6AU1425-2AD00-0AA0 - Motion control system - SIEMENS

SIMOTION D425-2 DP/PN 6AU1425-2AD00-0AA0, the brushless controller to reliably pace your axes

The SIEMENS SIMOTION D425-2 DP/PN brushless controller, reference 6AU1425-2AD00-0AA0, is a drive-based control unit dedicated to Motion Control applications where precision, repeatability and availability are paramount. Mounted close to inverters and brushless servomotors, it orchestrates synchronized motion profiles in real time, minimizes latency and simplifies engineering. Its broad industrial connectivity, integrated I/O and modular architecture make it a long-term solution for both new machines and retrofits. Designed for continuous production environments, it includes a dual battery module for backup and a fan module for thermal control, contributing to measurable operational continuity. This unit is aimed at machine builders, integrators and maintenance teams looking for a robust, open and rapidly deployable brushless controller.

Productivity, precision and integration at the heart of your brushless axes

• Reliable multi-axis synchronization – DRIVE-CLiQ interfaces provide a deterministic link to SIEMENS inverters and brushless servomotors for stable, consistent trajectories.
• Controlled reaction times – An internal frequency of 4 kHz helps stabilise motion loops, useful for high-speed cycles and smooth transitions.
• Proven field interoperability – 3 PROFINET ports and 2 PROFIBUS ports ease integration with distributed I/O, drives and PLCs while preserving existing topology.
• Operational availability – The dual battery module secures critical data and the fan module supports performance in industrial environments, reducing unplanned downtime.
• Engineering flexibility – 12 digital inputs, 16 digital I/Os and 1 option slot allow fine adaptation of the unit to machine specifics without complicating the cabinet.

Rigorous technical architecture and complete connectivity

The SIMOTION D425-2 DP/PN integrates 4 DRIVE-CLiQ interfaces for direct, reliable connection to compatible drives and encoders, which reduces cabling and standardises axis commissioning. On the communications side, 3 PROFINET ports and 2 PROFIBUS ports provide wide integration flexibility in new or existing architectures. Two Ethernet ports and two USB ports simplify diagnostics, maintenance and configuration. The onboard I/O, with 12 digital inputs and 16 digital inputs/outputs, handles essential machine signals without systematically adding external modules. Power is supplied at 24 V DC, range 20.4 to 28.8 V, with a power consumption of 24 W and a nominal current of 5 A, aligning with common cabinet standards and easing backup power design. The unit includes a dual battery module that helps preserve application state and a fan module that optimises performance under continuous operation. An expansion slot allows addition of targeted functionality, ensuring controlled scalability over the machine lifecycle.

Industrial applications and typical use cases

This brushless controller excels on machine tools, packaging lines, handling systems and processing equipment where demanding axis profiles and synchronization are critical. OEMs will find a homogeneous control base for modular machine ranges. Integrators will value compatibility with the SIEMENS ecosystem and common industrial networks, reducing commissioning risks. Maintenance teams will benefit from a standardised platform that supports quick replacement and reduced downtime.

Differentiation, robustness and reliability by SIEMENS

Located close to the drives, this drive-based controller minimizes bottlenecks related to distribution of motion tasks and helps maintain cycle rates. SIEMENS' system approach, focused on coherence between controller, drives and brushless servomotors, secures long-term performance. Standardised interfaces and abundant I/O simplify project standardisation while allowing targeted adaptations. The combination of dual battery and dedicated ventilation is a tangible asset for machine availability on stations running 3-shift operations.

Standard Exchange Industry supports you on this brushless controller 6AU1425-2AD00-0AA0 with three complementary services: standard exchange supply, new or reconditioned equipment, and workshop repair. Benefit from responsive logistics, typical delivery 24 to 72 h, dedicated bench testing and a 6 to 24 month warranty depending on the chosen service. Our technical teams validate compatibility and assist you until production is restored. Request your quote and secure your brushless axes without delaying your production commitments.