped with an Intel Celeron M CM370 processor running at 1.5 GHz and 512 MB of SDRAM.
What power supply requirements must be met for installation?
The unit requires a 24 V DC power supply input, supports a maximum power consumption of 190 W, and provides a 20 ms mains buffering time.
Is the 6FC5210-0DF31-2AA0 a direct plug-and-play unit when replacing a failed module?
No, while the operating system is pre-installed, a replacement module requires restoring the machine's specific NC and PLC project data and parameter backups from non-volatile storage before it can drive the machine tool.
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Data backup and recovery
Have you lost valuable parameters or data due to a malfunction while the manufacturer no longer provides support? At ABC Industrial Parts, we help you secure this data, both for common and specific products.
Specific firmware and hardware versions
If you are working with specific hardware or firmware versions that are no longer available from the manufacturer, ABC Industrial Parts is your partner. When making your enquiry, clearly state which versions you need, we will then look at the possibilities of supplying those versions, so that your installations continue to function optimally.
Disclaimer:
We are not an authorised distributor of Siemens.
Product photos are for illustration purposes only and may differ from the actual product delivered.
Some of the content on this page was created with the help of AI. While we strive to provide accurate and up-to-date information, errors may occur.