Description
The Mitsubishi MDS-E-SP-20 is a spindle drive unit (servo amplifier) from Mitsubishi Electric’s MDS-E series, used in CNC machine tools to control spindle motors (SJ-series spindle motors).
It is not a motor — it is the drive module that powers and controls the spindle motor.
Key Specifications (MDS-E-SP-20)
| Specification | Value |
|---|---|
| Series | MDS-E Series |
| Type | 1-axis spindle drive unit |
| Rated Current | 7 A |
| Maximum Current | 20 A (peak) |
| Input Voltage | 270–324 V DC (main power) |
| Control Power | 200–240 V AC |
| Control Method | Sine wave PWM control |
| Cooling | Forced air cooling |
| Protection | IP20 (excluding terminal block) |
| Weight | ~3.8 kg |
| Operating Temp | 0 to +55°C |
(Source: Mitsubishi Electric CNC spindle drive specifications)
Features
- Controls CNC spindle motors (SJ-4-V series etc.)
- High-speed PWM control for smooth spindle rotation
- Compact 1-axis spindle amplifier design
- Designed for Mitsubishi CNC control systems
- Stable torque and speed regulation for machining accuracy
- Forced-air cooling for continuous industrial duty
Typical Applications
- CNC milling machines (spindle control)
- CNC turning centers (lathe spindle drive)
- Machine tool spindle control systems
- Industrial CNC automation equipment