Description
Product Introduction
The Panasonic MSMA041A1E is a 400W low-inertia AC servo motor designed for high-speed, high-precision positioning applications within the legacy MINAS A-series family. Built to operate on single-phase or three-phase 100V AC drive power, this motor delivers reliable high-torque dynamic response across automated assembly equipment, pick-and-place robots, and semiconductor handling machinery.
Unlike higher-inertia options, the low-inertia rotor construction in the MSMA041A1E dramatically accelerates rapid start-stop motion cycles without thermal overload. Combined with an integrated 11-bit incremental encoder (2000 p/r), it offers precise feedback loop execution to prevent frame positioning errors in high-throughput production lines.
Key Technical Specifications
| Parameter | Value |
| Manufacturer | Panasonic |
| Model Number | MSMA041A1E |
| Rated Output | 400 W (0.4 kW) |
| Supply Voltage | 100 V AC |
| Rated Speed | 3000 RPM |
| Max Speed | 5000 RPM |
| Rated Torque | 1.27 N·m |
| Peak Torque | 3.82 N·m |
| Encoder Type | 11-Bit Incremental (2000 p/r) |
| Brake Option | Without Holding Brake |
| Shaft Specification | Straight Shaft with Keyway / Oil Seal |
| IP Protection Rating | IP65 (Excluding shaft pass-through) |
Application Scenarios & The “Trench” Experience
Picture this: It’s 2:15 AM on a Tuesday, and your primary high-speed packaging sorter drops offline with a position deviation alarm (E-12) on Axis 3. You swap the drive, but the error persists—the encoder feedback disc inside the old motor has sheared off from years of micro-vibrations. Downtime costs the line $4,200 an hour, and Panasonic stopped manufacturing these legacy MINAS A units years ago. Finding a drop-in, exact-fit replacement isn’t a luxury; it’s the difference between hitting target production numbers and explaining a huge loss to the plant manager at sunrise.
- Electronics Assembly – Surface-mount technology (SMT) feeders – Requires rapid start-stop positioning without overshoot.
- Packaging & Labeling – High-speed rotary indexing tables – Demands consistent 3000 RPM operation under varying mechanical loads.
- Medical Device Production – Automated reagent dispensing arms – Relies on tight encoder resolution to prevent fluid volume variance.
MSMA041A1E
Transparency SOP: Quality Assurance & Testing
We don’t just pull a box off the shelf, dust it off, and ship it out to your factory floor. Every unit undergoes strict bench testing:
- Inbound Physical Inspection: Verification of housing integrity, shaft play, keyway condition, and anti-counterfeit label validation.
- Backplane & Drive Bench Test: Hooked up directly to a matching Panasonic MADDT1110 driver under simulated full-load profiles.
- Encoder Signal Handshake: Oscilloscope trace testing on A, B, and Z phases to confirm zero pulse degradation or jitter.
- Winding Insulation Test: Megger insulation resistance test at 500V DC between phase windings and motor frame to prevent earth faults.
- Final QC & Anti-Static Packaging: Cleared for warehouse storage inside sealedESD wrap and heavy-duty custom foam boxing.
The Veteran’s Tech Trap Guide (Crucial Value-Add)
⚠️ Watch the Suffix Code: The “1E” at the end of MSMA041A1E designates the exact shaft, keyway, and encoder specification. A unit marked “1A” or “1S” might fit physically, but the key size, oil seal presence, or connector wiring could derail your shift. Double-check your broken motor’s full nameplate before ordering!
❗ Don’t YANK the Lead Connectors: The molded flying leads on this era of Panasonic motors use fragile connector housings. Pulling on the wiring instead of pressing the plastic tab release will pull the crimped pins right out of the plastic housing.
⚠️ Drives Are Not Always “Plug-and-Play”: If you install this replacement motor and the axis immediately violently oscillates or trips over-current, your drive’s gain parameters are tuned for a worn or different motor load. Clear the auto-tuning cache on the drive and re-run rigid-mode auto-tuning before throwing it straight into automatic operation.
Frequently Asked Questions (FAQ for Conversion)
Q: Is the MSMA041A1E hot-swappable while the control panel is powered up?
A: Absolutely not. Disconnecting or plugging in an AC servo motor power or encoder cable while the drive DC bus is charged will arc the connector pins and burn out the driver’s encoder input circuit instantly. Kill the main breaker and wait 5 minutes for bus capacitors to discharge.
Q: Can I use this motor with a newer Panasonic MINAS A5 or A6 drive?
A: Not directly out of the box. Legacy A-series incremental encoder feedback protocols differ from modern 20-bit or 23-bit absolute encoders used in A5/A6 drivers. You would need specialized conversion wiring or legacy drive series like the MSDA / MADDT series.
Q: Does this specific model feature an internal mechanical brake?
A: No. The “1E” suffix configuration indicates a standard straight shaft with a keyway, without an integrated 24V holding brake. If you are mounting this on a vertical Z-axis, the payload will drop when power is removed unless you have an external mechanical brake or counterweight.
Q: What is the warranty on your new surplus or refurbished MSMA041A1E units?
A: We back every single unit with a full 12-month operational warranty. If it throws an encoder fault, insulation fault, or mechanical bearing noise within 365 days of installation, we replace it or issue a full refund immediately.
Q: Why are these motors available cheaper here than through direct distributor channels?
A: Panasonic discontinued the MINAS A-series line. Direct OEM channels typically force expensive whole-system upgrades (motor, drive, cables, PLC controller). We source genuine surplus and warehouse-spares globally, letting you replace the single failed motor without spending tens of thousands on panel re-engineering.
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