Mitsubishi MR-J3-700A4-ETHERCAT | 7 kW 400V Servo Drive
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Mitsubishi MR-J3-700A4-ETHERCAT - 7 kW High-Voltage Servo Drive with EtherCAT
Drive large-scale automation with the Mitsubishi MR-J3-700A4-ETHERCAT. This powerful 7 kW servo amplifier is designed for high-voltage industrial systems, operating on a 400V AC three-phase supply. It combines robust motion control with versatile connectivity, supporting both the proprietary SSCNET III/H and the open standard EtherCAT communication protocols. This makes it a future-proof choice for integration into diverse control architectures demanding high power and precision.
Complete Technical Specifications
Brand & Series: Mitsubishi Electric MELSERVO MR-J3 Series
Full Model Number: MR-J3-700A4-ETHERCAT
Product Type: High-Power AC Servo Amplifier (Drive)
Rated Output Power: 7 kW
Supply Voltage: 3-Phase, 400 VAC, 50/60 Hz
Communication Protocols: EtherCAT & SSCNET III/H
Control Method: Current Control, Sine Wave PWM
Protection Features: Overcurrent, Overvoltage, Overtemperature, Overload, Instantaneous Power Loss
Cooling Method: Forced Air Cooling (Fan)
Mounting Type: Panel Mount (IP00 Open Chassis)
Ambient Temperature: 0°C to +55°C (Operating), -20°C to +85°C (Storage)
Weight: Approximately 6.2 kg (13.67 lbs)
Regenerative Braking: Requires external regenerative resistor (sold separately).
Compatible Motors: Mitsubishi MELSERVO-J3 series high-power servo motors (e.g., HC-SF series).
Installation & Compatibility Guide
Install the MR-J3-700A4-ETHERCAT in a well-ventilated control cabinet. Connect the three-phase 400V AC power with appropriate safety disconnects and fusing. Choose your network: connect via EtherCAT using a standard RJ45 cable to your master (e.g., a PLC with EtherCAT master), or via SSCNET III/H using the optical fiber port. Connect the compatible 7 kW servo motor and an external regenerative braking resistor. Ensure the cooling fan has clear airflow and is free from obstruction.
Package & Warranty
What's Included: 1 x Mitsubishi MR-J3-700A4-ETHERCAT Servo Drive Unit.
Our Guarantee: This advanced drive is protected by a reliable 12-month warranty.
Fast Shipping Options
We deliver worldwide using reliable couriers: FedEx, UPS, and DHL.
Frequently Asked Questions (FAQ)
What is the advantage of having both EtherCAT and SSCNET III/H?
It provides ultimate flexibility. You can integrate the drive into a new, open-standard EtherCAT network or connect it to an existing Mitsubishi system using SSCNET III/H, protecting your investment and simplifying upgrades.
Can I use this drive on a 480V AC system?
The specification states 400V AC. While there may be some tolerance, 480V AC exceeds the rated voltage and could damage the drive. Always use a power supply matching the drive's voltage rating or use a step-down transformer.
How do I select the network to use?
The active communication protocol is typically selected via a parameter setting or a physical switch on the drive (consult the manual). You cannot use both networks simultaneously; you must choose one for primary control.
Is the EtherCAT implementation fully standard compliant?
Yes, Mitsubishi implements the EtherCAT protocol according to the ETG (EtherCAT Technology Group) standard. This ensures interoperability with other standard EtherCAT masters and devices.
What size external regenerative resistor is needed?
The required resistor size (Ohms and Watts) depends on your specific application's inertia, deceleration frequency, and cycle time. Consult the Mitsubishi technical manual or use their sizing software to select the correct external regenerative resistor.
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