Frequency Inverters – Siemens Micromaster 420


  • Easy, guided start-up
  • Modular construction allows maximum configuration flexibility
  • Three fully programmable isolated digital inputs
  • Low-noise motor operation through high pulse frequency, adjustable (observe derating if necessary)
  • Complete inverter and motor protection
  • EMC filter, Class A/B option
  • Latest IGBT technology
  • Digital microprocessor control
  • Internal PI controller for simple process control
  • Inverter overtemperature protection
  • Motor protection using PTC via digital input (possible with supplementary circuit)

Siemens Micromaster 420 is a universal drive for three-phase networks with fieldbus connectivity. The drive has a modular design and various options complement a wide range of standard features. Simply plug in the operator panel and communication module without using any tools. As with the other drives in this series, the terminal connections are made easy thanks to the screwless control terminals.