E2S Minialert IS-mC1 User manual

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: [phone]
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 1 of 7
INSTRUCTION MANUAL
IS-mC1 Minialert
Intrinsically Safe Round Combined Unit
1) Introduction
The IS-mC1 minialert is an ATEX, IECEx and UKEX certified
intrinsically safe combined sounder/beacon unit which
produces both a loud audio warning and a visual warning and
can be installed in a hazardous area. The sounder section
has forty-nine first stage alarm sounds that can be selected
by internal switches and each one can be externally changed
to a second or third stage alarm sound. The beacon section
can be set internally for a flash rate of either 1Hz or 2Hz. The
combined unit sounder and beacon can be operated
simultaneously from one barrier or from separate barriers if
independent operation is required. The IS-mC1 Combined
Unit can be used in all gas groups IIA IIB and IIC.
2) Description
Fig 1 shows a simplified block diagram of an IS-mC1
minialert sounder section. The device operates immediately
power is applied to the sounder + and – terminals which are
duplicated to allow a second sounder to be connected in
parallel, or for an end of line monitoring resistor to be
installed. The output tone is defined by the positions of the
six internal switches and this tone can be changed to a
second or third stage alarm tone by connecting terminals S2
or S3 to 0V. The tone generator is crystal controlled to ensure
that when two sounders connected to the same power supply
are started at the same time the output tones remain
synchronised.
3) Supply Voltage
The IS-mC1 minialert unit has been designed to operate in a
hazardous area from a 24V dc supply via 28V 93mA resistive
ATEX and IECEx certified Zener Barriers or Galvanic
Isolators. The unit 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
therefore it is recommended that they are not operated
continuously with a direct supply greater than 16V.
IS-mC1 Sounder Section
Tone Generator
Tone Selection Switches
Volume Control
_
_
S2
S3
+
+
Fig 1 Simplified block diagram
4) Intrinsic Safety Certification
4.1 ATEX certificate
The IS-mC1 combined minialert unit complies with the
following standards:-
EN IEC 60079-0:2018
EN60079-11:2012
IEC60079-26:2014
The EC-Type Examination Certificate SIRA 05ATEX2084X
has been issued by the Notified Body Sira. This confirms
compliance with the European ATEX Directive 2014/34/EU
for Group II, Category 1G equipment. The sounder carries
the Community Mark and subject to local codes of practice,
may be installed in any of the EEA member countries. This
instruction sheet describes installations which conform to
EN60079:Part14:2008 Electrical Installation in Hazardous
Areas. When designing systems for installation outside the
UK, the local Code of Practice should be consulted.
1) The certification marking is as follows:
e
2S
european safety systems ltd. London W3 7QH UK
WARNING:
TO AVOID A POSSIBLE ELECTROSTATIC
CHARGE ONLY CLEAN WITH A DAMP CLOTH
IS-mC1
Combined Sounder / Beacon
II 1G Ex ia IIC T4 Ga (-40ºC <=Ta<= +60°C)
2813
SIRA 05ATEX2084X
Year / Ser. No.
09 / 1MCR000001
Sounder Terminal + w.r.t. Terminal -
Ui = 28V Ii = 93mA Pi = 660mW Ci = 0 Li = 0
Sounder Terminals S2&S3 w.r.t. Terminal -
Ui = 28V Ii = 0mA
www.e2s.com
Beacon Terminal + w.r.t. Terminal -
Ui = 28V Ii = 660mA Pi = 1.2W Ci = 0 Li = 0
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.
The IS-mC1 combined unit is CE
marked for compliance with the
European Explosive Atmospheres
2014/34/EU and the European EMC
Directive 2014/30/EU
II 1G Ex ia IIC T4 Ga (-40ºC <= Ta <= +60ºC)

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: [phone]
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 2 of 7
5) The equipment has not been assessed as a safety-
related device (as referred to by Directive
2014/34/EU 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:
Enclosure: ABS Plastic
Lens: Polycarbonate
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.
SPECIAL CONDITIONS FOR SAFE USE (as stated in the
EC Type Examination Certificate SIRA 05ATEX2084X)
Conditions for IS-mCl Combined Sounder / 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 total capacitance connected to sounder terminals + wrt -
(i.e. the capacitance of the cable plus any other capacitance)
shall not exceed 83nF.
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.
The equipment shall only be supplied via Sounder Terminals
+ w.r.t. Sounder Terminals - from a barrier having a
maximum open circuit voltage Uo that is < 28V and a
maximum short circuit current Io that is < 93mA, where Io is
resistively limited. The barrier shall be ATEX certified by a
notified body.
If not already fitted optional internal wiring connections
between Sounder Terminals + / - and Beacon Terminals + / -
may be fitted by the user. The wiring used for such
connections shall have a minimum radial thickness of
insulation of 0.5mm.
4.2 Zones, Gas Groups and Temperature Classification
The IS-mC1 minialert unit 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 Sounder + and - Terminals
Power is supplied to the sounder section via the sounder
input terminals + and – on the sounder PCB (see Fig 2) and
the terminals have the following input safety parameters:
Ui = 28V
Ii = 93mA
Pi = 660mW
Ci = 0 Li = 0
The IS-mC1 combined sounder section may be powered from
an ATEX certified Zener barrier or galvanic isolator which
have output parameters equal to or less than 28V, 93mA and
660mW, where Io is resistively limited. The cable parameters
stated on the selected Zener barrier or galvanic isolator
certificate must be observed.
4.4 Sounder S2 and S3 Terminals
When terminals S2 or S3 are connected to 0V (- terminal) the
sounder output tone changes to the second or third stage
alarm respectively. The input safety parameters for these
terminals are:
Ui = 28V
Ii = 0mA
Because the permitted input current is zero, these terminals
may only be connected to a diode return barrier, an
intrinsically safe relay or a galvanic isolator, all of which must
have been certified by an EC Notified Body. Only diode
return barriers with a voltage drop of less than 0.9V may be
used. Alternatively, these terminals may be connected
directly to a mechanically activated switch within the
hazardous area.

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European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: [phone]
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 3 of 7
4.5 Beacon + and - Terminals
Power is supplied to the beacon section via the beacon input
terminals + and – on the beacon PCB (see Fig 2) and the
terminals have the following input safety parameters:
Ui = 28V
Ii = 660mA
Pi = 1.2W
Ci = 0 Li = 0
The IS-mC1 combined beacon section may be powered from
any 28V, 660mA 1.2W ATEX certified Zener barrier or
galvanic isolator. The cable parameters stated on the
selected Zener barrier or galvanic isolator certificate must be
observed.
1 2 3 4 5 6
+ + - - S2 S3
IS-mC1 Sounder
Terminals
Tone Setting
Switches 1-6
Volume
Control
Sounder Input
Terminals
IS-mC1
Beacon
Terminals
+ -
2Hz 1Hz Flash Rate
Beacon Input
Terminals
Flash Rate
Header Pins
'O' Ring Seal
Fig 2 Location of field terminals and controls.
4.6 Other intrinsic safety certifications
Please contact European Safety Systems Ltd. for details of
non-European intrinsic safety approvals.
5) Installation
The IS-mC1 minialert combined unit should only be installed
by trained competent personnel.
5.1 Mounting
The IS-mC1 minialert combined unit may be secured to any
flat surface by inserting two mounting screws through the
back of the round base (see figure 3). 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.
5.2 Installation procedure
a. Unscrew the combined unit security screw and
remove the sounder/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 sounder terminals as shown
in section 6 and fig 2 of this manual. The power supply
terminals + and - are duplicated so that sounders may
be connected in parallel, or an end of line monitoring
resistor may be fitted.
d. Select the required sounder output tone by positioning
the six switches as shown in Table 1 and Fig 2.
e. Apply power to the sounder and adjust the internal
volume control to provide the required sound level.
f. Check that the ‘O’ ring seal is correctly located on the
sounder/beacon section (see Fig. 2) and insert the
sounder/beacon section into the base. Push it fully
home and turn it clockwise to align the mouldings
before tightening the security screw.
g.
Fit mounting screws
through base
20mm knockouts
Fig 3 Mounting Combined Unit Base.
6) Electrical System Design For Installation In
Hazardous Areas Using Zener Barriers
6.1 Sounder single stage alarm
If the control switch is in the positive supply, or the power
supply is being turned on and off, only a single channel Zener
barrier is required as shown in Fig 4. This circuit may also be
used if the sounder is being controlled by a mechanically
activated switch on the hazardous area side of the barrier.
Safe Area
Hazardous Area
Sounder
Terminals
+
-
IS-mC1
Combined Unit
0V
+
Power
Supply
Barrier
On/Off
28V 93mA
Positive
Fig 4 Sounder single stage alarm using single channel
barrier.
If the control switch must be in the negative supply, the circuit
shown in Fig 5 may be used. Any diode return barrier certified
Ex ia by a EC Notified Body may be used, providing its
voltage drop is less than 0.9V.

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: [phone]
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 4 of 7
Safe Area
Hazardous Area
Sounder
Terminals
IS-mC1
Combined Unit
-
+
0V
+
Power
Supply
Diode Return
Barrier
Barrier
On/Off
28V 93mA
Positive
Fig 5 Sounder single stage alarm using two channel barrier.
6.2 Sounder multi-stage alarm
Connecting terminal S2 to 0V activates the second stage
alarm, and similarly terminal S3 for the third stage alarm. Fig
6 shows how the diode return barriers may be used. If only
two stages of alarm are required the third stage barrier
should be omitted, the 28V 93mA barrier and the single diode
return channel may then be contained in one package.
S3
S2
IS-mC1
Combined Unit
Sounder
Terminals
-
+
0V
+
Power
Supply
Diode Return
Barrier
Diode Return
Barrier
Barrier
3rd Stage
2nd Stage
On/Off
28V 93mA
Positive
Hazardous Area Safe Area
Fig 6 Sounder multi stage alarm using Zener barriers.
6.3 Beacon operation
The beacon can be operated from the same Zener barrier
being used to power the sounder (see Fig 7) or from a
separate barrier if the sounder and beacon need to operate
independently (see Fig 8). A Diode return barrier can be used
if the sounder second and third stage tones are required.
NOTE: If the beacon is operated from the same barrier as the
sounder then the sounder and beacon boards must be
connected together as shown in Fig 7 using connecting wires
that have a minimum radial thickness of insulation of 0.5mm.
Also the barrier used must meet the requirements for the
sounder section (see section 4.3).
Hazardous Area
IS-mC1
Beacon
-
+
IS-mC1
Sounder
+
-
-
+
0V
+
Power
Supply
Safe Area
Barrier
On/Off
28V 93mA
Positive
Fig 7 Combined Unit wired for simultaneous operation using
one Zener barrier.
Sounder
Power
Supply
+
0V
Barrier
On/Off
IS-mC1
Sounder
+
-
28V 93mA
Positive
Hazardous Area Safe Area
IS-mC1
Beacon +
On/Off
Barrier
Beacon
Power
Supply
0V
+
-
28V 1.2W
Positive
Fig 8 Combined Unit wired for independent operation using
separate Zener barriers.
7) Electrical System Design For Installation In
Hazardous Areas Using Galvanic Isolators
Galvanic isolators do not require a high integrity earth
connection. For small systems where a high integrity earth is
not already available, the use of galvanic isolators often
reduces the overall installation cost and simplifies design.
7.1 Sounder single stage alarm
The IS-mC1 minialert combined unit may be powered by any
galvanic isolator having output parameters within the limits
specified in section 4.3, which has been certified Ex ia by an
EC Notified Body. The combined unit may be controlled by
turning the galvanic isolator on and off, or by a mechanically
activated switch on the hazardous area side of the isolator.
Safe Area
Hazardous Area
IS-mC1
Sounder
+
--
+
Galvanic
Isolator
Power
Fig 9 Sounder single stage alarm using galvanic isolator.
6.2 Beacon operation
The beacon can be operated from the same isolator being
used to power the sounder (see Fig 10) or from a separate
isolator if the sounder and beacon need to operate
independently (see Fig 11).
NOTE: If the beacon is operated from the same isolator as
the sounder then the sounder and beacon boards must be
connected together as shown in Fig 11 using connecting
wires that have a minimum radial thickness of insulation of
0.5mm. Also the isolator used must meet the requirements
for the sounder section (see section 4.3).

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: [phone]
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 5 of 7
Tone
Number Tone Description
Switch
Settings
1 2 3 4 5 6
Second
Stage
Alarm
Third
Stage
alarm
Tone 1
Tone 2
Tone 3
Tone 4
Tone 5
Tone 6
Tone 7
Tone 8
Tone 9
Tone 10
Tone 11
Tone 12
Tone 13
Tone 14
Tone 15
Tone 16
Tone 17
Tone 18
Tone 19
Tone 20
Tone 21
Tone 22
Tone 23
Tone 24
Tone 25
Tone 26
Tone 27
Tone 28
Tone 29
Tone 30
Tone 31
Tone 32
Tone 33
Tone 34
Tone 35
Tone 36
Tone 37
Tone 38
Tone 39
Tone 40
Tone 41
Tone 42
Tone 43
Tone 44
Tone 45
Tone 46
Tone 47
Tone 48
Tone 49
Continuous 340Hz
Alternating 800/1000Hz @ 0.25s intervals
Slow whoop 500/1200Hz @ 0.3Hz with 0.5s gap repeated
Sweeping 500/1000Hz @ 1Hz
Continuous 2400Hz
Sweeping 2400/2900Hz @ 7Hz
Sweeping 2400/2900Hz @ 1Hz
Siren 500/1200/500Hz @ 0.3Hz
Sawtooth 1200/500Hz @ 1Hz - D.I.N.
Alternating 2400/2900Hz @ 2Hz
Intermittent 1000Hz @ 1Hz
Alternating 800/1000Hz @ 0.875Hz
Intermittent 2400Hz @ 1Hz
Intermittent 800Hz 0.25s ON, 1s OFF
Continuous 800Hz
Intermittent 660Hz 150Ns ON, 150ms OFF
Alternating 544Hz (100ms) / 440Hz (400ms) – NFS 32-001
Intermittent 660Hz 1.8s ON, 1.8s OFF
Sweep 1400Hz to1600Hz up 1s 1600Hz to 1400Hz down 0.5s
Continuous 660Hz
Alternating 554/440Hz @ 1Hz
Intermittent 544Hz @ 0.875Hz
Intermittent 800Hz @ 2Hz
Sweeping 800/1000Hz @ 50Hz
Sweeping 2400/2900Hz @ 50Hz
Simulated bell
Continuous 554Hz
Continuous 440Hz
Sweeping 800/1000Hz @ 7Hz
Continuous 300Hz
Sweeping 660/1200 @ 1Hz
Two Tone Chime
Intermittent 745Hz
Alternating 1000/2000Hz @ 0.5s – Singapore
420Hz @ 0.625s - Australian Alert
500-1200Hz 3.75s / 0.25s - Australian Evacuate
Continuous 1000Hz
Continuous 2000Hz
Intermittent 800Hz 0.25s ON 1s OFF
Alternating 544Hz (100ms) / 440Hz (400ms) – NFS 32-001
Motor Siren – Slow rise to 1200Hz
Motor Siren – Slow rise to 800Hz
Continuous 1200Hz
Motor Siren – Slow rise to 2400Hz
Intermittent 1000Hz 1s ON, 1s OFF
Sawtooth 1200/500Hz @ 1Hz - D.I.N. (PFEER P.T.A.P)
Intermittent 1000Hz 1s ON, 1s OFF – PFEER General Alarm
420Hz @ 0.625s - Australian Alert
500-1200Hz 3.75s / 0.25s - Australian Evacuate
0 0 0 0 0 0
1 0 0 0 0 0
0 1 0 0 0 0
1 1 0 0 0 0
0 0 1 0 0 0
1 0 1 0 0 0
0 1 1 0 0 0
1 1 1 0 0 0
0 0 0 1 0 0
1 0 0 1 0 0
0 1 0 1 0 0
1 1 0 1 0 0
0 0 1 1 0 0
1 0 1 1 0 0
0 1 1 1 0 0
1 1 1 1 0 0
0 0 0 0 1 0
1 0 0 0 1 0
0 1 0 0 1 0
1 1 0 0 1 0
0 0 1 0 1 0
1 0 1 0 1 0
0 1 1 0 1 0
1 1 1 0 1 0
0 0 0 1 1 0
1 0 0 1 1 0
0 1 0 1 1 0
1 1 0 1 1 0
0 0 1 1 1 0
1 0 1 1 1 0
0 1 1 1 1 0
1 1 1 1 1 0
0 0 0 0 0 1
1 0 0 0 0 1
0 1 0 0 0 1
1 1 0 0 0 1
0 0 1 0 0 1
1 0 1 0 0 1
0 1 1 0 0 1
1 1 1 0 0 1
0 0 0 1 0 1
1 0 0 1 0 1
0 1 0 1 0 1
1 1 0 1 0 1
0 0 1 1 0 1
1 0 1 1 0 1
0 1 1 1 0 1
1 1 1 1 0 1
0 0 0 0 1 1
Tone 2
Tone 17
Tone 2
Tone 6
Tone 3
Tone 7
Tone 10
Tone 2
Tone 15
Tone 7
Tone 2
Tone 4
Tone 15
Tone 4
Tone 2
Tone 18
Tone 2
Tone 2
Tone 2
Tone 2
Tone 2
Tone 2
Tone 6
Tone 29
Tone 29
Tone 2
Tone 26
Tone 2
Tone 7
Tone 2
Tone 26
Tone 26
Tone 2
Tone 38
Tone 36
Tone 35
Tone 9
Tone 34
Tone 23
Tone 31
Tone 2
Tone 2
Tone 2
Tone 2
Tone 38
Tone 47
Tone 46
Tone 49
Tone 26
Tone 5
Tone 5
Tone 5
Tone 5
Tone 20
Tone 5
Tone 5
Tone 5
Tone 2
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 27
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 15
Tone 5
Tone 5
Tone 5
Tone 5
Tone 5
Tone 15
Tone 5
Tone 45
Tone 5
Tone 5
Tone 45
Tone 45
Tone 17
Tone 27
Tone 5
Tone 5
Tone 5
Tone 5
Tone 34
Tone 37
Tone 37
Tone 5
Tone 37
Tone Selection – To select the required first stage tone set the tone switches 1 to 6 (see
Fig 2) to the tone setting shown in the table below. The table also shows which 2nd and 3rd
stage tones are available for use with the selected first stage tone if more than one tone
output stage is required.

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European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: [phone]
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 6 of 7
Hazardous Area
IS-mC1
Beacon
-
+
IS-mC1
Sounder
+
-
+
-
Safe Area
-
+
Galvanic
Isolator
Power
Fig 10 Combined Unit wired for simultaneous operation
using one isolator.
Hazardous Area
IS-mC1
Beacon
-
+
IS-mC1
Sounder
+
-
Galvanic
Isolator
-
+
Safe Area
Galvanic
Isolator
-
+
Power
Power
Fig 11 Combined Unit wired for independent operation using
separate isolators
8) Cable Parameters
The maximum permitted cable parameters are as specified
on the certificate of the Zener barrier or galvanic isolator that
has been selected for the installation. Normally the limits are
not restrictive, but care should be taken not to exceed a
capacitive limit of 83nF for installations when very long cables
are used.
9) Volume Control
The output level of the IS-mC1 Combined Sounder / Beacon
can be set by adjusting the volume control potentiometer (see
Fig 2).
10) Maintenance
The sounder should be regularly inspected to ensure that it
has not been damaged. Frequency of inspection depends
upon environmental conditions, but initially we recommend
that this should be done annually.
No attempt should be made to repair a faulty ISmA1
sounder. Suspect sounders must be returned to
European Safety Systems Ltd. or to your local agent for
repair.
11) Guarantee
Sounders that fail within the guarantee period should be
returned to European safety Systems Ltd. It is helpful if a
brief description of the fault symptoms is provided.
12) Customer Comments
European Safety Systems Ltd. is always pleased to receive
comments from customers about our products and services.
All communications are acknowledged and whenever
possible, suggestions are implemented.

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: [phone]
Document No. D251-00-601-IS Issue 1 20-09-2022 Sheet 7 of 7
IECEx Approval
The IS-mC1 Combined Sounder / Beacon has also been
approved to the IECEx scheme.
The installation requirements for IS-mC1 combined sounder /
beacon approved to the IECEx scheme are the same as the
installation requirements for IS-mC1 combined sounder /
beacon approved to the ATEX directive.
Certificate No. IECEx SIR 06.0045X
Marking: Ex ia IIC T4 Ga (Ta = -40ºC to +60ºC)
Standards: IEC 60079-0:2017
IEC 60079-11:2011
IEC 60079-26:2014-10
CONDITIONS OF CERTIFICATION (as stated on the IECEx
Certificate of Conformity IECEx SIR 06.0045X)
 The equipment has an ingress protection rating of
IP65. However, if it has been supplied without a
cable entry device, 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 on 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 ensues ingress protection
appropriate to the environment in which it is installed
i.e. IP20 or better.
 The total capacitance connected to Sounder
Terminals + w.r.t. Terminals - (i.e. the capacitance
of the cable plus any other capacitance) shall not
exceed 83nF.
 The enclosure is non-conducting and may generate
an ignition-capable level of electrostatic 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.
 The equipment shall only be supplied via Sounder
Terminal + w.r.t. Sounder Terminal - from a barrier
having a maximum open circuit voltage Uo that is <
28V and a maximum short circuit current Io that is <
93mA, where Io is resistively limited.
 If not already fitted optional internal wiring
connections between Sounder Terminals + / - and
Beacon Terminals + / - may be fitted by the user.
The wiring used for such connections shall have a
minimum radial thickness of insulation of 0.5mm.
The IS-mC1 combined sounder / beacon is marked with the
certification requirements for the ATEX and IECEx and
approvals.
e
2S
european safety systems ltd. London W3 7QH UK
WARNING: TO AVOID A POSSIBLE ELECTROSTATIC
CHARGE ONLY CLEAN WITH A DAMP CLOTH
IS-mC1
Combined Sounder / Beacon
II 1G Ex ia IIC T4 Ga (-40ºC <=Ta<= +60°C)
2813
SIRA 05ATEX2084X
Year / Ser. No.
09 / 1MCR000001
Sounder Terminal + w.r.t. Terminal -
Ui = 28V Ii = 93mA Pi = 660mW Ci = 0 Li = 0
Sounder Terminals S2&S3 w.r.t. Terminal -
Ui = 28V Ii = 0mA
www.e2s.com
Beacon Terminal + w.r.t. Terminal -
Ui = 28V Ii = 660mA Pi = 1.2W Ci = 0 Li = 0
IECEx SIR 06.0045X
UKEX Approval
The IS-mC1 Sounder has also been approved to the UKEX
scheme.
The installation requirements for IS-mC1 sounders approved
to the UKEX scheme are the same as the installation
requirements for IS-mC1 sounders approved to the ATEX
directive.
Certificate No. CSAE 21UKEX2553X
Marking: Ex ia IIC T4 Ga (Ta = -40ºC to +60ºC)
Standards: EN IEC 60079-0:2018
EN60079-11:2012
IEC60079-26:2014
The IS-mC1 sounders are marked with the certification
requirements for the UKEX approval.
FM Approval
The IS-mC1 Combined Sounder / Beacon has also been FM
Listed.
Marking: IS Class I, Zone 0, AEx ia IIC T4
IS Class I, Division 1, Groups A, B, C, D
See the Control Drawings D 5037 Sheets 1 and 2 for
installation details and entity parameters.
WARNINGS:
IS-mC1 Combined SOUNDER / BEACON
To prevent ignition of flammable or combustible
atmospheres, disconnect power before servicing
Substitution of components may impair safety
FM
APPROVED
IS Class l, Division 1, Groups A, B, C, D
IS Class I, Zone 0, AEx ia IIC T4 (-40ºC <=Ta<= +60°C)
e2S european safety systems ltd. London W3 7QH UK
Control Drawing D 5037
www.e2s.com
Year / Serial No. 09 / 1MCR000001
TO AVOID A POSSIBLE ELECTROSTATIC
CHARGE ONLY CLEAN WITH A DAMP CLOTH

Date:
Drawn:
Issue: Appd. Date:
European Safety Systems Ltd.
Impress House
Mansell Road
Acton
London W3 7QH
D 5037 Sheet 1 of 2
D5037a.dwg
MRS
10-01-07MRSA
2S
warning signals
Hazardous (Classified) Location
Class I, Division 1, Groups A, B, C, D
Class I, Zone 0, Groups IIA, IIB, IIC
IS-mC1 Sounder Section
IS Class I, Zone 0, AEx ia IIC T4
(−40°C ≤Ta≤+60°C)
Entity Parameters:
Terminals +w.r.t. −
Ui= 28V
Ii= 93mA
Pi= 660mW
Ci= 0
Li= 0
Terminals
S2 & S3 w.r.t. -
Ui= 28V
Ii= 0
Ci = 0
Uo = 16.8V
Io = 7.3mA
Po = 31mW
Unclassified Location
Associated Apparatus - Shunt Zener Diode
Barrier with Entity Parameters:
Uo≤28V
Io≤93mA
Po≤660mW
Co≥Ccable (see note 10)
Lo≥Lcable
Associated Apparatus - Diode Return Barrier
with Entity Parameters:
Uo≤28V
Io= 0
Co≥Ccable
Associated Apparatus - Diode Return Barrier
with Entity Parameters:
Uo≤28V
Io= 0
Co≥Ccable
+
-
S2
S3
1. No revision to drawing without prior FM approval.
2. The associated apparatus must be FM approved.
3. The associated apparatus manufacturer's installation drawing must
be followed when installing this equipment.
4. Installation should be in accordance with ANSI/ISA RP12.06.01
"Installation of Intrinsically Safe Systems for Hazardous (Classified)
Locations" and the National Electrical Code (ANSI/NFPA 70).
5. The resistance between the intrinsically safe ground and the earth
ground must be less the 1 ohm.
6. The Shunt Zener Diode Barrier must be a FM approved, resistively
limited, single channel barrier having parameters less than, or equal
to, those quoted, and for which the output is non-ignition capable for
the Class, Division or Zone and Group of use.
7. The IS-mC1 Combined Unit enclosure has an ingress protection
rating of IP 65. If supplied without cable entry devices then metallic or
plastic cable glands, or conduit hubs, shall be fitted that provide the
required environmental protection.
8. To prevent ignition of flammable or combustible atmospheres,
disconnect power before servicing.
9. Substitution of components may impair safety.
10. The total capacitance connected to terminals +/- of the sounder,
i.e. Ccable plus any other capacitance, shall not exceed 83nF.
11. If the sounder and beacon +/- supply terminals are connected
internally then the wiring used for such a connection shall have a
minimum radial thickness of insulation of 0.5mm.
Notes:
CAUTION - Bonding between conduit connections is not automatic
and must be provided as part of this installation.
CAUTION - The clearance between sounder terminals S2 and S3 is
less than 6mm.
Drawing No. Computer Ref.
IS-mC1 Combined SOUNDER / BEACON
Control Drawing for shunt zener
diode barrier / diode return barrier.
Title
21-04-06
-
+
IS-mC1 Beacon Section
IS Class I, Zone 0 AEx ia IIC T4
(−40°C ≤Ta≤+60°C)
Entity Parameters:
Terminals +w.r.t. −
Ui= 28V
Ii = 660mA
Pi= 1.2W
Ci= 0
Li= 0
+
-
NOTE:
THE BEACON SECTION CAN BE CONNECTED
TO IT'S OWN BARRIER INDEPENDENT OF THE
SOUNDER SECTION. THE REQUIREMENTS OF
CONTROL DRAWING D5036 SHEET 1 CAN THEN
BE APPLIED TO THE BEACON SECTION. IF THIS
OPTION IS USED, THE INTERNAL LINKS
BETWEEN THE SOUNDER SECTION AND
BEACON SECTION MUST NOT BE FITTED.
(See Note 11)
SCHEDULE DRAWING
No modification permitted
witho ut reference to the
"Notified Body"

Date:
Drawn:
Issue: Appd. Date:
European Safety Systems Ltd.
Impress House
Mansell Road
Acton
London W3 7QH
21-04-06
MRS
10-01-07MRS
A
2S
warning signals
Hazardous (Classified) Location
Class I, Division 1, Groups A, B, C, D
Class I, Zone 0, Groups IIA, IIB, IIC
Unclassified Location
Associated Apparatus - Galvanically Isolated
Supply with Entity Parameters:
Uo≤28V
Io≤93mA
Po≤660mW
Co≥Ccable (see note 9)
Lo≥Lcable
Associated Apparatus - Galvanically Isolated
Relay with Entity Parameters:
Uo= 0
Io= 0
(See Note 10)
Associated Apparatus - Galvanically Isolated
Relay with Entity Parameters:
Uo= 0
Io= 0
(See Note 10)
1. No revision to drawing without prior FM approval.
2. The associated apparatus must be FM approved.
3. The associated apparatus manufacturer's installation drawing must
be followed when installing this equipment.
4. Installation should be in accordance with ANSI/ISA RP12.06.01
"Installation of Intrinsically Safe Systems for Hazardous (Classified)
Locations" and the National Electrical Code (ANSI/NFPA 70).
5. The Galvanically Isolated Supply must be a FM approved,
resistively limited, single channel supply having parameters less than,
or equal to, those quoted, and for which the output is non-ignition
capable for the Class, Division or Zone and Group of use.
6. The IS-mC1 Combined Unit enclosure has an ingress protection
rating of IP 65. If supplied without cable entry devices then metallic or
plastic cable glands, or conduit hubs, shall be fitted that provide the
required environmental protection.
7. To prevent ignition of flammable or combustible atmospheres,
disconnect power before servicing.
8. Substitution of components may impair safety.
9. The total capacitance connected to terminals +/- of the sounder, i.e.
Ccable plus any other capacitance, shall not exceed 83nF.
10. The C cable and Lcable of the cables connecting the galvanically
isolated relays to sounder terminals S2/- and S3/- shall be less than,
or equal to, the C cable and Lcable of the cable connecting the
galvanically isolated supply to sounder terminals +/-.
11. If the sounder and beacon +/- supply terminals are connected
internally then the wiring used for such a connection shall have a
minimum radial thickness of insulation of 0.5mm.
Notes:
CAUTION - Bonding between conduit connections is not automatic
and must be provided as part of this installation.
CAUTION - The clearance between sounder terminals S2 and S3 is
less than 6mm.
IS-mC1 Combined SOUNDER / BEACON
Control Drawing for galvanically
isolated supply / isolated relay
installation. D 5037 Sheet 2 of 2
D5037b.dwg
Drawing No. Computer Ref.
Title
IS-mC1 Sounder Section
IS Class I, Zone 0, AEx ia IIC T4
(−40°C ≤Ta≤+60°C)
Entity Parameters:
Terminals +w.r.t. −
Ui= 28V
Ii= 93mA
Pi= 660mW
Ci= 0
Li= 0
Terminals
S2 & S3 w.r.t. -
Ui= 28V
Ii= 0
Ci = 0
Uo = 16.8V
Io = 7.3mA
Po = 31mW
+
-
S2
S3
-
+
IS-mC1 Beacon Section
IS Class I, Zone 0 AEx ia IIC T4
(−40°C ≤Ta≤+60°C)
Entity Parameters:
Terminals +w.r.t. −
Ui= 28V
Ii = 660mA
Pi= 1.2W
Ci= 0
Li= 0
+
-
-
-
(See Note 11)
NOTE:
THE BEACON SECTION CAN BE CONNECTED
TO IT'S OWN BARRIER INDEPENDENT OF THE
SOUNDER SECTION. THE REQUIREMENTS OF
CONTROL DRAWING D5036 SHEET 2 CAN THEN
BE APPLIED TO THE BEACON SECTION. IF THIS
OPTION IS USED, THE INTERNAL LINKS
BETWEEN THE SOUNDER SECTION AND
BEACON SECTION MUST NOT BE FITTED.
SCHEDULE DRAWING
No modification permitted
without reference to the
"Notified Body"

E2S Telephone: [phone] Fax: [phone] Email: [e-mail] www.e2s.com DC-011_Issue_J (IS-Mini) - Page 1 of 2 - QAF_252_Issue_5
EU Declaration of Conformity
Manufacturer: European Safety Systems Ltd.
Impress House, Mansell Road, Acton
London, W3 7QH
United Kingdom
Authorised Representative: E2S Warnsignaltechnik UG
Charlottenstrasse 45-51
72764 Reutlingen
Germany
Equipment Type: IS-mA1, IS-mA2, IS-mA3, IS-mB1, IS-mC1, IS-mA1M
Directive 2014/34/EU: Equipment and Protective Systems for use in Potentially Explosive Atmospheres (ATEX)
Notified Body for EU type Examination (Module B):
Sira Certification Service
Notified Body No.: 2813
CSA Group Netherlands B.V, Utrechtseweg 310, 6812 AR, Arnhem, Netherlands
EU-type Examination Certificate (Module B):
SIRA 05ATEX2084X
Notified Body for Quality Assurance Notification / Conformity to EU-type
based on
quality assurance of the production process (Module D):
Sira Certification Service
Notified Body No.: 2813
CSA Group Netherlands B.V, Utrechtseweg 310, 6812 AR, Arnhem, Netherlands
Quality Assurance Notification (Module D):
SIRA 05 ATEX M342
Provisions fulfilled by the equipment:
II 1 G Ex ia IIC T4 Ga (-40 °C ≤ Ta ≤ +60 °C) or
I M1 Ex ia I Ma (-40 °C ≤ Ta ≤ +60 °C)
Standards applied:
EN IEC 60079-0:2018
EN 60079-11:2012
IEC 60079-26:2014
Regulation EU No. 305/2011: Construction Products Regulation (CPR) –IS-mA1 (tones 2, 3, 9, 15, 16, 17) only
Notified Product Certification Body for Certificate of Constancy of
Performance or EC Type Examination Certificate and continuous
surveillance, assessment and evaluation of factory production control:
VdS Schadensverhütung GmbH
Notified Body No.: 0786
Amsterdamer Str 172-174, 50735 Köln, Germany
Certificate of Constancy of Performance or EC Type Examination
Certificate:
0786-CPD-20338
Standards applied:
EN 54-3:2001 + A1:2002 + A2:2006
Directive 2014/30/EU: Electromagnetic Compatibility Directive (EMC)
Standards applied:
EN 61000-6-1:2007
EN 61000-6-2:2005
EN 61000-6-3:2007 / A1:2011 / AC: 2012
EN 61000-6-4:2007 / A1: 2011
Directive 2011/65/EU: Restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS)
The product and all the components contained within it are in accordance with the restriction of the use of hazardous substances in electrical and electronic
equipment, including amendment by Directive 2015/863/EU.
Regulation (EC) 1907/2006: Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)
The product and all the components contained within it are free from substances of very high concern.
Other Standards and Regulations
EN 60529:1992+A2:2013 - Degrees of protection provided by enclosures (IP code) –enclosure rated IP65

E2S Telephone: [phone] Fax: [phone] Email: [e-mail] www.e2s.com DC-011_Issue_J (IS-Mini) - Page 2 of 2 - QAF_252_Issue_5
Martin Streetz
Document No.:
DC-011_Issue_J
Quality Assurance Manager
Date and Place of Issue:
London, 23/12/2020
EU Declaration of Conformity
On behalf of European Safety Systems Ltd., I declare that, on the date the equipment accompanied by this declaration is placed on the market, the equipment
conforms with all technical and regulatory requirements of the above listed directives, regulations and standards.
This Declaration is issued under the sole responsibility of the manufacturer.

E2S Telephone: [phone] Fax: [phone] Email: [e-mail] www.e2s.com DC-088_Issue_A (IS-Mini) - Page 1 of 2 - QAF_252_Issue_5
UKCA Declaration of Conformity
Manufacturer: European Safety Systems Ltd.
Impress House, Mansell Road, Acton
London, W3 7QH
United Kingdom
Equipment Type: IS-mA1, IS-mA2, IS-mA3, IS-mB1, IS-mC1, IS-mA1M
Directive UKSI 2016:1107 (as amended by UKSI 2019:696) – Schedule 3A, Part 1 : Product or Protective System Intended for use in Potentially Explosive Atmospheres
(UKCA)
Notified Body for UK
type Examination
(Module B)
:
Sira Certification Service
Notified Body No.: 0518
Rake Lane, Eccleston, Chester CH4 9JN, UK
UK
-
type Examination Certificate
(Module B)
:
CSAE 21
UKEX2553X
Notified Body for Quality Assurance
Notification
/ Conformity to EU
-
type
based on
quality assurance of the production process (Module D):
Sira Certification Service
Notified Body No.: 0518
Rake Lane, Eccleston, Chester CH4 9JN, UK
Quality Assurance Notification
(Module D)
:
CSAE 22UKQAN0046
Provisions fulfilled by the equipment:
II 1 G Ex ia IIC T4 Ga (
-
40 °C
≤ Ta ≤ +60 °C) or
I M1 Ex ia I Ma (-40 °C ≤ Ta ≤ +60 °C)
Standards applied:
EN
IEC
60079
-
0:201
8
EN 60079-11:2012
IEC 60079-26:2014
Regulation EU No. 305/2011: Construction Products Regulation (CPR) – IS-mA1 (tones 2, 3, 9, 15, 16, 17) only
Notified
Product Certification
Body for
Certificate of Constancy of
Performance or EC Type Examination Certificate and continuous
surveillance, assessment and evaluation of factory production control:
VdS Schadensverhütung GmbH
Notified Body No.: 0786
Amsterdamer Str 172-174, 50735 Köln, Germany
Certificate of Constancy of Performance or EC Type Examination
Certificate:
0786
-
CPD
-
20338
Standards applied:
EN 54
-
3:2001
+
A1:2002
+
A2:2006
Directive 2014/30/EU: Electromagnetic Compatibility Directive (EMC)
Standards applied:
EN 61000
-
6
-
1:2007
EN 61000-6-2:2005
EN 61000-6-3:2007 / A1:2011 / AC: 2012
EN 61000-6-4:2007 / A1: 2011
Directive 2011/65/EU: Restriction of the use of certain hazardous substances in electrical and electronic equipment (RoHS)
The product and all the components contained within it are in accordance with the restriction of the use of hazardous substances in electrical and electronic
equipment, including amendment by Directive 2015/863/EU.
Regulation (EC) 1907/2006: Registration, Evaluation, Authorisation and Restriction of Chemicals (REACH)
The product and all the components contained within it are free from substances of very high concern.
Other Standards and Regulations
EN 60529:1992+A2:2013 - Degrees of protection provided by enclosures (IP code) – enclosure rated IP65

E2S Telephone: [phone] Fax: [phone] Email: [e-mail] www.e2s.com DC-088_Issue_A (IS-Mini) - Page 2 of 2 - QAF_252_Issue_5
Martin Streetz Document No.: DC-088_Issue_A
Quality Assurance Manager Date and Place of Issue: London, 04/02/2022
UKCA Declaration of Conformity
On behalf of European Safety Systems Ltd., I declare that, on the date the equipment accompanied by this declaration is placed on the market, the equipment
conforms with all technical and regulatory requirements of the above listed directives, regulations and standards.
This Declaration is issued under the sole responsibility of the manufacturer.