Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 150)

Publication 1797-6.5.6 - June 2005
31-4 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module
IMPORTANT
A terminal base may or may not have an I/O module
installed.
1797- IRT8 Allen-Bradley
B - A
7 PWR 6 5 4 3 2 1 0
2
8 Point RTD/Thermocouple mV Input Module
FLEX Ex
Temperature Input
I/O Module
LEDs
Female Bus
Connection
Field Wiring
Terminals Terminal
Base
Terminal
Base Key
Male Bus
Connection
Key Position for
Terminal Base
Insertion
42020
To any intrinsically safe
device or associated
apparatus with Entity
Concept parameters of V
oc
< 5.8V; I
sc
< 400mA.
To any intrinsically safe
device or associated
apparatus with Entity
Concept parameters of
V
oc
< 9.5V; I
sc
< 1A.
To any IS device with Entity
Concept parameters of
(V
max
, I
max
, C
i
, L
i
) appropriate for
connection to associated
apparatus with Entity
Concept parameters listed in
Table 2.
ch0
ch1
ch2
ch3
ch4
ch5
ch6
ch7 29(+)
30(H)
1797-IRT8
16
Shield Connection Only
50
51
35
34
Female Bus Connector
V
max =5.8V
I max =400mA
C i =1350nF
L i =0
V max =9.5V
I max =1A
C i =0
L i =0
Male Bus
Connector
33
40
41
42
43
44
45
31(L)
32(-)
25(+)
26(H)
27(L)
28(-)
21(+)
22(H)
23(L)
24(-)
17(+)
18(H)
19(L)
20(-)
12(+)
13(H)
14(L)
15(-)
8(+)
9(H)
10(L)
11(-)
4(+)
5(H)
6(L)
7(-)
0(+)
1(H)
2(L)
3(-)
37 38 39 46 47 48
CJC0 CJC1
Any Simple Apparatus or I.S. device with Entity
Concept parameters (V
max
, I
max
, C
i
, L
i
) appropriate
for connection to associated apparatus with Entity
Concept parameters listed in Table 1: Entity Values
42021
Hazardous (Classified) Location
Class I, Zone 0 Groups IIC, IIB, IIA
Class I, Div. 1 Groups A, B, C, D
Class II, Div. 1 Groups E, F, G
Class III, Div. 1
Hazardous (Classified) Location
Class I, Zone 1 Groups IIC, IIB, IIA
Class I, Div. 1 Groups A, B, C, D
Class II, Div. 1 Groups E, F, G; Class
III