Rockwell Automation 1797-PS1E FLEX Ex 85-253V AC In/Quad-Ex DC Out Power Supply - Manual (Page 6)

6 FLEX Ex 85…253V ac In/Quad-Ex dc Out Power Supply
Publication 1797-5.33 - April 2007
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 Series B power supply has a protection factor of IP65. Refer
to the specifications table for the IS module type.
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…70 °C must not be exceeded.
Zone 22
The housing type of the power supply is applicable for use in Zone 22. It
corresponds with the category 3D acc. to directive 94/9 EC and is marked
with a type label accordingly.
ATTENTION
The power supply cannot be used in an intrinsically safe
environment after its outputs have been exposed to nonintrinsically
safe signals.
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