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European Safety Systems Ltd.
Impress House, Mansell Road, Acton, London W3 7QH www.e2s.com Tel: +44 (0)208 743 8880
Document No. D204-00-201-IS Issue 8 10-09-2023 Sheet 4 of 6
The cable gland entries have an M20 x 1.5 entry thread. Only
suitably rated and ATEX / IECEx / UKEX 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 / UKEX 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 STExCP8 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 / UKEX certified adapters.
11) Cable & Wiring Connections
The units come with two options.
A DIN rail version which has 8-way connection and allows for
limited wiring of EOL devices by customer, or, full pre-wired
configurations if outlined with order to E2S.
For full wiring details see wiring diagrams D202-06-211
The PCB Terminal Version has a 6-way connector but is
designed to allow for full customer configuration with Series
and EOL devices in a number of wiring configurations. E2S
can also configure unit at time of order to E2S
For full wiring details see wiring diagrams D202-06-212
For EOL and Series device limitations and configurations see
Section 13. Fitting can be requested by E2S at the order
stage or added to the correct terminal blocks afterward. All
devices must comply with the requirements stipulated in
section 13.
Electrical Connections are to be made into the terminal
blocks using solid or stranded wire.
Wires having a cross sectional area between 0.5 mm² to
2.5mm² (AWG 20
– 14) can be connected to each terminal
way.
In most configuration an input and output wire can be fitted to
individual terminals, where these are more complex and 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.
DIN Rail Terminals: 0.51 Nm / 4.5 Lb-in;
Connector Block Terminals: 0.87 Nm / 7.7 Lb-in;
PCBA Main Terminals: 0.45 Nm / 4.0 Lb-in;
PCBA EOL and Series (1 & 2) Terminals: 0.38 Nm / 3.4 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.
12) Testing unit operation
The push button types -PB -PT and -PM are all operated by
pressing in the main plunger down activating the switch.
The -PB plunger needs to be firstly twisted by 90 degrees
clockwise to position shown and then pressed in.
Fig 6 -PB Version Twist and Push Action
The -PM and -PT need to have the protective flip lid opened
first and then the main plunger pressed in.
Fig 7 -PT & -PM Versions Push Action
On
–PM versions the operation is momentary and as such
the plunger will reset automatically once the pressure on the
plunger is released.
