SICK L 4000 Manual De Instrucciones página 340

Chapter 8
316
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
Fault diagnosis
Display
LED of
Orange sender fails
to light up
Sender LED
illuminates
at half inten-
sity
Sender LED
Orange illuminates
at full inten-
sity
Receiver
Yellow LED does
not illumi-
nate
LED flashes
Yellow
LED illumi-
Yellow
nates
Cause
Pin 4 on the
sender connected
to +24 V or no
power supply at
the sender
Pin 4 on the
sender connected
to UE 401
Pin 4 on the
sender not con-
nected (for the
alignment of
sender and re-
ceiver; sender
sends at full in-
tensity)
Beam from sen-
der interrupted, or
receiver has no
power supply
Receiver is re-
ceiving weak sig-
nal from the
sender (poorly
aligned or dirty)
Receiver well
aligned with
sender, receives
sender signal
Operating Instructions
L 4000 system
Rectifying the error
Check the power supply
and switch on if neces-
sary
Check the power supply
and switch on if neces-
sary
Align the sensors (chap-
ter 6.2) or clean the
lenses (chapter 7)
8010009/TI69/2009-11-26