Samson 4763 - Electrical Connections

EB 8359-2 EN 25
Mounting and start-up
5.5 Electrical connections
Risk of fatal injury due to the formation of
an explosive atmosphere.
Incorrect installation, operation or
maintenance of the positioner in potentially
explosive atmospheres may lead to ignition
of the atmosphere and ultimately to death.
Switching the assignment of the electrical
terminals may cause the explosion protection
to become ineffective.
− The following regulations apply to installa-
tion in hazardous areas: EN60079-14
(VDE0165, Part1).
− Installation, operation or maintenance of
the positioner must only performed by
personnel who has undergone special
training or instructions or who is
authorized to work on explosion-protected
devices in hazardous areas.
− Adhere to the terminal assignment. Do not
undo the enameled screws in or on the en-
closure.
− The maximum permissible values specied
in the EC type examination certicates ap-
ply when interconnecting intrinsically safe
electrical equipment (U
i
or U
o
, l
i
or I
o
, P
i
or
P
o
, C
i
or C
o
and L
i
or L
o
).
DANGER
!
Selecting cables and wires:
Observe clause12 of EN60079-14: 2008
(VDE0165, Part1) for installation of the
intrinsically safe circuits. Clause12.2.2.7
applies when running multi-core cables and
wires with more than one intrinsically safe
circuit.
The radial thickness of the insulation of a
conductor for common insulating materials
(e.g. polyethylene) must not be smaller than
0.2mm. The diameter of an individual wire
in a ne-stranded conductor must not be
smaller than 0.1mm.
Protect the conductor ends against splicing,
e.g. by using wire-end ferrules.
When two separate cables or wires are used
for connection, an additional cable gland
can be installed. Seal cable entries left
unused with plugs. Fit equipment used in
ambient temperatures below –20°C with
metal cable glands.
Equipment for use in zone2/zone22:
In equipment operated according to type of
protection ExnA II (non-sparking equipment)
according to EN60079-15:2003, circuits
may be connected, interrupted or switched
while energized only during installation,
maintenance or repair.
Guide the wires for the reference variable
over the cable gland to the terminals 11 (+)
and 12 (–) located in the housing.
The ground connection can be connected in-
side or outside of the positioner housing.
Accessories for electrical connections
Î See section3.1.