User manual
Publication CIG-WD001B-EN-P - May 2005
19-10 1794 FLEX I/O Modules
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
Chassi s
Ground
(1794-TB3G shown)
Chassi s
Ground
+V COM
24C dc
Supply In
+V COM
24C dc
Supply Out
Chassis Grounds for Shields
A
B
C
NC
I0 I1 I2 I3 I4 I5 I6 I7
I8 I9 I10 I11
V0 V1 V2 V3 V4 V5 V6 V7
V8 V9 V10 V11C0 C1 C2 C3 C4 C5 C6 C7
C8
C9 C10 C11
NC
I = Current
V = Voltage
C0 through C11 = Returns for I or V connections 0 through 11
+24V dc = Terminals C34 and C50
COM = C35 and C51
Chassis Ground = Terminals B16, B33, C38, C40 through 45, and C47
NC = No connection
For daisy-chaining: Supply in - C34 (+) and C35 (-), Supply out - C50(+) and C51 (-)
Ch.
Gnd
Ch.
Gnd
!
To reduce susceptibility to noise, power analog modules
and digital modules from separate power supplies. Do
not exceed a length of 33 ft (10m) for dc power cabling.
Do not daisy chain power or ground from this terminal
base unit to any ac or dc digital module terminal
base units.
Do not exceed a length of 33 ft (10m) for signal cabling.
ATTENTION
1794-TB3G, -TB3GK, -TB3GS
Channel
Signal
Ty p e
Label
Markin g
Input/Output Commo n
Te rminal
Input 0
Current I0 A-0 B-17
Voltage V0 A-1
Input 1
Current I1 A-2 B-18
Voltage V1 A-3
Input 2
Current I2 A-4 B-23
Voltage V2 A-5
Input 3
Current I3 A-6 B-24
Voltage V3 A-7
Input 4
Current I4 A-8 B-25
Voltage V4 A-9
Input 5
Current I5 A-10 B-26
Voltage V5 A-11
Input 6
Current I6 A-12 B-31
Voltage V6 A-13
Input 7
Current I7 A-14 B-32
Voltage V7 A-15
Output 0
Current I8 B-19 C-37
Voltage V8 B-20
Output 1
Current I9 B-21 C-39
Voltage V9 B-22
Output 2
Current I10 B-27 C-46
Voltage V10 B-28
Output 3
Current I11 B-29 C-48
Voltage V11 B-30
-V dc
Common
+V dc
Power
Chassis
Ground
(Shield)
Terminals 35 and 51 are internally connected in the terminal
base unit.
1794-TB3G, -TB3GK, -TB3GS
Terminals 34 and 50 are internally connected in the terminal
base unit.
Terminals 16, 33, 38, 40 through 45, and 47 are internally
connected to chassis ground.
1794-IE8XOE4
1794-TB2, -TB3, -TB3K, -TB3S, -TB3T, -TB3TS
1794-TBN,
-TBNK
Channel Signal Type Label Markings Shiel d (TB 3T/TB 3TS)
Input 0
Current Input I0 A-0
C-39
B-0
Current Return I0 Ret A-1 C-1
Voltage Input V0 A-2
C-40
B-2
Voltage Return V0 Ret A-3 C-3
Input 1
Current Input I1 A-4
C-41
B-4
Current Return I1 Ret A-5 C-5
Voltage Input V1 A-6
C-42
B-6
Voltage Return V1 Ret A-7 C-7
Output 0
Current Output I0 A-8
C-43
B-8
Current Return I0 Ret A-9 C-9
Voltage Output V0 A-10
C-44
B-10
Voltage Return V0 Ret A-11 C-11
Output 1
Current I Output I1 A-12
C-45
B-12
Current Return I1 Ret A-13 C-13
Voltage Output V1 A-14
C-46
B-14
Voltage Return V1 Ret A-15 C-15
Common
TB3T, TB3TS: Terminals 16, 17, 19, 21, 23, 25, 27, 29, 31, and 33 are internally connected in the terminal base unit
TB3T, TB3TS: Terminals 34, 35, 50, and 51 are internally connected in the terminal base unit
Chassis Gnd TB3T, TB3TS: Terminals 39 through 46 are internally connected to chassis gnd
16 0 2 4 6 8 1 0 1 2 14 3 3
34 1 3 5 7 9 11 13 15 51
1794-TBN, 1794-TBNK
16
34 51
Even Numbered Terminals 0 thru 14
Odd Numbered Terminals 1 through 15
16, 0, 2, 4, 6,
8. 10. 12. 14. 33
34, 1, 3, 5, 7,
9, 11, 13, 15, 51
B
C
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Current
Input
A
B
C
34-51
16-33
0-15
I
+-
-+
+
II I
+
-
-
-
+
+
+
ac or dc
4-Wire Current
Transmitter
dc only
3-Wire Current
Transmitter
Current Only
2-Wire Output
Device
dc only
3-Wire Output
Device
IRVRIRVRIRVRIRVR
Current
Input
Current
Output
Device
Voltage
Output
Device
34 and 51
for T B2
!
ATTENTION
1794-TB2, 1794-TB3, 1794-TB3K, 1794-TB3S, 1794-TB3T, 1794-TB3TS
33
Connect any signal wiring shields to functional ground as near as possible to the module when using the 1794-TB2, -TB3, -TB3K, and -TB3S.
With the 1794-TB3T and -TB3TS, use terminals C-39 through C-46 for signal wiring shields.
Connect +V to C-34.
Connect +V common to B-16.
Use B-33 and C-51 for daisy chaining to the next terminal base unit.
+V dc
Input
Terminal
Input/Output
Terminal
Only connect either a voltage signal or a current signal per channel, not both.
To reduce susceptibility to noise, power analog and digital modules from
separate power supplies. Do not exceed a length of 3M (9.8 ft) for DC
power cabling.
TB3, TB3K, TB3S: Terminals 34 through 51 are internally connected in the terminal base unit.
TB2, TBN, TBNK: Terminals 34 and 51 are internally connected in the terminal base unit.
TBN, TBNK: Terminals 16 and 33 are internally connected in the terminal base unit.
TB2, TB3, TB3K TB3S: Terminals 16 through 33 are internally connected in the terminal base unit.
1794-IF2XOF2I