Description
Technical Parameters
General purpose VFD: Nidec MG series
Excellent Control Performance
- Superior software control platform with proprietary vector control algorithms.
- Genuine current vector control enables decoupled control of torque current and excitation current.
- Advanced vector control algorithms support both induction and permanent magnet motors.
- Three control modes: sensorless vector control, PG vector control, and V/F control. True hardware speed tracking function offers enhanced stability and reliability compared to software tracking.
- Dynamic torque current control ensures rapid response to load variations.
- Acceleration current suppression function utilizes a specialized algorithm to prevent startup torque loss and avoid faults caused by high starting current.
- Excellent low-frequency torque characteristics: open-loop vector control delivers 150% torque at 0.5 Hz, meeting the low-frequency high-torque demands of machine tools, hoisting, and other industries.
- Strong overload capability: sustains 180% current for 20 seconds.
- Maximum output frequency up to 550 Hz.
- High-precision speed control enables precise synchronization.
Powerful Features
- Multiple frequency composite setting functions.
- Open-loop/closed-loop torque control with online switching between torque mode and speed mode.
- PID function with two sets of proportional-integral parameters, customizable PID output range, and support for sleep mode.
- V/F separation control in V/F mode.
- Tension-dedicated inverter with automatic diameter calculation and pre-drive functions, suitable for slitting machines, dyeing machines, laminating machines, etc.
- Droop control for automatic load balancing.
- Fixed-length control function.
- Supports MODBUS-RTU communication protocol via RS-485 interface, enabling multi-drive synchronization.
- Configurable with various expansion cards for enhanced flexibility.
- Automatic energy-saving operation, automatic restart after power loss, and keyboard-based parameter copying functions.
- User parameters can be backed up and restored via terminals.
- Comprehensive fault protection and operational monitoring capabilities.
Exceptional Adaptability
- Proprietary IGBT drive circuit ensures reliable operation of power devices.
- All models in the series include phase-to-phase short-circuit protection; 18.5 kW models feature ground fault protection for harsher environments.
- Wide voltage operating range: 304V AC to 456V AC.
- PCB coated with three-proof lacquer.
- Optimized EMC design for heavily interfered working environments.
- 100% incoming material inspection.
- Automated single-board and whole-machine testing to minimize testing blind spots.
Innovative Structural Design
- Independent air duct design across the series separates cooling air ducts from electrical components, reducing failure rates.
- Compact design optimized through thermal simulation, achieving a volume approximately 70% of mainstream brands with equivalent power ratings.
- Graphical keypad designed for intuitive operation. Dual RJ45 crystal connectors on the operation panel enhance communication interference resistance and facilitate external extension.
- Extensive use of aluminum-zinc alloy plates and protective coatings ensures excellent grounding, shielding, and corrosion resistance.
- All models feature DC cooling fans, reducing risks of cooling system failure associated with AC fan malfunctions.
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