European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. D190-00-201-IS
8) Installation Requirements
8.1 Safe Installation Requirements
Warning High voltage may be present,
risk of electric shock.
DO NOT open when energised,
disconnect power before opening.
The sounder must only be installed by suitably qualified personnel in
accordance with the latest issues of the relevant standards.
8.2 Cable Selection and Connections
When selectingthe cable size,consideration must be given to the input
current that each unit draws (see table 1), the number of sounders on
the line and the length of the cable runs. The cable size selected must
have the necessary capacity to provide the input current to all the
sounders connected to the line.
A single wire with a cross sectional area of up to 2.5mm²/ AWG14 can
be connected to each terminal way or if an input and output wire is
required two wires can be connected to each terminal way when
crimped with a ferrule. If more than one wire is fitted into a terminal a
ferrule should be used to secure the wires. When connecting wires to
the terminals greatcare should be taken to dress the wire so that when
the cover is inserted into the chamber the wires do not exert excess
pressure on the terminal blocks.
D1xL2 and D1xL1 8 ohm and 16 ohm low impedance loudspeakers
have dual input terminals on the PCB assembly for input and output
wiring. A cable of up to 4.0mm² can be connected to each terminal.
Wire insulation needs to be stripped 8mm. Wires may be fitted
securely with crimped ferrules. Terminal screws need to be tightened
down with a tightening torque of 0.45 Nm / 3.5 Lb-in.
Line In: 0.2 - 2.5mm2/ AWG24 - AWG14
Low Impedance: 0.2 - 4mm2/ AWG24 - AWG12
Figure 3: Wire Preparation.
When connecting wires to the terminals great care should be taken to
dress the wires so that when the cover is inserted into the chamber
the wires do not exert excess pressure on the terminal blocks. This is
particularly important when using cables with large cross-sectional
areas such as 2.5mm².
8.3 Earthing
Figure 4: Earth Locations.
8.4 Cable Glands, Blanking Elements & Adapters
Ingress Protection
Adapters
The D1x Loudspeaker range can be supplied with the following types
of adapters:
M20 to M25
It is important to note that stopping plugs cannot be fitted onto
adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated and certified.
9) Wiring
The cable connections are made into the terminal blocks on the PCB
assembly located in the explosionproof enclosure. See section 7.4 of
this manual for access to the explosionproof enclosure.
Refer to Wiring Schematic D190-06-201 Configs. 1a -2c for Line in
Loudspeakers and Config. 3 for Low impedance wiring details.
Internal Earth
Marked with G
