Mitsubishi MR-J3-20A1 Servo Amplifier | AC Motion Control Drive

Product Overview – Core Value

The Mitsubishi MR-J3-20A1 AC servo drive delivers stable and precise motion control for industrial automation.

• This MELSERVO MR-J3 series amplifier maintains performance under unstable power conditions.
• 200W rated output supports accurate positioning and smooth motion.
• The built-in dynamic brake improves operational safety during emergency stops.

Electrical Input & Voltage Flexibility

• The MR-J3-20A1 accepts single-phase 100–120VAC input at 50Hz and 60Hz.
• The rated internal operating voltage reaches 3-phase 323VAC.
• Permissible voltage fluctuation ranges from 323VAC to 528VAC.
• This design ensures reliable operation in unstable industrial power networks.

Output Performance & Motion Accuracy

• The servo amplifier delivers 170V output with a frequency range of 0 to 360Hz.
• Rated output current reaches 1.5A for stable torque control.
• S-pattern acceleration reduces vibration and mechanical stress.
• Maximum input pulse frequency reaches 1Mpps with differential signals.

Signal Processing & Control Interface

• The drive supports RS-422 communication for high-speed data transmission.
• Open collector pulse input supports up to 200kpps.
• Advanced filtering improves resistance against electrical interference.
• Error limits restrict movement to three revolutions during fault conditions.

Environmental & Mechanical Characteristics

• The compact structure fits easily inside standard control cabinets.
• Operating temperature ranges from 0°C to +55°C.
• Fan-assisted cooling maintains thermal stability.
• The lightweight design weighs only 0.96kg.

Technical Specifications

• Brand: Mitsubishi Electric
• Model: **MR-J3-20A1**
• Series: MELSERVO MR-J3
• Product Type: AC Motion Servo Drive / Amplifier
• Rated Power: 200W (0.2kW)
• Input Voltage: Single-phase 100–120VAC
• Input Current: 5.0A
• Rated Voltage: 3-phase 323VAC
• Frequency: 50 / 60Hz
• Auxiliary Power Supply: 24VDC, 0.3A
• Dynamic Brake: Built-in

Installation Guidelines

• Install the drive vertically inside a ventilated control enclosure.
• Maintain sufficient clearance for airflow.
• Ensure proper grounding to reduce electrical noise.
• Verify voltage compatibility before initial power-up.

Package Contents

• 1 × Mitsubishi MR-J3-20A1 AC Servo Drive
• 1 × User reference documentation
• 1 × Factory-installed dynamic brake resistor
• Shipping via FedEx, UPS, or DHL

Frequently Asked Questions

• What motor capacity does this drive support?
• This servo drive supports motors rated up to 200W.
• Does the drive include regenerative protection?
• The built-in resistor manages standard regenerative energy.
• Can this model operate with unstable voltage?
• The wide voltage tolerance ensures stable operation.

Contact Information

• Email: info@oiltechcontrols.com
• WhatsApp: +86 158 8020 0923
• Author: Oiltech Controls

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