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6 FLEX Ex 85-253V AC In/Quad-Ex DC Out Power Supply
Make certain that you only connect intrinsically safe power supplies to other
intrinsically safe system modules or adapters to maintain the integrity of the
intrinsically safe backplane.
Installation in Zone 1, 22
The 1797-PS1E power supply has a protection factor of IP65. Refer to the
specifications table for the IS module type.
The power supply cannot be used in an intrinsically safe
ATTENTION
environment after its outputs have been exposed to
non-intrinsically safe signals.
Application
When installing, commissioning, operating and maintaining devices or device
components of the Flex Ex system as intrinsically safe electrical apparatus in
potentially explosive atmospheres according to EN 50020, you must heed the
EC- type examination certificate and the applicable national and local
construction, installation and operating regulations.
Zone 1
The Power Supply unit can be located in Zone 1. The permissible ambient
temperature of -20°C to +70°C must not be exceeded.
Zone 22
The housing type of the power supply is applicable for the use in Zone 22. It
corresponds with the category 3D acc. to directive 94/9 EC and is marked
with a type label accordingly.
Publication
1797-5.33 - December 2003
41307
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