E2S GNExCP7-PT-S User manual

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e-2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2019 Sheet 1 of 8
INSTRUCTION MANUAL (ATEX / IECEx / CLASS DIV / UL38)
GNExCP7-PT-S & GNExCP7-PT-D CALL POINTS
For u e in Flammable Ga Atmo phere
1) Warnings
•USE COVER BOLTS CLASS A4-70
•DO NOT OPEN WHEN AN EXPLOSIVE
ATMOSPHERE IS PRESENT
•POTENTIAL ELECTROSTATIC CHARGING
HAZARD – SEE INSTRUCTIONS
•FOR INDOOR USE
•TO REDUCE THE RISK OF IGNITION OF
HAZARDOUS ATMOSPHERES, CONDUIT RUNS
MUST HAVE A SEALING FITTING CONNECTED
WITHIN 18 INCHES OF CONDUIT
AVERTISSEMENT:
•UTILISER COUVRIR BOULONS CLASSE A4-70
•NE PAS OUVRIR UN PRESENCE
D'ATMOSPHERE EXPLOSIVE
•DANGER POTENTIEL CHARGE
ÉLECTROSTATIQUE - VOIR LES INSTRUCTIONS
•POUR USAGE INTÉRIEUR
•POUR RÉDUIRE LE RISQUE D'INFLAMMATION
DES ATMOSPHÈRES DANGEREUSES, LES
CONDUITES DE CONDUIT DOIVENT AVOIR UN
RACCORD D'ÉTANCHÉITÉ RACCORDÉ À MOINS
DE 18 POUCES DE L'ENFERMEMENT
2) Rating & Marking Information
The GNExCP7PT callpoints meet the following standards for
Fire Alarm System Use:
UL 38 8th Edition 10/4/2013 Manual Signaling Boxes for Fire
Alarm Systems
ULC-S528 3rd Edition 2014-10 Manual Stations For Fire
Alarm Systems, Including Accessories
2.1 NEC & CEC Class / Division Ratings for US / Canada
The GNExCP7PT callpoints comply with the following
standards:
UL 60079-0:2017 (Ed 6): Explosive Atmospheres - Part 0:
Equipment - General requirements
UL 60079-1:2015 (Ed7): Explosive Atmospheres - Part 1:
Equipment protection by flameproof enclosures “d”
UL 60079-31:2012 (Ed 2): Explosive Atmospheres - Part 31:
Equipment dust ignition protection by enclosure "t"
The Callpoints are rated as follows:
Class I Div 2 Group ABCD T5 Ta -55°C to +70°C
Class I Div 2 Group ABCD T6 Ta -55°C to +60°C
Class II Div 2 Group FG T4 Ta -55°C to +70°C
Class III Div 1 & 2 Ta -55°C to +70°C
Installation must be carried out in compliance with the
National Electric Code / Canadian Electric Code
2.2 NEC Class / Zone ratings US
The Callpoints are rated as follows:
Class I Zone 1 AEx db IIC T5 Gb (Ta -55°C to +70°C)
Class I Zone 1 AEx db IIC T6 Gb (Ta -55°C to +60°C)
Zone 21 AEx tb IIIC T135°C Db (Ta -55°C to +70°C)
Installation must be carried out in compliance with the
National Electric Code.
2.3 CEC Class / Zone ratings Canada
The GNExCP7PT callpoints comply with the following
standards:
CSA C22.2 NO. 60079-0:2015 (Ed 3) Explosive Atmospheres
– Part 0: Equipment – General requirements
CSA C22.2 NO. 60079-1:2016 (Ed 3): Explosive
Atmospheres – Part 1: Equipment protection by flameproof
enclosures “d”
CSA C22.2 NO. 60079-31:2015 (Ed 2): Explosive
Atmospheres – Part 31: Equipment dust ignition protection by
enclosure “t”
The Callpoints are rated as follows:
Class I Zone 1 Ex db IIC T5 Gb X (Ta -55°C to +70°C)
Class I Zone 1 Ex db IIC T6 Gb X (Ta -55°C to +60°C)
Zone 21 Ex tb IIIC T135°C Db (Ta -55°C to +70°C)
Installation must be carried out in compliance with the
Canadian Electric Code.

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2019 Sheet 2 of 8
2.4 ATEX / IECEx Certification
The GNExCP7PT callpoints comply with the following
standards:
EN60079-0:2018 / IEC60079-0:2017 (Ed 7): Explosive
Atmospheres – Part 0: Equipment. General requirements
EN60079-1:2014 / IEC60079-1:2014 (Ed 7): Explosive
Atmospheres - Part 1: Equipment protection by flameproof
enclosures "d"
EN 60079-31:2014 / IEC 60079-31:2013 (Ed 2): Explosive
Atmospheres - Part 31: Equipment dust ignition protection by
enclosure "t"
All units have a rating label, which carries the following
important information: -
Model No.: GNExCP7-PT-S (Single Switch)
GNExCP7-PT-D (Dual Switch)
Input Voltage: DC Units 48Vdc Max
AC Units 250Vac max (units without series
or end-of-line devices only)
Ex db IIC T5 Gb Ta. -55 to +70°C
Ex db IIC T6 Gb Ta. -55 to +60°C
Ex tb IIIC T90°C Db Ta. -55° to +70°C
Certificate No. DEMKO 19 ATEX 2101X
IECEx ULD 19.0007X
The units can be installed in locations with the following
conditions:
Area Classification Gas:
Zone 1 Explosive gas air mixture likely to occur in
normal operation.
Zone 2
Explosive gas atmosphere not likely to
occur in normal operation but may be
present for short periods.
Gas Groupings:
Group IIA Propane
Group IIB Ethylene
Group IIC Hydrogen and Acetylene
Temperature Classification:
T1 450ºC
T2 300ºC
T3 200ºC
T4 135ºC
T5 100ºC
T6 85ºC (only up to Tamb 60°C)
Area Classification Dust:
Zone 21 Explosive dust air mixture likely to occur in
normal operation.
Zone 22 Explosive dust air mixture not likely to occur in normal operation, and if it does, it
will only exist for a short time.
Dust Groupings:
Group IIIA Combustible Flyings
Group IIIB Non-conductive Dust
Group IIIC Conductive Dust
Maximum Surface Temperature for Dust Applications:
90ºC
135°C
IP Rating: IP66/67 to EN/IEC60529 and IP6X to
EN/IEC60079-0, EN/IEC60079-31
Equipment Category: 2G / 2D
Equipment Protection Level: Gb, Gc, Db, Dc
Ambient Temperature Range:
-55°C to +70°C
3) Installation Requirements
The unit must only be installed by suitably qualified personnel
in accordance with the latest issues of the relevant standards:
EN60079-14 / IEC60079-14: Explosive atmospheres -
Electrical installations design, selection and erection
EN60079-10-1 / IEC60079-10-1: Explosive atmospheres -
Classification of areas. Explosive gas atmospheres
The installation of the unit must also 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.
The equipment must not be installed with any obstruction to
the flanged flameproof joint any closer than permitted as per
EN/IEC60079-14, table 13.
4) Special Conditions of Use
The stainless steel button is not earthed and may generate
an ignition-capable level of electrostatic charges. It has a max
capacitance of 6.33pF according to EN/IEC60079-0, clause
7.5.
Equipment is permitted to be wall mounted only in vertical
position. The enclosure base is permitted in two mounting
positions, with the double entry lowermost or uppermost.
No repair to the Flamepaths is permitted
Flame Path on Base shown
hatched
0518
II 2G
II 2D
ATEX Marking
Equipment Group and
Category:
CE Marking
Notified Body No.

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2019 Sheet 3 of 8
Flame Path on Cover Shown
Hatched
Flame path through shaft bore
5) Location and Mounting
The location of the call point should enable ease of access
for operation and testing. The unit should be mounted using
the 4 off fixing holes which will accept up to M5 sized fixings.
They should only be fixed to services that can carry the
weight of the unit.
To gain access to the mounting holes in the base the front
cover must be removed. See Section 6.
80,0 [3,15in.]
114,0 [4,49in.]
134,0 [5,28in.]
137,0 [5,39in.]
133,9 [5,27in.]
Ø6,4 [Ø0,25in.]
Fig. 1 View of base unit showing fixing centres (in mm).
6) Access to the Flameproof Enclosure
To access the Ex d chamber, remove the four off M6 x 50
stainless steel A4-70 cap head cover bolts and withdraw the
flameproof cover taking extreme care not to damage the
flameproof joints in the process. M6 cover screws are Class
A4-70 stainless steel and only screws of this category can be
used for the enclosure.
On completion of the installation the flameproof joint surfaces
should be inspected to ensure that they are clean and that
they have not been damaged during installation.
Once the screws are removed the cover will hang down out
of the way to gain access to the terminals, the internal earth
terminal and mounting hole recesses.
Fig. 2 Accessing the Explosion proof Enclosure.
Check that the earth bonding wire between the two castings
is secure and the ‘O’ ring seal is in place.
When fitting the flameproof cover ensure the cover is sitting
flat and correctly positioned on the base. Insert the M6 x 50
stainless steel A4-70 Cap Head cover bolts and fully
tighten down (tightening torque 3.5Nm), ensuring no gap is
visible between the cover and base of the enclosure.
The enclosure is non-conductive. These 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.
Caution do not change factory applied finishes
7) Earthing
The units are provided with internal and external earth
terminals which are mounted in the base of the unit.
Internal earthing connections should be made to the Internal
Earth terminal in the base of the housing using a ring crimp
terminal to secure the earth conductor under the earth clamp.
The earth conductor should be at least equal in size and
rating to the incoming power conductors.
When using the internal earth terminal ensure that the
stainless steel M4 flat washer is between the incoming earth
wire and the enclosure.
Fig 3 Earth terminals
Warning –
Hot surfaces. External
surfaces and internal components may
be hot after operation, take care when
handling the equipment.
Warning – High voltage may be present,
risk of electric shock. DO NOT open
when energised, disconnect power
before opening.
Call Point Cover
Call Point Base
M6x
5
0 Cap head Cover Bolts
-
4 off Position
s
Wiring terminal
Internal Earthing
External Earthing

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2019 Sheet 4 of 8
8) Power Supply Selection
Electrical Ratings
250Vac max. / 3.33A max
48Vdc max. / 1.0A max
24Vdc max / 3.0A max
Electrical connections are to be made into the terminal blocks
/ DIN rail provided. See Section 11 for wiring options.
9) Selection of Cable. Cable Glands, Blanking
Elements & Adapters
For high ambient temperatures the cable entry temperature
or the cable branching point temperature may exceed 60ºC
and therefore suitable heat resisting cables and cable glands
must be used, with a rated service temperature of at least the
values stated below:
For Single Switch model GNExCP7-PT-S:
For Dual Switch model GNExCP7-PT-D:
The cable gland entries have an M20 x 1.5 entry thread. Only
suitably rated and ATEX / IECEx certified cable glands which
must be suitable for the type of cable being used and also
meet the requirements of the current Ex ‘d’ flameproof
installation standards EN 60079-14 / IEC60079-14.
When only one cable entry is used the other entries must be
closed with suitably rated and ATEX / IECEx certified
blanking plugs.
If a high IP (Ingress Protection) rating is required then a
suitable sealing washer must be fitted under the cable glands
or blanking plugs.
The GNExCP7 Call Point range can be supplied with the
following types of adapters:
M20 to ½” NPT
M20 to ¾” NPT
M20 to M25
It is important to note that stopping plugs cannot be fitted
onto adapters, only directly onto the M20 entries.
Any other adapters used must be suitably rated and ATEX /
IECEx certified adapters.
10) Cable Connections
Electrical Connections are to be made into the terminal
blocks using solid or stranded wire. See section 6 of this
manual for access to the flameproof enclosure.
Wires having a cross sectional area between 0.5 mm² to
2.5mm² (AWG 20 – 14) can be connected to each terminal
way.
Wiring methods shall be in accordance with CSA C22.1,
Canadian Electrical Code, Part I, Safety Standard for
Electrical Installations, Section 32; and CAN/ULC-S524,
Standard for Installation of Fire Alarm Systems
If an input and output wire is required the 2-off Live/Neutral or
+/- terminals can be used. If fitting 2-off wires to one terminal
way the sum of the 2-off wires must be a maximum cross
sectional area of 2.5mm².
Strip wires to 8mm. Wires may also be fitted using ferrules.
Terminal screws need to be tightened down with a tightening
torque of 0.45 Nm / 5 Lb-in.
When connecting wires to the terminals great care should be
taken to dress the wires so that when the cover is inserted
into the chamber the wires do not exert excess pressure on
the terminal blocks. This is particularly important when using
cables with large cross sectional areas such as 2.5mm².
Max. ambient
temperature
(°C)
55 60 65 70
req. Cable /
Cable Gland
rating: (°C)
80 85 90 95
Max. ambient
temperature
(°C)
45 50 55 60 65 70
req. Cable /
Cable Gland
rating: (°C)
80 85 90 95 100 105

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2019 Sheet 5 of 8
M/S 1 M/S 2
+ - + -
1 3 4 6
SERIES 1 SERIES 2
EOL 1 EOL 2
Series (In line) device;
•resistor – SxxxR
•diode – SD1
•zener – SxxxZ
•LED
11) Wiring Unit
The units come with two options for the terminal block.
A DIN rail version which has 8-way connection and allows for
full configuration at factory or limited wiring of EOL devices by
customer.
The PCB Terminal Version has a 6-way connector but is
designed to allow for full configuration with Series and EOL
devices in a number of wiring configurations.
For EOL and Series device limitations and configurations see
Section 12.
For full wiring details see wiring diagrams page 7 & 8.
Wiring Connections for 8-Way DIN Rail
Fig. 4 DIN Rail in Base
Wiring Connections For 6-Way PCB Terminal Board
Fig. 5 PCB Terminal Block in Base
See section 12 and pages 7 & 8 for details of adding Series
and EOL devices on the PCB. This can either be done at the
order stage or added to the correct terminal blocks afterward.
All devices must comply with the requirements stipulated in
section 12.
12) End-of-Line and Series Devices
All models can be fitted with series resistors, end-of-
line monitoring resistors, monitoring diodes, zener
diodes and also specific customer modules if supplied
with direct current up to 48Vdc and limited to a
maximum total power consumption no greater than
6.224W.
Min. resistor values and current limitations must be observed
depending on supply voltage and type of components fitted. If
a combination of resistors / diodes / zener diodes is used,
values for all components must be observed and lowest
current limit for either component becomes overall limit.
Current limitation for units fitted with end-of-line resistors,
diodes or zener diodes must be ensured by using a current
limited power supply or fitting a current limiting resistor at the
control panel (not provided).
The following table 1 shows limitations for all possible
variations:
EOL (End of line) device;
•resistor – ExxxR
•diode – ED1
•zener – ExxxZ
Microswitch 1 = M/S 1
Microswitch 2 = M/S 2
The unit can be wired with a maximum of 4 module devices –
see wiring diagrams.
Please refer to wiring diagrams on sheets 7 & 8.
Note: - The maximum voltage stated must not be exceeded,
as the internal resistor modules are rated as compliant with
Ex d according to the unit voltage.
If lower value resistors than seen on table are required it may
be possible to configure but seek advice from E2S to ensure
compliance is still maintained.
Supply voltage
24Vdc
Supply voltage
48Vdc
Type of
component fitted
value Max.
current
mA
value Max.
current
mA
End-of-Line
Resistor
*See note
min.
470R/2W
or
min.
2k2/0.5W
3000 min.
2k2/2W
or
min.
8k2/ 0.5W
1000
End-of-Line Diode
Type 1N5401
2W 59.13 2W 25.26
Series Resistor
*See note
min. 470R
/ 2W
or
min.
2k2/0.5W
3000 min.
2k2/2W
or
min.
8k2/0.5W
1000
Series Diode
Type 1N5401
2W 59.13 2W 25.26
Series Zener Diode
Type 1N5333B
3.3V
230
3.3V
230
4.7V
162
4.7V
162
5.1V
149
5.1V
149
5.6V
13
6
5.6V
136
6.2V
122
6.2V
122
6.8V
112
6.8V
112
10V
76
10V
76
12V
63
12V
63
6 4 3 1
- + - +
M/S 2
M/S 1

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2019 Sheet 6 of 8
13) Testing unit operation
The PT call points need to have the protective flip lid opened
first and then the main plunger pressed in.
Fig 7 -PT Push Action
The plunger will remain in the down/latched position until
the unit is reset. This is done by lifting the plunger back
up using the tool reset key provided.
14) Maintenance, Overhaul & Repair
Maintenance, repair and overhaul of the equipment should
only be carried out by suitably qualified personnel in
accordance with the current relevant standards:
To avoid a possible electrostatic charge the unit must only be
cleaned with a damp cloth.
Units must not be opened while an explosive atmosphere is
present.
EN60079-19
IEC60079-19 Explosive atmospheres - Equipment repair, overhaul and reclamation
EN 60079-17
IEC60079-17
Explosive atmospheres - Electrical
installations inspection and maintenance

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2019 Sheet 7 of 8
Double Microswitch only - Circuit shown with Unit un-operated
GNExCP7 UL38 DIN Rail / Terminal Version
Single Microswitch only - Circuit shown with Unit un-operated GNExCP7 UL38 DIN Rail / Terminal Version
1 2 3 4 5 6
- -
M/S 1 M/S 2
1 2 3 1 2 3
1 2 3
NO SERIES DEVICE
DEFAULT PIN 1 & 3
LINKED
1 2 3
SR1 OR SR2
SERIES RESISTOR
FIT IN 1 & 3
1 2 3
SD1 OR SD2
SERIES DIODE
FIT IN 1 & 3
1 2 3
SZ1 OR SZ2
SERIES ZENER
DIODE FIT IN 1 & 3
1 2 3
NO EOL DEVICE
DEFAULT NOT
LINKED
1 2 3
ER1
EOL RESISTOR
FIT IN 1 & 3
1 2 3
ED1
EOL DIODE
FIT IN 1 & 3
1 2 3
EZ1
EOL ZENER
DIODE FIT IN 1 & 3
SERIES
DEVICE M/S 1
EOL
DEVICE M/S 1
1 2 3
ER1
EOL RESISTOR
FIT IN 2 & 3
WIRING OPTION 2
1 2 3 1 2 3
1 2 3 4 5 6
M/S 1 M/S 2
Optional Single or Double Microswitch Circuit shown wit Unit un-operated : GNExCP7 UL38 PCB
Version
M/S 1
+M/S 2
+
7 8
1 2 3 4 5 6
M/S 1
7 8
-
M/S 1
IN
+-
+M/S 1
OUT
Series
Device
if fitted
1 2 3 4 5 6
M/S 1
7 8
-
M/S 1
IN
+-
+M/S 1
OUT
EOL Device
if fitted
Alternative
Wiring Option 2
Position for
Series Device
if fitted
EOL
Device
if fitted
Series
Device
if fitted
EOL
Device
if fitted
EOL Device if fitted
Series
Device if fitted
- -
M/S 1
+M/S 2
+
1 2 3 4 5 6
M/S 1 M/S 2
7 8
EOL
Device
if fitted
EOL Device if fitted
- -
M/S 1
+M/S 2
+
Alternative
Wiring Option 2
Position for
Series Device
if fitted
Alternative Wiring Option 2
Position for
Series Device
if fitted
EOL Resistor EOL Diode EOL
Zener Diode
KEY - EOL Device
Orientation in DIN Rail circuit
Series
Resistor
Series
Diode
Series Zener Diode
KEY - Series Device Orientation in DIN Rail circuit
KEY
- Series
Devices
Orientaion
in PCB
Circuit
KEY
-EOL
Devices
Orientaion
in PCB
Circuit
SERIES
DEVICE M/S 2
EOL
DEVICE M/S 2
Single Microswitch only - Circuit shown with Unit
un-operated GNExCP7 UL38 DIN Rail / Terminal Version Optional Module
1 2 3 4 5 6
M/S 1
7 8
-
M/S 1
IN
+-
+M/S 1
OUT
Optional
Addressable Module
See Specific
Instruction sheet
addendum for Module
Details

_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH Tel: [phone]
[email protected]
www.e2s.com
Fax: [phone]
Document No. D202-00-201-IS_Issue_1 07-05-2017 Sheet 8 of 8
1 2 3 4 56
-
M/S 1
+
-
+
M/S 2
R
M/S 1
Y
B
R
M/S 1
Y
B
Y
BR
1 2 3 4 5 6
- -
M/S 1
Y
M/S 2
1 2 3 1 2 3 SERIES DEVICE 1
RESISTOR
EOL DEVICE 1
EZ1
1 2 3 1 2 3 SERIES DEVICE 2
NONE
(DEFAULT LINK)
EOL DEVICE 2
RESISTOR
BR
M/S 1
+M/S 2
+
Example: Dual Microswitch Microswitch M/S 1 With EOL Zener With Series Resistor Microswitch M/S 2 With EOL Resistor With no Series Device Simplified Diagram: Full Circuit Diagram:
1A - Circuit as shown in Unoperated condition
Terminals+ (1) & -(3) M/S 1 open and +(4) & -(6) M/S 2 open
Terminals +(1) & (2) M/S 1 and +(4) & (5) M/S 2 closed
1B - Circuit when in Operated condition
Terminals+ (1) & (2) M/S 1 open and +(4) & (5) M/S 2 open
Terminals +(1) & -(3) M/S 1 and +(4) & -(6) M/S 2 closed