Main Features
The DVET series vector inverters are designed for controlling three-phase asynchronous motors equipped with a speed sensor. They offer ease of use and high flexibility, combined with exceptional dynamic performance and excellent control characteristics, ensuring maximum torque even at zero speed.

Special Functions

• Motor Interface: Includes autotest for speed sensor, phase connections, and motor poles; measures electrical characteristics like stator resistance and rotor time constant; autotuning of current and flux regulators.
• Control Technology: Features speed, flux, voltage, and current regulation systems; maximum torque and current limits; regenerative operation during power loss; automatic temperature monitoring.
• Feedback Options: Supports TTL line drive encoder, sinusoidal encoder, and resolver.

Setup and Programming

• PC supervision software with electronic oscilloscope function for easy setup and diagnostics.
• RS 485 serial port with Modbus protocol; optional field bus programming and diagnostics.

Power Specifications

• Three-phase power supply 400 ÷ 440V, 50/60 Hz; external DC bus power supply option.
• IGBT power structure with built-in braking circuit; selectable switching frequency 3 ÷ 8.5 kHz.
• Overload capacity: 150% for 30 sec (S1), 200% for 30 sec (S2).

Control and Regulation

• Field-oriented vector control with rotor resistance compensation; output frequency 0 ÷ 1,300 Hz.
• Independent ramps with linear or S profile.

Protections

• Stored and displayed protections for phase-phase/phase-ground short circuits, braking resistance short circuit, inverter and motor overtemperature, overload, overvoltage, and undervoltage.

Signals and References

• 8 configurable opto-isolated digital inputs; 3 speed reference input modes; 2 analog inputs for torque reference and limit.
• Digital potentiometer function; 2 programmable analog outputs; 3 configurable digital outputs.

Technical Data

• Network Input: Three-phase 400 ÷ 440V AC, 50 ÷ 60 Hz; optional external DC bus power supply.
• Ambient Temperature: 0 ÷ 45°C; Protection Grade: IP 20.

Options

• Communication Cards: CAN BUS, PROFIBUS DP, RS 232/485 converter for PC connection.
• Software Version: MULTIDRIVE offers five operational modes including open-loop V/F, closed-loop vector, and sensorless vector (in development).
• Accessories: Remote keypad, braking resistors, line reactors, EMC filters.