YASKAWA SI-P3 Error EFO: Option Card External Fault

AC Drive Option PROFIBUS-DP · taken from the manufacturer’s manual, pages cited

Fault codeEFO

The option received an external fault from the controller, indicating a device malfunction or input error. The manual's first action is: “['1. Find the device that caused the external fault and remove the cause.', '2. Clear the external fault input from the controller.']”

Model
YASKAWA SI-P3
Display shows
Option Card External Fault (EFO)
Type
Fault code
Source
Manual p. 56

What EFO means

Option Card External Fault p. 56

Common causes

  • The option received an external fault from the controller. p. 56

What to do

  1. ['1. Find the device that caused the external fault and remove the cause.', '2. Clear the external fault input from the controller.'] p. 56

Before you service the product, read the safety instructions in the manual p. 16.

If EFO is still not resolved

  • Contact Yaskawa or a Yaskawa representative p. 7
    “ContactYaskawaoraYaskawarepresentative andprovidethemanualnumbershownonthefrontcoverto ordernewcopiesofthemanual.”
Open the manual at page 56 All SI-P3 error codes Manual details & download

This page summarises what the manufacturer’s manual says about EFO; 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 YASKAWA. Found a mistake? Report an error.