Control techniques UNI1401 Unidrive 0,75kW Inverter 380-480VAC 3PH 2,2A

Unidrive 0,75kW frequency inverter can operate in five modes including Open loop V/F control, Open loop space vector control, Closed loop flux vector control, Servo and Regeneration. The VFD can be configured in minutes for a variety of industry standard applications thanks to its pre-configured application parameter sets known as Macros. Although it has since been replaced by the Unidrive SP, the original Unidrive gave users the benefits of simplicity, ease of use and flexibility.

General purpose frequency inverter for controlling motors. Frequency inverter can be used as a classical speed controller for various 3-phase AC motors. Speed and rotation direction can be controlled either locally from the front panel or remotely via analog signal or potentiometer and buttons. Motor drive can also be used when a 3-phase motor is needed to be used with single phase power supply. Using VFD (variable speed drive) is ultimately the best solution to perform such conversion.

Features:

• Position control/Digital lock
• Programmable logic functions
• Two programmable thresholds
• Mains dip ride through
• Frequency slaving
• Catch a spinning motor
• Eight preset speeds/accelerations/decelerations
• Injection and dynamic breaking
• S-ramp profiling
• Three skip frequencies with adjustable bandwiths
• Speed reference sequencer

Frequency inverter technical details:

• Power rating:
  • 0,75 kW or 1Hp
• Input voltage:
  • 380...480VAC, 3-phase
• Input frequency:
  • 48...62Hz
• Output voltage:
  • 0 to input voltage (380...480VAC depending on supply voltage)
• Output frequency:
  • 0...1200Hz (variable frequency control)
• Current rating:
  • Nominal output current:
    • Approximately 2,2 A (depending on motor configuration)
• Control modes:
  • Open-loop (V/Hz control)
  • Closed-loop (Vector control for precise speed and torque management)
• Speed control range:
  • Typically 0 to 200% of base motor speed, depending on motor type
• Torque control:
  • Supports high starting torque, up to 200% of nominal motor torque
• Overload capacity:
  • Typically 150% of nominal motor current for 60 seconds
• Cooling method:
  • Forced air cooling with integral fan
• IP protection:
  • IP20
• Operating temperature:
  • 0...+40°C without derating, up to 50°C with derating
• Humidity:
  • 95% non-condensing
• Operating altitude:
  • Up to 1000 meters (3300 feet) without derating
• User Interface:
  • Keypad for configuration and monitoring (with LED display)
• Communication options:
  • Serial interface (RS485) for remote control and monitoring
  • Optional communication modules for protocols such as Profibus, DeviceNet, Modbus
• Protection:
  • Overvoltage/undervoltage protection
  • Overload and short circuit protection
  • Motor thermal overload protection
  • Input phase loss detection

Download Unidrive-series frequency inverter user guide