Klaxon IS-XN User Manual

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The Syrex IS

-XN beacon is CE marked for

European EMC Directive 89/336/EEC

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compliance with the European Explosive

Atmospheres Directive 94/9/EC and the

1. INTRODUCTION

The Syrex IS-XN is an ATEX certified intrinsically safe
beacon which will produce a visual warning in a hazardous
area. Red, Amber, Green and Blue output models are
available.

2. DESCRIPTION

The device will start to flash when power is applied to
terminals + and -. The beacon has two flash rates one double
flash per second and two double flashes per second. The
flash rate is selected by setting an internal pin header. The
unit is factory set to produce two double flashes per second.

3. SUPPLY VOLTAGE

The Syrex IS-XN beacon has been designed to operate in a
hazardous area via a 28V 300 ohm ATEX certified Zener
barrier or galvanic isolator. The beacon may be tested or
used in safe areas without a Zener barrier or galvanic
isolator, but at supply voltages above 16V the internal current
limit will function and the brightness may be reduced. The
beacon should not be continuously operated without a barrier
or isolator with a supply voltage greater than 16V.

4. INTRINSIC SAFETY CERTIFICATION

4.1 ATEX certificate

The Syrex IS-XN beacon complies with the following
standards:-

EN50014 : 1997 + A1 and A2
EN50020 : 2002
EN50284 : 1999

II 1G EEx ia IIC T4 (-40ºC <= Ta <= +60ºC)

The EC-Type Examination Certificate SIRA 05ATEX2269X
has been issued by the Notified Body Sira. This confirms
compliance with the European ATEX Directive 94/9/EC for
Group II, Category 1G equipment. The beacon carries the
Community Mark and subject to local codes of practice, may
be installed in any of the EEA member countries.

_______________________________________________________________________________________________________________________________
Klaxon Signals Ltd. Wrigley Street, Oldham, Lancashire UK OL4 1HW [e-mail] Tel: [phone]

www.klaxonsignals.com Fax: [phone]
Document No. Klaxon Syrex IS-XN Issue: A 11-11-05 Sheet 1 of 3

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This instruction sheet describes installations which conform
to BS EN 60079:Part14:2003 Electrical Installation in
Hazardous Areas. When designing systems for installation
outside the UK, the local Code of Practice should be
consulted.

Enclosure: ABS Plastic
Lens: Polycarbonate

1) The certification marking is as follows:

Syrex IS-XN Beacon

II 1G EEx ia IIC T4 (-40ºC <=Ta<= +60°C)

Ui = 28V Pi = 1.2W

SIRA 05ATEX2269X

WARNING:

Klaxon Signals Ltd.

2) The equipment may be used in zones 0, 1 and 2
with flammable gases and vapours with apparatus
groups IIA, IIB & IIC and with temperature classes
T1, T2, T3 and T4.

3) The equipment is only certified for use in ambient
temperatures in the range -40oC to +60oC and
should not be used outside this range.

4) The certificate number has an ‘X’ suffix, which
indicates that the certificate contains one of more
special conditions for safe use. Those installing or
inspecting the equipment should refer to this section
of the certificate.

5) The equipment has not been assessed as a safety­related device (as referred to by Directive 94/9/EC
Annex II, clause 1.5).

6) Installation of this equipment shall be carried out by
suitably-trained personnel in accordance with the
applicable code of practice.

7) Repair of this equipment shall only be carried out by
the manufacturer or in accordance with the
applicable code of practice.

8) The certification of this equipment relies on the
following materials used in its construction:

If the equipment is likely to come into contact with
aggressive substances, then it is the responsibility of
the user to take suitable precautions that prevent it
from being adversely affected, thus ensuring that the
type of protection is not compromised.

“Aggressive substances” - e.g. acidic liquids or
gases that may attack metals, or solvents that may
affect polymeric materials.

“Suitable precautions” - e.g. regular checks as part
of routine inspections or establishing from the
material’s data sheet that it is resistant to specific
chemicals.

Ci = 0 Li = 0

Year / Serial No. 05 / 6MB000001

TO AVOID A POSSIBLE ELECTROSTATIC

CHARGE ONLY CLEAN WITH A DAMP CLOTH

Oldham OL4 1HW. UK.
www.klaxonsignals.com

0518

SPECIAL CONDITIONS FOR SAFE USE (as stated in the
EC Type Examination Certificate SIRA 05ATEX2269X)

'O' Ring Seal

Conditions for Syrex IS-XN Beacon

The equipment has an ingress protection rating of IP65.
However, if it has been supplied without cable entry devices,
then the user shall ensure that the devices that are fitted will
provide an ingress protection that is appropriate to the
environment in which it is installed i.e. IP20 or better. If only

Input Terminals

Flash Rate
Header Pins

Syrex IS-XN

Beacon

+ -

2Hz 1Hz Flash Rate

one of the two cable entries are used, then the unused entry
'knockout' shall be left intact or fitted with a blanking device
that ensures ingress protection appropriate to the
environment in which it is installed i.e. IP20 or better.

The equipment shall not be directly installed in any process
where its enclosure might be electro-statically charged by the
rapid flow of a non-conductive media.

4.2 Zones, Gas Groups and T Rating
The Syrex IS-XN beacon has been certified EEx ia IIC T4.
When connected to an approved system it may be installed
in:

Zone 0 explosive gas air mixture

continuously present.

Zone 1 explosive gas air mixture likely to occur in

normal operation.

Zone 2 explosive gas air mixture not likely to occur,

and if it does, it will only exist for a short time.

Be used with gases in groups:

Group A propane
Group B ethylene

Group C hydrogen

Having a temperature classification of:

T1 450ºC
T2 300ºC
T3 200ºC
T4 135ºC

4.3 Terminals + and - power supply

Power is supplied to the beacon via terminals + and - which
have maximum input safety parameters of:

Ui = 28V

Fig 1 Location of field terminals and controls.

5. INSTALLATION

In addition to the certification requirements shown in section

4.2, the environmental conditions must be within the limits
shown on the product specification. The beacon enclosure
provides IP65 protection and is suitable for installation in an
exterior location if an appropriate sealed cable entry is used.
Syrex IS-XN beacons should only be installed by trained
competent personnel.

5.1 Mounting
The Syrex IS-XN beacon may be secured to any flat surface
by inserting two mounting screws through the back of the
round base (see figure 2). The enclosure provides IP65
protection and is suitable for installation in exterior locations
provided that the area around the two mounting screws
through the back of the base moulding has been sealed and
that suitable cable glands with the required IP rating have
been used. The lens should be aimed towards the area
where maximum visibility is required.

5.2 Installation procedure

a. Unscrew the beacon unit security screw and remove

the beacon section from the base by turning it anti­clockwise. Ensure that the ‘O’ ring seal remains in
place.

b. Remove the required 20mm knockout section(s)

depending on system wiring and mount the base to a
flat surface by inserting two screws through the back
of the base.

c. Fit the required number of 20mm cable glands or

conduit entries into the base and connect the field
wiring to the appropriate beacon terminals as shown
in section 6 and Fig 1 of this manual.

d. Check that the ‘O’ ring seal is correctly located on the

beacon section (see Fig. 1) and insert the beacon
section into the base. Push it fully home and turn it
clockwise to align the mouldings before tightening the
security screw.

Pi = 1.2W

Ci = 0 Li = 0

Fit mounting screws
through base

20mm knockouts

Syrex IS-XN beacons may be powered from ATEX certified
Zener barriers or galvanic isolators certified by an EC
Approved Body which have output parameters equal to or
less than 28V and 1,2W

Up to three Syrex IS-XN beacons can be connected in
parallel and be powered from a common barrier or isolator.
Parallel connection of beacons will significantly reduce the
brightness of each device.

The maximum permitted cable parameters defined by the
barrier or isolator certificate must not be exceeded.

_______________________________________________________________________________________________________________________________
Klaxon Signals Ltd. Wrigley Street, Oldham, Lancashire UK OL4 1HW [e-mail] Tel: [phone]

www.klaxonsignals.com Fax: [phone]
Document No. Klaxon Syrex IS-XN Issue: A 11-11-05 Sheet 2 of 3

Fig 2 Mounting Beacon Base.