3
Design and Function
12/39 ekr 500 digital Unit Touch – Application with Wide Array Edge Sensors
3.3.4 Indicator LED
The bicolour indicator LED in the housing shows how many edges
are detected by the wide array edge sensor.
Fig.3: Indicator LED
Colour of
the LED
Signification
OFF
The sensor has detected no web edge.
RED
The sensor has detected one web edge.
GREEN
The sensor has detected two web edges.