E2S EA141 Instruction Manual

1) Introduction
The A141 high level audible warning system is an
effective wide area warning alarm system and
can be used where there is a requirement to
attract attention over large areas and also where
potential high levels of background noise exist.
The system comprises of a central control unit
which is configured to drive an audible horns
containing four driver units.
The control unit produces forty five different alarm
sounds (tones) that are selectable using an
internal dipswitch (see tone table page 3 for
available tones) including a stage 2 and stage 3
alarm option.
Each audible horn is capable of producing a
range of loud warning signals with output levels
at one meter of approximately
depending on tone selected.
Both the control unit and horns are suitable to
mount either indoors or outdoors in a number of
mounting configurations with ingress protection to
IP65.
This particular unit is also fitted with a Battery
backup system with fault monitoring with relay
terminals and a set of remote start and stop
terminals.
2) Operating and Marking
All units have the
requirements and limitations.
Audible Horn Units
Unit Type No.: A141
Operating Temp: -20 to +55C
IP Rating: IP65
Horn weight: 14kg
Control Panel
Unit Type No. A141AC230GB
Input Voltage:
European Safety Systems Ltd.
INSTRUCTION MANUAL
EA141 High Level Audible Warning System / Battery backup
141dB(A)
following operating
Impress House, Mansell Road, Acton, London W3 7QH
115 or 230VAC (90V to 264V AC range)
Operating Temp: -20 to +55C
IP Rating: IP65
Marking:
Control Unit weight : 23kg
3)
Installation Requirements
Always de-energize control unit before removing
cover.
The installation of the units must be in accordance
with any local codes that may apply and should
only be carried out by a competent electrical
engineer who has the necessary training.
3) Power Supply Selection
It is important that a suitable power supply is run
the control unit. The power supply selected must
have the necessary capacity to provide the input
current to the control unit.
The following table shows the input current taken
by the various control unit configurations units:-
AC Unit Type Input
No. Horns Voltage Current I/P Volts
A141AC230GB
115V AC 4.2A
230V AC 1.95A
Table 1: Variants and power requirements
Current levels shown above are for the nominal
input voltage. The input current will vary according
to the voltage input level and the tone selected.
The above table also shows the maximum and
minimum voltages at which the control units can
be operated.
4) Cable Selection
When selecting the cable size consideration must
be given to the input current that the control unit
draws (see table above) and the length of the
cable run.
5) Earthing
AC powered control units must be connected to a
good quality earth. The unit is provided with
internal earthing terminal which is located next to
the power terminal (See figure 2).
Input Range.
90-264V AC