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INOVANCE MD500ET45G is a heavy-duty G-type high-performance vector variable frequency drive belonging to Inovance MD500E series, rated power 45kW. It adopts advanced current vector control algorithm, capable of driving asynchronous induction motors and permanent magnet synchronous motors. This 45kW VFD is equipped with built-in DC reactor and independent air duct design, optimized specially for screw air compressors. It is also widely used for fans, water pumps, textile machines, packaging equipment and other industrial speed regulation applications.
The MD500ET45G features outstanding low-speed torque performance, stable operation, strong overload capacity and dust-resistant structure, favored by global automation system integrators and equipment manufacturers.
Heavy-duty overload capacity: 150% rated current for 60 seconds
Multiple control modes: V/F control, SVC sensorless vector control, FVC closed-loop flux vector control
Strong low-speed torque: 150% rated torque at 0.25Hz (SVC); 180% rated torque at 0Hz (FVC)
Max output frequency: 0 ~ 500Hz
Built-in DC reactor to suppress harmonic distortion
Independent air duct design, anti-pollution for harsh workshop environment
High power density, compact structure, smaller installation footprint
Standard Modbus-RTU communication; optional PROFIBUS-DP, PROFINET, CANopen fieldbus cards
Rich programmable I/O terminals, flexible function customization
Support DC braking, multi-step speed operation and user programmable logic
Complete motor protection functions (overload, overvoltage, undervoltage, overcurrent, overheat)
CE, RoHS, UL certifie
| Item | Parameter |
| Model | MD500ET45G |
| Brand | INOVANCE |
| Rated Motor Power | 45 kW |
| Input Power | 3 Phase 380~480VAC, 50/60Hz |
| Rated Input Current | 91A |
| Rated Output Current | 91A |
| Max Output Frequency | 0 ~ 500Hz |
| Overload Rating | 150% rated current for 60s (G Heavy Duty) |
| Control Mode | V/F, SVC Sensorless Vector, FVC Closed-loop Vector |
| Speed Regulation Range | 1:200 (Open-loop SVC); 1:1000 (Closed-loop FVC) |
| Communication | Standard Modbus-RTU; Optional PROFIBUS / PROFINET / CANopen |
| Protection Class | IP20 |
| Cooling Method | Air cooling |
| Ambient Operating Temp | -10ºC ~ +40ºC |
| Storage Temperature | -20ºC ~ +60ºC |
| Altitude | ≤1000m (derating required above 1000m) |
| Relative Humidity | 5% ~95%, non-condensing |
Screw air compressor (primary application)
Industrial centrifugal fans & water supply pumps
Textile machinery, wire drawing equipment
Packaging machinery, machine tools
Conveyor systems, material handling & general industrial equipment speed control
1. Q: What is MD500ET45G?
A: 45kW, 3-phase 380–480V vector inverter for asynchronous / PM motors, ideal for air compressors.
2. Q: What about torque & speed performance?
A: 180% torque at 0.05Hz. Speed ratio 1:100 (open loop), 1:1000 (closed loop).
3. Q: Can it work in harsh industrial environments?
A: Yes. Independent air duct design supports IP54 protection, suitable for dusty workshop conditions.
4. Q: Does it support expansion and communication?
A: Compatible with external keypads, PG and communication expansion cards for flexible integration.
5. Q: Does it have energy-saving benefits for compressors?
A: Yes, dynamic speed regulation reduces energy consumption under variable load.
6. Q: What about protection, warranty & technical service?
A: Full protections + self-diagnosis for fast fault check. 12-month warranty, professional technical support available.
