Rockwell Automation 1794-IJ2XT FLEX I/O Frequency Input Modules User Manual - Manual (Page 32)

Publication 1794-6.5.11 - September 2011
22 Install Your FLEX I/O Frequency Input Module
Connecting Wiring Using a 1794-TB3G, 1794-TB3GK or
1794-TB3GS Terminal Base Unit
1. Connect individual signal wiring to numbered terminals on the 0…15
row (A) and 17…32 row (B) on the terminal base unit as indicated in
the table below.
2. Connect output signal and supply wiring to the numbered terminals on
rows B and C, as shown in the figure, 1794-TB3G, 1794-TB3GK and
1794-TB3GS Wiring Connections, on page 21.
3. Terminate shields to terminals 16 or 33 on row B, or 40…45 on row C.
4. Connect +24V DC to terminal 34 on the 34…51 row (C), and 24V
common to terminal 35 on the 34…51 row (C).
5. If daisychaining the +24V DC power to the next 1794-TB3G or
1794-TB3GS base unit, connect a jumper from terminal 50 (+24V) on
this base unit to terminal 34 and from terminal 51 (24V DC common)
to terminal 35 on the next 1794-TB3G or 1794-TB3GS base unit.
ATTENTION
To reduce susceptibility to noise, power frequency modules and digital
modules from separate power supplies. Do not exceed a length of
10 m (33 ft) for DC power cabling.
ATTENTION
Use extreme care when connecting wiring to an adjacent terminal
base unit. Wiring for the 1794-TB3G and 1794-TB3GS terminal base
units is different from other 1794 terminal base units.
ATTENTION
Do not daisychain power or ground from the 1794-TB3G or
1794-TB3GS terminal base unit to any AC or DC digital module
terminal base unit.
ATTENTION
24V DC power must be applied to your module before operation. If
power is not applied, the module position will appear to the adapter as
an empty slot in your chassis. If the adapter does not recognize your
module after installation is completed, cycle power to the adapter.