Description
The Mitsubishi MDS-E-SP-80 is a 1-axis CNC spindle drive unit from Mitsubishi Electric’s MDS-E series, designed to control Mitsubishi SJ-series AC spindle motors used in CNC machine tools.
It is a spindle amplifier/drive, not a motor.
Key Specifications (MDS-E-SP-80)
| Specification | Value |
|---|---|
| Series | MDS-E Series |
| Type | 1-axis spindle drive unit |
| Nominal Maximum Current | 80 A |
| Rated Output Current | ~19 A |
| Input Voltage | 270–324 V DC |
| Control Power Supply | 200–240 V AC |
| Control Method | Sine wave PWM control |
| Cooling Method | Forced air cooling |
| Protection Rating | IP20 (excluding terminal block) |
| Weight | ~4.5 kg |
| Application | CNC spindle motor control |
The MDS-E/EH spindle drive series supports functions such as spindle orientation, synchronous tapping, spindle/C-axis control, and high-response acceleration/deceleration control.
Features
- Designed for Mitsubishi SJ-series spindle motors
- Smooth and stable spindle speed regulation using PWM control
- High-response spindle acceleration and deceleration
- Supports encoder feedback for precise spindle positioning
- Compact industrial CNC spindle amplifier design
- Forced-air cooling for continuous-duty operation
Typical Applications
- CNC milling machine spindle systems
- CNC turning centers (lathe spindle control)
- Heavy-duty machining centers
- Industrial CNC automation equipment
- Precision metal cutting systems
Compatible Motor Examples
The MDS-E-SP-80 is commonly used with medium and high-power Mitsubishi spindle motors such as:
- SJ-4-V7.5 series
- SJ-4-V11 series
- SJ-4-V15 series
- SJ-4-V18.5 series
Compatibility depends on spindle motor current, acceleration load, and machine configuration.

