About The Power Supply - Allen-Bradley Series B Installation Instructions Manual

This equipment is considered Group 1, Class A industrial equipment
ATTENTION
according to IEC/CISPR Publication 11. Without appropriate
precautions, there may be potential difficulties ensuring
electromagnetic compatibility in other environments due to
conducted as well as radiated disturbance.
This equipment is supplied as enclosed equipment. It should not
require additional system enclosure when used in locations
consistent with the enclosure type ratings stated in the
Specifications section of this publication. Subsequent sections of
this publication may contain additional information regarding
specific enclosure type ratings, beyond what this product provides,
that are required to comply with certain product safety certifications.

About the Power Supply

1797-PS1E
The power supply is an essential component in the operation of an
intrinsically-safe system. It must isolate the unsafe incoming power from the
control system and limit the available energy to IS-safe levels.
No other power source is needed to operate any components attached to the
FLEX Ex system in the hazardous area. Power for valves, actuators, or
transmitters come from the FLEX Ex modules.
FLEX Ex 85...253V AC In/Quad-Ex DC Out Power Supply 3
Publication
1797-IN533-EN-P - August 2017
30686