Description
Product Overview
The Panasonic MSMD082S1S MINAS A5 servo motor is a 750 W, low-inertia AC servo motor designed for industrial motion-control applications that require controlled speed, torque, and positioning. It operates at a rated voltage of 200 V and delivers a rated torque of 2.4 N·m at 3,000 rpm, with a momentary maximum torque of 7.1 N·m. The motor uses an 80 mm square flange and a keyed, tapped shaft, making its mounting dimensions and shaft configuration important when matching it to an existing machine or mechanical transmission. Its lead-wire connection arrangement also needs to match the motor power and encoder wiring used by the servo amplifier.
The Panasonic MSMD082S1S incorporates a 17-bit absolute/incremental encoder with a resolution of 131,072 counts per revolution. This feedback supports closed-loop motion control when paired with a compatible MINAS servo drive and correctly configured control system. The motor has a documented IP65 protection rating, excluding the rotating output-shaft section and lead-wire ends; those areas require appropriate installation and environmental protection. Its rotor inertia is specified as (0.87 \times 10^{-4}\ kg·m^2), with a recommended load-to-rotor inertia ratio of 20 or less. Actual suitability depends on load inertia, acceleration requirements, drive sizing, and mechanical transmission characteristics.
Panasonic has discontinued the MSMD082S1S, with the published last-time-buy date of July 31, 2022. For maintenance teams supporting existing machinery, this makes exact identification and replacement planning especially important. Before ordering a replacement, confirm the motor’s complete model code, encoder compatibility, shaft and flange dimensions, rated torque, and absence of a holding brake. Panasonic identifies the MINAS A6 family as an alternative product family, but a newer motor should not be treated as a direct replacement without checking the matching drive, feedback interface, mechanical fit, and application requirements.
Product Introduction
A servo motor replacement can affect positioning accuracy, acceleration, and drive compatibility if its torque rating, encoder interface, or shaft geometry differs from the original. The Panasonic MSMD082S1S provides 750 W rated output, 2.4 N·m rated torque, and a 3,000 rpm rated speed in an 80 mm flange package.
For legacy CNC equipment, indexing tables, and automated machinery, verify the connected servo amplifier and feedback wiring before installation. Because this model is discontinued, checking the full suffix and mechanical configuration is particularly important when sourcing a replacement.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Panasonic Industry |
| Model | MSMD082S1S |
| Product Family | MINAS A5 |
| Motor Series | MSMD |
| Motor Type | Low-inertia AC servo motor |
| Rated Output | 750 W |
| Rated Voltage | 200 V AC |
| Rated Current | 4.0 A RMS, reference value |
| Rated Torque | 2.4 N·m |
| Momentary Maximum Torque | 7.1 N·m |
| Rated Speed | 3,000 rpm |
| Maximum Speed | 4,500 rpm |
| Rotor Inertia | (0.87 \times 10^{-4}\ kg·m^2) |
| Encoder Type | 17-bit absolute/incremental |
| Encoder Resolution | 131,072 counts/revolution |
| Holding Brake | None |
| Flange Size | 80 × 80 mm |
| Mounting Hole Spacing | 90 mm |
| Shaft | Keyed, center-tapped |
| Connection Type | Lead wires for motor and encoder |
| Protection Rating | IP65, excluding rotating shaft section and lead-wire ends |
| Weight | Approximately 2.3 kg |
| Power Supply Capacity | 1.3 kVA |
| Recommended Load Inertia Ratio | 20:1 or less |
| Compatible Drive Family | Selected MINAS A5 drives; verify exact drive model |
| Product Status | Discontinued |
| Last-Time-Buy Date | July 31, 2022 |
Source: Panasonic’s official product specifications and published distributor data. Confirm the applicable motor and drive manuals for wiring, environmental limits, and operating conditions.
MSMD082S1S
Related Products
The following models are related Panasonic servo motors or compatible drive-family options. Mechanical fit and electrical compatibility must be checked before substitution.
- MSMD082S1U — Related 750 W, 200 V MINAS A5 motor with a different shaft/seal configuration. Its published specification includes an oil seal, unlike the MSMD082S1S.
- MSMD082S1D — Related 750 W motor variant; verify shaft configuration, brake option, and feedback requirements before use.
- MSMD082S1A — Related 750 W motor variant with a different shaft configuration.
- MSMD082S1B — Related 750 W variant with a holding-brake option; not equivalent to the brake-free S1S model.
- MSMD082S1N — Related motor variant with a D-cut shaft configuration.
- MSMD082S1P — Related motor variant with a holding brake and D-cut shaft configuration.
- MSMD082S1T — Related motor variant with a holding brake and keyed shaft configuration.
- MINAS A6 servo motors — Panasonic’s suggested alternative family for discontinued MINAS A5 products. Confirm the exact A6 model and drive pairing rather than assuming direct interchangeability.
- MCDHT3520 — MINAS A5-series servo drive listed as compatible with the . Confirm the exact amplifier model, supply arrangement, and control interface.
- MCDKT3520 — MINAS A5II-series drive listed for this motor; verify the intended control mode and system configuration.
Frequently Asked Questions
1. What is the Panasonic used for?
It is a 750 W low-inertia AC servo motor for industrial motion control. Typical applications include positioning systems, indexing equipment, and automated machinery requiring closed-loop speed and position control.
2. Which servo drive is compatible with the ?
Panasonic lists several MINAS A5 and A5II servo amplifiers as compatible, including the MCDHT3520 and MCDKT3520. The correct choice depends on the control interface, supply arrangement, feedback requirements, and application configuration. Verify the exact drive model against Panasonic’s compatibility documentation.
3. Can I replace the with an MSMD082S1U?
Do not assume that they are mechanically identical. The MSMD082S1U has an oil seal, while the is specified without one. Compare the full motor specifications, shaft arrangement, installation conditions, and drive compatibility before substitution.
4. Does the have a holding brake?
No. Panasonic’s specification lists the as a motor without a holding brake. If the machine requires the shaft to remain stationary when power is removed, evaluate the existing mechanical brake or choose a properly verified brake-equipped motor variant.
5. Can I hot-swap this servo motor?
No. A servo motor is a wired electromechanical device, not a plug-in module intended for live replacement. Isolate the drive and power sources, follow the machine’s safety procedure, and secure any suspended or gravity-loaded axis before disconnecting the motor. Follow the applicable manufacturer instructions for reconnecting and commissioning the feedback system.
6. Is the Panasonic still manufactured?
Panasonic lists the as discontinued and gives July 31, 2022, as the last-time-buy date. Current availability therefore depends on remaining stock and verified serviceable units. Check the complete model code and request condition and test information when purchasing a replacement.
7. What should I verify before installing a replacement?
Confirm the rated voltage, 750 W output, 2.4 N·m rated torque, 3,000 rpm speed, encoder type, keyed shaft, flange dimensions, and lack of a holding brake. Also check the servo amplifier model, feedback wiring, motor cable arrangement, and parameter settings. After installation, perform the required direction, feedback, and positioning checks before returning the machine to production.
