Mitsubishi M80 Servo Drive MDS-EJ-V1-40

MDS-EJ-V1-40 is a Mitsubishi Electric servo drive (axis amplifier) used in CNC machine tools.

Description

• Manufacturer: Mitsubishi Electric
• Series: MDS-EJ / EJH series
• Model: MDS-EJ-V1-40
• Type: 1-axis servo drive / servo amplifier
• Application: CNC lathes, milling machines, machining centers

Main Function

This unit is a motion control drive that:

• Receives commands from the CNC controller
• Drives a servo motor with precise control of position, speed, and torque
• Works in closed-loop using encoder feedback
• Controls one machine axis (X, Y, Z, or auxiliary axis)

Key Specifications (typical)

• Rated current: 40 A class
• Supply voltage: 200–230 VAC (200V class, 3-phase or single-phase depending on system)
• Drive type: PWM servo amplifier with built-in dynamic brake
• Cooling: Forced air (cabinet mounted)
• Protection: IP20 industrial enclosure

System Role in CNC

CNC controller → MDS-EJ-V1-40 (servo drive) → Servo motor → Machine axis movement

Important Clarification

• Not a CV unit (power supply)
• Not a DH-AL reactor
• It is the actual axis motor drive