Mitsubishi MR-J3-200BS Servo Amplifier: Safe & Powerful 2kW Drive with Integrated Safety

Engineer safety into your high-power systems. The Mitsubishi MR-J3-200BS is a 2kW servo amplifier from the Safety Series, combining robust motion control with critical safety features like Safe Torque Off (STO) for risk reduction.

Core Features & Safety Advantages

• Integrated Safety: Built-in STO (Safe Torque Off) function meets safety standards.
• High Power Output: 2.0 kW (2000W) rating for demanding industrial drives.
• Secure Communication: SSCNET III high-speed fiber optic interface.
• Built for Reliability: Force-cooling design and comprehensive error protection.
• Compact & Lightweight: Easy to install and integrate into control panels.

Complete Technical Specifications

Brand: Mitsubishi Electric

Series: MELSERVO-J3 Safety Series

Model: MR-J3-200BS

Rated Output Power: 2000 W (2.0 kW)

Rated Output Current: 11.0 A

Output Voltage: 3-Phase, 170 V AC

Main Power Supply: 3-Phase, 200-230V AC, 50/60 Hz

Main Circuit Current: 10.5 A

Control Circuit Supply: 1-Phase, 200-230V AC

Control Method: Sine-wave PWM, Current Control

Safety Function: STO (Safe Torque Off) - Integrated Drive Safety

Communication: SSCNET III Interface (Fiber Optic)

Braking System: Built-in Dynamic Brake & Regenerative Resistor

Cooling Method: Force-cooling

Protection Rating: Open Type (IP00)

Operating Temperature: 0°C to +55°C (32°F to 131°F)

Storage Temperature: -20°C to +65°C (-4°F to 149°F)

Dimensions (WxHxD): 90 mm x 168 mm x 195 mm

Weight: Approximately 2.15 kg (4.75 lbs)

Protection Features: Overspeed, Overheat, Encoder Error, Regeneration Error, Overcurrent, Excessive Error.

FAQ – Safety & Application Guidance

What is STO, and why is it important?

STO (Safe Torque Off) is a safety function that prevents unexpected motor start-up. It cuts power to the motor drive circuit, allowing for safe maintenance, guarding access, or emergency stops without shutting down the entire control system.

Can I use this safety amplifier in a non-safety application?

Yes. The MR-J3-200BS functions as a full-featured, high-performance servo amplifier even if the STO safety inputs are not used. It offers all the standard control features of the J3 series with safety capability built-in.

How do I wire the safety (STO) inputs?

The STO function requires a dual-channel safety circuit (e.g., from a safety relay or controller) connected to the designated terminals. Always follow the official wiring diagram and applicable safety standards (e.g., ISO 13849-1) for your region.

Does the SSCNET III cable connect differently?

No, it uses the standard SSCNET III fiber optic cable and connectors. The network setup and communication protocol for motion control are identical to non-safety models, ensuring easy integration into existing Mitsubishi motion systems.

What's the first step if an "Excessive Error" alarm triggers?

This often means the motor position has deviated too far from the command. First, check for mechanical binding or overload. Then, verify that the load inertia ratio parameter is correctly set and consider increasing the position error limit if appropriate.

Package & Service Details

Package Includes: 1 x Mitsubishi MR-J3-200BS Safety Servo Amplifier Unit.

Warranty Coverage: Backed by a reliable 12-month product warranty.

Global Logistics: Shipped promptly via trusted carriers FedEx, UPS, and DHL.

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