Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 9)

Publication 1797-6.5.6 - June 2005
Preface 5
Use in North American Hazardous Locations
FLEX Ex modules are rated for installation in Class I Division 1 & 2, Groups
A-D hazardous areas. They are also rated to connect to field devices that are
located in Class I, II, or III, Groups A-G hazardous areas.
If FLEX Ex components are to be installed in a Class II or III location in your
application, you can mount them in a suitable, dust-proof enclosure with the
appropriate connectors, glans, and seals. For example, a NEMA 9 enclosure
may be appropriate. The FLEX Ex modules are rated to connect to devices in
Class II or III locations.
FLEX Ex modules are rated for installation in North American Class I Zone 1
& 2, Groups IIC, IIB, & IIA hazardous areas. They are also rated to connect
to field devices that are located in North American Class I Zone 0, 1, & 2,
Groups IIC, IIB, & IIA hazardous areas.
As always, observe local code requirements when applying your FLEX Ex
application.
Use in CENELEC Hazardous Locations
FLEX Ex modules are rated for installation in European Zones 1, 2, and 22.
They are also rated to connect to field devices that are located in European
Zones 0, 1, 2, 21, and 22 hazardous areas. The FLEX Ex power supplies
(1797-PS1E and -PS2E2) are rated for use in Zones 1 and 22.
If FLEX Ex components are to be installed in a European Zone method dust
or fiber location in your application, you must mount them in an approved,
dust-proof enclosure with the appropriate connectors, glans, and seals.
Pepperl+Fuchs have three cabinets that are approved for use with FLEX Ex
components in Zone 22 applications: IVK2-ISRPI-V8LC;
IVK2-ISRPI-V8HYW; and IVK2-ISRPI-V16LC. P+F has offices in
Twinsburg, Ohio, USA, and Mannheim, Germany. See their website at
www.pepperl-fuchs.com.
As always, observe local code requirements when applying your FLEX Ex
application.