Description
Product Introduction & Engineering Value
The Yaskawa SGMJV-04ADE6S is a 400 W AC servo motor from the Sigma-5 SGMJV family, designed for compact motion systems requiring accurate positioning and fast response. It provides 1.27 N·m rated torque, 3000 RPM rated speed, and supports high-speed operation up to 6000 RPM depending on application conditions.
For engineers maintaining existing Yaskawa motion platforms, this motor is commonly selected as a direct replacement component when the servo amplifier, controller, and mechanical transmission remain serviceable. Successful replacement depends on matching motor code, encoder configuration, and machine tuning parameters.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Yaskawa Electric |
| Model Number | SGMJV-04ADE6S |
| Product Series | Sigma-5 SGMJV |
| Motor Type | AC Permanent Magnet Servo Motor |
| Rated Output | 400 W |
| Rated Voltage | 200 VAC |
| Rated Current | 2.7 A |
| Rated Torque | 1.27 N·m |
| Peak Torque | 4.46 N·m |
| Rated Speed | 3000 RPM |
| Maximum Speed | 6000 RPM |
| Encoder | 20-bit serial encoder |
| Number of Phases | 3-phase |
| Insulation Class | Class B |
| Mounting | Flange mounting |
| Protection | Totally enclosed, self-cooled design (IP65 except shaft opening) |
Field Application & The “Trench” Experience
A precision dispensing machine in an electronics production line began showing inconsistent cycle times after one positioning axis developed excessive following error alarms. The servo amplifier reported intermittent deviation faults, but electrical checks showed the amplifier itself was operating normally.
The maintenance team traced the issue to the aging motor assembly. The original SGMJV-04ADE6S was replaced with a verified Yaskawa unit, followed by encoder verification and servo tuning adjustment. The machine returned to stable operation without changing the PLC program or mechanical slide assembly.
Typical applications include:
- PCB assembly positioning axes
- Semiconductor handling mechanisms
- Small CNC feed and indexing systems
- Automated inspection equipment requiring repeatable rotary positioning
Transparency SOP: QA & Testing
A New Surplus or Refurbished Yaskawa SGMJV-04ADE6S should be released only after controlled inspection.
Testing Procedure
- Identification Verification
- Confirm complete model code: SGMJV-04ADE6S.
- Verify rating label and manufacturer markings.
- Check connector and shaft configuration.
- Mechanical Inspection
- Inspect flange surface and mounting holes.
- Check shaft rotation for abnormal resistance.
- Examine housing condition and contamination signs.
- Electrical Checks
- Verify winding resistance balance.
- Check insulation condition.
- Inspect encoder connector integrity.
- Operational Validation
- Test with compatible Yaskawa SERVOPACK when available.
- Confirm feedback response.
- Check for abnormal vibration or noise.
SGMJV-04ADE6S
The Veteran’s Tech Trap Guide
⚠️ Do Not Replace by Output Power Alone
A 400 W servo motor may look identical to another 400 W unit, but encoder type, shaft design, and motor code determine compatibility.
PRO TIP:
Always compare the complete ordering string, not only the SGMJV-04A prefix.
⚠️ Encoder Configuration Must Match
The SGMJV-04ADE6S uses high-resolution encoder feedback. Incorrect encoder settings or incompatible SERVOPACK configuration can create immediate feedback alarms during startup.
⚠️ Tuning Data Can Affect Machine Performance
Replacing the motor without checking gain settings may result in overshoot, vibration, or slower response, especially on high-precision axes.
Dynamic FAQ
Q1: What is the Yaskawa SGMJV-04ADE6S?
The SGMJV-04ADE6S is a Sigma-5 series AC rotary servo motor designed for industrial automation motion systems requiring accurate positioning and speed control.
Q2: What are the main specifications of the SGMJV-04ADE6S?
The motor is rated at 400 W output, 200 VAC, 2.7 A current, 1.27 N·m rated torque, 3000 RPM rated speed, and 6000 RPM maximum speed.
Q3: Can the SGMJV-04ADE6S replace another Yaskawa servo motor?
Only after confirming voltage class, encoder type, mounting dimensions, shaft specifications, and SERVOPACK compatibility.
Q4: Is the SGMJV-04ADE6S still useful for legacy equipment?
Yes. Many production facilities continue maintaining Sigma-5 motion systems because replacing the entire control architecture can require significant engineering changes.
Q5: How should a New Surplus SGMJV-04ADE6S be verified?
Verification should include label confirmation, mechanical inspection, electrical testing, and functional checks with compatible servo equipment.
Q6: What information is needed when ordering a replacement motor?
Provide the complete motor model, existing amplifier model, machine axis application, encoder requirements, and any available servo parameter backup files.
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