The Yaskawa SGDA-04AS is an AC servo amplifier from the Σ (Sigma) Series, engineered for precision motion control in industrial automation. Operating from single-phase 200–230 VAC input at 50/60 Hz, this 400 W (0.53 HP) servopack delivers 0–230 VAC output at 2.6 A rated current. The amplifier achieves exceptional speed regulation of 0.01% maximum at rated speed with a 1:5000 speed control range, making it suitable for applications demanding tight positional accuracy and repeatability.
Technical Specifications
• Input: 200–230 VAC single-phase, 50/60 Hz, 6.0 A maximum
• Output: 0–230 VAC, 2.6 A rated, 400 W
• Motor frequency range: 0–300 Hz (base 200 Hz)
• Speed regulation: 0.01% maximum at rated speed
• Speed control range: 1:5000
• Torque control repeatability: ±2.0%
• Acceleration/deceleration time: 0 to 10 seconds
• Control method: IGBT-PWM single-wave driven
• Operating temperature: 0°C to 55°C
• Storage temperature: −20°C to +85°C
– Key Features
• Compact book-shape design with approximately 1/4 the volume of conventional models
• Weight: 1.150 kg
• Varnish-coated circuit board for enhanced environmental resistance
• Incremental encoder support: 2048 PPR
• Absolute encoder support: 1024 PPR
• Auto-tuning function for simplified commissioning
• JOG operation for manual control and diagnostics
• PC monitoring and configuration capability
• Integrated system status and performance monitoring
– Control Interfaces
• Position control via reference pulse input
• Speed reference: ±6 VDC (factory setting, variable range available)
• Torque reference: ±3 VDC (factory setting, variable range available)
• Variable setting ranges supported for both speed and torque control
– Typical Applications
Precision motion control systems, machine tool servo drives, automated assembly equipment, and industrial positioning applications requiring high repeatability and tight speed regulation.

















