Checking the sensor Exceptions/Subfault
codes
Exceptions (EN) or Subfaults (BS) are also called condition
codes and these codes provide information about a sensor
device. A code indicates small changes in the environmental
condition, sensor mechanism and how the sensor performs in the
system. To ensure that the sensor exception codes are
meaningful, all existing codes must be cleared and the system
left undisturbed for at least 24 hours.
Code definition
There are ten different conditions possible for each sensor type,
although not all of them are defined. Each condition code has a
range of 0-3.
Exception
Code
Meaning
0 This condition is OK. This code is
not displayed unless another non
zero code exists.
1 or 2 Suggests preventive maintenance is
required, where necessary, to avoid
possible false alarms.
3 The sensor is faulty. A fault condition
indication is given at the control
panel. A message reading ‘Sensor
Out of Specification’ is displayed.
"
A sensor having code 3 is automatically
disabled by the system to prevent false alarms.
To view the exceptions/condition codes of a device press Menu
On/Off button and select [Info] -> <etc> -> [Event] -> <etc> ->
[Exception] -> [Enter].
How to clear Exceptions
This can be done by removal and replacement of the sensor
chamber, by re-allocation of the loop having the sensor or, by
using the menu controls: Press Menu On/Off button to select
[Test/Eng] -> [Usercode] -> <etc> -> [Config] -> [Clear]->
[Exception] -> [Enter]. Cleared codes will return if the
conditions are still true.
Generic Commissioning instructions
52 4188-856_i2_12/06_Generic Vigilon (Compact + VA) Comms.
Device checks
Exceptions
/Condition codes
Meaning Action
1000000000or
0100000000or
1100000000
This is the sub-fire band and if set
should be taken as showing that the
sensor is at its optimum sensitivity
for its location.
No action need be taken.
2000000000or
0200000000or
2200000000
A sub-fire has been generated which
would suggest that the sensor was
either too sensitive for its
environment or that the sensor type
may be incorrect for the location.
Action should be to check location and alter
sensor state or type as required. This should
only be done with the knowledge of the
customer. Remember to re-backup all
changes to states onto the NVM Card.
0010000000or
0020000000
These codes indicate that the sensor
is in a windy location. This will cause
the chamber voltage to drop. Code
Level 1 shows one drop only, Level
2 shows greater than one drop.
The location should be checked and a change
in siting made, if required.
Note: Wind will not cause the sensor to false
alarm.
0000100000or
0000200000or
0000010000or
0000020000
This shows that the sensor time
averages are close to acceptable
limits.
On commissioning the sensor should be
replaced. A sensor with code 2 is worse than
code 1. On maintenance sensors with code 2
should be replaced.
0000001000or
0000002000or
0000000100or
0000000200
This shows that high frequency
noise events have been detected by
the system. A code 1 shows one
event and a code 2 shows more
than one event.
The device should be replaced. On
maintenance, sensor with code 2 should be
replaced. If it reoccurs then check the
environment.
0000000010or
0000000020
This shows device hardware faults.
1 for code 1 and more than one for a
code 2.
The sensor should be replaced.
0000000001or
0000000002
This shows that transmission faults
are being noted. Code 2 is worse
than code 1.
The device should be replaced. If it reoccurs
then check the environment.
Time: 15:54.07 Fri 20 December 2002
Exception
Number 2 on Loop 1
condition3333333333
Time and date when exceptions (Condition code) were read
23:15
Location of the device residing on this loop
whose exceptions are shown beneath
These condition codes indicate th
device is probably disconnected
1st 10th
For definition see tables on the following pages
To Next Page
Loading...
