The YASKAWA SGDS-08A01A is a high-performance servo drive from the legendary Sigma-III series.

Known for its reliability and precision, this drive is designed to control Yaskawa rotary and linear servo motors, offering advanced tuning features and high-speed response for industrial automation.

1. Introduction

The SGDS-08A01A is an AC servo amplifier (drive) that operates on a single-phase or three-phase input.

It is specifically engineered to pair with Yaskawa’s Sigma-III motors.

This series was a significant milestone in motion control, introducing “plug-and-play” motor recognition and enhanced vibration suppression,

making it a staple in high-precision manufacturing environments.

2. Technical Parameter Table

Parameter	Specification
Model Number	SGDS-08A01A
Series	Sigma-III (Σ-III)
Rated Output Power	750W (0.75 kW)
Input Voltage	Three-phase or Single-phase AC 200V – 230V
Rated Current	4.4 Arms
Maximum Current	13.5 Arms
Control Method	IGBT PWM Control, Sinusoidal Current Drive
Interface / Protocol	Analog Voltage / Pulse Train (Standard)
Encoder Support	17-bit Absolute / Incremental (Serial communication)
Enclosure Rating	IP20

3. Product Advantages and Features

High-Speed Response: Provides a frequency response of over 400Hz, ensuring rapid execution of complex motion commands.

Adaptive Tuning: Features automatic online tuning that adjusts to changes in machine inertia, reducing setup time significantly.

Vibration Suppression: Built-in notch filters and vibration suppression algorithms reduce mechanical resonance and improve settling time.

Compact Design: Designed to save cabinet space while maintaining high thermal efficiency.

Simple Maintenance: The drive stores motor parameters, allowing for quick motor replacement without manual reconfiguration.

SGDS-08A01A

4. Application Cases

The SGDS-08A01A is versatile and commonly found in:

Semiconductor Manufacturing: High-speed pick-and-place and wafer handling.

Packaging Machinery: Precise synchronization for labeling and wrapping.

Textile Industry: Constant tension control and high-speed weaving applications.

Metalworking: Small-scale CNC milling and precision grinding feed systems.

Robotics: Actuation for 4-axis and 6-axis industrial robotic arms.

SGDS-08A01A

5. Related & Other Models in the Same Series

The Sigma-III series encompasses a wide range of power outputs to suit various industrial needs.

Same Series (Sigma-III) – Different Power Ratings:

SGDS-01A01A: 100W Output

SGDS-02A01A: 200W Output

SGDS-04A01A: 400W Output

SGDS-10A01A: 1.0kW Output

SGDS-15A01A: 1.5kW Output

Related Model Variants:

SGDS-08A12A: MECHATROLINK-II Communications type (Networkable).

SGDS-08A01AR: Models with specialized options like internal regenerative resistors.

Important Note for Modern Users

The Sigma-III series is widely considered a “legacy” product line, as Yaskawa has moved forward with the Sigma-5 and Sigma-7 series.

While the SGDS-08A01A remains highly reliable and available in the secondary and refurbishment markets,

new projects often utilize the SGD7S-5R5A or similar newer models for enhanced features and modern fieldbus support