DEVICE WIRING
-
CONTROL PANEL SOUNDER OUTPUT LINE
Conventional sounders are installed on the sounders line and the voltage level applied to their terminals by the control panel controls their
functioning by activating or deactivating them (silencing).
Wireless sounders are controlled in the same exact way through the wireless expander module; this means that this kind of radio outputs
respond indirectly to the voltage level applied by the control panel to the sounders line positive and negative terminals of the expander
module.
In order to connect the module to the sounders line, two types of schemes can be used, depending on the positioning of the expander
module on this line:
-
the expander module is positioned at the beginning or in the middle of the sounders line (sounder devices follow the module on the line or
are positioned before and after it); therefore the sounders line EOL resistor must be fitted externally as is normally done, but not into the
device
’
s terminal blocks:
-
the expander module is positioned at the end of the sounders line (all sounders are positioned before it); therefore the sounders line EOL
resistor must be fitted to the device
’
s terminals and not externally as normally is done.
ZONE ALARM EOL
The zone alarm end of line (EOL) resistor must ALWAYS be installed on the expander; to have its value refer to your control panel
’
s litera-
ture.
CHECKING THE POSITIONING OF THE ELECTICAL BRIDGES
In order to function, the wireless expander module needs to have two electrical bridges fitted on the pins on its PCB in the way illustrated in
the following picture:
VISUAL LED INDICATOR
The conventional expander module is equipped with a three
-
colour LED (red,
green and amber) that provides visual indication for power supply conditions;
this indicator is positioned on the internal PCB of the device and it
’
s light is
visible through a slit on the device
’
s cover.
The table 1 illustrates the possible LED visual signals and their meaning.
PROGRAMMING THE WIRELESS SUB
-
SYSTEM
The wireless sub
-
system is created and programmed through the use of a
“
Wirelex Fire
”
program installed on a personal computer that is
connected via RS232 serial port to the wireless conventional system expander module.
Picture 14
-
Zone alarm EOL
installation terminal blocks
on the expander device
Picture 13
-
Sounders
line wiring (sounders line
EOL resistor inside of
the device)
Picture 12
-
Sounders
line wiring (sounders line
EOL resistor outside of
the device)
Picture 15
-
Electrical
bridges correct positioning
TESTING THE WIRELESS CONVENTIONAL SYSTEM EXPANDER MODULE
Testing needs the fire security system to be wired, programmed and armed.
Trigger an alarm on the wireless sub
-
system: as a consequence the conventional control panel must set into alarm.
After the test reset the whole system from the control panel.
SEALING THE DEVICE WITH ITS COVER
After testing you can install the device
’
s cover onto the module and, safely and securely, close it by using the screws provided.
WARNINGS AND LIMITATIONS
Our devices use high quality electronic components and plastic materials that are highly resistant to environmen-
tal deterioration. However, after 10 years of continuous operation, it is advisable to replace the devices in order to
minimize the risk of reduced performance caused by external factors. Ensure that this device is only used with
compatible control panels. Detection systems must be checked, serviced and maintained on a regular basis to
confirm correct operation.
Smoke sensors may respond differently to various kinds of smoke particles, thus application advice should be
sought for special risks. Sensors cannot respond correctly if barriers exist between them and the fire location and
may be affected by special environmental conditions.
Refer to and follow national codes of practice and other internationally recognized fire engineering standards.
Appropriate risk assessment should be carried out initially to determine correct design criteria and updated
periodically.
WARRANTY
All devices are supplied with the benefit of a limited 3 years warranty relating to faulty materials or manufacturing
defects, effective from the production date indicated on each product.
This warranty is invalidated by mechanical or electrical damage caused in the field by incorrect handling or
usage.
Product must be returned via your authorized supplier for repair or replacement together with full information on
any problem identified.
Full details on our warranty and product return policy can be obtained upon request.
Device Status
Green LED
Red LED
Normal
Continuous glowing
-
Primary power supply
fault
-
Continuous glowing
Backup power supply
fault
Sequential green
-
red blinks
Table 1
STERLING SAFETY SYSTEMS
-
Unit B12a, Holly Farm Business Park, Honiley, Warwickshire,
CV81NP
www.sterlingsafety.co.uk
L20
-
SGCWE
-
1400 (vA.3)
STERLING SAFETY SY-
STEMS
-
Unit B12a, Holly
Farm Business Park, Honiley,
Warwickshire, CV81NP
11
HF
-
20
-
017CPR
EN 54
-
25:2008
EN 54
-
18:2005
HFW
-
CEM
-
02
For use in compatible fire
detection and alarm system
2831
IMPORTANT: Please note that with this wiring
arrangement, if a fault occurs on the wireless
sub
-
system, the remaining sounders line after
the expander may be isolated until the fault has
been cleared. This will apply unless each
sounder on the sounders line is equipped with
a Schottky diode that the panel can use for
continuity purposes.
Please refer to your applicable codes of prac-
tice and to your conventional control panel
documentation.