FLEX I/O AC Digital Input Modules
7
Publication 1794-IN102C-EN-P - July 2015
3. Make sure the pins on the bottom of the module are straight so they will align
properly with the connector in the terminal base.
4. Position the module (4) with its alignment bar (5) aligned with the groove (6) on
the terminal base.
5. Press firmly and evenly to seat the module in the terminal base unit. The module
is seated when the latching mechanism (7) is locked into the module.
Connecting Wiring for the 1794-IA8
1.
For 1794-TB2, 1794-TB3, or 1794-TB3S
– Connect individual input wiring to
even numbered terminals on the 0-15 row (A) as indicated in the Wiring
Connections for 1794-IA8 table.
For 1794-TBN
– Connect individual input wiring to numbered terminals on the
16-33 row (B) as indicated in the Wiring Connections for 1794-IA8 table.
2.
For 1794-TB2
– Connect the associated 120V AC power lead (L1) of the input
device to the corresponding odd numbered terminals on the 0-15 row A for each
input as indicated in the Wiring Connections for 1794-IA8 table. (The odd
numbered terminals on row A are internally connected to 120V AC L1.)
For 1794-TB3 or 1794-TB3S
– Connect the associated 120V AC power lead
(L1) of the input device to the corresponding odd numbered terminals on the
34-51 row (C) or to the corresponding terminal on row (C) for each input as
indicated in the Wiring Connections for 1794-IA8 table. (The odd numbered
terminals on row (A) and the terminals of row (C) are internally connected to
120V AC power L1.)
WARNING:
If you insert or remove the module while backplane power is on,
an electrical arc can occur. This could cause an explosion in hazardous
location installations. Be sure that power is removed or the area is
nonhazardous before proceeding.
