Rockwell Automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual - Manual (Page 112)

Publication 1794-UM061A-EN-P - July 2006
110 Simplified Schematics of FLEX I/O Digital Modules
1794-IA8 120V AC 8 Input Module
1794-IA8I 120V AC 8 Input Module
Typical Simplified Schematic for Input 0
and a 1794-TB2, 1794-TB3, 1794-TB3S, or (1794-TBN) Terminal Base
Flexbus
Interface Input
Filter Opto
Isolation
C-34
A-1 (C-1)
A-0 (B-0)
B-16
Input
Device
L1
85…132V ac
Common L2
30231
40945
Flexbus
Interface Input
Filter Opto
Isolation
A-0
A-1
Input
Device
85…132V ac
Typical Simplified Schematic for Input 0
and a 1794-TB3, 1794-TB3S, 1794-TB2, or (1794-TBN) Terminal Base
(B-0)
(C-1)
L1
Common L2
Note: To maintain isolation, separate ac sources must be used
with each channel. Auxiliary terminal strips are required for all
terminal base units.