INVT DA180 Error Er20-0: Speed deviation fault

AC servo drive · taken from the manufacturer’s manual, pages cited

Fault codeEr20-0

Speed deviation fault occurs when motor speed deviates from command in non-torque mode, possibly due to phase reversal. The manual's first action is: “8400-1400h”

Model
INVT DA180
Display shows
Speed deviation fault (Er20-0)
Type
Fault code
Source
Manual p. 258

What Er20-0 means

Speed deviation fault p. 258

Common causes

  • In non-torque mode, the deviation between the motor speed and speed command exceeds the setting of P4.39. p. 258
  • The motor phases U, V, and W are in reverse. p. 258

What to do

  1. 8400-1400h p. 258
  2. 1. Ensure the motor cable phases U, V, and W are in reverse. 2. Check whether the conveyer belt or chain is too tight or the workbench reaches the boundary or encounters obstacles. If yes, resolve the problem. 3. The drive force is insufficient, which causes motor stalling. 4. The speed loop control parameters are set improperly. 5. The setting of P4.39 is too low. p. 258
  3. 1. Ensure the motor cable phases are in correct sequence and motor cables are connected properly. p. 258

If Er20-0 is still not resolved

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

Open the manual at page 258 All DA180 error codes Manual details & download

This page summarises what the manufacturer’s manual says about Er20-0; 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 INVT. Found a mistake? Report an error.