Yaskawa SGMAS-01A2A-YR11 – 100W AC Servo Motor | Sigma-II Platform
Engineering Background
The Yaskawa Sigma-II (SGMAS) series represents one of the most widely deployed AC servo motor platforms in precision motion control. Engineered for high-cycle industrial automation, the SGMAS-01A2A-YR11 delivers 100W continuous output with a compact A-frame flange, making it the preferred choice for axis positioning in semiconductor handling, packaging machinery, and CNC auxiliary drives.
Product Positioning
This unit is a direct OEM-equivalent replacement and new-build component for Yaskawa SGDM/SGDH series servo drives. It is sourced through verified industrial supply channels and undergoes functional inspection prior to dispatch. Procurement engineers specifying Sigma-II motion axes will find this motor a drop-in fit for existing wiring harnesses and drive parameter sets.
Complete Technical Specifications
| Part Number | SGMAS-01A2A-YR11 |
| Brand | Yaskawa Electric Corporation |
| Series | Sigma-II (SGMAS) |
| Rated Output Power | 100 W |
| Rated Voltage | 200 V AC (3-phase / single-phase compatible) |
| Rated Speed | 3,000 rpm |
| Rated Torque | 0.318 N·m |
| Peak Torque | 0.955 N·m |
| Rotor Inertia | 0.0277 × 10⁻⁴ kg·m² |
| Encoder Type | Incremental, 2,500 ppr (10,000 pulses/rev after quadrature) |
| Encoder Code | A2 (2500 ppr incremental) |
| Flange Size | A-frame (60 mm square) |
| Shaft Type | Straight shaft, no keyway (YR11) |
| Brake | None |
| IP Rating | IP55 (shaft seal excluded) |
| Insulation Class | Class F |
| Ambient Temperature | 0 °C to 40 °C (operating); -20 °C to 60 °C (storage) |
| Weight | Approx. 0.42 kg |
| Compatible Drive | Yaskawa SGDM-01A, SGDH-01AE (Sigma-II series) |
| Connector Standard | Yaskawa CN1/CN2 standard harness |
Proven Application Environments
- Semiconductor & Electronics Manufacturing – Wafer handling, pick-and-place, and die bonding axes requiring sub-micron repeatability.
- Packaging Machinery – High-speed indexing, label applicators, and form-fill-seal lines with continuous duty cycles.
- CNC & Machine Tools – Auxiliary feed axes, tool changers, and rotary tables on Fanuc/Mitsubishi hybrid retrofits.
- Robotics & Collaborative Arms – Joint actuators in SCARA and Cartesian robot configurations.
- Medical & Laboratory Automation – Dispensing, pipetting, and slide-scanning platforms requiring low-vibration operation.
- Textile & Printing Equipment – Tension control and registration axes on web-handling lines.
Engineering Advantages
- High Torque Density – 0.318 N·m continuous torque from a 60 mm frame; 3× peak torque ratio supports aggressive acceleration profiles.
- 2,500 ppr Incremental Encoder – Provides 10,000 counts/rev in quadrature mode, sufficient for most positioning applications without absolute encoder cost premium.
- Compact A-Frame Footprint – 60 mm flange integrates into space-constrained machine designs; direct bolt-on replacement for existing Sigma-II installations.
- IP55 Sealing – Resists coolant mist and dust ingress in machine-tool environments.
- Proven Platform Longevity – Sigma-II drives and motors remain in active production support; spare parts and parameter documentation are widely available.
- No-Brake Simplicity – YR11 suffix confirms no holding brake, reducing wiring complexity and eliminating brake power supply requirements for horizontal-axis applications.
System Architecture & Signal Flow
The SGMAS-01A2A-YR11 operates within a closed-loop position/velocity/torque control architecture when paired with a Yaskawa SGDM-01A or SGDH-01AE servo drive:
- Command Input: Pulse train (sign + pulse / CW+CCW / A/B quadrature) from host PLC or motion controller via CN1.
- Encoder Feedback: 2,500 ppr A/B/Z differential signals returned to drive via CN2 encoder cable.
- Current Loop: Drive PWM output (200 V AC bus) energizes motor windings at up to 3× rated current for peak torque.
- Alarm Output: Drive CN1 ALM signal propagates to PLC for fault interlocking.
- Parameter Tuning: Pn100 (speed loop gain) and Pn102 (position loop gain) are the primary tuning registers for this motor-drive combination.
Sourcing & Quality Verification
- All units sourced from authorized industrial distributors or verified OEM surplus channels.
- Pre-shipment inspection includes: nameplate verification, encoder signal continuity check, winding resistance measurement (phase-to-phase balance ≤ 5% deviation), and insulation resistance test (≥ 100 MΩ at 500 V DC).
- Original manufacturer labels and date codes preserved; no remarking or refurbishment.
- Packaging: anti-static foam insert, moisture-barrier bag, outer carton with shock indicators.
- Certificate of conformance available upon request for regulated industries.
Procurement Process
- Step 1 – Confirm Part Number: Verify SGMAS-01A2A-YR11 against your BOM or existing motor nameplate before ordering.
- Step 2 – Request Quote: Contact [email protected] for volume pricing, lead time, and export documentation (CO, packing list, commercial invoice).
- Step 3 – Order Confirmation: Purchase order accepted via email; proforma invoice issued within 1 business day.
- Step 4 – Shipment: DHL / FedEx / UPS express available; sea freight consolidation for bulk orders. HS Code: 8501.52 (AC motors, multi-phase, 750 W or less).
- Step 5 – Incoming Inspection: Recommended checks upon receipt: visual inspection, encoder cable continuity, and no-load spin test at low voltage before installation.
Technical FAQ
- Q: Is SGMAS-01A2A-YR11 compatible with Sigma-V (SGMJV) drives?
- A: No. Sigma-II motors use a different encoder protocol and connector pinout from Sigma-V. A Sigma-II drive (SGDM/SGDH) is required.
- Q: Can I add a brake to this motor?
- A: The YR11 suffix indicates no brake. The brake variant is SGMAS-01A2A-YR21. Retrofitting a brake to a non-brake motor is not supported by Yaskawa.
- Q: What is the maximum cable length between motor and drive?
- A: Yaskawa specifies a maximum of 20 m for standard encoder cable and 50 m with a line driver option. Exceeding this may cause encoder signal degradation.
- Q: Is this motor RoHS compliant?
- A: Yaskawa Sigma-II series motors manufactured after 2006 comply with RoHS Directive 2011/65/EU. Confirm date code on nameplate if compliance documentation is required.
- Q: What is the typical lead time?
- A: In-stock units ship within 1–3 business days. Out-of-stock items are sourced within 7–15 business days depending on regional availability.
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