E2S A141 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.
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
Control Panel
Unit Type No. A141xxxxxG
variant chosen see table 1)
Input Voltage:
European Safety Systems Ltd.
Document No. D161-00-001-IS_Issue_C 12-02-13
INSTRUCTION MANUAL
A141 High Level Audible Warning System
141dB(A)
following operating
(dependent on
Impress House, Mansell Road, Acton, London W3 7QH
Sheet 1 of 5
24V DC (18V to 30V DC range)
115 or 230VAC (90V to 264V AC range)
Operating Temp: -20 to +55C
IP Rating: IP65
Marking:
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:-
DC Unit Type Input
No. Horns Voltage Current I/P Volts
A141DC24G
24V DC 13.2A
AC Unit Type Input
No. Horns Voltage Current I/P Volts
A141AC230G
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.
sales@e2s.com
www.e2s.com
Input Range.
18-30V DC
Input Range.
90-264V AC
Tel: +44 (0)208 743 8880
Fax: +44 (0)208 740 4200