
Operating Instructions
Chapter
8
UE 440/470
8 010 432/P097/14-03-05
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
75
Commissioning
8.1.2
Switch-on sequence
After switch-on, the UE 440/470 runs through the switch-on cycle. During the switch-on
cycle, the 7-segment display indicates the device status.
When commissioning a UE 440/470, the following display values are possible:
Step
Display
Meaning
1
D
,
E
,
F
,
G
,
H
,
I
,
J
,
M
Testing the 7-segment display. All segments are
activated sequentially.
2
-
Device is in configuration mode
or
2
*
Any configuration of one or more ESPE saved in the
safety controller is transferred to them (see
Chapter 9.4 "Configuration memory" on Page 79).
or
2 or 3
&
System ready for operation
Other display
Safety lock activated. Malfunction in device or in
connected actuators or sensors or their wiring. See
Chapter 10.4 "Displays of the 7-segment display"
on Page 81.
Display
Red
Green
Yellow
Meaning
,
-
+
OSSD deactivated
Reset required
-
,
-
OSSD activated
,
-
-
OSSD deactivated
Other display
Malfunction in device or in connected actuators or
sensors or their wiring. See Chapter 10.3 "LED
displays" on Page 81.
The LEDs are grouped in two blocks. The left block indicates the statuses of OSSD A
(outputs O2.0 and O2.1), and the right block indicates that of OSSD B (outputs O2.2 and
O2.3). See Chapter 3.3.1 "LEDs and 7-segment display" on Page 15.
Tab. 23: 7-segment display
during and after the switch-
on sequence of initial
commissioning
Tab. 24: Displays of the LEDs
after the switch-on sequence
during commissioning