_______________________________________________________________________________________________________________________________
European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH [email protected] Tel: +44 (0)20 8743 8880
www.e2s.com Fax: +44 (0)20 8740 4200
Document No. IS 5002 Issue G 25-01-2018 Sheet 2 of 4
SPECIAL CONDITIONS FOR SAFE USE (as stated in the
EC Type Examination Certificate SIRA 05ATEX2084X)
Conditions for IS-mBl 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 enclosure is non-conducting and may generate an
ignition-capable level of electrosatic charges under certain
extreme conditions. The user should ensure that the
equipment is not installed in a location where it may be
subjected to external conditions that might cause a build-
up of electrostatic charges on non-conducting surfaces,
additionally, cleaning of the equipment should be done
only with a damp cloth.
4.2 Zones, Gas Groups and T Rating
The IS-mB1 LED beacon has been certified Ex ia IIC T4 Ga.
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
Ii
=
660mA
Pi
=
1.2W
Ci = 0
Li = 0
IS-mB1 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, 660mA and 1,2W
Up to three IS-mB1 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.
IS
-m
B
1
B
e
a
c
o
n
Flash Rate
Header Pins
Input Terminals
+
-
'O' Ring Seal
2
H
z
1
H
z
F
la
s
h
R
a
te
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.
IS-mB1 beacons should only be installed by trained
competent personnel.
5.1 Mounting
The IS-mB1 minialite 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.
Summary of Contents for IS-mB1 Minialite
Page 5: ......
