Frequency inverters

Frequency inverter TRANSOMIK U1
Frequency inverters overview

Frequency inverters overview

A frequency inverter is the appropriate motor control device for continuous speed adjustment. In contrast to the soft starter, it does not operate the motor rigidly on the mains at a constant frequency, but regulates both the operating voltage and the operating frequency and can therefore run the motor energy-efficiently over a wide speed range. A regenerative frequency inverter also offers the possibility of recovering the braking energy, i.e. feeding it back into the supply.

Applications:
* Improvement in efficiency with reduced space requirements and costs 
* Energy efficiency and cost reduction

Frequenzumrichter

TRANSOMIK® U1

Frequency inverters
AC 110 – 480 V / 1,5 – 30 kW

Features Applications
  • Self optimizing PWM without a fixed switching frequency with the following advantages:
    • Low motor noise
    • High starting torque
    • Optimum smooth rotation at very low speeds
  • DC braking possible without a braking chopper
  • Control voltage derived from DC link:
    • Operation at 80 V and above
    • Controlled braking possible during supply disturbance
    • Supply from DC source possible
  • Easy to service, all control connections pluggable
  • No parameter setting necessary
  • Space for customized options:
    • Technology board
  • Speed variation for all types of three-phase induction motors
  • Low-noise flow control of pumps and fans
  • Refrigeration compressors
  • Transport technology
  • Positioning drives with cyclic acceleration and braking
TRANSOMIK<sup>®</sup> U2

TRANSOMIK® U2

Regenerative frequency inverter
3AC 200 – 480 V / 4 – 200 kW

Features Applications
  • Self optimizing PWM without a fixed switching frequency with the following advantages:
    • Low motor noise
    • High starting torque
    • Optimum smooth rotation at very low speeds
  • Regenerative / no braking chopper required
  • Control voltage derived from DC link:
    • Operation at 80 V and above
    • Supply from DC source possible
  • Easy to service, all control connections pluggable
  • No parameter setting necessary
  • Space for customized options:
    • Technology board
  • Speed variation for all types of three-phase induction motors
  • Low-noise flow control of pumps and fans
  • Dynamic drives
  • Positioning drives with cyclic acceleration and braking