Description
MDS-EJ-SP-160 is a Mitsubishi Electric high-power spindle drive unit from the MDS-EJ/EJH CNC drive series, designed for controlling CNC spindle motors in industrial machine tools.
Description
- Manufacturer: Mitsubishi Electric
- Series: MDS-EJ / EJH Series
- Model: MDS-EJ-SP-160
- Type: 1-axis spindle drive unit with integrated converter
- Application: CNC lathes, machining centers, milling machines, turning centers, heavy-duty industrial machines
Main Function
This unit is a spindle amplifier that:
- Receives spindle speed commands from the CNC controller
- Controls spindle motor speed and torque
- Provides smooth acceleration/deceleration
- Supports regenerative braking
- Uses compact integrated spindle drive architecture
Key Specifications
- Maximum current class: 160 A
- Drive category: 1-axis spindle drive
- Control method: Sine-wave PWM spindle control
- Cooling: Forced air cooling
- Protection class: IP20
- Installation: CNC electrical cabinet mounting
- Compatible with Mitsubishi MELDAS CNC systems
Typical Electrical Characteristics
For equivalent EH/DH 400V spindle versions:
- Input voltage: 380–480 VAC, 3-phase
- DC bus range: 513–648 VDC
- Rated spindle output: approximately 26 kW class
- Continuous output current: approximately 65–75 A depending on configuration
Main Connections / Terminals
Typical terminals include:
- L1 / L2 / L3 → AC input
- U / V / W → spindle motor output
- P+, C, D → regenerative resistor connection
- CN1A / CN1B → CNC communication
- CN2 / CN3 → spindle encoder feedback
- PE / E → grounding terminal
CNC System Role
CNC controller → MDS-EJ-SP-160 → Spindle motor → Machine spindle rotation
Important Clarification
- SP models = spindle motor drives
- V1 models = servo axis drives
- CV models = power supply / converter units
- DH-AL models = AC line reactors
Features
- Compact all-in-one spindle control design
- High-precision spindle speed regulation
- Built-in regenerative capability
- High-power spindle support
- Reduced CNC cabinet size
- Designed for continuous industrial duty