Use In Potentially Explosive Atmospheres; General Requirements; Commissioning, Installation; Notes For Operation - ABB TZIDC Commissioning Instruction

TZIDC, TZIDC-110, TZIDC-120 DIGITAL POSITIONER | CI/TZIDC/110/120-EN REV. E

2 Use in potentially explosive atmospheres

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General requirements

• The ABB positioner has been approved only for appropriate
and intended use in standard industrial atmospheres. Any
breach of this rule leads to a cancellation of warranty and
manufacturer's responsibility!
• Make sure that only devices which comply with the types of
protection relevant to the applicable zones and categories
are installed.
• All electric equipment has to be suited for the respective
intended use.

Commissioning, Installation

The ABB positioner has to be mounted in a major system.
Depending on the degrees of IP-protection, an interval for
cleaning the equipment (dust settlement) has to be defined.
Strict care has to be taken that only devices which comply with
the types of protection relevant to the applicable zones and
categories is installed. When installing the device, the locally
applicable installation regulations, such as EN 60079-14, must be
observed.
Other important facts to be observed:
• The electric circuits of the positioner must be put into
operation in all zones by persons qualified in accordance
with TRBS 1203. The details on the type label are
mandatory for doing this.
• The device has been designed in accordance with IP 65
(optionally IP 66) and must be protected accordingly
against adverse ambient conditions.
• The EC Type Examination Certificate has to be taken into
account, including any special conditions defined therein.
• The device may only be used in accordance with its
intended use.
• The device may only be connected when de-energized.
• The potential equalization of the system must be
established in accordance with installation regulations
applicable in the respective country (VDE 0100, part 540,
IEC 364-5-54).
• Circulating currents must not be guided through the
housing!
• Make sure that the housing is properly installed and that
its IP rating has not been compromised.
• In potentially explosive atmospheres, assembly may be
conducted only in compliance with locally applicable
installation regulations. The following conditions have to
be observed (incomplete):
- Assembly and maintenance may only be conducted if
there is no explosion hazard in the area and you have a
hot work permit.
- The TZIDC, TZIDC-110, TZIDC-120 may be operated in
a fully mounted and intact housing only.

Notes for operation

• The positioner must be integrated in the local potential
equalization system.
• Only either intrinsically safe or non intrinsically safe circuits
may be connected. A combination is not permit - ted.
• If the positioner is operated with non intrinsically safe
circuits, later use for the intrinsic safety type of protection is
not permitted.

Use, operation

The TZIDC, TZIDC-110, TZIDC-120 is approved for proper and
intended use only. In case of non-compliance, the warranty and
manufacturer's liability do no longer apply!
• Only those auxiliary components which fulfill all the
requirements of European and national standards may be
used in potentially explosive atmospheres.
• The ambient conditions specified in the operating
instruction must be strictly followed.
• The TZIDC, TZIDC-110, TZIDC-120 is approved for proper and
intended use in standard industrial atmospheres only. Where
aggressive substances are present in the air, the
manufacturer has to be consulted.
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