Description
MDS-EJ-V1-100 is a Mitsubishi Electric CNC servo drive unit from the MDS-EJ / EJH series.
Description
- Manufacturer: Mitsubishi Electric
- Series: MDS-EJ / EJH
- Model: MDS-EJ-V1-100
- Type: 1-axis servo drive / servo amplifier (built-in converter type)
- Application: CNC machine tools (lathes, milling machines, machining centers)
Main Function
This unit is a high-current servo axis drive. It:
- Receives motion commands from the CNC controller
- Drives a servo motor with precise position, speed, and torque control
- Works in closed loop using encoder feedback
- Controls one heavy-duty axis (typically high-load feed axis or spindle-related axis depending on machine design)
Key Specifications
- Rated current: 100 A class (highest in EJ V1 series)
- Input supply: 200–240 VAC, 3-phase (or single-phase depending on system design)
- Series type: All-in-one compact servo drive with built-in converter section
- Control method: High-speed digital servo control with encoder feedback
- Installation: Cabinet mounted (IP20 industrial enclosure)
Role in CNC System
In a Mitsubishi CNC architecture:
CNC controller → MDS-EJ-V1-100 (servo drive) → Servo motor → Machine axis movement
Important clarification
- It is not a CV unit (those are power supply converters like MDS-EH-CV-xxx)
- It is not a DH-AL reactor (input power filter)
- It is the main high-power axis drive amplifier
Simple system understanding
- MDS-EH / DH CV → DC power supply
- DH-AL → AC input reactor (power conditioning)
- MDS-EJ-V1-100 → Servo drive (controls motion of heavy axis)