Description
MDS-EJH-V1-40 is a Mitsubishi Electric CNC servo drive unit from the MDS-EJH (all-in-one compact drive) series used in MELDAS CNC systems.
Description
- Manufacturer: Mitsubishi Electric
- Series: MDS-EJ / EJH series
- Model: MDS-EJH-V1-40
- Type: 1-axis servo amplifier (integrated servo drive with built-in power stage)
- Application: CNC lathes, machining centers, milling machines, industrial automation
Main Function
This is a servo axis drive, meaning it controls one motor axis in a CNC machine. It:
- Receives motion commands from the CNC controller
- Drives a servo motor with precise position, speed, and torque control
- Uses encoder feedback for closed-loop accuracy
- Has an integrated power section (no separate CV converter needed in EJH type systems)
Key Specifications
- Rated current: 40 A class
- Input voltage: 380–480 VAC, 3-phase (400V class systems)
- Drive type: AC servo amplifier with built-in dynamic brake
- Protection: Industrial IP20 cabinet type
- Cooling: Forced air (cabinet mounted)
System Role in CNC
CNC controller → MDS-EJH-V1-40 → Servo motor → Machine axis movement
Important clarification
- Not a CV unit (those are power supply modules like MDS-EH-CV)
- Not a DH-AL reactor (input line filters)
- It is the actual axis drive amplifier
Simple system view
- CV (EH/DH CV) → DC power supply
- DH-AL → AC input reactor (power conditioning)
- EJH-V1-40 → Servo drive (controls one CNC axis)