Emotron VSU Error U1-00: Code of the latest fault

Emotron VSU drive · taken from the manufacturer’s manual, pages cited

Fault codeU1-00

Code U1-00 indicates the latest fault detected by the system. The manual lists no action for this code.

Model
Emotron VSU
Display shows
Code of the latest fault (U1-00)
Type
Fault code
Source
Manual p. 119

What U1-00 means

Code of the latest fault p. 119

Common causes

  • No fault p. 119
  • Accel overcurrent p. 119
  • Constant-speed overcurrent p. 119
  • Decel overcurrent p. 119
  • Accel overvoltage p. 119
  • Decel overvoltage p. 119
  • Constant-speed overvoltage p. 119
  • Module protection p. 119
  • Parameter identification failed p. 119
  • Drive overloaded p. 119
  • Motor overloaded p. 119
  • Current detection abnormal p. 119
  • Ground short-circuit protection at output side p. 119
  • Input power supply abnormal p. 119
  • Phase loss at output side p. 119
  • Inverter module overloaded protection p. 119
  • Radiator thermal protection p. 119
  • Motor (PTC) thermal protection p. 119
  • Module temperature detection disconnection p. 119
  • Expansion board connection abnormal p. 119
  • Drive lines connection abnormal p. 119
  • Analogue terminal functional mutex p. 119
  • External equipment malfunction p. 119
  • Continuous running time reached p. 119
  • Accumulative running time reached p. 119
  • Power supply abnormal during running p. 119
  • EEPROM read/write fault p. 119
  • Contactor close fault p. 119
  • Port communication abnormal p. 119
  • Keypad communication abnormal p. 119

If U1-00 is still not resolved

  • Contact service or dealer for assistance p. 119
    “Code of the latest fault”

This page summarises what the manufacturer’s manual says about U1-00; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Emotron. Found a mistake? Report an error.