INVT DA180 Error Er21-1: Position overtravel—CW

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

Fault codeEr21-1

Position overtravel—CW occurs when CW limit switch is touched, accumulated pulses exceed P0.36, or pulse frequency exceeds motor speed. The manual's first action is: “FF01-1501h”

Model
INVT DA180
Display shows
Position overtravel—CW (Er21-1)
Type
Fault code
Source
Manual p. 258

What Er21-1 means

Position overtravel—CW p. 258

Common causes

  • In position mode, the CW limit switch is touched or the accumulated feedback pulse exceeds the setting of P0.36. p. 258
  • stalling. p. 258
  • 3. Pulse input frequency is too high, exceeding the maximum motor speed. p. 258
  • 4. The step variable in the position command input exceeds the setting of P4.33. p. 258

What to do

  1. FF01-1501h p. 258
  2. 1. Ensure the CW limit switch signal is correct. 2. Ensure the setting of P0.36 is proper. p. 258
  3. position loop or speed feed-forward gain parameters. Alternatively, increase the setting of P4.33. p. 258
  4. 3. Adjust electronic gear ratio parameters. 4. Reduce the step variable in the position command input. p. 258

If Er21-1 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 Er21-1; 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 INVT. Found a mistake? Report an error.