
Chapter
10
Operating Instructions
UE 440/470
82
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
8 010 432/P097/14-03-05
Fault diagnosis
Display
Possible cause
How to remedy the error
,
Some of the input
signals at the
connections of the
operating mode
selector switch or all of
the input signals are
identical (instead of
1-of-n).
Check the wiring for short-circuit.
Check the operating mode selector switch.
-
Waiting for
configuration or
Configuration
incomplete
No error:
The display goes off automatically once the
configuration has been successfully
transferred.
If display
-
does not go off:
Check the configuration of the system using
the CDS (Configuration & Diagnostic
Software). Re-transfer the corrected
configuration to the UE 440/470.
/
or
EDM error
Check whether the contactors are stuck or
wired incorrectly and remedy the fault if
necessary.
For
: Switch the device off and back on
again.
0
Error of the reset
button or two-handed
input device
Check the reset button/two-handed input
device for correct function. The button/input
device may be defective or stuck.
Check the wiring of the reset button/two-
handed input device for any short-circuit to
24 V.
3
The key-operated
switch for bypass was
actuated.
No error:
The UE 440/470 waits until bypass is
switched off again.
T
O
*
No test pulse seen on
one or more inputs
circuits.
Check the wiring of the input devices.
T
O
+
Discrepancy time of a
dual channel input
element exceeded
Check the wiring of the dual channel input
elements.
Check whether a longer discrepancy time for
one or more dual channel input elements is
necessary.
T
O
,
Some of the input
signals at the
connections of the
operating mode
selector switch or all of
the input signals are
identical (instead of
1-of-n).
Check the wiring for short-circuit.
Check the operating mode selector switch.