Panasonic MDMA202P1G AC Servo Motor – MINAS A4 Series 2kW Middle Inertia Motor
The Middle Ground That Gets the Job Done
In servo motor selection, inertia class is one of the decisions engineers get wrong most often. The Panasonic MDMA202P1G lands deliberately in the middle – medium inertia, 2 kW of rated output, and predictable torque behavior that makes machine commissioning straightforward.
Part of Panasonic's MINAS A4 family, this motor belongs to the medium-inertia line positioned for applications where load variation is regular and servo response needs to be stable without being twitchy.
Technical Specifications
| Parameter |
Value |
| Product Family |
MINAS A4 |
| Inertia Class |
Middle inertia |
| Rated Output |
2,000W (2.0 kW) |
| Rated Speed |
2,000 RPM |
| Rated Torque |
9.55 Nm |
| Encoder Type |
17-bit absolute/incremental |
| Encoder Resolution |
131,072 ppr |
| Flange Size |
130 * 130 mm |
| Lead-out Configuration |
Connector type |
| Connector (Motor & Encoder) |
Cannon plug (MS series) |
| Protection Rating |
IP65 |
| Supply Voltage |
200V AC class, 3-phase |
| Ambient Operating Temperature |
0 to +55°C |
What Medium Inertia Means in Practice
Panasonic's A4 lineup spans three inertia classes – low, medium, and high. Medium-inertia motors absorb load fluctuations more gracefully than low-inertia motors, while still accelerating quickly enough for most industrial cycle times.
At 2 kW and 2,000 RPM, the MDMA202P1G produces 9.55 Nm continuously – a torque figure that gives the motor real authority over loaded axes without requiring a gearbox. The motor weighs approximately 10.6 kg, which should be factored into axis design calculations.
The 17-Bit Encoder and What It Delivers
The MINAS A4 family's 17-bit encoder delivers 131,072 pulses per revolution, providing fine feedback granularity that enables stable operation at low speeds and precise stop positioning.
The G encoder designation indicates a combined absolute/incremental encoder, allowing the same motor to operate in applications requiring true absolute position retention or incremental operation without hardware changes.
Connector Architecture and Field Realities
The MDMA202P1G uses cannon (MS series) connectors at both the motor power cable and encoder cable connections – a robust, bayonet-locking format that provides secure mechanical retention and resists vibration-induced loosening.
The IP65 rating applies to the motor body proper – fully dust-tight and protected against water jets from any direction. The standard P1G variant does not include an integrated shaft seal.
Where This Motor Belongs
- CNC machining center feed axes – where consistent torque at moderate speeds and reliable absolute position retention reduce cycle overhead
- Robotic arm joint drives – where medium inertia provides stable response under variable payload conditions
- Packaging and pick-and-place systems – where the 2,000 RPM rated speed provides adequate traverse velocity
- X-Y tables and gantry systems – where direct load coupling and predictable torque-to-inertia balance simplify gain tuning
- Injection molding and extrusion machinery – where sustained torque at moderate speed with stable closed-loop control defines output quality
Frequently Asked Questions
Q1: What Panasonic servo driver is compatible with the MDMA202P1G?
A: This motor works with Panasonic MINAS A4 series drivers. For a 2 kW motor, the matching A4 amplifier is the MADDT3207 or equivalent in the A4 driver family.
Q2: Does this motor retain absolute position after power is cut?
A: Yes – when the A4 driver is equipped with a backup lithium battery, position data is retained through power interruptions. Without the battery, the encoder operates in incremental mode only.
Q3: Is the MINAS A4 series still in production?
A: The A4 series has been discontinued by Panasonic. The MDMA202P1G is available through industrial distributors as surplus or new-old-stock.
Q4: What is the practical difference between medium-inertia and low-inertia motors?
A: Medium-inertia motors have a heavier rotor that buffers load variation more effectively and is more forgiving to tune on machines with moderate mechanical compliance.
Q5: Does this variant include a holding brake?
A: No. The MDMA202P1G does not include an electromagnetic holding brake. For vertical axes, a brake-equipped variant is required.
The Panasonic MDMA202P1G is part of the discontinued MINAS A4 series. Verify driver compatibility, encoder battery requirements, and shaft seal specifications against your application before ordering.
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