10
Activation methods
Installation and Programming manual
Chapter 3
ACTIVATION METHODS
The Ivy unit can be triggered by signals from the panel, depending
on the wiring method used and also by events generated by the Ivy
unit itself.
signalling will cease when one of the following conditions occurs:
•
the alarm condition clears;
•
the maximum alarm time expires (in this case, only the audible
signalling will cease);
•
the STOP signal activates.
If, during an active alarm, the maximum audible-alarm time expires
(
Table 7, Max. duration of audible signalling
), audible signalling will
cease but visual signalling will continue until the trigger condition
clears.
3-1
Types of signal
SOUNDER/
FLASHER EVENTS
The Ivy unit processes the signals it picks up and then generates the
respective events (which can be associated with one or more
signals).
The Ivy unit can generate the following events:
•
Power failure
•
Low battery
•
Battery inefficient
•
Open casing
•
Device dislodgement
•
Foam tamper (or similar) in the horn
•
Blow torch tamper
•
Horn damage
•
I-BUS loss
Note
The audible and visual signalling triggered by “open casing”, “foam
tamper” and “blow torch tamper” events will clear after 30s, or
immediately on receiving the STOP signal.
Note
The event "Open casing" of a Ivy connected by BUS unit does not
trigger audible signalling when the connected anti-intrusion control
panel is in "Programming" mode.
MAINS FAILURE
This signalling method is widely applied as it ensures intrinsic
protection against wire-cutting. This activation method triggers
audible and visual signals (sounder and flasher) when the primary
mains power fails.
