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Hazardous location installation
October 2023
6.3
Installation requirements – increased safety
The sensors EZ105x, EZ108x, EZ116x, EZ116H, EZ132x, and PR 642x are connected to the
AMS EZ 1000 Converter with intrinsically protection class in Zone 2/Division 2 by internal
protection of the AMS EZ 1000 Converter.
In the following conditions, the sensors EZ105x, EZ108x, EZ116x, EZ116H, EZ132x, and
PR 642x in combination with the AMS EZ 1000 Converter can be used for applications in
hazardous areas for Zone 2/Division 2, protection class increased safety – Ex ec:
•
Solely connect the AMS EZ 1000 Converter to SELV/PELV electrical circuits to meet the
requirements of U
supply (-24 V/┴) and the signal (┴/OUT) terminals.
•
The signal converter type EZ1000 and type EZ1000-SIS shall be mounted completely
inside an additional enclosure in accordance with IEC / EN IEC 60079-0 and IEC / EN IEC
60079-7, providing a degree of protection of not less than IP54.
•
For installation of the AMS EZ1000 Converter in Zone 2 areas, it has to be mounted in
an enclosure which is in accordance with IEC / EN IEC 60079-7.
•
The field housing must labeled with the following warning:
WARNING – EXPLOSION HAZARD – DO NOT OPEN ENCLOSURE UNLESS AREA IS
KNOWN TO BE NON-HAZARDOUS.
AVERTISSEMENT – RISQUE D'EXPLOSION. – NE PAS OUVRIR L'ENCEINTE, A MOIS QU'IL
NE S'UN EMPLACEMENT NON DANGEREUX.
•
The field housing is only accessible by tools.
•
The field housing and the cable glands must have an approval for the required
temperature range.
•
At temperatures higher than 70°C at the cable inlet of the field housing, ensure that
proper glands and cables are used.
•
The connection terminal block of the AMS EZ 1000 Converter must be plugged-in
when the wires are energized (IEC / EN IEC 60079-0 - 20.4).
•
Dimension the connection compartment so that cables can be connected without any
complications. The minimum dimension of the field housing cross section is 120 mm x
155 mm (see
44
= -60 V for the explosion protection. This is valid for both, the
m
Figure
6-1).
Operating Manual
MHM-97884
MHM-97884, Rev. 1.8
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