MR-J4-700A | Mitsubishi MELSERVO 7kW Servo Drive 1/3-Phase

MR-J4-700A – Mitsubishi MELSERVO 7kW High-Precision Servo Drive

📁 Technical Data – MECE Hierarchical Tree

• ├─ Core Identification
  • │ ├─ Brand: Mitsubishi Electric
  • │ ├─ Model: MR-J4-700A
  • │ ├─ Series: MELSERVO MR-J4 Series
  • │ └─ Type: 1-axis servo amplifier, general-purpose interface
• ├─ Electrical Power & Ratings
  • │ ├─ Output Power Rating: 7 kW
  • │ ├─ Power Supply Voltage: 200–240 V AC (operational range)
  • │ ├─ Phase Type: 1-phase or 3-phase (field-flexible)
  • │ ├─ Rated Current: 37 A
  • │ ├─ Current Consumption: 28.9 A
  • │ └─ Control Power Consumption: 45 W
• ├─ Precision & Performance Metrics
  • │ ├─ Velocity Frequency Response: 2.5 kHz
  • │ ├─ Encoder Resolution: 22-bit (4,194,304 pulses/rev)
  • │ ├─ Torque Linearity: ±1% of rated torque
  • │ ├─ Speed Regulation: ±0.01% with load change
  • │ └─ Control Method: Sinusoidal PWM / vector control
• ├─ Environmental & Mechanical Durability
  • │ ├─ Ambient Temp Range: 0 to +55°C (non-freezing)
  • │ ├─ Protection Class: IP20
  • │ ├─ Cooling: Forced ventilation fan
  • │ ├─ Vibration Resistance: 5.9 m/s² (10–55 Hz)
  • │ ├─ Noise Immunity: IEC 61000-4-4 Level 3
  • │ └─ Humidity: 5% to 90% RH (non-condensing)
• ├─ I/O & Communication Interfaces
  • │ ├─ Analog Inputs: 2 channels (torque/speed ref)
  • │ ├─ Analog Outputs: 2 channels (monitor)
  • │ ├─ Digital Inputs: 9 points
  • │ ├─ Digital Outputs: 5 points
  • │ ├─ Protocols: RS-422 and RS-485 networks
  • │ └─ Command Interface: Pulse train / analog / network
• ├─ Braking & Safety Features
  • │ ├─ Braking Unit: Built-in dynamic brake + regenerative brake
  • │ └─ Safe Torque Off (STO): Integrated emergency stop
• └─ Physical Dimensions & Weight
  • ├─ Height: 11.81 in (300 mm)
  • ├─ Width: 6.77 in (172 mm)
  • ├─ Depth: 7.87 in (200 mm)
  • └─ Weight: 15.00 lbs (6.80 kg)

🔧 Installation, Debugging & Maintenance

• Mounting: Vertical panel mount, keep 10cm clearance for airflow.
• Wiring: Spring-clamp terminals for power; D-sub connectors for I/O & communication.
• Auto-tuning: One-touch real-time tuning saves setup time. Adapts to load inertia quickly.
• Diagnostic tool: MR Configurator2 (Windows) – parameter backup, oscilloscope, fault tracing.
• Maintenance: Replaceable cooling fan, LED status indicators, life alarm for capacitor/relay wear.

🔄 Compatibility & System Integration

• Servo motors: HK-KT, HG-KR, HG-SR series (Mitsubishi). Supports 7kW rated motors.
• Encoders: 22-bit absolute / incremental.
• Controllers: MELSEC iQ-R, Q, L series via SSCNET III/H or pulse train.
• Fieldbus: RS-485 Modbus RTU, RS-422 dedicated controllers.
• Compatible with 3300 5mm Proximity Probes for vibration monitoring integration.

✅ Certifications & Standards

• CE: EN 61800-3 (EMC), EN 61800-5-1 (Safety).
• UL/cUL Listed: UL 61800-5-1 for North America.
• RoHS compliant.
• Protection: IP20 (IEC 60529).

📦 Package Contents, Warranty & Delivery

• Includes: MR-J4-700A drive, quick guide, software CD-ROM, connector set (CN1/CN3/CN5).
• Warranty: 12 months against defects. Full manufacturer support.
• Shipping: 12-24 hours dispatch from order confirmation.
• Carriers: FedEx, UPS, DHL Worldwide Express.

📌 Expert Review & Manager’s Insight

🏭 Applications & Suitable Equipment

• CNC Machining: Spindle control, feed axes with high torque density.
• Industrial Robotics: 6-axis joint control & dynamic response.
• Packaging Lines: High-speed cut-to-length, rotary indexing.
• Printing/Converting: Web tension control, synchronized axes.
• Material Handling: AGV drive, conveyor systems (7kW range).
• Test Stands: Accurate speed/load profiling.

❓ Frequently Asked Questions (FAQ)

• • Q: Can I run MR-J4-700A on single-phase 230V without losing power?

    Yes. The drive supports 1-phase 200-240V AC and delivers full 7kW output. No derating needed.

  • Q: Which servo motor is the best match for 7kW performance?

    Mitsubishi HG-SR 7kW (200V class) or HK-KT series. Both use 22-bit encoder and match drive ratings.

  • Q: Does the drive come with a regenerative resistor inside?

    Built-in regenerative brake handles moderate inertia. For high-inertia applications, add an external regenerative resistor.

  • Q: How to set up RS-485 Modbus communication?

    Use parameter Pr.523 for station number. 2-wire connection to CN3 terminal. Default baudrate 19200 bps.

• Q: Field experience: drive trips “AL.52” error at high speed. Solution?

  Increase acceleration/deceleration time (Pr.PA09/PA10). Also verify main power voltage stability and motor cable length.

• Q: Can I directly replace an old MR-J4-700A with MR-J5 series?

  No. MR-J5 uses different encoder protocol (CC-Link IE TSN) and motor feedback. Keep MR-J4 for drop-in replacement.

🛒 Selection Guide & Buying Advice

• Power matching: Ensure motor rated ≤7kW / 200V class. Add external regen for continuous high torque.
• Phase flexibility: Ideal for sites with single-phase only. No 3-phase upgrade cost.
• Communication choice: RS-422 for point-to-point; RS-485 Modbus for multi-drop networks.
• Environment check: Use inside IP54 cabinet if dust exists. Keep ambient below 55°C.
• Value tip: Factory-sealed units with 12-month warranty provide better ROI than used drives.
• Need sizing support? Contact our team for parameter templates and quick start guide.