Siemens Cerberus CS1140 Commissioning page 93

1. Milestone missing
2. Open line
3. Hard short
4. ASIC Startup problem
Reconfigure D-Bus, wait 2
minutes, repeat procedure
if necessary
If fault rectified: Startup
problem on ASIC
1. At the terminal, select
Poll function unit infor-
mation and check the
number of addresses
forwards/backwards,
or
and reconfigure D-Bus
Õ Check chain for-
wards/backwards.
2. Check line after each
device with a multime-
ter.
forwards <> backw. <> 0
Creeping line break (line
resist. too high and not
constant)
Displayed on LCD
Possible fault
Remedy
Milestone = DM or DC
Fire & Security Products
Siemens Building Technologies Group
Line unit in collective
mode AND same num-
ber of trouble messages
as configured detectors
Stub line
connect logger
- Only possible after startup of a
line or after inserting a new de-
vice
- No trouble message relating to
line short circuit or line break
Loop line
1. The number of configured mile-
stones does not agree with those
installed
2. FET problem (with DMs, DC1131)
3. Creeping line break
At the terminal, select Poll function unit infor-
mation and check number of addresses for-
wards/backwards, or connect logger and re-
configure D-Bus*,
Õ Check chain forwards/backwards
Forwards > Configuration
Forwards < Configuration
Forwards = Config. –1,
but all detectors/mile-
stones installed
Backwards = Config.
Compare logger printout with configuration of detector
types
Note DMs and DCs (milestones) and trouble mes-
sages in logger printout
Too many milestones
on the line
Missing detectors/mile-
stones OR creeping line
break
Disconnect forward line,
reconfigure D-Bus, wait
2 minutes
FET problem
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01.1999