Siemens Cerberus CS1140 Commissioning page 90

Line break
Line break or hard
short
1. Check
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
nect logger and re-
configure D-Bus,
Õ Check chain for-
wards/backwards
Displayed on LCD
86
Fire & Security Products
Siemens Building Technologies Group
Line break
AND
Line section in collec-
tive mode AND
Detector
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
Reconfigure D-Bus,
wait 2 minutes, repeat
if collective mode still
active
Line unit in
collective mode AND
detector
1. Line break or hard
short AND missing
device
2. 2x Line break OR 2
line short circuits
event
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
con-
connect logger and reconfigure D-Bus
Õ 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.
Possible fault
Only possible after startup
or after reconfiguration of
D-Bus with loop line
No
trouble message
Startup problem on
ASIC
Remedy
e1249d 4
01.1999