Yaskawa SGMGH-09DCA6F-OY Sigma-II Servo Motor

The Yaskawa SGMGH-09DCA6F-OY is a high-performance AC servo motor from the Sigma-II Series, delivering 850 watts of rated output power for demanding motion control applications. The high inertia design of the SGMGH series provides exceptional torque output and system stiffness, making this motor particularly suitable for applications requiring smooth operation at moderate speeds with high load-to-motor inertia ratios. Operating at 400 VAC three-phase power, the SGMGH-09DCA6F-OY delivers precise positioning and velocity control when paired with compatible Sigma-II series servo drivers such as the SGDH series.

Key Features and Benefits

• High Inertia Design: The SGMGH series is distinguished by its high inertia rotor, providing enhanced rotational stability and making the motor well-suited for applications with high load-to-motor inertia ratios. The high inertia design delivers exceptional torque output and system stiffness, reducing mechanical resonance and improving settling time for precision positioning applications.

• 850W Output Power at 400 VAC: The 850W power rating at 400 VAC three-phase supply provides robust torque production for moderate to heavy-duty motion applications. The 1500 RPM rated speed with 5.39 Nm rated torque offers a favorable power-to-speed characteristic for applications not requiring high rotational speeds but demanding significant torque output.

• High-Resolution Encoder Feedback: The motor incorporates a high-resolution incremental or absolute encoder with 20-bit resolution (1,048,576 pulses per revolution). This feedback resolution provides exceptional positioning accuracy and smooth velocity control for precise motion profiles. The absolute encoder maintains position memory without battery backup, simplifying startup after power interruption.

• Reinforced Shaft Construction: The straight shaft with key and tapped mounting holes increases shaft stiffness and torque transmission capacity, enabling the motor to handle high inertial loads and radial forces without premature bearing wear.

Sigma-II Servo Driver Compatibility

The SGMGH-09DCA6F-OY is designed for use with Yaskawa Sigma-II series servo drivers, particularly the SGDH series amplifiers such as SGDH-15AE or higher (matching the 850W rating). The driver supplies regulated three-phase AC power to the motor windings, receives high-resolution encoder feedback, and executes motion commands in position, speed, or torque control modes. The combination of the SGMGH motor with the SGDH driver provides fully realized closed-loop servo control, implementing advanced tuning algorithms for optimal performance across the application load range.

Functional Overview

The SGMGH-09DCA6F-OY converts electrical energy from the servo driver into rotational mechanical energy, with the encoder providing continuous position and velocity feedback for closed-loop control. The high inertia rotor provides enhanced rotational stability, making this motor particularly well-suited for applications requiring smooth motion at moderate speeds. The motor's electromagnetic design balances high torque output with efficient operation, reducing heat generation. Nominal operating temperature range supports installation in standard industrial control cabinet environments.

Installation and Configuration

The SGMGH-09DCA6F-OY mounts to machinery using the standard flange mounting pattern. Proper shaft alignment is essential to prevent premature bearing wear. Electrical connections include power leads for the motor windings and a feedback cable connecting to the servo driver's encoder port. Shielded cables and proper grounding practices are required to minimize electromagnetic interference. The motor should be installed in a location providing adequate ventilation for cooling, with ambient temperature maintained within specified limits.

Maintenance and Reliability

The SGMGH-09DCA6F-OY is designed for long-term reliability with maintenance-free bearings that do not require regular lubrication. Periodic inspection should include checking for unusual noise or vibration during operation, verification that mounting bolts remain tight, and monitoring motor temperature under load. When properly applied within its torque and speed ratings, the SGMGH-09DCA6F-OY provides dependable service in industrial environments. The encoder provides absolute position storage without battery backup in standard configurations.

Conclusion

The Yaskawa SGMGH-09DCA6F-OY servo motor delivers high torque output and precision positioning for demanding motion control applications. With its 850W output, high inertia design, high-resolution encoder, and compatibility with Sigma-II servo drivers, the SGMGH-09DCA6F-OY addresses the requirements of heavy-duty industrial automation where torque and stiffness are priorities.