Faults
Fault conditions are often the result of minor
installation errors or misinterpretation of the
equipment being installed. The following points
outline the most common installation and
commissioning faults.
a.
As supplied the user code is 0123 and
the engineer code is 9999. Both codes
will revert back to these default settings
on clearing the NVM.
b.
The Engineer Program is accessed
directly from Day mode via the
engineer code.
c.
If a tamper, PA or 24Hr fire fault is
present on the system, it will go to a
lock out condition (showing the
appropriate indication). The keypad will
not produce any audible responses
and the system will not operate until
the fault has been found and rectified.
d.
The most common cause of a zone not
responding to detection is incorrect
wiring. Normally closed detectors must
be wired together in a series loop
before connecting into the appropriate
ZONE terminals. Tampers are series
wired in the same manner.
e.
Where a permanent zone fault is
showing and the loop resistance is
found to be in order, the most probable
cause is a short circuit between the
zone wiring and the tamper wiring.
When measured with a multimeter the
series resistance between the zone
and tamper wiring should be infinitely
high.
f.
If totally lost as to the cause of a fault,
remove ALL wiring from the PCB. Refit
the 4-links and test the system. Never
fit links to any positions other than
those marked on the PCB.
g.
Before testing or replacing any fuses,
ALL power must be removed. Fuses
which fail continually are almost
certainly the result of a short circuit or
low resistance across the 13V supply
or external bell supply (terminal D).
h.
Whenever working close to the mains
supply or connector, you should
exercise extreme caution.
Always isolate the mains supply before
removing the control panel covers.
i.
Where normally open detectors are
connected to adjacent zones two
pull-up resistors (not supplied) of value
33kohms must be installed.
The example below shows how to wire
normally open detectors on zones 3
and 4.
The example below shows how to wire
normally open detector on zones 3 and
a normally closed detector on zone 4.
24
4PI175 issue 1_6/01
Engineering information
Accenta/Optima G3 Intruder system
Faults
J2
2
1
4
3
6
5
8
7
Panel
PA
+
-
TAMP +13V 0V
Board
Normally open
detectors
33K
ohms
J2
2
1
4
3
6
5
8
7
Panel
PA
+
-
TAMP +13V 0V
Board
Normally
open
detector
Normally closed
detector
33Kohms