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Description
The Yaskawa SGDM-01AD is a compact AC servo amplifier of the Sigma-II generation for low-power drives. It is technically based on the SGDH platform, which is why alarms and troubleshooting of the SGDH series are fully compatible. The device is proven in continuous operation and is frequently used in compact CNC axes, handling systems, and special machines.
Overview
- Device category: AC Servo Amplifier (Servopack)
- Series/Class: Sigma-II, 200-V class
- Power class: 0.1 kW
- Design: compact, convection-cooled, service-friendly
Model Designation
- SGDM = Yaskawa Sigma-II Servopack (Compact Series)
- 01 = Power level 0.1 kW
- A = 200-V class
- D = Digital/Analog Interface
Technical Data
| Feature | Value |
|---|
| Manufacturer | Yaskawa Electric Corporation |
| Input Voltage | 1 Ph 200–230 V AC, 50/60 Hz |
| Input Current | 2.0 A |
| Output Voltage | 3 Ph 0–230 V AC |
| Output Current | 0.91 A |
| Output Power | 0.10 kW (0.13 hp) |
| Ambient Temperature | 0–55 °C |
| Cooling | Convection cooling |
| Protection Class | IP1X |
| Weight / Dimensions | n. a. |
Connections & Interfaces
- L / N – 1-Phase mains input 200–230 V
- U / V / W – Motor outputs
- CN1 – Control and I/O interface (24 V DC)
- CN2 – Encoder connection
- CN3 – RS-232C / Parameterization (SigmaWin+)
- LED Display – Status and alarm codes
Control Board / Modules
| Module | Description | Quantity |
|---|
| Control Board | Control, logic, communication | 1 |
| Power Board | Output stage for low power | 1 |
| DC Link | Capacitors / Energy buffer | 1 |
| Power Section | Compact power section | 1 |
Alarms & Troubleshooting (SGDH compatible, 10 most important)
| Code | Designation | Typical Finding | Check | Remedy |
|---|
| A.02 | Parameter Breakdown | EEPROM data faulty | Initialization (Fn005) | Reload parameters |
| A.05 | Combination Error | Motor/Drive incompatible | Check type | Use matching motor |
| A.10 | Overcurrent / Overheat | Overcurrent or overtemperature | Check U/V/W, load | Check power section |
| A.30 | Regeneration Error | Regeneration path error | Check internal regeneration | Repair drive |
| A.32 | Regenerative Overload | Regeneration too high | Check load profile | Reduce load |
| A.40 | Overvoltage | DC link voltage too high | Measure mains voltage | Check supply |
| A.41 | Undervoltage | Supply too low | Check input | Stabilize mains |
| A.51 | Overspeed | Encoder/phase error | Check encoder | Correct wiring |
| A.71 | Overload 1 | Short-term overload | Check current curve | Check mechanics |
| A.C9 | Encoder Comm Error | Encoder communication disturbed | Cable / Shielding | Replace cable |
Typical Applications
- Compact CNC axes
- Pick-and-place systems
- Fine positioning modules
- Laboratory and testing technology
- Special machines with small servos
Service Notes
- Save parameters before service
- Regularly check encoder and motor cables
- Keep ventilation openings clean
- No insulation measurement (Megger) when installed
- In case of encoder errors, always check cable and shielding
Repair Description
- Input check: Visual inspection, measurement of mains and DC link voltage, short-circuit test
- Disassembly & Cleaning: Opening the housing, cleaning the boards, visual inspection of connectors
- Analysis: Checking the power stage, capacitors, current measurement, and control logic
- Repair: Replacement of defective power components and aged parts
- Testing & Load Test: Test run with reference motor, monitoring current and temperature
- Long-term test & Conclusion: Continuous operation under load, documentation of measurement results