11.3.3 Fault indicators
Overview
In t
he event of a fault, the type of fault is indicated by the LED display on the sender or
receiver.
The information in the tables applies both for single devices and for every device in a
cascade.
When a device in a cascade shows a fault, the displays of the other devices in the
cascade must also be observed. The fault cause is only shown on the device in which is
occurs.
Sender
P
osition of LEDs: see "Sender indicators", page 21.
Table 40: Fault indication on the sender
LEDs Possible cause Rectification
STATE Field
O Y
ellow o
Normal operation, no cable connec‐
t
ion between sender and receiver.
1)
–
O Y
ellow Ö Red
Failure in the voltage supply
b
Check the voltage supply, see
"Technical data", page 127.
b
Switch the voltage supply off and
then on again.
b
If the fault persists, replace the
sender, see "Ordering informa‐
tion", page 137.
Ö Yellow Ö Red
The sender identified an internal
f
ault.
b
S
witch the voltage supply off and
then on again.
b
If the fault persists, replace the
sender, see "Ordering informa‐
tion", page 137.
O Red ÖÖ Yellow/green
Reset of the configuration to factory
se
ttings is activated.
Additional information: see "Factory
settings", page 86.
O R
ed Ö Green
The device is in configuration mode
f
ollowing a change to the configura‐
tion.
Additional information: see "Configu‐
ration mode", page 88.
Ö Gr
een Ö Red
A problem occurred when resetting
t
he configuration to factory settings.
b
R
estart configuration, see "Fac‐
tory settings", page 86.
O Red Ö Yellow
Incompatible device detected. 1. For a sender-receiver connec‐
t
ion, ensure that the sender
and receiver devices are com‐
patible, see "Connection of
sender and receiver", page 51.
2. Ensure that the connected
sender devices as well as the
connected receiver devices in
a cascade are compatible, see
"Cascading", page 53.
O R
ed Ö Red
Communication fault between the
sender
s in a cascade.
b
Chec
k the cascade wiring.
b
Switch the voltage supply off and
then on again.
11 TROUBLESHOOTING
120
O P E R A T I N G I N S T R U C T I O N S | deTec4 Ex II 3GD 8023872/18YZ/2021-01-14 | SICK
Subject to change without notice
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