Yaskawa SGMPH-04AAA61D-OY Sigma-II AC Servo Motor

The Yaskawa SGMPH-04AAA61D-OY is a compact low-inertia AC servo motor from the distinguished Sigma-II series, delivering 400 watts of rated output power for precision motion control applications. This motor represents the culmination of Yaskawas decades of experience in servo technology, combining high power density with exceptional dynamic response characteristics. The SGMPH-04AAA61D-OY is engineered for applications requiring rapid acceleration and deceleration, including robotics, semiconductor manufacturing equipment, automated assembly machinery, and high-speed pick and place systems.

Motor Design and Construction

The SGMPH-04AAA61D-OY is classified within the low-inertia rotor category, meaning its rotating mass is optimized for minimal moment of inertia to achieve the highest possible acceleration rates. This design characteristic enables the motor to change speed quickly in response to command signals, reducing settling time in positioning applications and increasing throughput in cyclic operations. The motor housing incorporates standard oil sealing to protect internal components from contamination by lubricants, coolants, or other industrial fluids encountered in operating environments. The straight shaft end is machined with a keyway and tapped hole for secure mechanical coupling to driven equipment, allowing positive torque transmission without slippage.

Performance Parameters

The motor delivers a rated torque of 1.27 Newton meters at its rated speed of 3000 revolutions per minute, providing substantial mechanical power output relative to its compact envelope dimensions. Peak torque capability extends significantly beyond the rated value, enabling the motor to handle transient overload demands such as acceleration of high inertia loads or brief periods of elevated force requirements. The operating voltage specification of 200 V AC is standard for industrial servo systems in many regions, providing compatibility with common power distribution systems. Motor current draw at rated operation is approximately 2.3 amperes, within typical capabilities of corresponding servo drive units from the Sigma-II product family.

Feedback System and Control Integration

Precise control of motor position and velocity is enabled through the integrated high-resolution encoder, which provides feedback information about rotor position relative to stator windings. The 17-bit absolute encoder reports absolute position information upon system startup, eliminating the need for a homing sequence in many applications. Absolute encoders retain position information through power loss events, allowing systems to resume operation at known positions without returning to reference switches or sensors. The encoder signal connects to a compatible Sigma-II series SERVOPACK drive unit, which executes closed-loop control algorithms to regulate current, velocity, and position based on command inputs and feedback data. This control architecture enables accurate positioning with minimal following error, even under varying load conditions.

Electromagnetic Brake and Safety Features

The SGMPH-04AAA61D-OY incorporates an electromagnetic holding brake as a standard feature, adding safety and functionality for certain application requirements. The brake engages automatically when power to the motor is removed, holding the rotor in position to prevent unintended movement of the load. This feature is essential for vertical axis applications where gravity would otherwise cause the load to descend when the motor is de-energized, as well as for maintaining position during extended idle periods without continuous current draw. The brake releases when the SERVOPACK applies power to the motor windings, allowing normal motion control to proceed without operator intervention.

Application Compatibility

The Sigma-II series motor is compatible with corresponding SERVOPACK drive units that provide the power conversion and control functions necessary for operation. System configuration includes establishing motor parameters within the drive, tuning gain settings for optimal response with specific mechanical loads, and defining behavior for fault conditions, limits, and operational sequences. The motor meets industrial standards for electrical safety and electromagnetic compatibility when installed in accordance with manufacturer specifications, providing reliable operation in automated production environments.