Installation; Electrical Connections - ABB 600T Series Operating Instruction

INSTALLATION

The Field Indicator unit may be mounted to a 50 mm (2 inch)
pipe by means of its mounting bracket. The unit can be
rotated in the most appropriate viewing angle and locked
in position.
WARNING - In order to ensure operator safety and
plant safety it is essential that installation is carried out
by suitably trained personnel according to the technical
data provided in the specification for the relevant model.
Fig. 1 - Field indicator installation
WARNING - The indicator should not be installed
where it may be subjected to mechanical and thermal
stresses or where it may be attached by existing or
foreseable aggressive substances.
Analog display, digital display and CoMeter can be installed
in the housing as shown in fig. 1, in any convenient position
as the internal meter may be rotated as required.
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ELECTRICAL CONNECTIONS

WARNING - For installation in Hazardous Areas, i.e.
areas with dangerous concentrations of e.g. gases or
dusts that may explode if ignited, the installation must
be carried out in accordance with relative standards
either EN 60079-14 or IEC 60079-14 and/or with local
authority regulations, for the relevant type of protection
adopted.
Access to the signal terminals is gained by removing the
meter; to remove the meter, first unscrew the housing cover
by turning it. Unplug the meter by pulling it out gently. On
the meter housing two connection ports for cable glands
or conduit fittings are provided. These ports are protected
with plastic plugs for transit purpose. The unused port pla-
stic plug must be replaced for Hazardous Area installations
with flameproof (explosion proof) protection (see relevant
warning).
WARNING - For installation in Hazardous Areas,
i.e. areas with danger of fire and/or explosion, prior to
making electrical connections, ensure compliance with
safety information on the Safety Marking plate. Failure to
comply with this warning can result in fire or explosion.
WARNING - For Hazardous Areas installations, at
least six (6) threads on the cover must be engaged in
order to meet flameproof (explosion-proof) requirements.
Internal ground
termination point
M
Socket for the
plug-in meter
Fig. 2 - Terminal block detail
The field indicator can be connected in accordance with
the following two configurations:
1) Indicator only, i.e. coupled to the transmitter's terminal
block (fig. 3)
2) Junction box, i.e. inserted in any point of the 4 to 20 mA
line connecting the transmitter to its receiver/power
supply (fig. 4).
In any cases the line resistance to the field indicator con-
nection should not exceed 15 ohm. This limitation does not
apply to the scheme in Fig. 4.
Terminals
External ground
termination point