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Les langues disponibles
Contact arrangements
Pushbutton
Double pushbutton
Mushroom-head pushbutton
Mushroom-head pushbutton with key
Key-operated pushbutton
Potentiometer
Control switch R6201
Control switch R6102
Control switch R6002
Control switch R5307
Control switch R5507
Control switch R8701
Explosion-protected control units GHG 411 / 412
The properly bared conductors of cables shall
be connected with due regard to the
respective regulations.
If multi- or fine-wire connection cables are
used, the wire ends shall be handled according
to the applicable national and international
regulations (e.g. use of multicore cable ends).
To maintain the explosion protection,
conductors shall be connected with special
care.
The insulation shall reach up to the
terminal. The conductor itself shall not be
damaged.
In the case of mixed Ex-e / Ex-i
installations, the required minimum
clearances shall be maintained (see, for
example, EN 50 020 and EN 60 079-14).
When apparatus is open, it is necessary to
ensure (disconnect voltage supply) that no
voltage is carried over into the connected
intrinsically safe circuits.
The installation instructions for intrinsically
safe electrical apparatus shall be observed. It
is necessary to ensure that the permissible
external capacitance and inductance of the
special intrinsically safe circuits are not
exceeded.
The minimum and maximum conductor cross
sections that can be connected shall be
observed (see technical data).
All screws and/or nuts of connection
terminals, including those not in use, shall be
tightened down securely.
The standard terminals are designed for the
direct connection of conductors with copper
wires.
The circuit diagram of the built-in components
is shown on the components or attached to
them, or it is shown in the operating
instructions.
If, to facilitate wiring, the built-in components
(AM/VM72 and AM/VM45 measuring
instruments, pushbutton contact block, signal
lamp bases, control switch contact blocks,
potentiometer bases, etc.) are snapped off
the rail on the bottom of the enclosure, the
components shall be snapped back properly
into the same notch on the rail.
To snap off components (including the measuring
instruments AM/VM72 and AM/VM45), pull the
hooks outwards to release them.
To ensure that the apparatus closes correctly,
switching at the switch shaft of the switches
insert is not permitted when the apparatus is
open.
Warning: the engaging positions of the
built-in components shall matches the
notches on the rail!
6.3
6.3
6.3
6.3
6.3
Cable entries (KLE);
Cable entries (KLE);
Cable entries (KLE);
Cable entries (KLE);
Cable entries (KLE);
blanking plugs
blanking plugs
blanking plugs
blanking plugs
blanking plugs
Generally, only certified cable entries and
blanking plugs may be used. Flexible
cables shall be used with trumpet-shaped
cable glands or other suitable entries with
additional pull relief.
The relevant mounting directives for cables
entries being used shall be observed.
When using cable entries with a degree of
protection that is lower than the IP protection
of the apparatus (see page 9), the degree of IP
protection for the complete unit is reduced.
Intrinsically safe circuits shall be fed through
cable entries that are colour-coded (light blue).
When using cable entries for fixed cables it is
necessary to ensure that no inadmissible high
mechanical stress is applied to the cable entry
or its seal.
In order to ensure the minimum degree of
protection, any unused entry holes shall be
sealed with certified blanking plugs.
When fitting cable entries, care has to be
taken that the sealing inserts are suitable for
the cable diameter. In the case of sealing
inserts that are cut out, it is necessary to
ensure that the insert is properly adapted to
the cable diameter.
In order to ensure the required minimum
degree of protection, the cable entries shall be
tightened down securely.
Overtightening can impair the degree of
protection.
Warning: When tightening the cap nut of
the metal cable entry (e.g. type E1WF/e), a
suitable tool shall be used to safeguard the
gland against twisting.
Any unused metric CEAG cable entries shall
be sealed with the blanking plug certified for
these metric cable entries.
6.4
Flange and metal plates *
If flange plates have to be dismantled, (e.g. to
drill entry holes), when replacing the plates, in
order to maintain the minimum degree of
protection, it is necessary to ensure that the
flange plate and the fixing clamp fit correctly.
PE conductors fed from outside shall be
connected to the PE terminal provided on
the flange. the maximum terminal cross
section is 6mm².
Warning: Metal flanges, metal plates and
metal glands shall be incorporated in the
potential equalization.
*
not yet certified for category II D
COOPER Crouse-Hinds GmbH
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