Rockwell Automation 1797-PS2E2 FLEX Ex Power Supply - Manual (Page 6)

6 FLEX Ex Power Supply
Publication 1797-5.8 - June 2010
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-PS2E2 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 60079-11, you must
heed the EC- type examination certificate and the applicable national and
local construction, installation, and operating regulations.
Zone 1
The power supply 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.
WARNING
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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