Rockwell Automation 1797-XXX FLEX Ex System Certification Reference Manual - Manual (Page 70)

Publication 1797-6.5.6 - June 2005
12-2 1797-IRT8 FLEX Ex Thermocouple/RTD Input Module
Wiring to a 1797-TB3 or
-TB3S Terminal Base Unit Connect wiring to the terminal base as shown below.
Intrinsically Safe
Specifications For a full list of specifications, refer to FLEX Ex Thermocouple/RTD Input
Module Installation Instructions, publication 1797-5.4.
Row A
Row B
Row C
Ch 7 Ch 6 Ch 5 Ch 4
+V CJC -V
41505
Ch 7
+ L
Ch 2 Ch 1 Ch 0 Ch 3
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51
H - + L H - + L H - + L H -
+ L H - + L H - + L H - + L H -
-V CJC
chassis
GND for
shield chassis
GND for
shield 0+ 0- 1- 1+
No connection allowed to terminals 36 and 49
+V
ATTENTION
Do not use any unused terminals on this terminal base unit.
Using these terminals as supporting terminals can result in
damage to the module and/or unintended operation of
your system.
Output (intrinsically safe)
(16 position male/female flexbus
connector)
U
i
< 5.8V
I
i
< 400mA
Li = Negligible
Ci < 1.35
µF
Power Supply
(+V, -V Intrinsically Safe)
U
i
< 9.5V dc
I
i
< 1A
L
i
= Negligible
C
i
= Negligible
Operational Temperature -20 to +70 o C (-4 to 158 o F)
Agency Certification II (1) 2G EEx ia/ib IIB/IIC T4
II (1D) (2D)
Certificates DMT 98 ATEX E 023X