Device Description
The Delta VFD-VE series frequency converter is designed to regulate the speed of three-phase asynchronous motors with a power range from 0.75 to 75 kW and a short-circuited rotor. This device is capable of effectively addressing complex tasks related to speed, torque, and angular displacement regulation, performing the functions of a servomechanism. Advanced achievements of the designers at Delta Electronics are integrated into the VFD-VE series products, allowing them to occupy a leading position in the frequency converter segment.
Nominal power ranges:
- when powered by three-phase voltage of 220 V: power from 0.75 to 37 kW;
- when powered by three-phase voltage of 380 V: power from 0.75 to 75 kW;
Advantages and Features of VFD-VE Converters
- Sensorless vector control (SVC) with speed regulation in the range of 1:100;
- Vector control with feedback (FOC+PG) with speed regulation in the range of 1:1000;
- Internal (up to 16 preset positions) and external angular positioning;
- Direct torque control via feedback (Torque+PG);
- Smooth pulse width modulation;
- Automatic parameter identification mode for two motors and load inertia;
- Electromagnetic brake control function;
- Ability to switch the motor winding scheme between delta-star, 150% torque at 0 Hz;
- Motor overheating control (based on PTC thermistor);
- Built-in PID controller;
- Automatic energy-saving function for pumping systems;
- Control through a detachable control panel with a five-digit seven-segment display;
- Stabilization of the converter output voltage with varying input voltage (AVR mode);
- Automatic restart under specified conditions and smooth automatic return to the initial starting torque value with slip compensation;
- Acceleration and deceleration curves adjustable at five points;
- Automatic selection of the minimum acceleration and deceleration time.
Main Areas of Application
- Lift and transport equipment: conveyors, elevators, hoists, escalators, cranes, and others;
- Machine tools: presses, crimping machines, lathes, drilling machines, grinding machines, milling machines, and automated CNC lines;
- Food industry: packing and packaging machines, semi-finished product production lines, mixers, and others.
Converters of this series can be used in productions with high precision speed regulation requirements, providing a wide range of adjustments.