Siemens Cerberus CS1140 - Page 90

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86
Fire & Security Products
Siemens Building Technologies Group
01.1999
Displayed on LCD Possible fault Remedy
Line break
AND
Line section in collec-
tive mode AND
Detector
1. Check event
memory for short
circuits
2. At the terminal, se-
lect poll function
unit information
and check the num-
ber of addresses
forwards/back-
wards, or con-
nect logger and re-
configure D-Bus,
 Check chain for-
wards/backwards
Line break or hard
short
1. ASIC Startup problem
2. Line break or hard short AND ASIC
Startup problem
3. Line break or hard short AND miss-
ing devices
4. 2x Line break OR 2x line short OR
one line break and one short circuit
each
Only possible after startup
or after reconfiguration of
D-Bus with loop line
Reconfigure D-Bus,
wait 2 minutes, repeat
if collective mode still
active
Line unit in
collective mode AND
detector
Line break
No
trouble message
Startup problem on
ASIC
1. Line break or hard
short AND missing
device
2. 2x Line break OR 2
line short circuits
OR one line break
and one short cir-
cuit
1. At the terminal select Poll function unit information and
check the number of address forwards/backwards, or
connect logger and reconfigure D-Bus
 Check chain forwards/backwards
2. In order to limit the sources of trouble, change some ele-
ments to rarely used types of detector
3. Check line after each device with a multimeter.