TWINFLEX
®
SRP Control Panel Engineering and Commissioning Manual
7
EMC
This equipment when installed is subject to the EMC directive 2004/108/EC. It is also
subject to UK Statutory Instrument 2006 No. 3418.
To maintain EMC compliance, this system must be installed as defined within this manual.
Any deviation from this renders the installer liable for any EMC problems that may occur
either to the equipment or to any other equipment affected by the installation.
The TWINFLEX
®
SRP System
The TWINFLEX
®
SRP system is a single flood zone panel with an intelligent
‘2-wire’ system utilising a
conventional type cabling format. The system is classed as
‘Analogue non-addressable’ due to the
architecture used within the design. All field devices including sounders can be connected to the zone
via a common 2-core screened cable. The devices communicate with the control panel using the
TWINFLEX
®
data protocol.
The TWINFLEX
®
SRP
panel monitors each zone for detector head removal, device fault, ‘End of line’
fault and open or short circuit fault.
Devices or detector heads should not be removed with the zone switched on.
Switch off the zone (at access level 3) before removing any devices or detector
heads from that zone.
Twinflex detector heads must only be removed using the correct head removal
tool, 25-0046-201. Removing detector heads without using the correct tool will
result in damage to the head / detector base.
Every device has an inbuilt ‘End of line’ signal, which may be activated as required. All setting options
are configured using the DIL switches fitted to the device.
Do not use a resistor or capacitor or any other 3
rd
party ‘End of line’ module for
‘End of line’.
The TWINFLEX
®
SRP control panel also provides three monitored outputs that may be configured as
notification (conventional sounder) circuits or 2 notification (conventional sounder) circuits and 1
releasing circuit, four volt free common relays and a volt free common fault relay. There are also five
multifunction latching/non-latching inputs.
The TWINFLEX
®
SRP control panel incorporates an integral power supply unit and requires
2 x 12V
12.0Ah batteries
to provide up to 72 hour standby times depending on system loading (refer to
Technical Data for further information). Standby battery calculations may be made using the
TWINFLEX
®
SRP Panel Battery & Loading Unit Calculation Sheet (document no. 26-1389).
Unlike most conventional fire alarm systems, which require separate pairs of cables for detector zones
and sounder circuits, the TWINFLEX
®
SRP system requires one 2-core screened cable for each zone
to accommodate both detection devices and sounders. Furthermore, sounders are incorporated within
the detector to reduce system components and simplify installation.
The zones can also be programmed to be conventional zones and use conventional detectors.
MCPs must not be used on conventional zones.
Conventional zones cannot distinguish
between an MCP or detection activation so if needed should be connected to a monitored input.
An MCP activation will therefore not initiate an extinguishing release procedure on a conventional zone.
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