Rockwell Automation 1797-OE8H FLEX Ex HART Analog Modules User Manual - Manual (Page 121)

Publication 1797-6.5.3 - March 2006
Specifications A-9
Table 2
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.
Simple apparatus is defined as a device which neither generates nor stores
more than 1.2V, 0.1 A, 20 µJ, or 25 mW.
Wiring methods must be in accordance with the National Electric Code,
ANSI/NFPA 70, Article 504 and 505. For additional information refer to
ANSI/ISA RP12.6.
This module, 1797-IE8H, must be used with terminal base 1797-TB3 or
1797-TB3S.
Terminals 3, 7, 11, 15, 20, 24, 28, 32, 36-39, and 46 to 49 shall not be
connected.
WARNING: Substitution of components may impair intrinsic safety.
Terminals V
t
(V) I
t
(mA) Groups C
a
( µF) L
a
( µH)
Male Bus
Connector
5.8 400 A-G 3.0 3.0