Operating Instructions Chapter 3
UE402
8009874/YT67/2016-02-22 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 21
Subject to change without notice
Product description
3.5 Display elements
T
he UE402 has a diagnosis LED. Moreover, all operational status indicators appear im-
mediately on the corresponding C4000 sender and/or receiver.
Display Meaning
Yellow LED off: no supply voltage
Yellow LED illuminated: device ready for operation
Yellow LED flashing: error (see section 8 “Fault diagnosis” on page 30)
UE402
diagnostic LED of the UE402
Diagnostic LED