Keyence GV Series Error FFF: Reading exceeds the detection distance range.

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

Error codeFFF

Reading exceeds detection distance range when no workpiece or background is present, or light isn't entering the receiver. The manual's first action is: “Set a workpiece or background in the distance for detection from the sensor.”

Model
Keyence GV Series
Display shows
Reading exceeds the detection distance range. (FFF)
Type
Error code
Source
Manual p. 9

What FFF means

Reading exceeds the detection distance range. p. 9

Common causes

  • There is no workpiece or background within the detection distance range, or no light is entering the receiver. p. 9

What to do

  1. Set a workpiece or background in the distance for detection from the sensor. p. 9

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

If FFF 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 FFF; 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.