| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Model | 6SE6440-2UD31-8DA1 |
| Product Family | MICROMASTER 440 |
| Type | AC Variable Frequency Drive (Inverter) |
| Supply Voltage | 3-phase 380–480 V ±10%, 47–63 Hz |
| Input Current | 43 A (LO / square torque); 37 A (HO / constant torque) |
| Rated Motor Power | 18.5 kW (constant torque / CT / HO)
22 kW (square-law torque / VT / LO) |
| Output Current | 38 A (CT / HO); 45 A (VT / LO) |
| Overload Capacity | 150% for 60 s; 200% for 3 sIndustry Mall – Siemens |
| Output Frequency | 0–650 Hz (programmable) |
| Control Method | V/f, Sensorless Vector, Vector Control |
| Input/Output Interfaces | 6 digital inputs; 2 analog inputs (0–10 V / 0–20 mA); 2 analog outputs (0–20 mA); 3 relay outputs (30 V DC / 5 A, 250 V AC / 2 A) |
| Integrated Brake Chopper | Yes |
| Protection Class | IP20 (open frame)Industry Mall – Siemens |
| Ambient Temperature | -10 °C to +50 °C (derate above 40 °C)Industry Mall – Siemens |
| Dimensions (H × W × D) | 520 × 275 × 245 mm |
| Weight | Approx. 16 kg |
| Certifications | CE, UL, CSA, RoHS |
| Filter | Without EMC filterIndustry Mall – Siemens |
| Status | Discontinued (replacement available) |
MICROMASTER 440 6SE6440-2UD31-8DA1
David Chong
