Allen-Bradley FLEX Ex 1797-IRT8, Руководство по установке

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24 FLEX Ex Thermocouple/RTD Input Module
Publication
1797-IN004G-EN-P - August 2017
UL, C-UL I/O Entity Parameters
Table 1
Wiring Methods
•
Wiring method 1 - Each channel is wired separately.
•
Wiring method 2 - Multiple channels in one cable, providing each channel
is separated in accordance with the National Electric Code (NEC) or
Canadian Electric Code (CEC).
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
t
and I
t
of the associated apparatus are
less than or equal to V
oc
and I
sc
or 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
Method
Channel Terminals V
oc
(V)
I
sc
(mA)
V
t
(V)
I
t
(mA)
Groups C
a
(
μ
F)
L
a
(mH)
1 and 2 Any one
channel
(for
example,
ch0)
0(+), 1(H),
2(L), 3(-)
9.0 37.0 - - A, B 4.9 20.0
C, E 14.7 80.0
D, F, G 39.2 160.0
37, 38, 39
(CJC0)
or
46, 47, 48
(CJC1)
9.0 1.0 - - A, B 4.9 1000.0
C, E 14.7 1000.0
D, F, G 39.2 1000.0
0(+), 1(H),
2(L), 3(-)
37, 38, 39
(CJC0)
or
46, 47, 48
(CJC1)
- - 9.0 38.0 A, B 4.9 20.0
C, E 14.7 80.0
D, F, G 39.2 160.0
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