• MR-J2S-350A
1 1

Mitsubishi Electric MR-J2S-350A MELSERVO-J2S AC Servo Drive

Mitsubishi Electric MR-J2S-350A MELSERVO-J2S AC Servo Drive

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  • Hersteller: Mitsubishi Electric

  • Produkt-Nr.: MR-J2S-350A

  • Herkunftsland:Vereinigte Staaten

  • Produkttyp: AC Servo Drives

  • Zahlung: T/T, Western Union

  • Gewicht: 3500g

  • Abmessungen: 280 x 200 x 130 mm

  • Versandhafen: Xiamen

  • Garantie: 12 Monate

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Description

Executing high-precision closed-loop motion control, the Mitsubishi Electric MR-J2S-350A is a high-performance AC servo drive engineered for demanding industrial positioning applications. This 3.5 kW capacity drive operates within the renowned MELSERVO-J2S series, utilizing advanced sinusoidal PWM control with current loop integration to ensure exceptionally smooth motor rotation even at low speeds. Compatible with both three-phase 200V AC and single-phase 230V AC input configurations, this unit serves as a critical component in machine tool feed drives, automated packaging lines, and multi-axis Cartesian systems.

Features

  • High-resolution encoder feedback interface supporting absolute and incremental configurations.
  • Real-time adaptive tuning that dynamically matches changing load inertia for optimal stability.
  • Integrated dynamic brake for rapid deceleration and emergency stop execution.
  • High-speed response frequency performance exceeding 550 Hz to handle rapid-cycle dynamics.
  • RS-232C and RS-422 serial interfaces facilitating multi-drop monitoring and setup diagnostics.

Applications

  • Heavy-duty packaging machinery and vertical form-fill-seal (VFFS) systems.
  • CNC machine tool feed axes and high-speed indexing tables.
  • Multi-axis gantry robots and material handling transfer lines.
  • Precision rotary printing presses and web tension control systems.

Technical Specifications

Manufacturer Mitsubishi Electric
Model MR-J2S-350A
Series MELSERVO-J2S
Control System Sinusoidal PWM control / current control system
Rated Output Power 3.5 kW
Input Voltage / Phase 3-phase 200-230V AC, 50/60 Hz OR Single-phase 230V AC, 50/60 Hz
Permissible Frequency Fluctuation Within +/- 5%
Speed Frequency Response 550 Hz or more
Dynamic Brake Built-in
Cooling Method Forced ventilation (built-in cooling fan)
Operating Ambient Temperature 0 to 55 degC (non-freezing)
Ambient Humidity 90% RH or less (non-condensing)
Country of Origin Japan
Shipping Weight (Calculated) 3.5 kg
Package Dimensions (Calculated) 280 x 200 x 130 mm

Connections and Interfaces

Terminal / Port Function / Circuit Assignment
L1, L2, L3 Main circuit power input (3-phase AC)
L11, L21 Control circuit power input
U, V, W Servo motor output terminals (Phase matching is critical)
P, Cr External regenerative resistor connections (Remove jumper across P-D if used)
CN1A / CN1B I/O signal connector ports for host controller interfacing
CN2 Encoder feedback connector port

Empirical Engineering Insights

Alternative Models & Compatibility

The MELSERVO-J2S series is a legacy standard. When migrating legacy systems to newer architectures (such as the MR-J4 or MR-J5 series), dynamic parameter conversion and specialized terminal adapter modules are required. Ensure any replaced units match the correct physical suffix (e.g., "-A" for general-purpose analog/pulse train, or "-B" for SSCNET bus networks) as their control boards are completely non-interchangeable.

Application Pitfalls & Engineering Notes

Under heavy, high-inertia duty cycles, the MR-J2S-350A is prone to AL-30 (Regenerative Error) or AL-32 (Overvoltage) faults. If these faults persist during rapid deceleration ramps, the built-in regenerative capacity has been exceeded. Resolving this requires installation of an external, high-wattage regenerative resistor across terminals P and C, with the factory jumper between P and D removed in the software parameters.

Commissioning & Wiring Tips

Always route high-voltage motor output cables (U, V, W) in separate conduits away from sensitive low-voltage I/O cables (CN1A/CN1B) and encoder lines (CN2). Unshielded parallel routing is a primary cause of position deviation errors and signal noise. Ensure control circuit power (L11, L21) is energized prior to or simultaneously with main power (L1, L2, L3) to allow the control CPU to initialize phase-loss diagnostics correctly.

Installation Guidelines

CRITICAL WARNING: Hazardous voltages remain present within the internal bus capacitors even after the mains power supply is isolated. Wait at least 10 minutes following isolation and confirm that the red "CHARGE" LED on the physical front panel is completely extinguished before removing terminal covers or executing wiring changes.
1
Mount the drive vertically inside an enclosed electrical cabinet. Ensure a minimum spacing clearance of 40 mm on both sides and 100 mm above and below the drive to facilitate unobstructed airflow from the built-in cooling fan.
2
Connect the dedicated PE (protective earth) ground terminal first using a low-impedance copper conductor to mitigate high-frequency electrical noise and protect system electronics.
3
Wire the control circuit power supply to L11 and L21, and the main input circuit power to terminals L1, L2, and L3, ensuring proper sizing of branch circuit protection devices (breakers/fuses).
4
Securely connect the motor phase lines to terminals U, V, and W. Do not reverse these phase outputs as it will result in motor runaway faults and potential physical mechanical damage.
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Key Features:
#AC Servo Drives #MELSERVO-J2S

Can the MR-J2S-350A drive be powered by a single-phase supply?
Yes, the drive can run on a single-phase 230V AC supply connected to terminals L1 and L2. However, under heavy loads or peak torque demands, a three-phase supply is highly recommended to prevent undervoltage faults.

What is the cause of an AL-30 alarm, and how is it resolved?
AL-30 indicates a regenerative overvoltage fault. This occurs when deceleration energy back-feeds into the drive beyond internal absorption limits. Resolve this by increasing deceleration time or connecting an external regenerative resistor across terminals P and C.

What software is used to configure parameters on this drive?
The Mitsubishi MR Configurator software (such as MR-configurator2 or legacy setups matching the J2S series) is used via a serial connection to upload, modify, and monitor parameter sets.

Are the control interfaces of J2S-A and J2S-B models interchangeable?
No. The MR-J2S-350A features general-purpose pulse-train and analog inputs, while the MR-J2S-350B utilizes the proprietary high-speed SSCNET serial bus communication protocol. They are not interchangeable.

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  • 30-Tage-Garantie: Rückgaben werden für vorrätige Produkte in originaler, werkversiegelter Verpackung akzeptiert.
  • 12-Monats-Garantie: Jede Industriekomponente ist durch unsere professionelle technische Garantie abgesichert.

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