_______________________________________________________________________________________________________________________________
Klaxon Signals Ltd.
Wrigley Street, Oldham, Lancashire UK OL4 1HW [email protected] Tel: +44 (0)161 287 5555
www.klaxonsignals.com Fax: +44 (0)161 287 5511
Document No. Klaxon Syrex IS-XN Issue: A 11-11-05 Sheet 2 of 3
SPECIAL CONDITIONS FOR SAFE USE (as stated in the
EC Type Examination Certificate SIRA 05ATEX2269X)
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
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 Ter and - power supply
Power is supplied to the beacon via ter and - which
have maximum input safety parameters of:
Ui
=
28V
Pi
=
1.2W
Ci = 0
Li = 0
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.
S
yr
ex
IS
-X
N
B
ea
co
n
+
-
2H
z
1
H
z
Fl
as
h
R
at
e
Input Terminals
Flash Rate
Header Pins
'O' Ring Seal
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 anti-
clockwise. 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.
Fit mounting screws
through base
20mm knockouts
Fig 2 Mounting Beacon Base.
