Rockwell Automation 1797-TCAP ControlNet Ex Tap Dummy Load Installation User Manual
Page 5
ControlNet Ex Tap Terminator Installation Instructions
5
1797-5.30 - September 1999
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.
ó
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.
ì
WARNING: Substitution of components may impair intrinsic safety.
AVERTISSEMENT: La substitution de composant peut compromettre la
securite intrinseque.
ö
If fiber optic cable is provided with a metal shield, it must be connected
to a dedicated intrinsic safety ground in the non-hazardous location and
tied back in the hazardous location or be connected to a ground in the
hazardous location and tied back in the non-hazardous location.
ú
The glass fiber must have a minimum diameter of 6
µ
m.
Table 1
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