1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Yaskawa SGDH-04AE Servo Drive. Please read this manual thoroughly before using the product to ensure correct handling and to prevent accidents or damage.
2. Safety Information
WARNING: Improper handling of this product can lead to serious injury or death, and damage to equipment. Always observe the following safety precautions.
- Electrical Hazard: Ensure power is disconnected before performing any installation, wiring, or maintenance. Only qualified personnel should perform electrical work.
- Grounding: Properly ground the servo drive to prevent electric shock.
- Environmental Conditions: Do not expose the drive to moisture, corrosive gases, or extreme temperatures outside its specified operating range.
- Moving Parts: Be aware of connected machinery with moving parts. Ensure all safety guards are in place before operation.
- Capacitor Discharge: Wait at least 5 minutes after power-off for internal capacitors to discharge before touching terminals. Verify voltage with a meter.
3. Product Overview
The Yaskawa SGDH-04AE is a high-performance servo drive designed for precise motion control applications. It features a compact design and robust construction suitable for industrial environments.
3.1 Key Features
- 0.4 KW / 0.54 HP Output Power
- 0-230 VAC Output Voltage
- 1 Phase Input (200-230 VAC, 50/60 Hz)
- 2.8 AMP Output Current
- 3 Phase Output
- 5.5 AMP Input Current
3.2 Component Identification
The servo drive features various terminals, indicators, and connectors for power, control, and communication.

As shown in Figure 1, the top panel includes the main power input terminals (L1, L2), motor output terminals (U, V, W), and various control and communication ports. The LED display provides status and error codes. The 'CHARGE' indicator illuminates when the DC bus is charged.

Figure 2 provides an angled view, showcasing the overall design and the integrated cooling fins on the side, which are crucial for heat dissipation during operation.
4. Specifications
Detailed technical specifications for the Yaskawa SGDH-04AE Servo Drive are provided below:
| Parameter | Value |
|---|---|
| Model Number | SGDH-04AE |
| Output Power | 0.4 KW / 0.54 HP |
| Output Voltage | 0-230 VAC |
| Input Phase | 1 Phase |
| Input Voltage | 200-230 VAC (50/60 HZ) |
| Output Current | 2.8 AMP |
| Input Current | 5.5 AMP |
| Product Dimensions | 6.36 x 3.24 x 6.36 inches |
| Item Weight | 2.29 pounds |
| Manufacturer | YASKAWA ELECTRIC |
5. Setup and Installation
Proper installation is critical for the performance and longevity of the servo drive. It is recommended that installation be performed by a qualified technician.
5.1 Mounting
Mount the servo drive vertically on a flat, stable surface within an enclosure that provides adequate ventilation. Ensure sufficient clearance around the unit for airflow, especially around the cooling fins.

Figure 3 shows the side of the drive with its prominent heat sink fins, which are essential for thermal management. Ensure these fins are not obstructed.
5.2 Wiring
- Power Input (L1, L2): Connect the 200-230 VAC, 1-phase power supply to the L1 and L2 terminals. Use appropriate gauge wiring for 5.5 AMP input.
- Motor Output (U, V, W): Connect the servo motor to the U, V, W terminals. Ensure correct phase sequence.
- Grounding: Connect the protective earth (PE) terminal to a reliable ground point. This is crucial for safety and noise reduction.
- Control Wiring: Connect control signals (e.g., command signals, feedback, I/O) according to your system's requirements and the detailed wiring diagrams in the comprehensive Yaskawa SGDH manual.
- Braking Resistor (if applicable): If an external braking resistor is required for your application, connect it to the designated terminals.
CAUTION: Double-check all wiring connections before applying power to prevent damage to the drive or connected equipment.
6. Operating Instructions
6.1 Power-Up
- After verifying all connections, apply power to the servo drive.
- Observe the LED display and indicators. The 'CHARGE' indicator should illuminate, and the display should show a ready status (e.g., '0.00' or a specific code indicating readiness).
6.2 Basic Operation
- Parameter Settings: Configure necessary operating parameters using the drive's interface or a dedicated software tool, as per your application requirements. Refer to the detailed programming manual for parameter descriptions.
- Command Input: Provide motion commands (e.g., position, velocity, torque) from your controller to the servo drive via the control input terminals.
- Monitoring: Monitor the drive's status, motor position, speed, and current via the display or communication interface.
6.3 Power-Down
To power down the drive, first stop all motion commands, then disconnect the main power supply. Wait for the 'CHARGE' indicator to extinguish before handling the unit.
7. Maintenance
Regular maintenance ensures optimal performance and extends the lifespan of the servo drive.
- Cleaning: Periodically clean the exterior of the drive, especially the cooling fins, to prevent dust accumulation that can impede heat dissipation. Use a soft, dry cloth. Do not use solvents.
- Inspection: Regularly inspect wiring connections for looseness or damage. Check for any signs of overheating, discoloration, or unusual odors.
- Fan Replacement (if applicable): If the drive has a cooling fan, check its operation and replace it if it becomes noisy or stops working.
- Environmental Check: Ensure the operating environment remains within specified temperature and humidity limits.
WARNING: Always disconnect power and wait for capacitor discharge before performing any maintenance.
8. Troubleshooting
This section provides basic troubleshooting steps for common issues. For detailed error codes and advanced diagnostics, refer to the comprehensive Yaskawa SGDH series manual.
| Problem | Possible Cause | Solution |
|---|---|---|
| Drive does not power on | No input power; Blown fuse; Incorrect wiring | Check power supply; Inspect fuses; Verify wiring connections. |
| Motor does not move | No command signal; Incorrect parameters; Motor wiring error; Emergency stop active | Check command source; Verify parameter settings; Inspect motor wiring; Release E-stop. |
| Overcurrent error | Motor short circuit; Excessive load; Incorrect tuning | Inspect motor and cables; Reduce load; Retune servo system. |
| Overvoltage error | Regenerative energy too high; Input voltage too high | Install or check braking resistor; Verify input voltage. |
| Overheat error | Insufficient cooling; Ambient temperature too high; Excessive load | Ensure proper ventilation; Reduce ambient temperature; Reduce load or duty cycle. |
9. Warranty and Support
The Yaskawa SGDH-04AE Servo Drive is covered by the manufacturer's standard warranty. For specific warranty terms and conditions, please refer to the documentation provided with your purchase or contact Yaskawa Electric directly.
For technical support, service, or replacement parts, please contact your authorized Yaskawa distributor or visit the official Yaskawa website. When contacting support, please have your product model number (SGDH-04AE) and serial number readily available.
Yaskawa Electric Corporation
Official Website: www.yaskawa.com







