Chapter
10
Operating Instructions
UE 440/470
84
© 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
7
O
-
Short-circuit at OSSD A,
connection 2
after 0 V
Check the wiring for short-circuit to 0 V.
7
O
.
Short-circuit at OSSD A
between connections 1
and 2
Check the wiring and rectify the error.
_
O
'
Short Circuit between
OSSD Pairs(Cross
Circuit).
Check the connected switching element.
Replace, if necessary.
Check the wiring for a short circuit
_
O
(
Overvoltage at OSSD B,
connection 1
Check the connected switching element.
Replace, if necessary.
Check the wiring for short-circuit to 0 V.
_
O
)
Short-circuit at OSSD B,
connection 1
after 24 V
Check the wiring for short-circuit to 24 V.
_
O
*
Short-circuit at OSSD B,
connection 1
after 0 V
Check the wiring for short-circuit to 0 V.
_
O
+
Overvoltage at OSSD B,
connection 2
Check the connected switching element.
Replace, if necessary.
Check the wiring for short-circuit to 0 V.
_
O
,
Short-circuit at OSSD B,
connection 2
after 24 V
Check the wiring for short-circuit to 24 V.
_
O
-
Short-circuit at OSSD B,
connection 2
after 0 V
Check the wiring for short-circuit to 0 V.
_
O
.
Short-circuit at OSSD B
between connections 1
and 2
Check the wiring and rectify the error.
;
O
'
Emergency stop input
device defective
Check the emergency stop input device and
its wiring.
Check whether the configuration of the
emergency stop input device (e.g.
complementary or equivalent circuit)
matches the construction.
;
O
)
Invalid configuration of
the external device
monitoring
Verify that the machine-side EDM is
connected correctly.
;
O
+
A device connected via
EFI or the connection to
the device is defective
or impaired.
Check the connected device and the
connection to this device.
Check whether a device with an EFI
connection is connected.