Mitsubishi M80 Servo Drive MDS-EJ-V1-15

MDS-EJ-V1-15 is a Mitsubishi Electric 1-axis servo drive unit from the MDS-EJ/EJH series, used in CNC machines.

Description

• Manufacturer: Mitsubishi Electric
• Series: MDS-EJ / EJH
• Model: MDS-EJ-V1-15
• Type: Servo amplifier (1-axis drive unit)
• Application: CNC machine tools (lathe, milling, machining centers), industrial automation

Main Function

This unit is a servo drive, meaning it controls a single motor axis. It:

• Receives motion commands from the CNC controller
• Drives a servo motor with precise torque/speed control
• Provides feedback control for accurate positioning
• Works in closed-loop with encoder feedback

Key Specifications

• Rated current: 15 A class (V1-15 = 15A model)
• Input supply: 3-phase 380–480 VAC (400V class)
• Output: 3-phase variable frequency drive to servo motor (up to ~360 Hz)
• Power level: Typically around ~1 kW class depending on configuration
• Cooling: Natural / cabinet air cooling (no external coolant loop)
• Protection: IP20 (panel/cabinet mounted)

Where it fits in CNC system

• Not a power supply (CV type)
• Not a reactor (DH-AL type)
• It sits between CNC controller and motor:

CNC controller → MDS-EJ-V1-15 → Servo motor → Axis movement

Key Features

• High precision motion control
• Built-in braking (regenerative/dynamic depending on system)
• Compact “all-in-one” drive module design
• Used in Mitsubishi MELDAS CNC systems