
Operating Instructions
Chapter
10
UE 440/470
8 010 432/P097/14-03-05
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
81
Fault diagnosis
10.3
LED displays
Display
O 2.0, O 2.1
O 2.2, O 2.3
Re
d
Green
Yellow
Re
d
Green
Yellow
Possible cause
How to remedy the fault/error
or change the status
-
-
-
-
-
-
No operating voltage, or
voltage too low
Check the voltage supply
and activate, if necessary.
-
,
-
-
,
-
O 2.0, O 2.1/ O 2.2, O2.3 switched on
,
-
-
,
-
-
O 2.0, O 2.1 switched off
Ensure that, for example,
the protective field of the
connected ESPE is
unoccupied.
,
-
+
,
-
+
OSSD switched off
Reset required
Press the reset button.
10.4
Displays of the 7-segment display
This section explains the meaning of the 7-segment display. A description of the positions
and symbols used at the UE 440/470 is found in Section 3.3 "Display elements" on
Page 15.
Display
Possible cause
How to remedy the error
&
System ready for
operation
No error
D
,
E
,
F
,
G
,
H
,
I
,
J
,
M
Switch-on cycle - All
segments are activated
sequentially.
No error
*
System initialisation
No error
Fig. 52: LEDs of the
UE 440/470
Tab. 25: Error displays of the
LEDs
Tab. 26: Error displays of the
7-segment display
LEDs of the
OSSD O 2.0, O 2.1
LEDs of the
OSSD O 2.2, O2.3