Chapter 3
68
Product description
Display
Meaning
Error. To rectify errors
∏
Yellow
• Remove activation/
ν Green
activate
• Switch the supply
voltage off and
back on again
• Replace device
• Check wiring/
connections and
repair as necessary
• Check electronics in
subsequent devices
(safety controller or
PLC) and repair as
necessary
Meaning of the symbols:
The LED is illuminated constantly.
Ν
The LED is flashing.
∏
The LED is flashing quickly.
∏ ∏
The LED is off.
ν
© SICK AG • Industrial Safety Systems • Germany • Subject to change without notice • 8010934/YTC9/2016-04-01
Operating Instructions
IN4000 Standard
Sensor signals