Table 18: Indication of the alignment quality
LEDs Meaning
Diagnostics LEDs
1 2 3 4 5 6 7 8
o o o o o o o o
Alignment is inadequate, or the pro‐
t
ective field is at least partially inter‐
rupted. The receiver cannot synchro‐
nize with the sender.
O
Blue
o o o
At least one beam is synchronized.
Ho
wever, the alignment is inade‐
quate, or the protective field is at
least partially interrupted.
O
Blue
O
Blue
o o
The alignment or the signal strength
is s
till not sufficient for stable avail‐
ability, or the protective field is at
least partially interrupted.
1)
O
Blue
O
Blue
O
Blue
o
Alignment is good, stable availability.
1)
2)
O
Blue
O
Blue
O
Blue
O
Blue
Alignment is very good.
1)
O
Blue
O
Blue
The topmost light beam (far from sys‐
t
em plug) is synchronized.
O
Blue
O
Blue
The bottommost light beam (near
s
ystem plug) is synchronized.
o LED off. Ö LED flashes. O LED illuminates.
1)
If external device monitoring is configured and there is an EDM warning, diagnostic LED 1 flashes, while
the other diagnostic LEDs 2, 3 and 4 indicate the alignment quality. If there is an error on the reset push‐
button, diagnostic LED 4 flashes, while the other diagnostic LEDs 1, 2 and 3 indicate the alignment qual‐
ity.
2)
If the protective fields are very wide, there is a possibility that diagnostic LED 4 does not light up, even
with optimal alignment.
11.2.2 Status indication
Overview
Dur
ing operation, the status of the safety light curtain is indicated with LEDs.
Sender
Position of the LEDs: see "Sender indicators", page 18.
If the sender and receiver are connected to each other by a cable, the LEDs on the
sender indicate the same status as the LEDs on the receiver during normal operation.
The STATE LED on the sender adopts the status of the OSSD LED on the receiver.
If the sender and receiver are not connected with each other, the STATE LED on the
sender lights up yellow when the sender is in operation and no faults are present.
Receiver
P
osition of the LEDs: see "Receiver indicators", page 19.
TROUBLESHOOTING 11
8022883/2019-03-07 | SICK O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex
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Subject to change without notice