Installation Requirements; Installation In Hazardous Areas - Emerson PACSystems RX3i User Manual

User Manual
GFK-2883F
Note:
Rated thermal specifications are based on a clearance of 5.1 cm (2 in) above and below the
equipment and 2.54 cm (1 in) to the left of the RX3i CEP Carrier.
3.1.1

Installation Requirements

This product is intended for use with the RX3i system. Its components are considered open
equipment (having live electrical parts that may be accessible to users) and must be
installed in an ultimate enclosure that is manufactured to provide safety. At a minimum, the
enclosure shall provide a degree of protection against solid objects as small as 12 mm (0.47
in)(fingers, for example). This equates to a NEMA/UL Type 1 enclosure or an IEC60529 IP20
rating providing at least a pollution degree 2 environment. For details about installing RX3i
rack systems, refer to the PACSystems RX3i System Manual, GFK-2314.
3.1.2

Installation in Hazardous Areas

The following information is for products bearing the UL marking for Hazardous Areas or
ATEX marking for explosive atmospheres:
Class 1 Division 2 Groups ABCD
•
•
WARNING
• Explosion hazard - Substitution of components may impair suitability for Class I, Division
2.
• When in hazardous locations, turn off power before replacing or wiring modules.
ATEX ZONE 2
•
•
Installation & Mounting
• You may need to allow more space for installation of cables and connectors than what is
required for heat dissipation. To avoid impacting mechanical reliability and signal quality,
cable installation must comply with the minimum bend radius specified by the cable
manufacturer.
•
The RX3i CEP Carriers with I/O modules attached require an enclosure with minimum
depth of 16 5 mm.
This equipment is open-type device and is meant to be installed in an enclosure
suitable for the environment that is only accessible with the use of a tool.
Suitable for use in Class I, Division 2, Groups A, B, C and D Hazardous Locations, or
non-hazardous locations only.
Device must be mounted in an enclosure certified in accordance with EN60079-15
for use in Class I, Zone 2, GROUP IIC and rated IP54. The enclosure shall only be able
to be opened with the use of a tool.
Provisions shall be made, external to the apparatus, to provide the transient
protection device to be set at a level not exceeding 140% of the rated voltage at the
input terminals of this apparatus.
Chapter 3
Sep 2019
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