Quadnet Installation Instructions
17
Network
Topology and cable spec
The Quadnet network may be connected as shown below. The network may comprise of Control panels or
repeater panels as required, up to a maximum of 32 nodes. In addition to the connections shown above,
each panel will require a 230V AC supply and the power supply arrangements relevant to that panel.
Any network port at a Control Panel may be connected to any other network port at any other Control
Panel. A list of these connections must be noted during termination as they will need to be configured t
each Control Panel for correct operation.
The Network connection circuit may be installed as a radial, star, ring or mesh network, with a maximum
cable length of up to 1 km between network nodes. It is recommended that the ring or mesh configurations
are used to ensure system integrity in the event of a cable failure.
All system wiring should be installed to comply with BS 5839: Pt1: 2002: Amendment 2: 2008 and BS 7671
(wiring regulations), along with any other standards relevant to the area or type of installation. A cable
complying with the BS 5839: Pt1: 2002: Amendment 2: 2008: Category 1 (cables required to operate for
prolonged periods during fire conditions) is required. This must be a 2-core 1.5mm
2
screened fire resistant
cable (ie. MICC, FP200, Firetuff, Firecell, Lifeline or equivalent).
The network circuit should be installed as a loop with a maximum length of up to 1 km between network
nodes (panels etc). Radial circuits may be utilised, but the system integrity and fault tolerance will be lower.
In order to protect against possible data corruption it is important ensure the following points are adhered
to:
1. The cable
screen between each network node (panel/repeater) must be connected to
earth/ground at one end only
using the terminals provided. Ensure that the end that is not
connected is safely terminated in a connector block to avoid unwanted shorting to any other
point.
2. The cable
screen between each panel/repeater must be connected to earth/ground at
one end only
using the terminals provided. Ensure the end that is not connected is safely
terminated in a connector block to avoid unwanted shorting to any other point.
3. Do not use a 4-core cable as a loop
feed & return
due to the possibility of data corruption. It is
essential that two 2-core cables are used if this is required.
