ABB TZIDC-110 Operating Instruction page 26

26 TZIDC-110, TZIDC-120 DIGITAL POSITIONER | OI/TZIDC-110/TZIDC-120-EN REV. H
... 2 Use in potentially explosive atmospheres
... TZIDC-120 – Ex relevant specification
Special conditions for the safe use of intrinsically safe
positioners
Special conditions
• The 'Local communication interface (LCI)' may only be used
outside of the explosion hazardous area with U
• Measures of lightning protection have to be provided by the
user.
Special conditions for safe use of Positioners non I.S.
• Only devices which are suitable for the operation in explosion
hazardous areas declared as zone 2 and the conditions
available at the place of operation are allowed to be
connected to circuits in the zone 2.
• The connecting and disconnecting as well as the switching of
circuits under voltage are only permitted during installation,
for maintenance or repair purposes.
Note
The temporal coincidence of explosion hazardous atmosphere
and installation, maintenance resp. repair purposes is assessed
as improbably.
• For the circuit 'Position feedback with proximity switches or
microswitches' measures have to be taken outside the device
that the rated voltage is exceeded not more than 40 % by
transient disturbances.
• Only non combustible gases are allowed to be used as
pneumatic auxiliary energy.
• Only suitable cable entries which meet the requirements of
IEC 60079-15 are allowed to be used.
Use, operation
The TZIDC-110, TZIDC-120 is only approved for intended and
appropriate use. In case of non-compliance, the warranty and
manufacturer's liability do no longer apply!
• In explosive atmospheres only such auxiliary components
shall be used that meet all requirements of the European and
the national standards.
• The ambient conditions specified in the instruction manual
have to be adhered to strictly.
• The TZIDC-110, TZIDC-120 has only been approved for its
appropriate and intended use in standard industrial
atmospheres. Where aggressive substances are present in
the air, the manufacturer has to be consulted.
Maintenance, repair
Maintenance: defines a combination of any actions carried out to
retain an item in, or restore it to, conditions in which it is able to
meet the requirements of the relevant specification and perform
≤ 30 V DC. its required functions.
m
Inspection:
defines any action comprising careful scrutiny of an item
carried out either without dismantling, or with the addition
of partial dismantling as required, supplemented by means
such as measurement, in order to arrive at reliable conclusion
as to the condition of an item.
Visual inspection:
defines an inspection which identifies, without the use of
access equipment and tools, those defects, such as missing
bolts, which will be apparent to the eye.
Close inspection:
defines an inspection which encompasses those aspects
covered by a visual inspection and, in addition, identifies
those defects, such as loose bolts, which will be apparent
only be the use of access equipment, for example steps,
where necessary, and tools.
Detailed inspection:
defines an inspection which encompasses those aspects
covered by a close inspection and, in addition, identifies
those defects, such as loose terminations, which will only be
apparent by opening the enclosure, and/or using, where
necessary, tools and test equipment.