Mitsubishi Electric MR-J2S-100A MELSERVO J2-Super Series AC Servo Amplifier

SKU MR-J2S-100A

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12-month warranty
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Manufacturer: Mitsubishi Electric
Product No.: MR-J2S-100A
Country of origin:United States
Product Type: AC Servo Drives
Payment: T/T, Western Union
Weight: 500g
Dimensions: 280 x 210 x 130 mm
Shipping port: Xiamen
Warranty: 12 months

Engineered to deliver high-precision motion control within automated systems, the Mitsubishi Electric MR-J2S-100A servo amplifier provides robust closed-loop regulation for industrial positioning applications. This 1.0 kW drive module integrates seamlessly into standard control architectures, accepting both analog commands and high-speed pulse train inputs to drive compatible MELSERVO rotary motors with exceptional dynamic response.

Key Features

High-Resolution Feedback: Fully compatible with 17-bit (131072 pulses/revolution) absolute and incremental encoders for superior positioning accuracy.
Versatile Control Modes: Supports Position, Speed, and Torque control modes, with the ability to switch modes via external I/O commands.
Real-Time Auto-Tuning: Continuously analyzes mechanical load inertia and automatically adjusts gain parameters during operation.
Integrated Protection Circuits: Built-in safeguards against overcurrent, regenerative overvoltage, overload, encoder communication faults, and thermal runaway.
Compact Footprint: Optimized heatsink design allows for dense control cabinet layouts with minimal spacing requirements.

Applications

Multi-axis CNC machining centers and precision milling machinery.
High-speed packaging, labeling, and material handling systems.
Automated pick-and-place gantry robots and Cartesian coordinate systems.
Semiconductor manufacturing and wafer processing equipment.
Textile machinery and printing press tension control systems.

Technical Specifications

Parameter	Specification Value
Manufacturer	Mitsubishi Electric
Model Number	MR-J2S-100A
Series	MELSERVO J2-Super
Rated Output Power	1.0 kW (1000 Watts)
Main Circuit Power Supply	3-phase 200-230 VAC, 50/60 Hz
Permissible Voltage Fluctuation	3-phase 170-253 VAC
Control Circuit Power Supply	1-phase 200-230 VAC, 50/60 Hz
Control System	Sinusoidal PWM control / current control system
Speed Frequency Response	550 Hz or more
Dynamic Brake	Built-in
Cooling Method	Forced cooling (integrated fan)
Enclosure Rating	IP00 (Open type)
Country of Origin	Japan
Shipping Weight (Calculated)	3.0 kg
Package Dimensions (Calculated)	280 x 210 x 130 mm

Connections and Interfaces

Connector / Terminal	Function / Circuit Assignment
L1, L2, L3	Main AC power input terminals (3-phase 200-230 VAC)
L11, L21	Control circuit AC power input terminals (1-phase 200-230 VAC)
U, V, W	Servo motor power output connections (Phase U, V, W)
P, C, D	Regenerative option terminals (short-circuit bar between P and D for internal resistor)
CN1A / CN1B	Control I/O, pulse train input, and analog command interfaces
CN2	Encoder feedback connector (10-pin high-density interface)
CN3	RS-232C / RS-422 serial communication port for PC connection

Empirical Engineering Insights

Alternative Models & Compatibility

The MR-J2S-100A is the direct, enhanced successor to the legacy MR-J2-100A amplifier. When migrating from the older J2 series, parameters must be converted using the MR Configurator software (Setup121E or newer). Note that physical mounting dimensions are identical, but the J2S features improved encoder processing algorithms, meaning older J2 motors may require parameter adjustments to prevent initialization errors.

Application Pitfalls & Engineering Notes

In high-inertia or rapid deceleration applications, the internal regenerative resistor can overheat, triggering an AL.30 (Regenerative Error). If this occurs, install an external regenerative resistor (such as the MR-RB32) across terminals P and C, and ensure the factory-installed short-circuit bar between P and D is completely removed. Failure to remove this bar when using an external resistor will damage the internal drive circuitry.

Commissioning & Wiring Tips

During initial bench testing or commissioning without a host controller, the drive will display a persistent AL.E6 (Emergency Stop) fault. To bypass this for testing, wire a physical jumper between terminal EMG (CN1A, pin 15) and SG (CN1A, pin 10). Always ensure that the encoder cable connected to CN2 uses double-shielded twisted-pair cabling with the shield terminated directly to the connector shell to mitigate high-frequency EMI.

Installation Guidelines

CRITICAL WARNING: Ensure all AC input power (L1, L2, L3 and L11, L21) is completely disconnected and verify that the charge LED on the front panel is fully extinguished before touching any terminals. Residual DC bus voltage can exceed 300 VDC and remains present for several minutes after power-off.

1

Mount the amplifier vertically on a flat, unpainted metal panel to ensure optimal heat dissipation and solid chassis grounding.

2

Maintain a minimum clearance of 10 mm on both sides and 40 mm above and below the unit for adequate airflow from the integrated cooling fan.

3

Connect the control circuit power supply to L11 and L21 before or simultaneously with the main circuit power (L1, L2, L3) to prevent synchronization faults.

4

Route motor power cables (U, V, W) and encoder feedback cables through separate conduits with at least 30 cm separation to prevent noise coupling.

FAQ

What does the AL.30 fault code indicate on the MR-J2S-100A?

AL.30 indicates a Regenerative Error. This occurs when the regenerative energy returned to the drive exceeds the capacity of the built-in regenerative resistor. To resolve this, install an external regenerative option (like the MR-RB32) and remove the short-circuit bar between terminals P and D.

Can I run the MR-J2S-100A on single-phase 230V power?

The MR-J2S-100A is officially rated for 3-phase 200-230 VAC input. Running a 1.0 kW drive on single-phase power is not recommended by the manufacturer as it can cause excessive DC bus ripple, leading to undervoltage faults (AL.10) under load.

How do I clear the AL.E6 fault code during commissioning?

AL.E6 is an Emergency Stop warning. It is active when the EMG terminal is open. To clear this fault during testing, wire a jumper between the EMG terminal (CN1A pin 15) and the SG terminal (CN1A pin 10).

What software is used to configure parameters on this drive?

The MR-J2S-100A is configured using Mitsubishi's MR Configurator software (specifically Setup121E or newer) connected via an RS-232C or RS-422 serial cable to the CN3 port.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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