Connect wiring for the 1794-tbn, Input map – Rockwell Automation 1794-OF4I FLEX I/O Isolated Analog Output Module Installation User Manual
Page 3
FLEX™ I/O Isolated Output Analog Module 3
Publication 1794-IN037E-EN-P - November 2011
Connect Wiring for the 1794-TBN
1. Connect individual output wiring to the even-numbered terminals on row
B for each output as indicated in the following table. Use Belden 8761
cable for signal wiring.
2. Connect the associated common/return to the corresponding
odd-numbered terminal on row C for each output as indicated in the
Wiring Connections for the 1794-OF4I Output Module
table.
3. Connect the +V DC power to terminal 34 on the 34…51 row (C) and -V
common/return to terminal 16 on the 16…33 row (B).
4. If daisychaining +V power to the next terminal base, connect a jumper
from terminal 51 (+V DC) on this base unit to terminal 34 on the next
base unit.
5. If continuing DC common (-V) to the next base unit, connect a jumper
from terminal 33 (common) on this base unit to terminal 16 on the next
base unit.
6. Connect the shield to functional earth ground as near as possible to the
module.
1794-TB2, 1794-TB3, 1794-TB3S, 1794-TB3T and 1794-TB3TS Terminal Base
Wiring
1794-TBN Terminal Base Wiring
ATTENTION
Connect only one current or one voltage signal per channel. Do not
connect both current and voltage on one channel.
ATTENTION
To reduce susceptibility to noise, power analog modules and digital
modules from separate power supplies.
Wiring Connections for the 1794-OF4I Output Module
Channel
Signal Type
Label
Markings
1794-TB2, 1794-TB3, 1794-TB3S,
1794-TB3T, 1794-TB3TS
1794-TBN
Terminal
Shield (1794-TB3T,
1794-TB3TS)
Terminal
0
Current
I0
A-0
C-39
B-0
Current
I0 ret
A-1
C-1
Voltage
V0
A-2
C-40
B-2
Voltage
V0 ret
A-3
C-3
1
Current
I1
A-4
C-41
B-4
Current
I1 ret
A-5
C-5
Voltage
V1
A-6
C-42
B-6
Voltage
V1 ret
A-7
C-7
2
Current
I2
A-8
C-43
B-8
Current
I2 ret
A-9
C-9
Voltage
V2
A-10
C-44
B-10
Voltage
V2 ret
A-11
C-11
3
Current
I3
A-12
C-45
B-12
Current
I3 ret
A-13
C-13
Voltage
V3
A-14
C-46
B-14
Voltage
V3 ret
A-15
C-15
-V DC common
1794-TB2, 1794-TB3, 1794-TB3S: Terminals B-16…B-33 are internally connected in the
terminal base unit.
1794-TBN: Terminals B-16 and B-33 are internally connected in the terminal base unit.
1794-TB3T, 1794-TB3TS: Terminals 16, 17, 19, 21, 23, 25, 27, 29, 31 and 33 are internally
connected in the terminal base unit.
+V DC power
1794-TB3, 1794-TB3S: Terminals 34…51 are internally connected in the terminal base unit.
1794-TB3T, 1794-TB3TS: Terminals 34, 35, 50 and 51 are internally connected in the terminal
base unit.
1794-TB2, 1794-TBN: Terminals 34 and 51 are internally connected in the terminal base unit.
Chassis ground
(shield)
1794-TB3T, 1794-TB3TS: Terminals 39…46 are internally connected to chassis ground.
ATTENTION
Do not remove or replace a Terminal Base unit while power is applied.
Interruption of the backplane can result in unintentional operation or
machine motion.
Input Map
Dec
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Oct
17
16
15
14
13
12
11
10
7
6
5
4
3
2
1
0
Word 0
Read back channel 0
Word 1
Read back channel 1
Word 2
Read back channel 2
Word 3
Read back channel 3
Word 4
PU
FP
CF
0
Reserved
0
0
0
0
0
BD
DN
0
Word 5
0
0
0
0
P3
P2
P1
P0
0
0
0
0
W3
W2
W1
W0
Where:
PU = Power up inconfigured
FP = Field power off
CF = In configuration mode
BD = Bad calibration
DN = Calibration accepted
P0…P3 = Output holding in response to Q0…Q3
W0…W3 = Wire off current loop status for channels 0…3 respectively
+
+
I
+
A
B
C
+
+
+
+
I
I
I
_
_
_
_
_
1
2
3
4
5
6
7
8
9
0
22
23
24
25
26
27
28
29
30
31
32
33
21
16
17
18
19
20
40
41
42
43
44
45
46
47
48
49
50
51
39
34
35
36
37
38
10
11
12
13
14
15
45750
0
1
2
3
4
5
6
7 8
9 10 11 12 13 14 15
I
R V R
I
R
V R I
R V R
I
R V R
0...15
16...33
34...51
Current
output
device
Current
output
device
Current
output
device
Voltage
output
device
AC or DC
4-wire output
device
DC only
3-wire output
device
Current only
2-wire output
device
DC only
3-wire output
device
I
+
+
+
+
I
+
I
+
I
+
_
_
_
_
16
10
11
12
13
14
15
33
51
34
0
2
4
1
6
8
3
5
7
9
45749
Even-numbered terminals 0...14
16
33
34
51
Row B
Row C
Odd-numbered
terminals 1...15
DC only
3-wire output
device
Current only
2-wire output
device
DC only
AC or DC
4-wire output
device
Current
output
device
Current
output
device
Current
output
device
Voltage
output
device