Rockwell Automation 1797-Series ControlNet Ex Media Plannng Installation Manual - Manual (Page 19)

Publication CNET-IN003A-EN-P - January 2006
Overview of the ControlNet Ex Media System 1-11
UL, cUL I/O Entity Parameters and Requirements
The entity concept allows interconnection of intrinsically-safe
apparatus with associated apparatus not specifically examined in
combination as a system when the approved values of V
oc
and I
sc
or V
t
and I
t
of the associated apparatus are less than or equal to V
max
and
I
max
of the intrinsically-safe apparatus and the approved values of C
a
and L
a
of the associated apparatus are greater than C
i
+ C
cable
and L
i
+
L
cable
respectively for the intrinsically-safe apparatus.
Wiring methods must be in accordance with the National Electric
Code, ANSI/NFPA 70, Article 504 and 505 or the Canadian Electric
Code CSA C22.1, Part 1, Appendix F. For additional information refer
to ANSI/ISA RP12.6.
TIP
For more information on UL and cUL installation
requirements, refer to publication 1797-RM001, FLEX
Ex System Certification Reference Manual.
Terminals V
t
(V) I
t
(mA) Groups C
a
(
µ
F) L
a
(
µ
H)
Male Bus Connector 5.8 400 A-G 3.0 3.0
WARNING
Substitution of components may impair the intrinsic
safety of this system.
AVERTISSEMENT: La substitution de composant peut
compromettre la securite intrinseque.