Overview
The Mitsubishi MR-J2S-500B is a high-performance AC servo amplifier from the MELSERVO J2S series, delivering 5 kW of continuous rated output for reliable motion control in demanding industrial applications. This drive unit pairs with compatible Mitsubishi servo motors to provide smooth, precise positioning and speed control across a range of manufacturing and automation tasks.
Key Features
- 5 kW Rated Output — delivers 21.7 A continuous current at 230 VAC, supporting mid-range servo motor applications
- SSCNET III/H Communication — high-speed serial bus control enables synchronized multi-axis motion and reduced wiring complexity
- Integrated Dynamic Brake — built-in holding and safety braking function minimizes external components
- Advanced Gain Search Algorithm — auto-tuning feature optimizes motor shaft gain response to variable loads for stable performance
- Comprehensive Protection — overcurrent, regenerative overvoltage, overload, overspeed, and motor overheat protection
- Flexible Power Input — supports both single-phase and three-phase 200-230 VAC (50/60 Hz) operation
Technical Specifications
- Rated Output: 5 kW (5000 W)
- Rated Current: 21.7–27.0 A @ 230 VAC
- Supply Voltage: 200–230 VAC, 50/60 Hz
- Input Phases: Single-phase (2P) or three-phase (3P)
- Communication Protocol: SSCNET III/H high-speed serial bus
- Operating Temperature: 0 to +55°C ambient
- Physical Dimensions: H 250 mm × W 130 mm × D 200 mm
- Control Method: Sine-wave PWM with current control
- Safety Features: Overcurrent, regenerative overvoltage, overload (electronic thermal), overspeed, and servo motor overheat protection
- Series: MELSERVO MR-J2S
Typical Applications
- Textile machinery and fabric handling systems
- Packaging and labeling equipment
- Printing and paper handling presses
- Assembly and material handling automation
- CNC machine tool spindle and axis control
- Robotics and precision positioning systems
Compatibility & Replacements
Compatible With
- Mitsubishi MELSERVO MR-J2S-series servo motors (MR-J2S-500B through MR-J2S-22KB range)
- SSCNET III/H network infrastructure and host controllers
- Mitsubishi MR Configurator software for tuning and parameter setup
- Mitsubishi PLC systems and motion controllers via serial communication
- Single and three-phase 200-230 VAC power supplies (50/60 Hz)
Replaces / Drop-In Replacement For
The MR-J2S-500B is a legacy amplifier (discontinued by manufacturer). Verify compatibility with your system integrator before ordering. No direct equivalent replacement is listed in current Mitsubishi product lines; the newer MR-J4-500B-KS020 (J4 series) is available as a successor with enhanced features and broader motor compatibility.
Works With
- Communication Standard: SSCNET III/H high-speed serial bus protocol
- Configuration Software: Mitsubishi MR Configurator (gain search and parameter tuning)
- Control Modes: Position, speed, and torque control via network or analog input
- Motion Controllers: Compatible with Mitsubishi Q-series, iQ-R, and legacy C-series PLCs equipped with SSCNET interface modules
