Emotron VSU Error 1: oC1

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

Fault code1

Code oC1 indicates an overcurrent condition due to various factors including motor parameter errors or short circuits. The manual's first action is: “Reduce torque boost value”

Model
Emotron VSU
Display shows
oC1 (1)
Type
Fault code
Source
Manual p. 249

What 1 means

oC1 p. 249

Common causes

  • Torque boost is too big under V/f control p. 249
  • Starting frequency is too high p. 249
  • Accel time is too short p. 249
  • Motor parameters are improperly set p. 249
  • Output short circuit (phase-to-phase short circuit or output ground short circuit) p. 249
  • Overload is too heavy p. 249
  • Inappropriate V/f curve under V/f control p. 249
  • Restart the rotating motor p. 249

What to do

  1. Reduce torque boost value p. 249
  2. Drop starting frequency p. 249
  3. Prolong the Accel time p. 249
  4. Set the parameters correctly according to motor nameplate p. 249
  5. Check motor connection and output ground impedance p. 249
  6. Reduce the load p. 249
  7. Set V/f curve correctly p. 249
  8. Reduce current limited value or start through speed search p. 249

If 1 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Emotron service.

Open the manual at page 249 All VSU error codes Manual details & download

This page summarises what the manufacturer’s manual says about 1; 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.