Rockwell Automation 1794-XXXX FLEX I/O High-Density Analog Modules - Manual (Page 24)

Publication 1794-UM062A-EN-P - September 2012
16 Install Your FLEX I/O Module
Connect Wiring to the FLEX
I/O Module Wiring to the analog module is made through the terminal base unit on which
the module mounts.
Verify which terminal base units your module is compatible with in table Module
and Terminal Base Unit Compatibility on page 16 .
Connect Wiring Using a 1794-TB2 or 1794-TB3 Terminal Base Unit
1. Connect the individual signal wiring to numbered terminals on the 0…15
row (A) on the terminal base unit. Use Belden 8761 cable for signal wiring.
2. Connect each channel signal return to:
• 1794-IE8 – the associated terminal on row (B).
• 1794-OE4 – the corresponding terminal on the same row (A).
• 1794-IE4XOE2 – inputs: the associated terminal on row (B); outputs:
the corresponding terminal on the same row (A).
3. Connect +24V DC to designated terminals on the 34…51 row (C), and
24V common to designated terminals on the 16…33 row (B).
If daisy chaining the +24V DC power to the next base unit, connect a jumper
from terminal 51 on this base unit to terminal 34 on the next base unit. Connect
Module and Terminal Base Unit Compatibility
Module 1794-TB2 1794-TB3 1794-TB3S 1794-TB3G 1794-TB3GS 1794-TB3T 1794-TB3TS TBN
1794-IE8 Yes Yes No No No No No No
1794-IE8XT Yes Yes Yes No No Yes Yes No
1794-IE12 No No No Yes Yes No No No
1794-OE12 No No No Yes Yes No No No
1794-OE4 Yes Yes No No No No No No
1794-OE4XT Yes Yes Yes No No Yes Yes Yes
1794-IE4XOE2 Yes Yes No No No No No No
1794-IE4XOE2XT Yes Yes Yes No No Yes Yes No
1794-IE8XOE4 No No No Yes Yes No No No
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 discrete modules from separate power supplies. Do
not exceed a length of 10 m (33 ft) for power cabling.