Issue 4.5 Aug 2005 IntelliBell 14-5
햲
Zone Tamper/Short
● Back tamper is open
● Lid tamper is open
● Skin tamper is closed
● Drilling detected
● Foam ingress detected
햳
Zone Open - due to self test
● Strobe failure
● Sounder failure
● Battery failure
햴
Zone Discon
● A loss of 12 Volt power supply
● A loss of control line
Bell Test
After any IB activation or a maintenance visit by an
installation engineer, a Bell Test is recommended. This
will activate the IB from the control panel for a short
period of time.
Output Functions
There are four output functions available on the IB and
they operate as follows:
햲
Sounder Output (SO) - On the control panel, out-
put 2 is the external sounder output. Setting the
Sounder Output (SO) function to 02 will cause the
IB sounder to activate when this panel output is trig-
gered. The Sounder Output is set as 02 b default,
but this may be changed to any panel output if
required.
햳
Strobe Output (ST) - On the control panel, output
7 is the internal sounder output. In the same manner
as for SO, setting the Strobe Output (ST) to 07 will
cause the strobe to activate when this panel output is
triggered. The Strobe output will remain On until
reset by the panel.
햴
Sounder Operation (SO) - The sounder ON period
can be programmed within a range of 1 to 90 min-
utes. It may also be disabled, whereby the optional
VAB is driven by the alarm output.
햵
Sounder Operation (SO) - The sounder ON period
can be programmed within a range of 1 to 90 min-
utes. It may also be disabled, whereby the optional
VAB is driven by the alarm output.
Sounder Operation
The Sounder is switched on either by the Sounder
Output or by the IB in response to the 12 volts supply (or
the control line) becoming disconnected. When this
happens the IB Sounder Timer starts.
● Sounder - Sounder Output Operation
When the Sounder is switched on by the Sounder
Output, the Sounder stays on until the Sounder Out-
put is switched off, or the IB Sounder Timer expires,
or the Strobe Output goes off from the on state.
If the Sounder Output is switched on again, the
Sounder will not sound. The only way the sounder
will come on again is after the Strobe Output goes
off from the on state.
● Sounder - 12V Disconnect Operation
When the Sounder is switched on by the IB after a
12 volts disconnect, it stays on until the IB Sounder
Timer expires or the Strobe Output goes off from the
on state. If the Sounder Timer expires, the IB goes
into powerdown mode until the power is recon-
nected. If the 12 volts supply is disconnected again,
the Sounder will not sound.
The only way the Sounder will come on again is if
the Strobe Output goes off from the on state. Note
that a 12V disconnect will cause the Sounder to
sound even if the Sounder has already completed a
Sounder operation for the sounder period.
A 12 volts disconnect is regarded as any voltage
under 9.5 volts and a 12 volts reconnect is regarded
as any voltage above 11.5 volts. This means that if
the voltage drops below 9.5 volts for 5 seconds or
more, then the IB will sound for the programmed
period and go into powerdown mode until the
power supply recovers to 12 volts. The installer must
ensure that when a power supply driving the IB has a
mains failure, the resulting drop in supply voltage to
the IB does not go below 10.5 volts.
Note Disabling the sounder without a VAB installed
will configure the unit to operate without an audible
alarm.
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