Mitsubishi MR-J2S-40A-S004 | 400W AC Servo Amplifier

Product Overview

The MR-J2S-40A-S004 is a high-performance AC servo amplifier from Mitsubishi Electric’s widely utilized MELSERVO-J2-Super series. This specific model provides a 400W output power rating and is designed for a 200V AC supply. The -S004 suffix denotes a specialized specification, often involving customized firmware or hardware configurations tailored for specific industrial applications while maintaining the core performance of the standard MR-J2S-40A.

The MR-J2S series is renowned for its high-speed processing, absolute position detection capabilities, and a sophisticated "Real-Time Adaptive Tuning" system. It serves as a reliable solution for high-precision motion control in semi-conductor manufacturing, packaging machinery, and textile automation. Despite being a legacy series, its robust design and "Plug-and-Play" motor identification continue to make it a critical component for maintaining existing production lines.

Technical Configuration

The MR-J2S-40A-S004 is engineered for versatile integration into general-purpose control systems:

• Dual Power Compatibility: Supports both 3-Phase 200–230V AC and 1-Phase 230V AC inputs, offering flexibility for different industrial power environments.

• High-Resolution Feedback: Compatible with high-resolution encoders, ensuring smooth rotation and precise positioning even at low speeds.

• General-Purpose Interface (Type A): Utilizes pulse train and analog voltage inputs for position, speed, and torque control modes.

• Real-Time Adaptive Tuning: Constantly monitors machine inertia and automatically adjusts the gain to ensure optimum stability and response.

• Compact Form Factor: Designed for high-density cabinet mounting with effective heat dissipation.

Technical Specifications

Technical FAQs

What does the "-S004" suffix represent?

In the Mitsubishi nomenclature, "-S" suffixes usually indicate a "Special" specification. This may involve custom parameter defaults, specialized communication timing, or hardware modifications for a specific OEM (Original Equipment Manufacturer). While it is largely compatible with the standard MR-J2S-40A, you should verify the specific S-number documentation if your application relies on specialized sub-functions.

Can I run this 400W drive on single-phase power?

Yes. For the 400W (40A) model, 1-Phase 230V AC is permissible. However, when using single-phase power, ensure that your wiring is connected to the L1 and L2 terminals and that the power supply can handle the peak current draw during rapid acceleration.

Is this drive compatible with MR-J3 or MR-J4 motors?

The MR-J2S series is specifically designed for use with HC-KFS, HC-MFS, HC-SFS, and HC-LFS motor series. It is generally not cross-compatible with J3 or J4 series motors due to different encoder communication protocols and connector types.

Engineering & Installation Guide

Mounting and Cooling

The MR-J2S-40A-S004 should be mounted vertically on the backplane of a control cabinet. Maintain at least 40 mm of clearance above and below the unit for natural convection. If mounting multiple amplifiers side-by-side, leave at least 10 mm of horizontal space between them to prevent mutual heating, which can lead to over-temperature alarms.

Wiring and Noise Suppression

To prevent electromagnetic interference (EMI), always use shielded twisted-pair cables for the encoder (CN2) and control signals (CN1). Ensure the motor power cable (U, V, W) is kept separate from signal lines. It is highly recommended to install a surge protector on the primary power input and a noise filter if the drive is operating near sensitive electronic measurement equipment.

Parameter Setup

For initial setup, use the MR Configurator (software) or the integrated 4-button operation panel on the front of the drive. The most critical parameters for first-time startup are the Control Mode (P0) and Load to Motor Inertia Ratio (P7). Using the Auto-Tuning function will typically resolve most oscillation or "hunting" issues during commissioning.