YASKAWA SGMG-30ASA – 3kW AC Servo Motor | Sigma-II Platform
Engineering Background
The SGMG-30ASA is a high-torque, medium-inertia AC servo motor from Yaskawa Electric Corporation’s Sigma-II (Σ-II) series — one of the most widely deployed servo platforms in precision manufacturing, robotics, and CNC automation worldwide. Designed to pair with the SGDM/SGDH series servo drives, this motor delivers exceptional dynamic response and positional accuracy for demanding industrial cycles.
Product Positioning
Targeting procurement engineers and system integrators who require a proven, OEM-grade servo motor for machine tool spindle assist, conveyor indexing, press automation, and multi-axis robotic cells. The SGMG-30ASA is a direct replacement or upgrade path for legacy Sigma-I installations and is fully compatible with Yaskawa’s SigmaWin+ commissioning software.
Complete Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | SGMG-30ASA |
| Manufacturer | YASKAWA Electric Corporation |
| Series / Platform | Sigma-II (Σ-II) |
| Rated Output Power | 3.0 kW |
| Rated Speed | 1,500 RPM |
| Rated Torque | 19.1 N·m |
| Peak Torque | 57.3 N·m (3× rated) |
| Rotor Inertia | Medium inertia (SGMG frame) |
| Encoder Type | Incremental encoder, 2048 P/R |
| Voltage | 200 VAC, 3-phase |
| Insulation Class | Class F |
| Protection Rating | IP55 (shaft seal optional) |
| Mounting | Flange mount (IEC standard) |
| Shaft Type | Straight shaft with key |
| Brake | Without brake (A = no brake) |
| Country of Origin | Japan |
| Weight (approx.) | 4.46 kg |
| Compatible Drive | SGDM-30ADA / SGDH-30AE |
| HS Code (reference) | 8501.52 |
Proven Application Environments
- CNC Machine Tools – Axis feed drives and spindle assist requiring high torque density and sub-micron repeatability.
- Industrial Robotics – Joint actuators in 6-axis articulated arms and SCARA configurations.
- Semiconductor & Electronics Assembly – Pick-and-place, die bonding, and wafer handling with smooth low-speed torque.
- Packaging & Labeling Lines – High-cycle indexing and registration control with rapid acceleration profiles.
- Press & Forming Machines – Servo press tonnage control with real-time torque feedback.
- Conveyor & Material Handling – Synchronised multi-axis transport with electronic gearing via SGDH drive.
Engineering Advantages
- High Torque-to-Inertia Ratio – SGMG frame geometry optimises copper fill for maximum continuous torque at 1,500 RPM without thermal derating.
- Sigma-II Ecosystem Compatibility – Direct plug-and-play with SGDM/SGDH drives; no encoder re-parameterisation required when replacing Sigma-I SGMG units.
- IP55 Sealing – Suitable for coolant-mist and light wash-down environments common in machining centres.
- Low Cogging Torque – Skewed stator laminations reduce velocity ripple at low speeds, critical for surface-finish quality in grinding applications.
- SigmaWin+ Ready – Full auto-tuning, vibration suppression, and waveform monitoring via Yaskawa’s commissioning software.
System Architecture & Signal Flow
The SGMG-30ASA operates within a closed-loop position/velocity/torque cascade architecture:
- Controller (PLC/CNC) → pulse-train or analogue ±10 V reference → SGDH/SGDM Servo Drive → PWM current output → SGMG-30ASA Motor
- Encoder feedback (2048 P/R incremental) returns to drive for real-time position and speed correction.
- Drive communicates fault status and I/O signals to host PLC via CN1 connector (50-pin MDR).
- Optional MECHATROLINK-II fieldbus card (JUSP-NS115) enables network-based motion commands for multi-axis synchronisation.
Sourcing & Quality Verification
- OEM Traceability – All units sourced through authorised Yaskawa distribution channels or verified surplus with original packaging and date codes.
- Pre-shipment Inspection – Each motor undergoes no-load run test, insulation resistance check (≥100 MΩ at 500 VDC), and encoder signal verification before dispatch.
- Warranty – 12-month warranty against manufacturing defects; replacement or full refund policy.
- Certification – CE, UL recognised; RoHS compliant.
Procurement Process
- Submit your RFQ via the product page or email [email protected] with quantity and required delivery date.
- Receive a formal quotation with lead time, freight options (DHL / FedEx / sea freight), and payment terms within 24 hours.
- Confirm purchase order; we issue a proforma invoice and arrange export documentation (CO, packing list, commercial invoice).
- Shipment from Xiamen, China; typical transit: 3–7 business days (air), 20–35 days (sea).
- Post-delivery technical support available via WhatsApp/WeChat: +0086 19859288691.
Technical FAQ
Q: Is the SGMG-30ASA compatible with the SGDH-30AE drive?
A: Yes. The SGMG-30ASA is the standard matched motor for the SGDH-30AE (3 kW, 200 V) drive. No parameter changes are required for the motor code.
Q: Can this motor replace a Sigma-I SGMG-30A unit?
A: Mechanically yes (same flange and shaft dimensions). The encoder connector pinout differs; a wiring adapter or cable replacement is required.
Q: What is the maximum cable length between drive and motor?
A: Yaskawa specifies a maximum of 20 m for standard encoder cable and 50 m with the optional long-distance encoder cable (JZSP-CMP series).
Q: Do you provide the matching servo drive (SGDH-30AE)?
A: Yes. Contact us for a bundled motor + drive quotation with pre-tested compatibility.
Q: Is export to my country restricted?
A: Yaskawa servo products are generally EAR99 / NLR for most destinations. We handle all export documentation. Contact us to confirm for your specific country.
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Contact: [email protected] | +0086 19859288691
