Mitsubishi MR-J3-200BN-EB Servo Amplifier: Protected Performance for Demanding Environments

This is the Mitsubishi MR-J3-200BN-EB, a specialized 2kW servo amplifier from the high-performance MELSERVO MR-J3 series. The MR-J3-200BN-EB stands out with its protective conformal coating, making it suitable for applications where condensation, dust, or chemical vapors are present. It delivers reliable, precise motion control for industrial automation.

Built for Challenging Conditions

• Enhanced Protection: Features a conformal coating on the PCB for resistance to moisture, dust, and mild corrosive atmospheres.
• Robust Power: Delivers a 2.0 kW rated output with an 11A current rating for demanding applications.
• High-Speed Control: Utilizes the SSCNET III/H fiber optic interface for fast, synchronized multi-axis motion.
• Effective Cooling: Forced ventilation cooling ensures stable thermal performance under continuous operation.
• Integrated Safety: Includes a built-in dynamic brake for controlled and safe motor stopping.

Complete Technical Specifications

• Brand & Series: Mitsubishi Electric, MELSERVO MR-J3 Series.
• Model: MR-J3-200BN-EB Servo Amplifier.
• Key Feature: Conformal Coating for environmental protection.
• Rated Output: 2.0 kW.
• Rated Current: 11 A.
• Supply Voltage: 3-phase, 200-230VAC, 50/60Hz.
• Permissible Voltage: 170 to 253VAC.
• Communication Interface: SSCNET III/H (High-speed fiber optic).
• Control Method: Sine-wave PWM and current control.
• Brake Unit: Built-in dynamic brake.
• Cooling Method: Forced ventilation cooling.
• Control Power Consumption: 30 W.
• Interface Power: 24VDC, 0.15A.
• Protection Rating: IP00 (Open chassis; requires installation in a protective enclosure).
• Operating Temperature: 0°C to +55°C.
• Compatible Motors: Mitsubishi HF-KP, HF-MP, HC-KFS and other 200V-class MR-J3 compatible servo motors.

Warranty and Support

We ensure product reliability. This amplifier is covered by a standard 12-month warranty against defects in materials and workmanship.

Global Shipping

We deliver worldwide using reliable carriers: FedEx, UPS, and DHL. Tracking information is provided for every shipment.

Frequently Asked Questions (FAQ)

What is conformal coating, and when is this model necessary?

Conformal coating is a thin protective polymer layer applied to the circuit board. The MR-J3-200BN-EB is necessary in environments with high humidity, condensation, airborne dust, or mild chemical exposure (e.g., food & beverage, washdown areas, paper mills) where standard electronics could fail prematurely.

Does the conformal coating affect servicing or heat dissipation?

The coating can make board-level repair more difficult. For heat dissipation, it has a minimal impact as the critical power components are mounted on heatsinks. The primary cooling is still managed effectively by the forced ventilation system.

Can I use this amplifier in an IP54 or NEMA 4 enclosure?

Yes, absolutely. In fact, it is recommended. The amplifier's own IP00 rating means it must be installed inside a properly rated external enclosure (like IP54 or NEMA 4) to provide the complete physical and environmental protection for the system.

What is the advantage of SSCNET III/H over standard SSCNET III?

SSCNET III/H offers a higher transmission speed and improved real-time performance. This allows for faster communication cycles, more precise synchronization between a larger number of axes, and reduced control latency in high-performance machinery.

The forced cooling fan is noisy. Is this normal?

A constant airflow sound is normal for forced ventilation. However, excessive or new noise (whining, grinding) may indicate bearing wear or fan blade obstruction. Ensure the intake and exhaust vents on the external cabinet are not blocked to allow proper airflow and reduce fan strain.

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