This motor utilizes advanced direct drive technology, eliminating the need for a traditional reducer. This innovative approach overcomes common drawbacks such as high cost, noise, inefficiency, and bulky designs often associated with conventional drive solutions. All-in-One Robot Joint Designed with an integrated development concept, the DDSM315 is a highly reliable Permanent Magnet Synchronous Motor (PMSM). It seamlessly integrates an outer rotor brushless motor, encoder, and servo driver into a single, compact unit. Key Features Ultra-low noise operation High precision with zero-backlash Fast response for direct drive without delay Integrated motor and driver for compact structure and high integration Supports RS485 bus communication for centralized control Ability to obtain motor feedback information (position, speed, current, error code) via communication Equipped with Hall position detection and over-current protection Supports electric brake functionality No drive mechanical friction, achieving drive efficiency close to 99.99% Technical Specifications No-load speed 315±10RPM Operating temperature -20℃ ~ 45℃ No-load current ≤0.25A Total weight 349±5g Rated speed 200RPM Encoder resolution 12bit Rated torque 0.55Nm Rated current 0.5A Locked-rotor torque 1.1Nm Noise level ≤50dB Torque constant 0.37Nm/A Rated voltage 18V DC (5S LiPo) Locked-rotor current ≤3.5A Speed constant 17.5RPM/V Note: The above parameters were measured at the rated voltage of 18V DC. Multiple Operating Modes The DDSM315 supports various operating modes including current loop mode, position loop mode, and velocity loop mode, offering flexibility for diverse applications. RS485 Bus Communication Support Achieve centralized control of multiple direct-drive servo motors with just a single RS485 bus channel, simplifying complex robotic systems. Closed-loop Control & Multiple Feedback Gain comprehensive insights into motor performance. You can obtain real-time feedback information such as temperature, position, velocity, and current through communication. Temperature Feedback Position Feedback Speed Feedback Current Feedback Integrated Direct Drive Design, No Reducer The integrated direct drive motor design enables the motor to deliver smooth torque, steady speed, and accurate position without an external reducer. This results in a compact structure and high integration, enhancing overall system efficiency. Wide Speed Range Adjustable The DDSM315 boasts a no-load speed of up to 315±10RPM and can operate at a rated speed of 200RPM with a rated torque of 0.55Nm. This makes it suitable for robotic projects demanding high-speed operation combined with reliable load-handling capabilities. Waterproof & Dustproof for Longer Service Life With an IP54 protection rating, the DDSM315 is designed to resist dust and water jets. This ingress protection ensures enhanced durability, a longer lifespan, and consistent performance in various environments. Supports Suspension Installation This motor supports installation with our UGV suspension, specifically designed for hub motors. It can be mounted via aluminum profile or by cutting holes on the side of the chassis, simplifying chassis design and integration. For reference only, the UGV Suspension (A) and robot chassis are not included; please purchase separately. The open-source drawing of the robot chassis is provided in the wiki. Pin Definition Application Scenarios The DDSM315 Direct Drive Servo Motor is versatile and ideal for a wide range of applications, including home robots, industrial/commercial robots, and robot chassis. Industrial Robots Commercial Robots UGV Robot Chassis Home Robots Dimensions
