Keyence GV Series Error ECH: Head error

Digital CMOS laser sensor · taken from the manufacturer’s manual, pages cited

Error codeECH

Head error occurs when the sensor head is disconnected, its cable is broken, or it is damaged. The manual's first action is: “Check that the sensor head is connected.”

Model
Keyence GV Series
Display shows
Head error (ECH)
Type
Error code
Source
Manual p. 9

What ECH means

Head error p. 9

Common causes

  • Sensor head is not connected. p. 9
  • Head cable is broken. p. 9
  • Sensor head is damaged. p. 9

What to do

  1. Check that the sensor head is connected. p. 9
  2. Check that the head cable is not broken. p. 9
  3. Check the connection of the head cable to the connector. p. 9

Before you service the product, read the safety instructions in the manual p. 1.

If ECH is still not resolved

  • contact your nearest KEYENCE office p. 1
    “in the event of defective or broken items, contact your nearest KEYENCE office.”
Open the manual at page 9 All GV Series error codes Manual details & download

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