User manual

Publication CIG-WD001B-EN-P - May 2005
1794 FLEX I/O Modules 19-15
01 234 56 78 9 101112131415
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
33
16
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49
51
50
1794-TB2, -TB3, -TB3K, -TB3S, -TB3T, -TB3TS
0 1234567891011
12
13 14
15
0-15
16-33
34-51
A
B
C
!
To reduce the susceptibility to noise, power analog
modules and digital modules from separate power
supplies. Do not exceed a length of 3m (9.8ft) 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 unit.
ATTENTION
1
0A-0A-1B-17
1A-2A-3B-19
2A-4A-5B-21
3A-6A-7B-23
4A-8A-9B-25
5 A-10 A-11 B-27
6 A-12 A-13 B-29
7 A-14 A-15 B-31
Common
+V dc
C-39
C-40
C-41
C-42
C-43
C-44
C-45
C-46
Channel High Signal Low Signal
Shield Return
TB2, TB3,
TB3K, TB3S
TB3T, TB3TS
B-16 through B-33 for 1794-TB2, -TB3, -TB3K and -TB3S
B-16, B-17, B-19, B-21, B-23, B-25, B-27, B-29, B-31 and B-33 for
1794-TB3T and -TB3TS
C-34 through C-51 for 1794-TB3, -TB3K and -TB3S; C-34 and C-51 for 1794-TB2
C-34, C-35, C-50 and C-51 for 1794-TB3T and -TB3TS
1. B-17, B-19, B-21, B-23, B-25, B-27, B-29 and B-31 are tied to Common on 1794-TB2, -TB3, -TB3S;
C-39 through C-46 are tied to chassis ground on 1794-TB3T and 1794-TB3TS
Use 1794-TB3T or -TB3TS for thermocouple or millivolt inputs. Use 1794-TB2, -TB3 and -TB3S
for millivolt inputs only.
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.
Input
CJC Sensor
+
_
Chassis
Ground
CJC
Tail
CJC1 36 37 38 A0 through A7
(any terminal)
CJC2 47 48 49
The tail of the cold junction compensator shares a terminal with an input.
Terminals 35 through 50 are not used on the 1794-TB2
A8 through A15
(any terminal)
1794-TG3T and 1794-TB3TS
1794-IT8
0 A-0 B-17 8 A-8 B-25
1 A-1 B-18 9 A-9 B-26
2 A-2 B-19 10 A-10 B-27
3 A-3 B-20 11 A-11 B-28
4 A-4 B-21 12 A-12 B-29
5 A-5 B-22 13 A-13 B-30
6 A-6 B-23 14 A-14 B-31
7 A-7 B-24 15 A-15 B-32
Common +V dc
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
1716 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
51
50
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
0-15
16-33
34-51
A
B
C
1794-TB2, -TB3, -TB3K, -TB3S
Input
Terminal
Common
Terminal
Input
Terminal
Common
Terminal
Terminals 35 through 50 are not used on 1794-TB2
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.
Input
Channel
Input
Channel
C-34 through C-51
(C-34 and C-51 for TB2)
B-16 through B-33
1794-TB2, -TB3, -TB3K, -TB3S
1794-IV16