Allen-Bradley 1794-IE8H, User Manual, Page: 57 / 146

Publication 1794-UM063A-EN-P - March 2006
Install Your FLEX I/O Analog Modules 3-11
Connections for the 1794-OE8H HART Analog Output Module on a
1794-TB3G or 1794-TB3GS Terminal Base Unit
1. Connect the individual output wiring to (+) terminals (0, 4, 8, 12) on the
0 to 15 row (A) and on the 16 to 33 row (B) (terminals 17, 21, 25, 29) as
indicated in the table below.
2. Connect the associated output to the corresponding (-) terminal (1, 5, 9,
13) on the 0 to 15 row (A), and on the 16-33 row (B) (terminals 18, 22,
26, 30) for each input as indicated in the following table.
3. CV dc power to terminal 34 on the 34 to 51 row (C).
4. Connect -V to terminal 35 on the 34 to 51 row (C).
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
16
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 34
Chassis
Ground
(1794-TB3G shown)
Chassis
Ground
+V -V (COM)
24C dc
Supply In
+V -V (COM)
24C dc
Supply Out
Chassis Grounds for Shields
+V = +24V dc = Terminals C-34 and C-50
-V = COM = C-35 and C-51
Chassis Ground = Terminals B-16, B-33, C-38, C-40…45, and C-47
A
B
C
For daisy-chaining: Supply in - C-34 (+) and C-35 (-)
Supply out - C-50 (+) and C-51 (-)
NC = No connection
NC NC
+
_
+
_
+
_
+
_
+
_
+
_
+
_
+
_
Ch0 Ch1 Ch3
Ch5
Ch2
Ch4 Ch6 Ch7
Flexbus
Bus
uC
+V
-V
+
-
Power
Supply
4 to 20 mA
Actuator
4 to 20 mA
Valve
41441
41440
1794-OE8H Module
HART
Modem
I
21.6V
250
Ω
45
Ω
F