4-way Conventional Zone Card – K545
– Test Mode Operation
The Syncro 4-way conventional zone module
provides a cost effective solution to system
upgrades, where a number of conventional detection
zones need to be supported by the Syncro panel
in addition to the analogue addressable detection
Up to 32 Syncro 4-way conventional zone modules
may be connected to each Syncro or Syncro
AS control panel, providing support for up
to 128 conventional detection zones per Syncro
panel. The zone cards utilise RS485 data communications
and may be installed up to 1200m away from
the panel (using suitable data cable).
Each Syncro 4-way conventional zone module
has four independently monitored conventional
detection zones (short circuit and open circuit
monitoring), two independent 1 Amp rated fully
monitored sounder outputs, a volt free Fire
relay, Fault relay and an input to monitor
a remote power supply.
All inputs and outputs are configurable using
the intuitive Syncro Loop Explorer configuration
program. Each zone may have a 40 character
location message allocated and may be mapped
to any of the 500 detection zones supported
by Syncro and Syncro AS panels. The inputs
and outputs may be controlled either via the
simple “default ring” patterns
or by comprehensive cause and effect logic.
In the unlikely event that there is a loss
of data between the panel and the 4-way conventional
zone card, then it will work “stand
alone” in a default condition, whereby
a fire on any of the four zones will result
in both sounder circuits and the fire contact
In line with all the expansion cards, 16
hardware channels are allocated to this unit.
Four zone fire channels, four Zone Fault channels,
two sounder outputs, two sounder faults, Fire
Relay control, fault relay control, power
fault input and a single “zone reset”
(removes power to conventional detection devices
on all zones).
K545 “Test Mode” restriction
Because there is only a single reset control
line for all four detection zones, it is not
possible to independently reset each zone.
In general this is not a problem UNLESS using
the “Zone Test” facility, which
is used to automatically reset fire events
in zones selected in Test Mode via the Syncro
Access Level 2 (user) menu.
As the card has four independent zones, it
is not necessarily true that all four will
be in Test Mode at the same time. For zones
that are not in test mode, the panel MUST
NOT automatically reset the detection devices
– to do so would be dangerous and would
not comply to EN54-2 requirements.
To avoid this dangerous situation,
none of the four detection zones on the K545
4-way zone module will automatically reset
when any (or all) of them are included in
active “Test Mode” zones.
If independent zone reset control is required
when zones are in test mode, then it will
be necessary to utilise Zone Monitor units
fitted directly on to the detection loops.
K545 4-way Zone Module Datasheet:
Download K545 4-way Zone Module Manual: